- 1-1 -

[CONTENTS]

❍ SECTION 1. GENERAL• SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

• IDENTIFICATION OF CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

❍ SECTION 2. ELECTRICAL • ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

• TROUBLESHOOTING GUDIE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

• IC VOLTAGE SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

• SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

• WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

❍ SECTION 3. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

❍ SECTION 4. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

- 1-3 -

❏ IDENTIFICATION OF CONTROLS

FRONT/REAR PANEL

14

15

16 17

18

19

2 1110

3

13 1281

4 6

5

79

1. POWER (STANDBY/ON) button

2. CD SYNC. button

3. FUNCTION SELECT buttons (CD/TAPE)LEFT/RIGHT SPEAKER

4. • TAPE MODE button :• COUNTER RESET button :• TIMER button• CLOCK button• COUNTER button :

5. XDSS button

6. CD DOOR

7. REMOTE SENSOR

8. DISPLAY WINDOW

9. CD OPEN/CLOSE ( OPEN/CLOSE) button

10. • PROG./MEMORY button• FUNCTION SELECT button (TUNER/BAND)

11. VOLUME ( ) button

12. TAPE DOOR ( PUSH EJECT)

13. • RECORD/RECORD PAUSE ( ) button• CD SKIP/SEARCH ( ) button• TAPE REWIND/FAST FORWARD ( )

button• PRESET (-/+) button• TAPE REVERSE PLAY ( ) button• TAPE PLAY ( )/CD PLAY ( ) button• STOP ( )/CLEAR button

14. FM ANTENNA

15. MICROPHONE : OPTIONAL

16. BATTERY COMPARTMENT

17. HEADPHONE SOCKET ( PHONES) - ø 3.5mm : OPTIONAL

18. AC POWER INPUT SOCKET

19. VOLTAGE SELECTOR : OPTIONAL

- 1-4 -

Remote Control

POWER XDSS

TUNER/BAND EQ PATT.

VOLUMEPRESET

REPEAT

SLEEP

PROGRAM

SURR. MUTE

1 2

543 6

987 0

OPTIONAL

1

2345

6

14

131211

10

9

8

7

1. XDSS button2. POWER button3. TUNER/BAND button4. This button is not available.5. PRESET ( ) button6. CD FUNCTION buttons

• PLAY/PAUSE ( ) button• CD STOP ( ) button• CD SKIP/SEARCH ( ) button• REPEAT button

7. NUMBER buttons8. TAPE FUNCTION buttons

• RECORD/RECORD PAUSE button ( )• BACKWARD PLAY button ( ) : OPTIONAL• FORWARD PLAY ( ) button• TAPE STOP button ( )• FAST FORWARD ( ) button• REWIND ( ) button

9. SLEEP button10. PROGRAM button11. VOLUME ( ) button12. EQUALIZER PATTERN (EQ PATT.) button13. MUTE button14. SURROUND (SURR.) button

1. RECORD/RECORD PAUSE indicator2. MP3 indicator3. SLEEP indicator4. TIMER indicator5. PROGRAM indicator6. MEMORY indicator7. STEREO indicator8. BACKWARD PLAY indicator9. TAPE MODE indicator10. FORWARD indicator11. CD SYNCHRO RECORDING indicator12. CD PLAY/PAUSE indicator13. XDSS indicator14. Equalizer indicator15. Surround indicator16. CD REPEAT indicator17. • VOLUME indicator

• SOUND LEVEL METER

Display Window

REC

REPEAT

FLATXDSS SURR

CLASSIC POPROCK

1 ALL

SYNC SLEEP PROG STEREOMP3 TIMER MEMORY

1 2 3 4 5 6 7 8 9 10

11

121314

1516 17

- 2-1 -

SECTION 2. ELECTRICAL

❏ ADJUSTMENTS

1. TAPE DECK ADJUSTMENT

DECK MODE TEST TAPE TEST POINT ADJUSTMENT ADJUST FORBLAY BACK MTT-114 L/R Output Azimuth adjusting screw L/R Maximum

2. RECORD BIAS ADJUSTMENT

DECK MODE TEST TAPE TEST POINT ADJUSTMENT ADJUST FORREC MODE MTT-5511 C241 L201 AUTO-RVS 85kHz±5kHz

AUTO-STOP

- 2-2 -

❏ TROUBLESHOOTING GUIDE

1. CD

- 2-3 -

• OPEN COLOSE NG

CONNECTOR LOCKING CHECK (PN508,PN507)

DEFECTIVE MAINPOWER SUPPLY

DEFECTIVE MICOM

DEFECTIVE IC503

DEFECTIVE MICOMMECHANISM

CHECK POWER SUPPLY CIRCUIT (PN508,PN507)PN508 PIN 8 = 6.2V,PIN 7 = 5V,PN507 PIN 1 = 5V

CHECK VOLTAGE CHANGE LO+, LO- OF IC503(PN507, PIN OPEN:1 2, CLOSE:1 3)

CHECK VOLTAGE CHANGE OF OPEN CLOSE,AND BTLMUTE VOLTAGE(=5V)

(PN507 PIN 1 2:OPEN, 1 3:CLOSE, 1 4:BTLMUTE)

YES

YES

YES

NO

NO

NO

NO

- 2-4 -

• “READING” DISPLAY CHECK (=ONLY “CD” DISPLAY)

- 2-5 -

• READING OK CHECK (= “ NO DISC ” DISPLAY)

CONNECTOR LOCKINGCHECK(PN50 1 ,PN503)

DOES SLED MOVE?

DOSE LENSE MOVE?(UP&DOWN)

DOSE LASER LIGHT?

DOES SPINDLE ROTATE?

IS READING OK?

CHECK PN50 1 PIN 1 4,1 5(TA+,TA-)

CHECK PN503 PIN5.6(SP+,SP-)

CHECK PN50 1 PIN 1 0(LD)

CHECK PN50 1 PIN 1 5.1 6(FA-,FA+)

CHECK PN503 PIN3.4(SL+,SL-)

DEFECTIVE PICKUP ORIC503 OR IC501 OR IC502

DEFECTIVE PICKUP ORIC503 OR IC501

DEFECTIVE PICKUP ORIC502

DEFECTIVE PICKUP ORIC503

DEFECTIVE PICKUP ORIC503 OR IC501 OR IC502

A

B

C

D

E

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

- 2-6 -

• READING OK CHECK #A(=“NO DISC” DISPLAY)

DOSE SL+ WAVEFORMAPPEAR AT(IC503 PIN 1 4 AND

PN503 PIN3)WAVEFORM #2SLED MOTOR WAVE

DOSE SLIN WAVEFORMAPPEAR AT (IC503 PIN5)

WAVEFORM #2 SLEDDRIVE WAVE

CHECK PN503 CONNECTOR LINE

DEFECTIVE IC50

DEFECTIVE IC503

DEFECTIVE PN503CONNECTOR

DEFECTIVE PICUPSLED MOTOR

A

YES

NO

NO

NO

NO

NO

- 2-7 -

• READING OK CHECK #B(=“NO DISC” DISPLAY)

DOSE FA+ WAVEFORMAPPEAR AT(IC503 PIN 1 5 ANDPN50 1 PIN 1 6)WAVEFORM #3

FOCUS COIL DRIVE WAVEDOSE FAIN WAVEFORM

APPEAR AT (IC503 PIN26)WAVEFORM #3 FOCUS

DRIVE WAVE

CHECK PN50 1 CONNECTOR LINE

DEFECTIVE IC50 1

DEFECTIVE IC503

DEFECTIVE PN501CONNECTOR

DEFECTIVE PICUPFOCUS ACTUATOR

B

YES

NO

NO

NO

NO

NO

- 2-8 -

• READING OK CHECK #C(=“NO DISC” DISPLAY)

IC ?V APPLIED TO PIN 10 OF PN501LASER SUPPLY VOLTAGE CHECK

IS 3.3V APPLIED TOPIN3 OF IC502

RF IC SUPPLY VOLTAGECHECK

CHECK PN501 CONNECTOR LINE

DEFECTIVE IC501

IS 2.0V PIC2 OF IC502LASER CONTROLVOLTAGE CHECK

DEFECTIVE IC501

DEFECTIVE IC503

DEFECTIVE PICUPFOCUS ACTUATOR

DEFECTIVE PN501CONNECTOR

C

YES

YES

NO

NO

NO

NO

NO

NO

- 2-9 -

• READING OK CHECK #D(=“NO DISC” DISPLAY)

DEFECTIVE IC50 1

DEFECTIVE IC503

DEFECTIVE PN503CONNECTOR

DEFECTIVE PICUPSPINDLE MOTOOR

CHECK PN503 CONNECTOR LINE

D

NO

NO

NO

NO

DOSE SP+ WAVEFORMAPPEAR AT(IC503 PIN 1 2 AND

PN503 PIN6)WAVEFORM #4SPINDLE MOTOR DRIVE WAVE

DOSE SPIN WAVEFORMAPPEAR AT (IC503 PIN6)

WAVEFORM #4SPINDLE DRIVE WAVE

YES YES

- 2-10 -

• READING OK CHECK #E(=“NO DISC” DISPLAY)

E

DOSE TA+ WAVEFORMAPPEAR AT(IC503 PIN 17 ANDPN503 PIN 15)WAVEFORM #5TRACKING COIL DRIVE WAVE

DOSE TAIN WAVEFORMAPPEAR AT (IC503 PIN23)

WAVEFORM #5TRACKING DRIVE WAVE

DEFECTIVE IC503

DEFECTIVE IC501

DEFECTIVE IC503

DEFECTIVE PN503CONNECTOR

DEFECTIVE PICKUP ORIC502

DEFECTIVE PN503CONNECTOR

DEFECTIVE PICUPSPINDLE MOTOOR

DOSE ARF SIGNAL APPEAR?(IC502 PORT8)WAVEFORM#6

DOSE FE, TE SIGNAL APPEAR?(IC502 PORT FE:23,RE:21)

WAVEFORM#6

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

- 2-11 -

2. MAIN POWER

Main Power input (AC-cord in)

LCD Display ”Hello” Check the Voltage-selector 110V/230V(Duble Voltage only)

Check the DC out of C813(+) Check the Fuse Replace the Fuse

Replace the ZD805

Replace the Q810

Check the ZD805 of +10V

Replace the IC801

Check the D602, D604, D605

Check the ZD803, Q807

Check the Q601

Replace the X601, X602

Check the Q810 ”E ”DC Power-output

Check theD901,D902,D903,D904

Check the DC power output of IC801pin3 +5.2V

Check the power-output IC601pin17,54,90?

Check the DC +5.2V output of Q808 ”C”

Check the Reset of IC601 pin11, Q601 ”C”

Check the Oscillation of X601,X602

Replace the IC601

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

- 2-12 -

3. MUTING CIRCUIT(MUTE)

4. FUNCTION MODE AUDIO ABNORMAL

Dose “ HIGH ” appear atQ305, Q306 “ B ”

Check the “LOW ” of Q305, Q306 “E ”

MUTE

TAPE

CD

TUNER

Check the signal input of IC301 pin6,23

Check the signal input of IC301 pin3,26

Check the signal input of IC301 pin4,25

Refer to “Tuner Pack Trouble Shooting ”

Check the signal input of PN302 “R-CH ”“L-CH”

Refer to “TAPE Trouble Shooting ”

Check the “HIGH” of theIC601 pin9

Check the pattern

Replace the Q305, Q306

Check the IC601NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

- 2-13 -

5. IC301 TROUBLESHOOTING

Check the IC601 Function Selector

Check the Pattern

Replace the IC301

Replace the ZD 302

Replace the Q301

Check the IC601

END

Check the Power supplying to IC301 pin 1

Check the +8.2V DC output ZD302

Check the +7.5V DCOutput Q301 “E ”

Check the DC Output of Q814, ZD806

Check the Data ofIC601 pin 3,4

(CD � TAPE Function)

Check the CLK Data of IC301 pin 14,15

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

- 2-14 -

6. TUNER PACK TROUBLESHOOTING6. TUNER PACK TROUBLESHOOTING

Check the Tuner Power of PN101 “Tu- B+”

Check the DC output ofQ818 “C”

Check the “high”Q819 “B ”

Check the DC output Q802 “E ”

Replace Tuner pack

CE : Chip EmableDI : Data Input(From u-com)DO : Data Output(to u-com)CLK : Tuner Mode Clock

Check the PN101 of CE, DI, DO, CLK (PLL)

Is the normal?

END

YESYES

YES

YES

NO

NO

NO

- 2-15 -

7. TAPE TROUBLESHOOTING

Check the power supplying to IC201 pin18

Check the signal output ofIC201 pin5,20

Check the “LOW ” of Q210, 211 “B ”

Check the DC output Q815 “C”

Check the “high”IC601 pin92

Replace the Deck Mecha

Check the pattern

Check the Deck Mecha

Replace the IC201

YES

YES

YES

YES

NO NO

NONO

• Play

- 2-16 -

• REC

Check signal supplied to IC201 pin 11, 14

Check the “LOW ” of Q208, 209 ”B”

Check the “LOW ” ofIC601 pin32

Check the Oscillation of L201 pin1, 3

Replace the deck

Check the power supplying to C245(+)

Check the “LOW ”Q813 “C”

Check the IC601pin88

Check the DC outputof Q811 “C”

Check the Oscillation ofQ202 “E ”

Check the signal of R239, R240

Check the pattern

Check the 0.6V of Q203 “B ”

Replace the L201

Replace Q208, 209YES

YES

YES

YES

YES

YES

YES

NO NO

NO

NO

NO

NO

NO

- 2-17 -

❏ VOLTAGE SHEET

- 2-18 -

❏ BLOCK DIAGRAM

2-19 2-20

2-21 2-22

❏ SCHEMATIC DIAGRAMS

1. MAIN SCHEMATIC DIAGRAM (POWER/EQ/AMP)

2-23 2-24

2. FRONT/MICOM SCHEMATIC DIAGRAM

2-25 2-26

3. DECK SCHEMATIC DIAGRAM

2-27 2-28

4. CDP SCHEMATIC DIAGRAM

2-29 2-30

❏ PRINTED CIRCUIT DIAGRAM

1. MAIN P.C. DIAGRAM (COMPONENT SIDE)

2-31 2-32

1. MAIN P.C. DIAGRAM (SOLDER SIDE)

2-33 2-34

2. CD P.C. DIAGRAM (COMPONENT SIDE) 2. CD P.C. DIAGRAM (SOLDER SIDE)

2-35 2-36

3. KEY P.C. DIAGRAM 4. BATTERY/POWER P.C. DIAGRAM

2-37 2-38

❏ WIRING DIAGRAM

3-1 3-2

SECTION 3. EXPLODED VIEWS

A00

293

290

A46

351

285

A26

450

A41

453

280

452

452

452

281

282286

291

292

252

260

450

274

453

261

264 450

265

A42

451451

275

270

272

273

271

260

453

250

261

259

259

258

257

254

253

256

251

255256A

NOTE) Refer to “SECTION 4 REPLACEMENTPARTS LIST” in order to look for the part number of each part.

3-3 3-4

MEMO MEMO