durabrand t6605vf_t6705vf manual de servicio.pdf

SERVICE MANUALSec. 1: Main SectionI SpecificationsI Preparation for ServicingI Adjustment ProceduresI Schematic DiagramsI CBAsI Exploded viewsI Parts List

Sec. 2: Deck Mechanism SectionI Standard MaintenanceI Alignment for MechanismI Disassembly/Assembly of MechanismI Alignment Procedures of MechanismI Deck Exploded ViewsI Deck Parts List

14" COLOR TV/VCR COMBINATION

T6605VF

21" COLOR TV/VCR COMBINATION

T6705VF

PAL

MAIN SECTION

14"/21" COLOR TV/VCR COMBINATION

T6605VF/T6705VF

TABLE OF CONTENTSSpecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1Preparation for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1Cabinet Disassembly Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1Electrical Adjustment Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1 Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1Mechanical Trouble Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-7Schematic Diagrams / CBAs and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-1Cabinet Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1Packing Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-5Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1

Sec. 1: Main SectionI SpecificationsI Preparation for ServicingI Adjustment ProceduresI Schematic DiagramsI CBAsI Exploded ViewsI Parts List

1-1-1 T6605SP

SPECIFICATIONS*Mode---------SP mode unless otherwise specified*Test input terminal -------------Video input (1Vp-p) Audio input (-10dB) -----------------------Ant. input (80dBV) Video: 87.5% mod.(BG/DK), 80.0% mod.(I) Audio: 30kHz div (1kHz Sin)

[ T6605VF ]

[ T6705VF ]

[ T6605VF ]

[ T6705VF ]

Description Condition Unit Nominal Limit

1. Over Scan % 90 85/95

2. Linearity Horizontal % 15

Vertical % 10

3. High Voltage kV 22


1. Over Scan % 90 85/95

2. Linearity Horizontal % 15

Vertical % 10

3. High Voltage kV 25


1. Misconvergence Center m/m 0.6

Corner m/m 2.0

Side m/m 1.5

2. Contrast Control Range dB 6

3. Brightness APL 100% ft-L 55 40

4. Color Temperature K 8500


1. Misconvergence Center m/m 0.6

Corner m/m 2.5

Side m/m 1.8

2. Contrast Control Range dB 6

3. Brightness APL 100% ft-L 35 24

4. Color Temperature K 8500

1-1-2 T6605SP

All items are measured across 8 resistor at speaker output terminal.

Note: Nominal specifications represent the design specifications. All units should be able to approximate these.Some will exceed and some may drop slightly below these specifications. Limit specifications represent the abso-lute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifica-tions.


1. Horizontal Resolution (R/P) Line 230 2002. Jitter (Low) (R/P) S 0.05 0.23. S/N Chroma AM(SP) (R/P) dB 38 33 PM(SP) (R/P) dB 36 334. Wow & Flutter (RMS) (R/P) % 0.25 0.5


1. Video S/N dB 45 40

2. Audio S/N (W/LPF) dB 43 40


1. Audio Output Power (Max.) (R/P) W 1.0 0.82. Audio S/N (W/LPF) (R/P) dB 40 363. Audio Distortion (W/LPF) (R/P) % 3.0 5.04. Audio Freq. Response (-20dB Ref. 1kHz)

200Hz (R/P)6kHz (R/P)

dBdB

5.0/-105.0/-10

TV Norm Tuner Sensivity Receptive TV Channels

PAL-B/G NOM: VHF 46dBV / UHF 47dBVMAX: VHF 53dBV / UHF 56dBVE2 - E12, IA - IH, E21 - E69, S01 - S03, Z+1, Z+2, S1 - S41, gap2

1-2-1 T6600SFTY

IMPORTANT SAFETY PRECAUTIONSPrior to shipment from the factory, our products are strictly inspected for recognized product safety and electricalcodes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equallyimportant to implement the following precautions when a set is being serviced.

Safety Precautions for TV Circuit 1. Before returning an instrument to the custom-

er, always make a safety check of the entire instru-ment, including, but not limited to, the followingitems:

a. Be sure that no built-in protective devices are de-fective and have been defeated during servicing.(1) Protective shields are provided on this chassisto protect both the technician and the customer.Correctly replace all missing protective shields, in-cluding any removed for servicing convenience.(2) When reinstalling the chassis and/or other as-sembly in the cabinet, be sure to put back in placeall protective devices, including but not limited to,nonmetallic control knobs, insulating fishpapers,adjustment and compartment covers/shields, andisolation resistor/capacitor networks. Do not oper-ate this instrument or permit it to be operatedwithout all protective devices correctly in-stalled and functioning. Servicers who defeatsafety features or fail to perform safety checksmay be liable for any resulting damage.

b. Be sure that there are no cabinet openings throughwhich an adult or child might be able to insert theirfingers and contact a hazardous voltage. Suchopenings include, but are not limited to, (1) spac-ing between the picture tube and the cabinetmask, (2) excessively wide cabinet ventilationslots, and (3) an improperly fitted and/or incorrectlysecured cabinet back cover.

c. Antenna Cold Check - With the instrument ACplug removed from any AC source, connect anelectrical jumper across the two AC plug prongs.Place the instrument AC switch in the on position.Connect one lead of an ohmmeter to the AC plugprongs tied together and touch the other ohmme-ter lead in turn to each tuner antenna input ex-posed terminal screw and, if applicable, to thecoaxial connector. If the measured resistance isless than 1.0 megohm or greater than 5.2 mego-hm, an abnormality exists that must be correctedbefore the instrument is returned to the customer.Repeat this test with the instrument AC switch inthe off position.

d. Leakage Current Hot Check - With the instru-ment completely reassembled, plug the AC linecord directly into a 120V AC outlet. (Do not use anisolation transformer during this test.) Use a leak-

age current tester or a metering system that com-plies with American National Standards Institute(ANSI) C101.1 Leakage Current for Appliancesand Underwriters Laboratories (UL) 1410, (50.7).With the instrument AC switch first in the on posi-tion and then in the off position, measure from aknown earth ground (metal water pipe, conduit,etc.) to all exposed metal parts of the instrument(antennas, handle brackets, metal cabinet, screwheads, metallic overlays, control shafts, etc.), es-pecially any exposed metal parts that offer an elec-trical return path to the chassis. Any currentmeasured must not exceed 0.5 milli-ampere. Re-verse the instrument power cord plug in the outletand repeat the test.

ANY MEASUREMENTS NOT WITHIN THE LIMITSSPECIFIED HEREIN INDICATE A POTENTIALSHOCK HAZARD THAT MUST BE ELIMINATEDBEFORE RETURNING THE INSTRUMENT TOTHE CUSTOMER OR BEFORE CONNECTINGTHE ANTENNA OR ACCESSORIES.

e. X-Radiation and High Voltage Limits - Becausethe picture tube is the primary potential source ofX-radiation in solid-state TV receivers, it is special-ly constructed to prohibit X-radiation emissions.For continued X-radiation protection, the replace-ment picture tube must be the same type as theoriginal. Also, because the picture tube shieldsand mounting hardware perform an X-radiationprotection function, they must be correctly in place.High voltage must be measured each time servic-

DEVICELEAKAGECURRENT

TESTER

ALSO TEST WITHPLUG REVERSEDUSING ACADAPTER PLUGAS REQUIRED

TEST ALL EXPOSEDMETAL SURFACES

READING SHOULDNOT BE ABOVE 0.5 mA

EARTHGROUND

BEINGTESTED

1-2-2 T6600SFTY

ing is performed that involves B+, horizontal de-flection or high voltage. Correct operation of theX-radiation protection circuits also must be recon-firmed each time they are serviced. (X-radiationprotection circuits also may be called "horizontaldisable" or "hold down.") Read and apply the highvoltage limits and, if the chassis is so equipped,the X-radiation protection circuit specifications giv-en on instrument labels and in the Product Safety& X-Radiation Warning note on the service datachassis schematic. High voltage is maintainedwithin specified limits by close tolerance safety-re-lated components/adjustments in the high-voltagecircuit. If high voltage exceeds specified limits,check each component specified on the chassisschematic and take corrective action.

2. Read and comply with all caution and safety-relat-ed notes on or inside the receiver cabinet, on thereceiver chassis, or on the picture tube.

3. Design Alteration Warning - Do not alter or addto the mechanical or electrical design of this TV re-ceiver. Design alterations and additions, including,but not limited to circuit modifications and the ad-dition of items such as auxiliary audio and/or videooutput connections, might alter the safety charac-teristics of this receiver and create a hazard to theuser. Any design alterations or additions will voidthe manufacturer's warranty and may make you,the servicer, responsible for personal injury orproperty damage resulting therefrom.

4. Picture Tube Implosion Protection Warning -The picture tube in this receiver employs integralimplosion protection. For continued implosion pro-tection, replace the picture tube only with one ofthe same type number. Do not remove, install, orotherwise handle the picture tube in any mannerwithout first putting on shatterproof gogglesequipped with side shields. People not soequipped must be kept safely away while picturetubes are handled. Keep the picture tube awayfrom your body. Do not handle the picture tube byits neck. Some "in-line" picture tubes are equippedwith a permanently attached deflection yoke; be-cause of potential hazard, do not try to removesuch "permanently attached" yokes from the pic-ture tube.

5. Hot Chassis Warning - a. Some TV receiver chassis are electrically connect-

ed directly to one conductor of the AC power cordand maybe safety-serviced without an isolationtransformer only if the AC power plug is insertedso that the chassis is connected to the ground sideof the AC power source. To confirm that the ACpower plug is inserted correctly, with an AC volt-meter, measure between the chassis and a known

earth ground. If a voltage reading in excess of 1.0Vis obtained, remove and reinsert the AC powerplug in the opposite polarity and again measurethe voltage potential between the chassis and aknown earth ground.

b. Some TV receiver chassis normally have 85VAC(RMS) between chassis and earth ground re-gardless of the AC plug polarity. This chassis canbe safety-serviced only with an isolation transform-er inserted in the power line between the receiverand the AC power source, for both personnel andtest equipment protection.

c. Some TV receiver chassis have a secondaryground system in addition to the main chassisground. This secondary ground system is not iso-lated from the AC power line. The two ground sys-tems are electrically separated by insulationmaterial that must not be defeated or altered.

6. Observe original lead dress. Take extra care to as-sure correct lead dress in the following areas: a.near sharp edges, b. near thermally hot parts-besure that leads and components do not touch ther-mally hot parts, c. the AC supply, d. high voltage,and e. antenna wiring. Always inspect in all areasfor pinched, out of place, or frayed wiring. CheckAC power cord for damage.

7. Components, parts, and/or wiring that appear tohave overheated or are otherwise damagedshould be replaced with components, parts, or wir-ing that meet original specifications. Additionally,determine the cause of overheating and/or dam-age and, if necessary, take corrective action to re-move any potential safety hazard.

8. Product Safety Notice - Some electrical and me-chanical parts have special safety-related charac-teristics which are often not evident from visualinspection, nor can the protection they give neces-sarily be obtained by replacing them with compo-nents rated for higher voltage, wattage, etc.. Partsthat have special safety characteristics are identi-fied by a ( ! ) on schematics and in parts lists. Useof a substitute replacement that does not have thesame safety characteristics as the recommendedreplacement part might create shock, fire, and/orother hazards. The Product's Safety is under re-view continuously and new instructions are issuedwhenever appropriate. Prior to shipment from thefactory, our products are strictly inspected to con-firm with the recognized product safety and electri-cal codes of the countries in which they are to besold. However, in order to maintain such compli-ance, it is equally important to implement the fol-lowing precautions when a set is being serviced.

1-2-3 T6600SFTY

Precautions during Servicing A. Parts identified by the ( ! ) symbol are critical for

safety.Replace only with part number specified.

B. In addition to safety, other parts and assembliesare specified for conformance with regulations ap-plying to spurious radiation. These must also be re-placed only with specified replacements.Examples: RF converters, RF cables, noise block-ing capacitors, and noise blocking filters, etc.

C. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads D. Use specified insulating materials for hazardous

live parts. Note especially: 1) Insulation Tape 2) PVC tubing 3) Spacers 4) Insulators for transistors. E. When replacing AC primary side components

(transformers, power cord, etc.), wrap ends ofwires securely about the terminals before solder-ing.

F. Observe that the wires do not contact heat produc-ing parts (heatsinks, oxide metal film resistors, fus-ible resistors, etc.)

G. Check that replaced wires do not contact sharpedged or pointed parts.

H. When a power cord has been replaced, check that5~6 kg of force in any direction will not loosen it.

I. Also check areas surrounding repaired locations. J. Use care that foreign objects (screws, solder drop-

lets, etc.) do not remain inside the set. K. Crimp type wire connector

When replacing the power transformer in setswhere the connections between the power cordand power transformer primary lead wires are per-formed using crimp type connectors, in order toprevent shock hazards, perform carefully and pre-cisely the following steps.Replacement procedure

1) Remove the old connector by cutting the wires at apoint close to the connector. Important: Do not re-use a connector (discard it).

2) Strip about 15 mm of the insulation from the endsof the wires. If the wires are stranded, twist thestrands to avoid frayed conductors.

3) Align the lengths of the wires to be connected. In-sert the wires fully into the connector.

4) Use the crimping tool to crimp the metal sleeve atthe center position. Be sure to crimp fully to thecomplete closure of the tool.

L. When connecting or disconnecting the VCR con-nectors, first, disconnect the AC plug from AC sup-ply socket.

1-2-4 T6600SFTY

Safety Check after ServicingExamine the area surrounding the repaired location fordamage or deterioration. Observe that screws, partsand wires have been returned to original positions.Afterwards, perform the following tests and confirm thespecified values in order to verify compliance withsafety standards.

1. Clearance DistanceWhen replacing primary circuit components, confirmspecified clearance distance (d) and (d') between sol-dered terminals, and between terminals and surround-ing metallic parts. (See Fig. 1)

Table 1 : Ratings for selected area

Note: This table is unofficial and for reference only.Be sure to confirm the precise values.

2. Leakage Current TestConfirm the specified (or lower) leakage current be-tween B (earth ground, power cord plug prongs) andexternally exposed accessible parts (RF terminals, an-tenna terminals, video and audio input and output ter-minals, microphone jacks, earphone jacks, etc.).Measuring Method : (Power ON)Insert load Z between B (earth ground, power cordplug prongs) and exposed accessible parts. Use anAC voltmeter to measure across both terminals of loadZ. See Fig. 2 and following table.

Table 2: Leakage current ratings for selected areas

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

AC Line Voltage Clearance Distance (d), (d)

220 to 240 V 3mm(d) 6 mm(d)

Chassis or Secondary Conductor

dd

Primary Circuit Terminals

Fig. 1

Fig. 2

AC Voltmeter(High Impedance)

Exposed Accessible Part

B One side of Power Cord Plug Prongs

Z

AC Line Voltage Load Z Leakage Current (i) One side of power cord plug prongs (B) to:

220 to 240 V

2k RES. Connected in

paralleli0.7mA AC Peak

i2mA DCRF or

Antenna terminals

50k RES. Connected in

paralleli0.7mA AC Peak

i2mA DC A/V Input, Output

1-3-1 T6600STA

STANDARD NOTES FOR SERVICINGCircuit Board Indications1. The output pin of the 3 pin Regulator ICs is indi-

cated as shown:

2. For other ICs, pin 1 and every 5th pin is indicatedas shown:

3. The 1st pin of every pin connector are indicated asshown:

Instructions for Connectors1. When you connect or disconnect FFC cable (con-

nector), be sure to disconnect the AC cord.2. FFC cable (connector) should be inserted parallel

into the connector, not at an angle.

[ CBA= Circuit Board Assembly ]

How to Read the Values of the Rect-angular Type Chip ComponentsExample:(a) Resistor

(b) Capacitor

Caution:Once chip parts (Resistors, Capacitors, Transistors,etc.) are removed, they must not be reused. Alwaysuse a new part.

Pb (Lead) Free SolderPb free mark will be found on PCBs used Pb freesolder. (Refer to figure.) For PCBs with Pb freemark, be sure to use Pb free solder. For PCBswithout Pb free mark, use standard solder.

Replacement Procedures for Leadless (Chip) ComponentsThe Following Procedures are Recom-mended for the Replacement of the Lead-less Components Used in this Unit.1. Preparation for replacement1.1. Pb free soldera. Soldering Iron

Use a soldering iron for Pb free solder.b. Solder

Be sure to use Pb free solder.c. Soldering time

Do not apply heat for more than 4 seconds.d. Preheating

Leadless capacitor must be preheated beforeinstallation. (130C~150C, for about two minutes.)

Top View

Out In

Bottom ViewInput

5

10

Pin 1

Pin 1

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

(Top View)

473= 473 = 47 [k]

(Top View)= Not Shown

Pb free mark

1-3-2 T6600STA

1.2. Standard soldere. Soldering Iron

Use a pencil-type soldering iron (less than 30watts).

f. SolderEutectic solder (Tin 63%, Lead 37%) is recom-mended.

g. Soldering timeDo not apply heat for more than 4 seconds.

h. PreheatingLeadless capacitor must be preheated beforeinstallation. (130C~150C, for about two minutes.)

Notes:a. Leadless components must not be reused after

removal.b. Excessive mechanical stress and rubbing for the

component electrode must be avoided.2. Removing the leadless componentGrasp the leadless component body with tweezersand alternately apply heat to both electrodes. Whenthe solder on both electrodes has melted, removeleadless component with a twisting motion.Notes:a. Do not attempt to lift the component off the board

until the component is completely disconnectedfrom the board by the twisting action.

b. Take care not to break the copper foil on the printedboard

3. Installing the leadless componenta. Presolder the contact points of the circuit board.b. Press the part downward with tweezers and solder

both electrodes as shown below.

Note:Do not glue the replacement leadless component tothe circuit board.

How to Remove / Install Flat Pack ICCaution:1. The Flat Pack-IC shape may differ by models. Use

an appropriate hot-air flat pack-IC desoldering ma-chine, whose shape matches that of the Flat Pack-IC.

2. Do not apply the hot air to the chip parts around theFlat Pack-IC for over 6 seconds as damage mayoccur to the chip parts. Put Masking Tape aroundthe Flat Pack-IC to protect other parts from dam-age. (Fig. S-1-2)

3. The Flat Pack-IC on the CBA is affixed with glue, sobe careful not to break or damage the foil of eachpin or solder lands under the IC when removing it.

1. RemovalWith Hot - Air Flat Pack - IC Desoldering Machine:a. Prepare the Hot - Air Flat Pack - IC Desoldering

Machine, then apply hot air to Flat Pack - IC (about5~6 seconds). (Fig. S-1-1)

b. Remove the Flat Pack- IC with tweezers whileapplying the hot air.

With Soldering Iron:a. Using desoldering braid, remove the solder from all

pins of the Flat Pack - IC. When you use solder fluxwhich is applied to all pins of the Flat Pack - IC, youcan remove it easily. (Fig. S-1-3)

b. Lift each lead of the Flat Pack - IC upward one byone, using a sharp pin or wire to which solder willnot adhere (iron wire). When heating the pins, usea fine tip soldering iron or a hot air DesolderingMachine. (Fig. S-1-4)

With Iron Wire:a. Using desoldering braid, remove the solder from all

pins of the Flat Pack - IC. When you use solder fluxwhich is applied to all pins of the Flat Pack - IC, youcan remove it easily. (Fig. S-1-3)

Chip

Tweezers

Soldering Iron

Soldering IronTweezers

Solder

Soldering Iron

Presolder

1-3-3 T6600STA

b. Affix the wire to a workbench or solid mountingpoint, as shown in Fig. S-1-5.

c. Pull up on the wire as the solder melts so as to liftthe IC leads from the CBA contact pads, whileheating the pins using a fine tip soldering iron orhot air blower.

Note:When using a soldering iron, care must be takento ensure that the Flat Pack - IC is not being heldby glue, or when it is removed from the CBA, itmay be damaged if force is used.

2. Installationa. Using desoldering braid, remove the solder from

the foil of each pin of the Flat Pack - IC on the CBA,so you can install a replacement Flat Pack - ICmore easily.

b. The "I" mark on the Flat Pack - IC indicates pin 1(See Fig. S-1-6). Make sure this mark matches the1 on the CBA when positioning for installation.Then pre - solder the four corners of the Flat Pack-IC (See Fig. S-1-7).

c. Solder all pins of the Flat Pack - IC. Make sure thatnone of the pins have solder bridges.

Fig. S-1-1

Fig. S-1-2

Hot-airFlat Pack-ICDesolderingMachineCBA

Flat Pack-IC

Tweezers

Masking Tape

Fig. S-1-3

Flat Pack-IC Desoldering Braid

Soldering Iron

Fig. S-1-4

Fine TipSoldering Iron

SharpPin

Fig. S-1-5

To Solid Mounting Point

Soldering Iron

Iron Wire

or

Hot Air Blower

Fig. S-1-6

Example :

Pin 1 of the Flat Pack-ICis indicated by a " " mark.

1-3-4 T6600STA

Instructions for Handling SemiconductorsElectrostatic breakdown of the semiconductors mayoccur due to a potential difference caused by electro-static charge during unpacking or repair work.

Ground for Human BodyBe sure to wear a grounding band (1M) that is prop-erly grounded to remove any static electricity that maybe charged on the body.

Ground for Work BenchBe sure to place a conductive sheet or copper platewith proper grounding (1M) on the work bench orother surface, where the semiconductors are to beplaced. Because the static electricity charge on theclothing will not escape through the body groundingband, be careful to avoid contacting semiconductors toclothing.

Fig. S-1-7

Presolder

CBA

Flat Pack-IC

CBA

Grounding Band

Conductive Sheet orCopper Plate

1M

1M

CBA

1-4-1 T6600PFS

PREPARATION FOR SERVICINGHow to Enter the Service ModeCaution: 11. Optical sensors system are used for Tape Start and

End Sensor on this equipment. Read this pagecarefully and prepare as described on this pagebefore starting to service; otherwise, the unit mayoperate unexpectedly.

Preparing: 11. Cover Q202 (START SENSOR) and Q201 (END

SENSOR) with Insulation Tape or enter the servicemode to activate Sensor Inhibition automatically.

Note: Avoid playing, rewinding or fast forwarding thetape to its beginning or end, because both Tape EndSensors are not active. How to Enter the Service Mode1. Turn the power on. (Use main power on the TV

unit.)2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] but-

tons on the remote control unit in that order within 5seconds. When entering the service mode, 4 willdisplay at corners of the screen.

3. During the service mode, electrical adjustmentmode can be selected by remote control key. Details are as follows.

Caution: 21. The deck mechanism assembly is mounted on the

Main CBA directly, and SW211 (REC-SAFETYSW) is mounted on the Main CBA. When deckmechanism assembly is removed from the MainCBA due to servicing, this switch can not be oper-ated automatically.

Preparing: 21. To eject the tape, press the STOP/EJECT button

on the unit (or Remote Control).2. When you want to record during the Service mode,

press the Rec button while depressing SW211(REC-SAFETY SW) on the Main CBA.

Key Adjustment Mode

MENU

Picture adjustment mode: Press the MENU button to change from BRT (Bright), *CNT (Contrast), *COL (Color), *TNT(Tint) and SHP(SHARP). Press PROG+/PROG- key to adjust Initial Value. *Marked items are not necessary to adjust normally.

VOL-

SECAM Black Level adjustment mode: See adjustment instructions page 1-6-3.Cut-Off adjustment mode: See adjust-ment instructions page 1-6-4.White Balance adjustment mode: See adjustment instructions page 1-6-5.

0 C-Trap adjustment mode: See adjust-ment instructions page 1-6-3.

1 No need to use.

2 H adjustment mode: See adjustment instructions page 1-6-2.

3Head switching point adjustment mode (Auto adjustment): See adjustment instructions page 1-6-7.

4Auto record mode: Perform recording (15 Sec.)-->Stop-->Rewind (Zero return) automatically.

5Head switching point adjustment mode (Manual adjustment): See adjustment instructions page 1-6-7.

6 No need to use.7 No need to use.

8 H. Shift adjustment mode: See adjust-ment instructions page 1-6-4.

9 V.size/V. shift adjustment: See adjust-ment instructions page 1-6-4.

Key Adjustment Mode

(START SENSOR)(END SENSOR)

(REC-SAFETY SW) MAIN CBA

Q201

SW211

Q202

1-5-1 T6605DC

CABINET DISASSEMBLY INSTRUCTIONS[ T6605VF ]1. Disassembly FlowchartThis flowchart indicates the disassembly steps for thecabinet parts, and the CBA in order to gain access toitem(s) to be serviced. When reassembling, follow thesteps in reverse order. Bend, route and dress thecables as they were.Caution !!When removing the CRT, be sure to discharge theAnode Lead of the CRT with the CRT Ground Wirebefore removing the Anode Cap.

2. Disassembly Method

(1): Order of steps in Procedure. When reassembling,follow the steps in reverse order.These numbersare also used as the identification (location) No. ofparts in Figures.

(2): Parts to be removed or installed.(3): Fig. No. showing Procedure of Part Location.(4): Identification of part to be removed, unhooked,

unlocked, released, unplugged, unclamped, ordesoldered.S=Screw, P=Spring, L=Locking Tab, CN=Connec-tor, *=Unhook, Unlock, Release, Unplug, or Desol-der2(S-2) = two Screw (S-2)

(5): Refer to the following "Reference Notes in theTable."

Reference Notes in the Table1. Removal of the Rear Cabinet.

Remove four screws (S-1) and two screws (S-2).Disconnect connector CN151 and remove the RearCabinet.

Caution !!Discharge the Anode Lead of the CRT with the CRTGround Wire before removing the Anode Cap.2. Removal of the Power Unit and Tray Chassis Unit.

Discharge the Anode Lead of the CRT with theCRT Ground before removing the Anode Cap.Disconnect the following: Anode Cap, CN501,CN551, CN601, CRT CBA, and Power Button.Then pull the Power Unit and Tray Chassis Unit outbackward.

3. Removal of the Power Unit. Disconnect connectors CN502, CN552, andCN602. Then slide the Power Unit out.

4. Removal of the H.V./Power Supply CBA. Remove six screws (S-3) and pull up the H.V./Power Supply CBA.

5. Removal of the Top Cover.Remove five screws (S-4) and CL604, and removethe Top Cover.

ID/LOC.No.

PART

REMOVAL

Fig. No.

REMOVE/*UNHOOK/UNLOCK/RELEASE/UNPLUG/DESOLDER

Note

[1] Rear Cabinet 1,2,54(S-1), 2(S-2), *CN151 1

[2]Power Unit and Tray Chassis Unit

3,4,5

Anode Cap, *CN501, *CN551, *CN601, CRT CBA, Power Knob

2

[3] Power Unit 3,5 *CN502, *CN552, *CN602 3

[4]Tray Chassis Unit

3 ---------- -

[5]H.V./Power Supply CBA

3 6(S-3) 4

[6] Top Cover 3 5(S-4), CL604 5[7] Bottom Plate 3 (S-5) 6

[1] Rear Cabinet

[2] Power Unit and Tray Chassis Unit

[3] Power Unit[5] H.V./PowerSupply CBA

[4] Tray Chassis Unit

[6] Top Cover

[7] Bottom Plate

[8] Deck Unit

[9] Main CBA

[10] CRT

[8] Deck Unit 3, 57(S-6), (S-7), (S-8), Desolder *(CN201, CL401, CL402, CL403)

7

[9] Main CBA 3 4(S-9) 8[10] CRT 4 4(S-10) 9(1)

(2)

(3)

(4)

(5)

ID/LOC.No.

PART

REMOVAL

Fig. No.


Note

1-5-2 T6605DC

6. Removal of the Bottom Plate.Remove a screw (S-5). Then slide the Bottom Plateout front.

7. Removal of the Deck Unit.Remove seven screws (S-6), screw (S-7) andscrew (S-8). Then, desolder connectors (CN201,CL401, CL402, CL403) and lift up the Deck Unit.

8. Removal of the Main CBA. Remove four screws (S-9) and pull up the MainCBA.

9. Removal of the CRT. Remove four screws (S-10) and pull the CRT back-ward.

(S-1)

(S-2)(S-2)

[1] REAR CABINET

(S-1) Fig. 1

(S-1) (S-1)

(S-1)(S-2)

(S-1)

(S-2)

[1] REAR CABINET Fig. 2

1-5-3 T6605DC

A

A

(S-7) (S-8)

Fig. 3


[5] H.V./Power Supply CBA

(S-3)(S-3)

[3] Power Unit

Power Button

(S-3)

(S-4)

(S-4)

(S-4)

(S-5)

[7] Bottom Plate

CL604(S-4)(S-6)

(S-9)(S-9)

(S-9)

(S-9)

(S-6)

(S-6)

(S-6)

[8] Deck Unit

[6] Top Cover

[9] Main CBA


1-5-4 T6605DC

Fig. 4

(S-10)

(S-10)

(S-10)

(S-10)Anode Cap

[10] CRT

CRT CBA

1-5-5 T6605DC

CN151

TO SPEAKER

FE HEAD

CYLINDER ASSEMBLY

ACE HEADASSEMBLY

CAPSTANMOTOR

DECK UNIT

CN201

CL402

CL401

CL403

CL302A

CL603A

CL301A

MAIN CBA

CN501SCREEN FOCUS

CN502

CN501B

CL501A

CN601

CN552

CN551

CN602

CRT

ANODE

GND

H.V./POWER SUPPLY CBA

TO DEGAUSS COIL

CRT CBA

Fig. 5

CL604TO TOP COVER

1-5-6 T6705DC

[ T6607VF ]1. Disassembly FlowchartThis flowchart indicates the disassembly steps for thecabinet parts, and the CBA in order to gain access toitem(s) to be serviced. When reassembling, follow thesteps in reverse order. Bend, route and dress thecables as they were.Caution !!When removing the CRT, be sure to discharge theAnode Lead of the CRT with the CRT Ground Wirebefore removing the Anode Cap.

2. Disassembly Method

(1): Order of steps in Procedure. When reassembling,follow the steps in reverse order.These numbersare also used as the identification (location) No. ofparts in Figures.

(2): Parts to be removed or installed.(3): Fig. No. showing Procedure of Part Location.(4): Identification of part to be removed, unhooked,

unlocked, released, unplugged, unclamped, ordesoldered.S=Screw, P=Spring, L=Locking Tab, CN=Connec-tor, *=Unhook, Unlock, Release, Unplug, or Desol-der2(S-2) = two Screw (S-2)

(5): Refer to the following "Reference Notes in theTable."

Reference Notes in the Table1. Removal of the Rear Cabinet.

Remove six screws (S-1) and two screws (S-2).Disconnect connector CN151 and remove the RearCabinet.

Caution !!Discharge the Anode Lead of the CRT with the CRTGround Wire before removing the Anode Cap.2. Removal of the Power Unit and Tray Chassis Unit.

Discharge the Anode Lead of the CRT with theCRT Ground before removing the Anode Cap.Disconnect the following: Anode Cap, CN501,CN551, CN601, CRT CBA, and Power Button.Then pull the Power Unit and Tray Chassis Unit outbackward.

3. Removal of the Power Unit. Disconnect connectors CN502, CN552, andCN602. Then slide the Power Unit out.

4. Removal of the H.V./Power Supply CBA. Remove six screws (S-3) and pull up the H.V./Power Supply CBA.

5. Removal of the Top Cover.Remove five screws (S-4) and CL604, and removethe Top Cover.

ID/LOC.No.

PART

REMOVAL

Fig. No.


Note

[1] Rear Cabinet 1,2,56(S-1), 2(S-2), *CN151 1

[2]Power Unit and Tray Chassis Unit

3,4,5

Anode Cap, *CN501, *CN551, *CN601, CRT CBA, Power Knob

2

[3] Power Unit 3,5 *CN502, *CN552, *CN602 3

[4]Tray Chassis Unit

3 ---------- -

[5]H.V./Power Supply CBA

3 6(S-3) 4

[6] Top Cover 3 5(S-4), CL604 5[7] Bottom Plate 3 (S-5) 6

[1] Rear Cabinet


[3] Power Unit[5] H.V./PowerSupply CBA


[6] Top Cover

[7] Bottom Plate

[8] Deck Unit

[9] Main CBA

[10] CRT

[8] Deck Unit 3, 57(S-6), (S-7), (S-8), Desolder *(CN201, CL401, CL402, CL403)

7

[9] Main CBA 3 4(S-9) 8[10] CRT 4 4(S-10) 9(1)

(2)

(3)

(4)

(5)

ID/LOC.No.

PART

REMOVAL

Fig. No.


Note

1-5-7 T6705DC

6. Removal of the Bottom Plate.Remove a screw (S-5). Then slide the Bottom Plateout front.

7. Removal of the Deck Unit.Remove seven screws (S-6), screw (S-7) andscrew (S-8). Then, desolder connectors (CN201,CL401, CL402, CL403) and lift up the Deck Unit.

8. Removal of the Main CBA. Remove four screws (S-9) and pull up the MainCBA.

9. Removal of the CRT. Remove four screws (S-10) and pull the CRT back-ward.

(S-2)

(S-1)

(S-1)

(S-1)

(S-1) (S-1)

(S-1)

(S-2)

[1] REAR CABINET

Fig. 1

(S-1)(S-1)

(S-1)

(S-1)(S-1)(S-1)

(S-2)

[1] REAR CABINET Fig. 2

1-5-8 T6705DC

(S-7) (S-8)

A

A

Fig. 3


[5] H.V./Power Supply CBA

(S-3)

(S-3)

(S-3)

[3] Power Unit

Power Button

(S-3)

(S-4)(S-4)

(S-5)

[7] Bottom Plate

(S-4)

CL604

(S-4)

(S-4)(S-6)

(S-9)(S-9)

(S-9)

(S-9)

(S-6)

(S-6)

(S-6)

[8] Deck Unit

[6] Top Cover

[9] Main CBA


1-5-9 T6705DC

Fig. 4

(S-10)

(S-10)

(S-10)

(S-10) Anode Cap

[10] CRT

CRT CBA

1-5-10 T6705DC

CN151

TO SPEAKER

FE HEAD

CYLINDER ASSEMBLY

ACE HEADASSEMBLY

CAPSTANMOTOR

DECK UNIT

CN201

CL402

CL401

CL403

CL302A

CL603A

CL301A

MAIN CBA

CN501SCREEN FOCUS

CN502

CN501B

CL501A

CN601

CN552

CN551

CN602

CRT

ANODE

GND

H.V./POWER SUPPLY CBA

TO DEGAUSS COIL

CRT CBA

Fig. 5

CL604TO TOP COVER

1-6-1 T6605EA

ELECTRICAL ADJUSTMENT INSTRUCTIONSGeneral Note:

"CBA" is abbreviation for "Circuit Board Assembly."

NOTE: Electrical adjustments are required after replacingcircuit components and certain mechanical parts.It is important to perform these adjustments onlyafter all repairs and replacements have been com-pleted.Also, do not attempt these adjustments unless theproper equipment is available.

Test Equipment Required1. PAL Pattern Generator (Color Bar, Monoscope,

Black Raster, White Raster, Sympte)2. SECAM Pattern Generator (Gray Scale)3. AC Milli Voltmeter (RMS)4. Alignment Tape (FL6A), Blank Tape (E180)5. DC Voltmeter6. Oscilloscope: Dual-trace with 10:1 probe,

V-Range: 0.001~50V/Div,F-Range: DC~AC-60MHz

7. Frequency Counter8. Plastic Tip Driver9. RF input (at each broadcasting system)

Receiving Channel : VHF LowInput level : 80dBV

10.Ext.inputFRONT VIDEO-IN JACK or REAR SCART JACK

How to Set up the Service mode:NOTE:

After replacing the IC202 (Memory) or Main CBA,the set value in IC202 (Memory) will be lost. So itis necessary to set up or adjust in the Servicemode after its replacement.

Service Mode:1. Turn the power on. (Use main power on the TV

unit.)2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] but-

tons on the remote control unit in that order within 5seconds.

- To cancel the service mode, press [STANDBY/ON]button on the remote control.

How to set up the option code1. Enter the Service mode.2. Press the [STATUS] button on the remote control

unit. The option code appears on the display.3. If needed, input the option code (0130) using num-

ber buttons on the remote control unit.

4. To reset the software, press [PAUSE] and [5] but-tons on the remote control unit.The option code is changed.

1-6-2 T6605EA

[ T6605VF ]1. DC 105V (+B) AdjustmentPurpose: To obtain correct operation.Symptom of Misadjustment: The picture is dark andunit does not operate correctly.

Note: TP503(+B), TP504(GND), VR601 --- H.V./PowerSupply CBA1. Connect the unit to AC Power Outlet. (exact

AC230V)2. Input a color bar signal from RF (or Ext.) input and

leave it for at least 20 minutes. 3. Connect DC Volt Meter to TP503(+B) and

TP504(GND).4. Adjust VR601 so that the voltage of TP503(+B)

becomes +1050.5V DC.

[ T6705VF ]1. DC 114V (+B) AdjustmentPurpose: To obtain correct operation.Symptom of Misadjustment: The picture is dark andunit does not operate correctly.

Note: TP503(+B), TP504(GND), VR601 --- H.V./PowerSupply CBA1. Connect the unit to AC Power Outlet. (exact

AC230V)2. Input a color bar signal from RF (or Ext.) input and

leave it for at least 20 minutes. 3. Connect DC Volt Meter to TP503(+B) and

TP504(GND).4. Adjust VR601 so that the voltage of TP503(+B)

becomes +1140.5V DC.

2. H AdjustmentPurpose: To get correct horizontal position and size ofscreen image.Symptom of Misadjustment: Horizontal position andsize of screen image may not be properly displayed.

Note: R590 --- H.V./Power Supply CBA1. Connect Frequency Counter to R590.2. Set the unit to the Ext. mode and no input is neces-

sary. Enter the Service mode. (See page 1-6-1.)

3. Operate the unit for at least 20 minutes.4. Press [2] button on the remote control unit and

select H-Adj mode. 5. Press [PROG+/PROG-] buttons on the remote con-

trol unit so that the display will change [0] to [7.] At this moment, choose display [0] to [7] when theFrequency counter display is closest to15.625kHz250Hz.

6. Turn the power off and on again.

Test point Adj. Point Mode InputTP503(+B),

TP504(GND)

VR601 RF(or Ext.)Color Bar

Tape M. EQ. Spec.

---

DC Voltmeter,Plastic Tip Driver +1050.5V DC

Test point Adj. Point Mode InputTP503(+B),

TP504(GND)

VR601 RF(or Ext.)Color Bar

Tape M. EQ. Spec.

---

DC Voltmeter,Plastic Tip Driver +1140.5V DC

Test point Adj. Point Mode Input

R590 PROG+/PROG- buttons Ext. ---

Tape M. EQ. Spec.

--- Frequency Counter 15.625kHz250Hz

1-6-3 T6605EA

3. C-Trap AdjustmentPurpose: To get minimum leakage of the color signalcarrier.Symptom of Misadjustment: If C-Trap Adjustment isincorrect, stripes will appear on the screen.

Note: J349F3 (B-Out)--- Main CBA1. Connect Oscilloscope to J349F3.2. Input a color bar signal from RF (or Ext.) input.

Enter the Service mode. (See page 1-6-1.) 3. Press [0] button on the remote control unit and

select C-TRAP mode. 4. Press [PROG+/PROG-] buttons on the remote con-

trol unit so that the carrier leakage B-Out(4.43MHz) value becomes minimum on the oscillo-scope.


4. SECAM Black Level AdjustmentPurpose: To set Black Level of the SECAM signal R-Y/B-Y to Ref. level.Symptom of Misadjustment: If Black Level of theSECAM signal R-Y/B-Y is incorrect, the picture is blu-ish or reddish in grayscale compared with PAL signal.

1. Degauss the CRT and allow CRT to operate for 20minutes before starting the alignment.

2. Input the SECAM Gray Scale signal from Ext.input.

3. Enter the service mode. (See page 1-6-1.) 4. To enter the C/D/S mode, press [VOL-] on the

remote control unit.5. To select SBR (SECAM Black Level R-Y), press [6]

button on the remote control unit.6. Press [PROG+/PROG-] buttons to adjust Y signal

to the black ref. level.7. To select SBB (SECAM Black Level B-Y), press [7]

button on the remote control unit.8. Press [PROG+/PROG-] buttons to adjust Y signal

to the black ref. level.

Test point Adj. Point Mode InputJ349F3(B-OUT)

PROG+/PROG- buttons

RF(or Ext.) Color Bar

Tape M. EQ. Spec.

---

Oscilloscope,Pattern Generator 200mVp-p Max.

Figure

minimum

Fig. 1


J361G4 PROG+/PROG- buttons Ext.SECAM

Gray Scale

Tape M. EQ. Spec.

---

Pattern Generator, Analog Oscilloscope (unus-able Digital Oscilloscope)

---

5mV/Div (10:1 Prove)

Y Signal

1H

1H

1HBlack REF. Level

Fig. 4

1-6-4 T6605EA

5. V. Size AdjustmentPurpose: To obtain correct vertical height of screenimage.Symptom of Misadjustment: If V. Size is incorrect,vertical height of image on the screen may not beproperly displayed.

1. Enter the Service mode. (See page 1-6-1.) Press [9] button on the remote control unit andselect V-S mode. (Press [9] button then display willchange to V-P and V-S).

2. Input monoscope pattern and leave it for at least 20minutes.

3. Press [PROG+/PROG-] buttons on the remote con-trol unit so that the monoscope pattern is 905% ofdisplay size and the circle is round.

6. V. Shift AdjustmentPurpose: To obtain correct vertical position of screenimage.Symptom of Misadjustment: If V. position is incor-rect, vertical position of image on the screen may notbe properly displayed.

1. Enter the Service mode. (See page 1-6-1.) Press [9] button on the remote control unit andselect V-P mode. (Press [9] button then display willchange to V-P and V-S).


3. Press [PROG+/PROG-] buttons on the remote con-trol unit so that the top and bottom of the mono-scope pattern are equal to each other.

7. H. Shift AdjustmentPurpose: To obtain correct horizontal position andsize of screen image.Symptom of Misadjustment: Horizontal position andsize of screen image may not be properly displayed.

1. Enter the Service mode. (See page 1-6-1.) Press [8] button on the remote control unit andselect H-P mode.


3. Press [PROG+/PROG-] buttons on the remote con-trol unit so that the left and right side of the mono-scope pattern are equal to each other.


8. Cut-off AdjustmentPurpose: To adjust the beam current of R, G, B, andscreen voltage.Symptom of Misadjustment: White color may bereddish, greenish or bluish.

Notes: Screen Control (FBT) --- H.V./Power Supply CBAFBT= Fly Back TransformerUse the Remote Control Unit

1. Degauss the CRT and allow CRT to operate for 20minutes before starting the alignment.

2. Set the screen control to minimum position. Inputthe Black raster signal from RF (or Ext.) input.

3. Enter the service mode. (See page 1-6-1.)Dimmed horizontal line appears on the CRT.

4. To enter the C/D/S mode, press the [VOL-] buttonon the remote control unit.

5. To enter the CUT OFF (R) mode, press [1] buttonon the remote control unit.

6. Turn the screen control up until dimmed horizontalline appears.


Screen PROG+/PROG- buttonsRF

(or Ext.) Monoscope

Tape M. EQ. Spec.

--- Pattern Generator 905%



(or Ext.) Monoscope

Tape M. EQ. Spec.




(or Ext.) Monoscope

Tape M. EQ. Spec.



ScreenScreen-Control, PROG+/PROG-

buttonsRF

(or Ext.)Black Ras-

ter

Tape M. EQ. Spec.

--- Pattern Generator See Reference Notes below

1-6-5 T6605EA

7. Press the [PROG+/PROG-] buttons until the hori-zontal line becomes white.

8. To enter the CUT OFF (G) mode, press [2] buttonon the remote control unit.

9. Press the [PROG+/PROG-] buttons until the hori-zontal line becomes white.

10.To enter the CUT OFF (B) mode, press [3] buttonon the remote control unit.

11.Press the [PROG+/PROG-] buttons until the hori-zontal line becomes white.

12.Turn the screen control so that the horizontal lineadjusted white looks lightly.

13.Turn the power off and on again.

9. White Balance AdjustmentPurpose: To mix red, green and blue beams correctlyfor pure white. Symptom of Misadjustment: White becomes bluishor reddish.

Note: Use remote control unit 1. Operate the unit more than 20 minutes. 2. Face the unit to east. Degauss the CRT using De-

gaussing Coil. 3. Input the White Raster (APL 100%). 4. Set the color analyzer to the CHROMA mode and

after zero point calibration, bring the optical recep-tor to the center on the tube surface (CRT).

5. Enter the Service mode. Press [VOL-] button onthe remote control.

6. Press [4] button on the remote control unit for Redadjustment. Press [5] button on the remote controlunit for Blue adjustment.

7. In each color mode, Press [PROG+/PROG-] but-tons to adjust the values of color.

8. Adjusting Red and Blue color so that the tempera-ture becomes 8500K (x : 290 / y : 300) 3%.

9. At this time, Re-check that Horizontal line is white.If not, Re-adjust Cut-off Adjustment until the Hori-zontal Line becomes pure white.

10. Turn off and on again to return to normal mode. Re-ceive APL 100% white signal and Check Chromatemperatures become 8500K (x : 290 / y : 300) 3%.

Note: Confirm that Cut Off Adj. is correct after thisadjustment, and attempt Cut Off Adj. if needed.


ScreenScreen-Control,PROG+/PROG-

buttonsRF

(or Ext.)White Raster

(APL 100%)Tape M. EQ. Spec.

---

Pattern Generator,Color analyzer See below

Figure

Color Ajalyzer Fig. 5

1-6-6 T6605EA

10. Sub-Brightness AdjustmentPurpose: To get proper brightness.Symptom of Misadjustment: If Sub-Brightness isincorrect, proper brightness cannot be obtained byadjusting the Brightness Control.

Note: Bar (A) in Fig. 7 --- 0 IRE1. Enter the service mode. (See page 1-6-1.)

Then input SYMPTE signal from RF (or Ext.) inputand leave it for at least 20 minutes.

2. Press [MENU] button. (Each time [MENU] button ispressed, display will change BRT, CNT, COL, TNT,and SHP in that order.) Select BRT and press[PROG+/PROG-] buttons so that the bar (A) in Fig.6 is just visible.


11. Setting for CONTRAST, COLOR, TINT and SHARP Data ValuesGeneral 1. Enter the Service mode. (See page 1-6-1) 2. Press [MENU] button. (Each time [MENU] button is

pressed, display will change BRT, CNT, COL, TNT,and SHP in that order.)

CONTRAST (CNT) 1. Press [MENU] button on the remote control unit.

Then select CNT display. 2. Press [PROG+/PROG-] buttons on the remote

control unit so that the value of "CONTRAST"(CNT) becomes 83.

COLOR (COL) 1. Press [MENU] button on the remote control unit.

Then select "COLOR" (COL) display. 2. Press [PROG+/PROG-] buttons on the remote

control unit so that the value of "COLOR" (COL)becomes 65.

TINT (TNT) 1. Press [MENU] button on the remote control unit.

Then select "TINT" (TNT) display. 2. Press [PROG+/PROG-] buttons on the remote

control unit so that the value of "TINT" (TNT) be-comes 68.

SHARP (SHP)[ T6605VF ] 1. Press [MENU] button on the remote control unit.

Then select "SHARP" (SHP) display. 2. Press [PROG+/PROG-] buttons on the remote

control unit and select "1."

[ T6705VF ] 1. Press [MENU] button on the remote control unit.

Then select "SHARP" (SHP) display. 2. Press [PROG+/PROG-] buttons on the remote

control unit and select "0."



(or Ext.) SYMPTE

Tape M. EQ. Spec.

---

PatternGenerator See below

Figure

BlackWhite

This bar(A) justvisibleA B C

Fig. 6

1-6-7 T6605EA

12. Focus AdjustmentPurpose: Set the optimum Focus.Symptom of Misadjustment: If Focus Adjustment isincorrect, blurred images are shown on the display.

Note: Focus VR (FBT) --- H.V./Power Supply CBA FBT= Fly Back Transformer1. Operate the unit more than 30 minutes.2. Face the unit to the East and degauss the CRT

using a Degaussing Coil.3. Input the monoscope pattern.4. Adjust the Focus Control on the FBT to obtain clear

picture.

13. Head Switching Position AdjustmentPurpose: Determine the Head Switching Position dur-ing Playback.Symptom of Misadjustment: May cause HeadSwitching Noise or Vertical Jitter in the picture.Note: Unit reads Head Switching Position automati-cally and displays it on the screen (Upper Left Corner).Manual Adjustment1. Enter the service mode. (See page 1-6-1.) 2. Playback the test tape (FL6A).3. Press the number [5] button on the remote control

unit.4. The Head Switching position will display on the

screen; if adjustment is necessary follow step 4.7.0H (448s) is preferable.

5. Press [PROG+/PROG-] buttons on the remote con-trol unit if necessary. The value will be changed in0.5H steps up or down. Adjustable range is up to9.5H. If the value is beyond adjustable range, thedisplay will change as:

Lower out of range: 0.0HUpper out of range: -.-H


Auto Adjustment1. Load the test tape (FL6A) that have been recorded

the Head Switching Position Value. 2. Enter the service mode.3. Press [3] button on the remote control unit in the

tape stop mode. The unit playback and adjust theHead Switching Position automatically.

4. The adjusting report appears on upper left cornerof the screen with blueback. In case of adjusting correctly: the Head SwitchingPosition Value recorded in the test tape (FL6A) isindicated with green. In case of adjusting incorrectly: "NG" (red) is indi-cated with ejecting tape.

l


Screen Focus Control RF(or Ext.) Monoscope

Tape M. EQ. Spec.

--- Pattern Generator See below.

NG

Incorrect

7.0H

Correct

TVCR TVCR

Fig. 7

1-7-1

BLOCK DIAGRAMSServo/System Control Block Diagram

T6605BLS

CONT

ROL

HEA

D

CL40

2 A

C HE

AD A

SSEM

BLY

MA

IN C

BA

KEY-

2

RF-

SW

ST-S

ENS.

T-R

EEL

KEY-

1

DV-

SYNC

C-SY

NCC-

SYNC

V-EN

V

REM

OTE

CTL(+

)

RES

ET

C-RO

TA

REC

-SAF

ETY

A-M

UTE-

H

SCL

SDA

A-M

UTE-

H

CTL(-

)

RF-

SW

DV-

SYNC

V-EN

VC-

ROTA

END

-SEN

S.

IC20

1(S

ERVO

/SYS

TEM

CONT

ROL)

14 9495 10 4 80 34

18156137431207287R

S201

REM

OTE

SENS

OR

CTL

AMP-

OUT

97

AL+5

V

D20

1S-

LED

CTL

TP00

1

(DEC

K A

SSEM

BLY)

END

-SEN

S.T-

REE

LST

-SEN

S.Q2

02Q2

05Q2

01

Q204

RES

ETTI

MER

+5V

47

EXT-

L

SP-M

UTE

SP-M

UTE

44

SW21

1R

EC SAFE

TY

TO

VID

EO B

LOCK

TO

AUDI

O B

LOCK

KEY

SWIT

CH

KEY

SWIT

CHSW

201

SW

205

SCL

(MEM

ORY)

SDA

6 5

REC

-LED

24R

EC-L

ED23

P-D

OW

N-L

85P-

ON-

HP-

DO

WN-

LP-

ON-

H67

D20

2R

ECAL

+5V

LD-S

W9

I2 C-O

PEN

4571

AL+5

VSW

212

LD-S

W

CS7

TO P

OW

ER

SUPP

LY B

LOCK

SW20

6

SW21

0

SDA

SCL

TO

TV B

LOCK

SDA

SCL

IC20

2

WF3

I2 C-O

PEN

M

M

LOAD

ING

MO

TOR

CYLI

NDER

ASS

EMBL

YCA

PSTA

N M

OTO

R

SENS

OR

CBA

(ST-

SENS

OR)

SENS

OR

CBA

(END

-SEN

SOR)

DR

UMM

OTO

R

PG SENS

OR

4C-

F/R

1CM

+12V

11AL

+12V

(1)

2P-

ON+

5V(3)

6FG

-GND

3C-

FG

5C-

CONT

10M

-GND

7LD

-CO

NT8

D-C

ONT

9D

-PFG

12VG

CN20

1

C-FG

C-CO

NT

D-P

FG

C-F/

R

907687 78

LD-C

ONT

81D

-CO

NT77

CM+1

2V

AL+1

2V(1)

P-O

N+5V

(3)

MCA

PSTA

NM

OTO

R

D-R

EC-H

D-R

EC-H

SDA

SCL

42 48 29

EXT-

LSC

ART-

HSC

ART-

MUT

E

SCAR

T-H

SCAR

T-M

UTE

D20

4ST

AND

BY

2CT

L(+)

1CT

L(-)

+33

V

1-7-2 T6605BLV

Video Block Diagram

CYLI

NDER

ASS

EMBL

Y

V(R)

V-CO

MV(

L)

CL40

11 2 3

(D

ECK

ASSE

MBLY

)

VID

EO (R

) H

EAD

SP HEAD

AMP

REC

FM

AGC

TO S

ERVO

/SYS

TEM

CONT

ROL

BLO

CK

TO

SERV

O/S

YSTE

MCO

NTRO

L BL

OCK

C-SY

NC

RF-

SWD

-REC

-H

C-RO

TAD

V-SY

NC

V-EN

V

LUM

INAN

CESI

GNA

L PR

OCE

SS

CHRO

MIN

ANCE

SIG

NAL

PRO

CESS

C-SY

NCV-

ENV

DV-

SYNC

RF-

SW/C

-RO

TA

VID

EO (L

) H

EAD

IC40

1(V

IDEO

/AUD

IO S

IGNA

L PRO

CESS

)

REC

-VID

EO S

IGNA

L

PB

-VID

EO S

IGNA

L

MO

DE: S

P/RE

C

SERI

ALD

ECO

RDER

48 52 54 56 61 63

96 95 93 94

CHAR

A.IN

S.CC

D 1H

DEL

AY

BYPA

SS

MUT

E

PB/E

ETU

NER

TUNE

R

MUT

E

PB/E

ELI

NE

SCAR

T

LIN

ESC

ART

AGC

PR

R Y C

P

RP

RP

Y. D

ELAY

Y/C

MIX

+ 2179

78

AGC

VXO

FBC

1/2

585965

2928

SDA

SCL

6968

4643

67846270

D-R

EC-H

80

TP00

3V-

OUT

WF5

TP00

8C-

PBW

F6

MA

IN C

BA

TP00

2R

F-SW

WF1

X401

4.43

MH

z

17

Q703

JK70

1 V-

INVID

EO O

UT

TU00

1 20

BUFF

ER

BUFF

ERQ4

01

TP01

0G

ND

TO

TV B

LOCK

VID

EO

TU-V

IDEO

TO

TV B

LOCK

C-VI

DEO

JK70

3V-

INV-

OUT

19

WF4

WF2

1-7-3 T6605BLA

Audio Block Diagram

REC

AMP

100

3AU

TOBI

AS21

+5V

+5V

Q854

Q856

BIAS

OSC

Q855

Q853

(PB=

ON)

Q852

(PB=

ON)

Q851

SWIT

CHIN

GD

-REC

-OFF5

EQ AMP

98

7

LIN

EAM

P

REC

-ON

TP00

7

AUD

IO H

D-SW

CONT

ROL

MUT

E11

6

PB-O

N

SW C

TL

SP/L

P-O

N

PR

ALC

DET ALC

IC40

1(A

UDIO

SIG

NAL

PRO

CESS

)

IC70

1(S

W)

13 17

3A-

PB/R

ECCL

402

4A-

COM

6AE

-H5

AE-H

/FE-

H

AUD

IOH

EAD

AUD

IOER

ASE

HEA

D ACE

HEAD

ASS

EMBL

Y

FE H

EAD

1FE

-H2

FE-H

-GND

CL40

3

MA

IN C

BA

PB-A

UDIO

SIG

NAL

REC

-AUD

IO S

IGNA

LM

ode

: SP/

REC

71

A-M

UTE-

H

SCL

SDA

TO SERV

O/S

YSTE

M

CONT

ROL

BLO

CK

TO SE

RVO

/SYS

TEM

CO

NTRO

L BL

OCK

FULL

ERAS

EH

EAD

6869

SERI

ALD

ECO

DER

(D

ECK

ASSE

MBLY

)

12

16

INV

ATT

IC30

1

71

IC15

1 (A

MP)

(VID

EO/AU

DIO

/CHR

OM

A/DE

FLEC

TIO

N/IF

)

SP1

SP-G

ND2

JK15

1H

EAD

PHO

NE J

ACK S

P151

SPEA

KER

CN80

4CL

801

SP2

SP-G

ND1

CN15

1

SP-M

UTE

OUT

PUT

AMP

5052 53 54

MUT

E5

1 215

5 34

1214

6

2 1

AUD

IO O

UT

TU00

1

JK70

2 A-

IN

JK70

3

SCAR

TLI

NE

SCAR

TLI

NE

A-IN

A-O

UT

Q701

1011

9

SCAR

T-H

EXT-

LSC

ART-

MUT

E

TUNE

R

TUNE

R

LIN

E

LIN

E

N-A

-PB

ATT

AUD

IOM

UTE

WF7

WF9

WF8

TO SERV

O/S

YSTE

M

CONT

ROL

BLO

CK

A B

Com

paris

on C

hart

of

Mod

els

& M

arks

Mod

elM

ark

T660

5VF

T670

5VF

A B

1-7-4 T6605BLT

TV Block Diagram

X301

4.43

MHz

CL30

1A

CL30

2A

IC30

1(VI

DEO/

AUDI

O/C

HRO

MA/

DEFL

ECTI

ON/

IF)

IC20

1(S

YSTE

M CO

NTRO

L/O

SD)

V-SY

NC

TEXT

-L

OSD

-RO

SD-G

OSD

-BO

SD-B

LK

H-S

YNC

SLOW

-SW C

-VID

EOC-

VIDE

O

RAP

ID-S

W

OSD

-G

OSD

-R

OSD

-B

59 586062636482

TU-V

IDEO

TO VID

EO B

LOCK

TO CRT/

H.V.

BL

OCK

CL30

1B

TO CRT/

H.V.

BL

OCK

CL

302B

BLUE

2G

REEN

1R

ED

SDA

SCL

TO

SERV

O/S

YSTE

MCO

NTRO

L BL

OCK

TO VID

EO

BLO

CK

REC

VID

EO S

IGNA

LPB

VID

EO S

IGNA

LM

ode

: SP/

REC

WF1

8W

F17

WF1

0

WF1

1

CN30

3(N

O CO

NNEC

TION)

CN30

3 is

used

for

adju

stmen

t at fa

ctor

y

I2 C-O

PEN

3

FBP

2H

-DR

IVE

1AC

L5

V-R

AMP-

FB4

V-D

RIV

E3

MA

IN C

BA

32

2117 1213302820271110

14 311516 6 7

43

36VI

DEO

34

CHRO

MA

TRAP

SERI

ALI/F IN

TELL

IGEN

TM

ONI

TORI

NG

CHRO

MA

BPF

PAL

DEC

ODE

RSE

CAM

DEC

ODE

R

BASE

BAN

D1H

DEL

AY L

INE

SYNC

SEPA

RAT

ION

LUM

ASI

GNA

LPR

OCE

SSCI

RCUI

T

H-S

YNC

PRO

CESS

CIRC

UIT

V-SY

NCPR

OCE

SSCI

RCUI

T

OSD

MIX

/RBG

MAT

RIX

/BL

ANKI

NG

TUNE

R

LIN

E/PB

TUNE

R

LIN

E/PB

CLO

CKCO

NTRO

LCI

RCUI

T

SW C

TL

IC70

3(S

W)

5 34

2 115

12 1314

7168 11 15

56

61 6568

JK70

3

109

11Q7

10

Q702

Q706

Q704

+5V

+5V

Q711

SLOW

-SW

-IN

RG

B-CO

NTR

APID

-SW

-IN

INV

INT.M

ONIT

OR1

I2 C-O

PEN

2SD

A4

SCL

5

1-7-5

CRT/H.V. Block Diagram

T6605BLCRT

PUM

P UP

AMP

THER

MAL

PROT

ECTI

ON

36

7 15

8 10 7 9 6

GRE

EN A

MP

BLUE

AM

P

Q501

Q502

Q503

H.D

RIV

EQ5

33

Q551

T552

V- DR

IVE

H-

DR

IVE

DEF

LECT

ION-

YOKE

BA

IC55

1 (V-

DEF

LECT

ION

CONT

ROL)

T551

F.B.

T.

ANO

DE

FOCU

SSC

REEN

CRT

CBA

R G B HEAT

ER

ANO

DE

GND

V501

CRT

GND

FOCU

SSC

REEN

JK50

1

HEA

TER

11

CN50

1

CL50

1BCL

501A

REC

VID

EO S

IGNA

LPB

VID

EO S

IGNA

L

CN55

1

P-O

N+16

0V3

3

TO TV

BLO

CK

CL30

2A

11SFHV

FOCU

S VR

SCRE

EN V

R

+B

TO

POW

ER S

UPPL

Y BL

OCK

D

EF+B

H.O

UTPU

T

1 5 3 4

5 4 3 1W

F12

WF1

5W

F14

WF1

6

WF1

3

RED

AM

P

Mod

e : S

P/RE

C

CN50

2

2VC

C

3 21

CN30

1CL

301B

TO TV

BLO

CKCL

301A

JUNC

TIO

N-C

CBA

JUNC

TIO

N-B

CBA

CN55

2CN

302

CL30

2B

H.V

./P

OWER

SUP

PLY

CBA

32

RED

14

GRE

EN2

3BL

UE

33

V-D

RIV

E

11

H-D

RIV

E2

2FB

P

55

ACL

44

V-R

AMP-

FB312 5 4

Com

paris

on C

hart

of

Mod

els

& M

arks

Mod

elM

ark

T660

5VF

T670

5VF

A B

1-7-6

Power Supply Block Diagram

T6605BLP

6 4 2 1

14 13 11 10 9 8

LIN

EFI

LTER

BRID

GE

REC

TIFI

ER

T601

IC60

1ER

ROR

VOLT

AGE

DET

W60

1

F601

T4A/

250V

L601

D60

1 - D

604

SWIT

CHIN

G

Q604

VR60

1

DEG

AUSS

ING

COIL

CN60

1

J603

A2J6

04A2

Q602

+B

ADJ.

FEED

BACK

LIM

ITER

Q603

PS60

2

A B

41

32

HOT

COLD

Q608

DG

601

MA

IN C

BA

NOT

E :

The

volta

ge fo

r pa

rts in

hot

circ

uit i

s m

easu

red

usin

gho

t GND

as

a co

mm

on te

rmin

al.

CAUT

ION

!Fi

xed

volta

ge p

owe

r su

pply

circu

it is

used

in th

is un

it.If

Mai

n Fu

se (F

601)

is blo

wn

, ch

eck

to s

ee th

at a

ll co

mpo

nent

s in

the

pow

er

supp

lyci

rcui

t are

not

def

ect

ive b

efo

re y

ou

co

nn

ect

the

AC pl

ug to

the

AC po

we

r su

pply.

Oth

erwi

se it

may

cau

se s

ome

com

pone

nts

in th

e po

we

r su

pply

circu

it to

fail.

TIM

ER+5

V

P-D

OWN

-L(TO

PIN

85 O

F IC

201)

P-O

N-O

NAL+

9V

P-O

N+8V

AL+1

2V(2)

AL+1

2V(1)

AL+5

V

+5.

7VR

EG.

IC30

1

3955

+B DEF

+B

POW

ER

SW60

1SW

602

+5V

REG

.Q6

06Q6

05

+8V

REG

.Q6

07

AL+5

VP-

ON+

8VP-

ON-

LP-

DOW

N-L

125 46

AL+1

2V(1)

3AL

+12V

(2)7

AL+9

V8

AL+3

3V11

125 4637811

TO

CRT/

H.V.

BLO

CK

TP50

3+

B TP

504

GND

CN60

2

12

JUNC

TIO

N-A

CBA

H.V

./P

OWER

SUP

PLY

CBA

CL60

3BCN

603

P-O

N-H

(TO P

IN67

OF

IC20

1)

+5V REG

.

+5V REG

.

+5V REG

.

IC68

1

Q684 Q

686

P-O

N+5V

(1)

P-O

N+5V

(3)

P-O

N+5V

(2)

AL+3

3V

CM+1

2V

CL60

3A

125 4637811

125 4637811

CAUT

ION

FOR

CONT

INUE

D PR

OTE

CTIO

N AG

AINS

T FI

RE H

AZAR

D,R

EPLA

CE O

NLY

WIT

H TH

E SA

ME

TYPE

T4A

/250

V FU

SE.

Q682

Q206

LIN

EFI

LTER

L602

CL60

4TO

PCO

VER

Com

paris

on C

hart

of

Mod

els

& M

arks

Mod

elM

ark

T660

5VF

T670

5VF

A B

B A

1-7-7 T6550MTI

MECHANICAL TROUBLE INDICATOR1, Each Malfunction IndicationIf the MONITOR is turned ON right after the Mechani-cal Malfunction occurs or POWER SAFETY/X-RAY isturned ON, display the following character to showMalfunction after the EJECT display.

Example: If REEL Malfunction

2, Each Malfunction evaluationmethodX-RAY protectIf X-RAY port becomes continuously 2.5V or more for120 msec. (4 times 40 msec. interval), the unit shallimmediately turn OFF the POWER/MONITOR andswitch over to the Mechanical Malfunction mode withPOWER OFF.(To return from this mode shall become possible onlyby POWER Key as in the case of the Mechanical Mal-function).

POWER SAFETY1) POWER SAFETY 1

If P-SAFETY 1 port becomes continuously 2.5V orless for 120 msec. (4 times 40 msec. interval) whenMONITOR is ON, the unit shall be assumed to bethe Power Malfunction 1 and immediately turn OFFthe POWER/MONITOR and switch over theMechanical Malfunction mode with POWER OFF.(To return from this mode shall become possibleonly by POWER Key as in the case of the Mechan-ical Malfunction).* However the POWER SAFETY 1 function shall bedisabled during 500 msec. right after the MONI-TOR turns ON.

2) POWER SAFETY 2If P-SAFETY 2 port becomes continuously 2.5V orless for 120 msec. (4 times 40 msec. interval) whenP-ON-H port is ON, the unit shall be assumed to bethe Power Malfunction 2 and immediately turn OFFthe POWER/MONITOR and switch over theMechanical Malfunction mode with POWER OFF.(To return from this mode shall become possibleonly by POWER Key as in the case of the Mechan-ical Malfunction).* However the POWER SAFETY 2 function shall bedisabled during 500 msec. right after the P-ON-Hport turns ON.

Immediately preceding Malfunction Display character

REEL Malfunction RDRUM Malfunction DCASSETTE LOADING Mal-function C

TAPE LOADING Malfunction TP-SAFETY 1 1P-SAFETY 2 2X-RAY X

EJECT R

1-7-8 T6550MTI

Mechanical Malfunction determination1) REEL Malfunction detection

Countermeasure for REEL and CAPSTAN motorrotation malfunction (Except CASSETTE LOAD-ING function)After the Malfunction detection with REEL/CAP-STAN sensor, the unit shall switch over to STOP(B) and be REEL Mechanical Malfunction.

a) If the T-REEL pulse is not impressed after a lapseof 7 sec. at SP, 14 sec. at LP, or more in the REELRotation Mode like PLAY/REC, FS/RS Mode, andthe T-REEL or S-REEL pulse is not impress after alapse of 4 sec. or more in REEL Rotation Mode ofFF/REW, it shall be assumed to stop the rotationand switch over to STOP (B) position, thenPOWER be turned OFF and the unit be REELMechanical Malfunction. (T-REEL and S-REEL forthe models on S-REEL and only T-REEL for othermodels)

b) If the C-FG pulse is not impressed for a lapse of 1sec. or more during the CAPSTAN MOTOR rota-tion, it shall be MOTOR Rotation Malfunction(REEL Malfunction).

2) DRUM Malfunction detectionDetect the DRUM rotation at the D-FG input termi-nal. If the variation of D-FG input level is not detectedfor a lapse of 1 sec. or more when D-CONT is "H",it shall be assumed to be Rotation Malfunction andbe DRUM Malfunction. When detect Drum Malfunction, POWER shall beturned OFF after the unit switches over to STOP(B) Mode.

3) Countermeasure for TAPE LOADING MalfunctionDetect the Malfunction with the LOADING Switch.

a) TAPE LOADING MalfunctionIf LD-SW does not go to the established positionafter a lapse of 7 sec. or more from TAPE LOAD-ING or TAPE UNLOADING start, the LOADINGfunction shall immediately be stopped and POWERbe turned OFF, and inform the Timer about theLOADING Mechanical Malfunction.

b) LD-SW Position Malfunction at each modeWhen the unit operates at each mode, even if theLD-SW position changes from the established onein its mode, it keeps the function according to itsmode.

4) Countermeasure for CASSETTE LOADING Mal-function

a) CASSETTE IN operating MalfunctionIf LD-SW does not go to SB position after a lapseof 5 sec. or more from the CASSETTE insertionstart, the unit starts the CASSETTE OUT opera-tion. After switch over to CASSETTE OUT operation andthen a laps of 5 sec. or more from the CASSETTEOUT operation start, if LD-SW does not go to theEJ position or if START Sensor and END Sensordoes not turn "ON" at the EJ position, the unitstarts again to insert CASSETTE.(However in S-INH state, the START/END Sensorshall be disabled).

b) CASSETTE OUT operating MalfunctionAfter a lapse of 5 sec. or more from CASSETTEOUT operation start, if LD-SW does not go to theEJ position or if START Sensor and END Sensordoes not turn "ON" at the EJ position, the unitstarts to insert CASSETTE.(However in S-INH state, the START/END Sensorshall be disabled).

When the unit switches over to CASSETTE inser-tion at CASSETTE IN or CASSETTE OUT Mal-function, if LD-SW does not go to the SB positionafter a lapse of 5 sec. or more from CASSETTEinsertion start, the function shall immediately bestopped and POWER be turned OFF, and the unitbe CASSETTE LOADING Malfunction.

c) When POWER is turned ON, if the CL position orGC position cannot be detected after 5 sec. LD-REV operation and 5 sec. LD-FWD operation, thefunction shall immediately be stopped and POWERbe turned OFF, and the unit be CASSETTE LOAD-ING Malfunction.

d) When POWER is turned ON without CASSETTE(EJ position) and LD-SW is monitored all the time,if the CL or GC position is detected continuously for1 sec. or more, the POWER shall be turned OFFand the unit be CASSETTE LOADING Malfunction.

Countermeasure for MechanicalMalfunctionIf the unit detects Mechanical Malfunction, turn thePOWER OFF. If the unit is Mechanical Malfunction,Key input except POWER key shall be disabled andCASSETTE insertion disabled. When POWER Key isentered, the POWER is turned ON and the unitswitches over the EJECT Mode. (Return with POWERON)

1-8-1 SC_1

(Top View) (Bottom View)

(Bottom View)

Electrolytic Capacitor+

Transistor or Digital Transistor

NPN Transistor PNP Transistor

NPN Digital Transistor PNP DigitalTransistor

(Top View)

(Top View)E C B

E C B

Digital Transistor

CBA Symbols

Schematic Diagram Symbols

E C B

(Top View)

(Top View)E C B

E C B

SCHEMATIC DIAGRAMS / CBAS AND TEST POINTSStandard NotesWarningMany electrical and mechanical parts in this chassishave special characteristics. These characteristicsoften pass unnoticed and the protection afforded bythem cannot necessarily be obtained by using replace-ment components rated for higher voltage, wattage,etc. Replacement parts that have these special safetycharacteristics are identified in this manual and itssupplements; electrical components having such fea-tures are identified by the mark " ! " in the schematicdiagram and the parts list. Before replacing any ofthese components, read the parts list in this manualcarefully. The use of substitute replacement parts thatdo not have the same safety characteristics as speci-fied in the parts list may create shock, fire, or otherhazards.

Capacitor Temperature Markings

Capacitors and transistors are represented by the fol-lowing symbols.

Note:1. Do not use the part number shown on these draw-

ings for ordering. The correct part number is shownin the parts list, and may be slightly different oramended since these drawings were prepared.

2. All resistance values are indicated in ohms (K=103,M=106).

3. Resistor wattages are 1/4W or 1/6W unless other-wise specified.

4. All capacitance values are indicated in F (P=10-6F).

5. All voltages are DC voltages unless otherwisespecified.

Mark Capacity change rateStandard

temperatureTemperature

range(B) 10% 20C -25~+85C(F) +30 -80% 20C -25~+85C

(SR) 15% 20C -25~+85C(Z) +30 -80% 20C -10~+70C

1-8-2 SC_2

LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ONTHE FOLLOWING PAGES:

1. CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE.

2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not defectivebefore you connect the AC plug to the AC power supply. Otherwise it may cause some components in thepower supply circuit to fail.

3. Note:(1) Do not use the part number shown on the drawings for ordering. The correct part number is shown in the parts

list, and may be slightly different or amended since the drawings were prepared.(2) To maintain original function and reliability of repaired units, use only original replacement parts which are listed

with their part numbers in the parts list section of the service manual.

4. Wire Connectors(1) Prefix symbol "CN" means "connector" (can disconnect and reconnect).(2) Prefix symbol "CL" means "wire-solder holes of the PCB" (wire is soldered directly).

5. Mode: SP/REC

6. Voltage indications for PLAY and REC modes on the schematics are as shown below:

7. How to read converged lines

8. Test Point Information

2 31 5.0(2.5)

PLAY mode REC mode5.0

The same voltage forboth PLAY & REC modes Indicates that the voltageis not consistent here.

Unit: Volts

3

2

1

A B C D

1-B1

1-D3

AREA D3AREA B1

1-D3Distinction AreaLine Number(1 to 3 digits)Examples:

1. "1-D3" means that line number "1" goes to area "D3".2. "1-B1" means that line number "1" goes to area "B1".

: Indicates a test point with a jumper wire across a hole in the PCB.: Used to indicate a test point with a component lead on foil side.: Used to indicate a test point with no test pin.: Used to indicate a test point with a test pin.

Main 1/5 Schematic Diagram

1-8-3 1-8-4 T6605SCM1


1-8-5 1-8-6 T6605SCM2


1-8-7 1-8-8 T6605SCM3

Comparison Chart of Models and Marks

MODEL MARKT6605VF AT6705VF B


1-8-9 1-8-10 T6605SCM4



1-8-11 1-8-12 T6605SCM5

Main 5/5 Schematic DiagramComparison Chart of Models and Marks


1-8-13 1-8-14 T6605SCP1

H.V./Power Supply 1/2 Schematic Diagram

NOTE :The voltage for parts in hot circuit is measuredusing hot GND as a common terminal.

CAUTION !Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.If Main Fuse (F601) is blown, check to see that all components in the power supplycircuit are not defective before you connect the AC plug to the AC power supply.Otherwise it may cause some components in the power supply circuit to fail.

CAUTIONFOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE ONLY WITH THE SAME TYPE FUSE.

VOLTAGE CHART (Power off mode)Ref. No.IC601

Ref. No.Q602

Ref. No.Q603Q604Q605Q606Q607Q608

13.1 12.1 0.2 1.61 2 3 4

1.20

5.50.1 0.7

12.010.39.7

9.66.5

7.36.710.35.91.2

E C B0 0.21.8

S D G1.80 304.0



1-8-15 1-8-16

H.V./Power Supply 2/2 Schematic Diagram

T6605SCP2



1-8-17 1-8-18 T6605SCCRT

CRT Schematic DiagramComparison Chart of Models and Marks


TO SENSOR CBA(END-SENSOR)

TO SENSOR CBA(START-SENSOR)

CTLTP001

RF-SWTP002

WF3

WF1

N-A-PBTP007WF8

J361G4(SECAM Black LevelAdjustment)

C-PBTP008WF6

V-OUTTP003WF5

J349F3(C-Trap Adjustment)

1-8-19 1-8-20 BT6600F01012

Main CBA Top View

BHF300F01011-A

BHF300F01011-B

Sensor CBA Top View

PIN 52OF IC301

WF7

PIN 13OF IC301

WF10

PIN 8OF IC401

WF9

PIN 58OF IC201

WF17

PIN 29OF IC401

PIN 59OF IC201

WF18

PIN 7OF IC301

WF11

WF2PIN 48OF IC401

WF4

Main CBA Bottom View

1-8-21 1-8-22 BT6600F01012

(H Adjustment)R590

+BTP503

GNDTP504

+B ADJVR601

H.V./Power Supply CBA Top ViewBECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWERSUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUTSLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLYCIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.




1-8-23 1-8-24 BT6600F01022-A

WF13PIN 5OF CN551

WF12Q551Collector

H.V./Power Supply CBA Bottom ViewBECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWERSUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUTSLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLYCIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.




1-8-25 1-8-26 BT6600F01022-A

WF14Q501Collector

WF15Q502Collector

WF16Q503Collector

BT6600F01022-B

CRT CBA Top View CRT CBA Bottom View

1-8-27 1-8-28

Junction-A CBA Top View

BT6600F01012

Junction-A CBA Bottom View

Junction-B CBA Top View Junction-B CBA Bottom View

Junction-C CBA Top View Junction-C CBA Bottom View

1-8-29 1-8-30

1-9-1

WAVEFORMS

Z13PWF

WA

VEFO

RM N

OTE

SIN

PUT:

CO

LOR

BAR

SIG

NAL

OTH

ER C

ONT

ROLS

: CEN

TER

POSI

TIO

NVO

LTAG

ES S

HOW

N AR

E RA

NGE

OF

OSC

ILLO

SCO

PE S

ETTI

NG

WF1

1DIV

: 2V

5

ms

TP00

2 RF

-SW

WF2

1DIV

: 0.2

V 0

.1s

IC40

1 PI

N 29

WF3

1DIV

: 1V

1

0ms

TP00

1 C

TL

WF4

1DIV

: 0.2

5V

20s

IC40

1 PI

N 48

WF5

1DIV

: 0.5

V

20s

TP00

3 V

-OUT

Uppe

r: W

F6 L

ower

: WF1

1DIV

: 0.2

V 2

DIV:

5V

5m

sTP

008

C-P

B

WF7

1DIV

: 0.2

V 0

.5m

sIC

301

PIN

52

WF8

1DIV

: 0.5

V 0

.5m

sTP

007

N-A-

PB

WF9

1DIV

: 0.5

V 0

.5m

sIC

401

PIN

8

WF1

01D

IV: 2

V

5m

sIC

301

PIN

13

WF1

11D

IV: 1

V

20

sIC

301

PIN7

WF1

21D

IV: 2

00V

20

sQ5

51 C

OLLE

CTOR

WF1

31D

IV: 1

0V

5m

sCN

551

PIN

5

WF1

41D

IV: 2

0V

20

sQ5

01 C

OLLE

CTOR

WF1

51D

IV: 2

0V

20

sQ5

02 C

OLLE

CTOR

WF1

61D

IV: 2

0V

20

sQ5

03 C

OLLE

CTOR

WF1

71D

IV: 1

V

20

sIC

201

PIN

58

WF1

81D

IV: 1

V

5m

sIC

201

PIN

59

T6605WI1-10-1

WIRING DIAGRAM

FULL

ERA

SE H

EAD

WIR

ING

DIA

GR

AM

FO

R SE

CTIO

N 2

(DEC

K ME

CHAN

ISM)

CRT

CBA

BT6

600F

0102

2-B

FOCU

SSC

REEN

GND

D.

durabrand t6605vf_t6705vf manual de servicio.pdf

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