lcd power point things know

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Instructor: Alvie Rodgers C.E.T. HITACHI Things You Should Know” Known Fixes LCD Projection Television Training Model Chassis Number Number 50V500 LC-37 50V500A LC-37E 60V500A LC-37F 50VX500 LC-37E 60VX500 LC-37B

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Page 1: LCD Power Point Things Know

Instructor: Alvie Rodgers C.E.T.

HITACHI

Things You Should Know”Known Fixes

LCD Projection Television Training

Model ChassisNumber Number

50V500 LC-37 50V500A LC-37E 60V500A LC-37F 50VX500 LC-37E 60VX500 LC-37B

Page 2: LCD Power Point Things Know

Shadows in the Corners of the Picture 1This picture shows the symptom when the foam surrounding the Lens slips out of place and blocks some of the light path.

Page 3: LCD Power Point Things Know

Shadows in the Corners of the Picture 2This picture shows the Foam surrounding the Lens assembly.

Page 4: LCD Power Point Things Know

Shadows in the Corners of the Picture 3This picture shows the Foam surrounding the Lens assembly.

Application of Nitto Tape

The application for this procedure is for model 50V500 from serial number V3G000031 to V3I006470.

This picture below shows the foam surrounding the Lens has slipped out of place and blocks some of the light path.

Page 5: LCD Power Point Things Know

Ghost in the Picture (1)GHOST: May be described as "Out of Convergence" but Ghost will not be separate from main image.

•This problem may be described as:1)   Red or Blue edging2)   Red or Blue shadow to the Right Hand Side or to the Left Hand Side but still attached to image.3)   Red or Blue convergence out but still attached to image.4)   Or, it could be ANY color ghost or shadow to EITHER side of the image. 

Page 6: LCD Power Point Things Know

Ghost in the Picture (2)All of these symptoms MIGHT be corrected by adjusting the GHOST except those shown in Image below. The Ghost adjustment is under the LCD Adjustment section on the I2C menu.

One good way to CONFIRM if the problem is in fact the Ghost adjustment that will be correctable by the I2C adjustment, please display a 4x3 screen format.  If the problem is in fact a ghost adjustment issue, pay attention to both side lines (the line from the picture to the gray bars on each side). If the problem is Ghost, the edge between the picture and the gray bars on either side will also have the ghost.

NOTE:

There are two different types of Ghost Adjustments dependant upon which model is being serviced.

•50V500

•All Others

Page 7: LCD Power Point Things Know

Ghost in the Picture 50V500 (1)CORRECTION:

To correct the problem, please do as follows:

2. Access I2C Menu. (See page 57 of the Service Manual).

3. To enter the I2C Service Menu, with power off, (on the front control panel) press and hold the INPUT button. Then press the POWER button for two seconds. The following Service Menu will appear.

• BEFORE CONTINUING: CONFIRM THAT THE R, G and B DRIVE ARE SET AT 40.

• Be sure to press SELECT after each change to SAVE the new Data.

Page 8: LCD Power Point Things Know

Ghost in the Picture 50V500 (2)4. Using the Remote Control joy stick, scroll down

to next page (see Figure 2) until LCD ADJUST is highlighted.

5. Move the joy stick to the right to cursor right once. The next page will appear with the word GHOST highlighted.

6. Cursor right again, and a white screen will appear with a BLACK SQUARE in the center, as in Figure 3. You will see LCD ADJUST, followed by “SHP” and a number (value).

Page 9: LCD Power Point Things Know

Ghost in the Picture 50V500 (3)• If the unit is out of adjustment, you will see a gray ghost on either side of

the black square. Move the joystick to the right or to the left until the ghost disappears. The number values will change up or down. 

• If the ghost adjustment is off with a lower value, there will be a ghost to the left of the square. 

• If the ghost adjustment is off with a higher value, there will be a ghost to the right of the square. 

8. Once you get the square to look good without ghosts, press "SELECT" to save any data values that have been changed.

9. Press the "EXIT" button three times to return to normal picture. 

10. Adjustment is completed

Page 10: LCD Power Point Things Know

Ghost in the Picture Not 50V500 (1)CORRECTION:

To correct the problem, please do as follows:

1. Access I2C Menu. (See page 57 of the PA-0178 Service Manual).

2. To enter the I2C Service Menu, with power off, (on the front control panel) press and hold the INPUT button. Then press the POWER button for two seconds. The following Service Menu will appear.

Page 11: LCD Power Point Things Know

Ghost in the Picture Not 50V500 (2)3. Using the Remote Control joy stick, scroll down to next page.

4. Using the Remote Control joy stick, scroll down until LCD ADJUST is highlighted.

5. Move the joy stick to the right once " cursor right“ . 

Page 12: LCD Power Point Things Know

Ghost in the Picture Not 50V500 (3)6.  The LCD ADJUST GHOST adjustment menu screen will appear. 

7. Highlight GHOST and “Cursor Right” . 

Page 13: LCD Power Point Things Know

Ghost in the Picture Not 50V500 (4)8. The GHOST-R screen will appear. 

9. Move the joy stick to the right once “Cursor Right“. 

Page 14: LCD Power Point Things Know

Ghost in the Picture Not 50V500 (5)9. The Red Ghost adjustment screen will appear.

Page 15: LCD Power Point Things Know

Ghost in the Picture Not 50V500 (6)10. If the unit is out of adjustment, you will see a ghost on either side of the black square.

Move the joystick to the right or to the left until the ghost disappears. 

• If the ghost adjustment is off with a lower value, cursor left will correct the right side of the square. 

• If the ghost adjustment is off with a higher value, cursor right will correct the left side of the square. 

• Once you get the square to look good without ghosts, press "SELECT" to save any data values that have been changed.

• This will bring up the GREEN Ghost adjustment. Perform the same adjustment as in step 8.

• Once you get the square to look good without ghosts, press "SELECT" to save any data values that have been changed.

• This will bring up the BLUE Ghost adjustment. Perform the same adjustment as in step 8.

• Once you get the square to look good without ghosts, press "SELECT" to save any data values that have been changed.

• Press the "EXIT" button three times to return to normal picture. 

• Adjustment is completed

Page 16: LCD Power Point Things Know

Pink Picture Not 50V500All Models except 50V500Pink Picture or Not Enough Green or Green Missing:

•See separate Fix for the 50V500 only.

•Even with Color turned all the way down, the picture remains pink. 

•FIRST:

•Alternative Check before replacing Engine.  (See Next Page)

•SECOND:

•If the above checks have had no effect on the symptom, this indicates an Engine Failure. Please replace the Engine Assembly. 

ENGINE PART NUMBERS

•50V500A = UX22202

•50VX500 = UX22202

•60V500A = UX22203

•60VX500 = UX22203

Page 17: LCD Power Point Things Know

Pink Picture Alternative (Not 50V500) 1PINK PICTURE (MISSING GREEN) Also maybe Red Fringe, or many different symptoms related to inappropriate picture.

This picture shows the symptom when the foam surrounding the Lens after the Top has been removed. The Back bottom piece has been removed also. The Plastic protection around Lens has been removed. You can see the metal cans in back of the Lens which set on top of the Engine assembly. This is the Flex Converter (Top Can) and the Drive PWB (Bottom Can). Be careful with the ribbon cable shown on the right, as this can be damaged.

Page 18: LCD Power Point Things Know

Pink Picture Alternative (Not 50V500) 2With Care, the Flex converter can be removed. The top cover on the Drive PWB can now be removed exposing the Ribbon connectors from the Drive PWB to the R, G & B LCD modules. Carefully examine the connections. Sometimes during transportation these can get unseated or cocked causing incorrect connections. Reseat these connections. This may save the replacement of the complete engine assembly. The Ribbon clips or locks slide out slightly to release the ribbon cable. After reseating the ribbon cables, carefully reinstall all shields and the Flex Converter with it's plugs and ribbon cable carefully after completion. Reinstall back and Cabinet Top.

Page 19: LCD Power Point Things Know

Pink Picture Alternative (Not 50V500) 3Reseat these connections.

Be sure to check all three ribbon connections and cables.

Page 20: LCD Power Point Things Know

Pink Picture Not 50V500All Models except 50V500Pink Picture or Not Enough Green or Green Missing:

•SECOND:

•If the above checks have had no effect on the symptom, this indicates an Engine Failure. Please replace the Engine Assembly. 

ENGINE PART NUMBERS

•50V500A = UX22202

•50VX500 = UX22202

•60V500A = UX22203

•60VX500 = UX22203

Page 21: LCD Power Point Things Know

Pink Picture (50V500 Only) 1

Before you attempt any repairs, it is necessary to make a test. The results of this test will determine which part may need replacing. Please follow the directions.

In short, you will be doing the following:1. Perform Memory Initialization. NOTE: You must write down some data values

before performing initialize. 2. Check this status of the picture. (See Status after Initialization Item 4 on Next

Page) 3. The status will determine what part need replacement. (See STEP 3 on Next

Page)

FOLLOW THE ORDER BELOW:

(STEP 01) BE SURE TO COPY DOWN DATA SETTINGS BEFORE INITIALIZING I2C SETTINGS: Select a non-used or blank Video input or tuner to get into I2C menu, also make sure the Power LED on the Front of the set is not blinking at all.

1) Red picture 2) Too much red 3)   Pink picture 4) Reddish picture. 2) 5) Red overloaded picture 6) Bright Red picture. 7) Any white balance issue.

8) Not enough green 9) Weak green 10) Etc.....

Page 22: LCD Power Point Things Know

Pink Picture (50V500 Only) 2

(STEP 04) CONDITION AFTER INITIALIZATION:Select a non-used or blank Video input.If after memory Initialization the set displays a condition with a reddish oval in the center

of the screen, replace the Engine Assembly p/n UX22201.

Page 23: LCD Power Point Things Know

Engine Packing InstructionsThe Engine MUST be returned.  When Replacing a defective engine, you must return the defective engine.

ENGINE PACKING INSTRUCTIONS: Engine must be returned.

•Please use original packaging when replacing engine. When the new engine arrives, SAVE ALL PACKAGING MATERIALS.

•Please place the defective engine in the Anti-Static plastic bag before placing in the shipping carton.

•Please use all shipping materials inside of packing box as they were when engine received.

•Do not ship engine back disassembled. Ship back exactly as the new engine is received.

•You must place information inside package. Model number, Serial Number and Why the engine was replaced. Be detailed and specific.  

•ENGINE PART NUMBERS:

•50V500    = UX22201 50V500A = UX22202 50VX500 = UX22202

•60V500A = UX22203 60VX500 = UX22203

Page 24: LCD Power Point Things Know

Engine Component Identification

Page 25: LCD Power Point Things Know

Saving Changed Data in Service Mode

Saving Changed Data in Service Mode:

• Just for information purposes, after an adjustment is made it is necessary to Save the new data. The Service Manual does state the process, but doesn't make clear that this process is saving the data. 

• To save the Data after each and every change, press the "SELECT" button on the remote control.

Page 26: LCD Power Point Things Know

Front LEDs Blinking Lamp Won’t Light1. Lamp Broken: Examine the Lame, replace if broken.

2. Lamp OK, but still won’t light.

INDICATOR INDICATION MEANING ACTION

LIGHT ONNO LAMP LIGHT OR LAMP

BROKEN

LIGHT BLINKINGWRONG LAMP LIGHT

ASSEMBLY OR LAMP DOOR OPEN.

LIGHT ONTOO HOT INSIDE THE OPTIC

ASSEMBLY.BLINKING COOLING FAN STOPPED.LIGHT ON NORMAL OPERATION.

SLOWLY BLINKING UNIT COOLING DOWN.

Front Control

PWB

The PWB contains the function switches. Power, Channel Up/Down, Volume Up/Down, Avx, Menu. Also the front LEDs are visible here. Power LED, Card Reader LED, Temperature Sensor LED and Lamp LED.

LAMP LEDNeed to replace the lamp if lamp still doesn't

light after next power on, check the assembly of Lamp unit.

TEMP LED Call for Service

POWER LED

If the LAMP, TEMP and POWER are blinking in this order, the unit is warming up.

Page 27: LCD Power Point Things Know

Speaker Grill BumpySPEAKER GRILL MAY APPEAR WRINKLED:

Please note; the Customer may complain about the speakers grills looking wrinkled or bumpy. If you rub you hands across the speaker grills you can feel the bumps. (See picture below).

1. You can see the square holes from the speaker~ A clear indicator the screen metal is very thin and or maybe because the inside is black.

2. If you move to see the speaker grills at different angles, you can clearly see bumps and or valleys.

3. All of these are very dependant upon the light being reflected on them.

Bottom line is that this is normal. The front frame is available as a part if it is determined that the Speaker Grill has a defect. See below for p/n.

Page 28: LCD Power Point Things Know

Minimum Clearance In Wall Mount

Unit Shuts Off after a length of time operating Normally.

Minimum Clearance for Wall Mounting.

Do not block rear Fan exhaust port. A minimum of a 2 inch clearance is necessary.

If the Fan Exhaust port is blocked, the temperature will rise in the Engine assembly and cause a thermal switch to activate, shutting off the unit.

After a cool down period and the set is unplugged for greater than 30 seconds, the set will return to normal operation.

Page 29: LCD Power Point Things Know

Sounds Engine IDFAN PART NUMBERS AND IDENTIFICATION:

Upper Lamp Fan             UX21521      Located right on top of Lamp Assembly. Comes as assembly.Lower LCD Panel Fan   GS00931      Located bellow LCD Lens Assembly.

Page 30: LCD Power Point Things Know

Upper Fan Housing 1(01)

Access the rear of the unit.  Remove screws from the Lower Rear Cover. (19 screws) 

Page 31: LCD Power Point Things Know

Upper Fan Housing 2(02)

Lower Rear Cover removed.

Page 32: LCD Power Point Things Know

Upper Fan Housing 3(03)

Disconnect the two connectors on the left side of the Ballast Power Supply. 

Page 33: LCD Power Point Things Know

Upper Fan Housing 4(04)

Remove screws securing the Ballast Power Supply. (4 screws)

Page 34: LCD Power Point Things Know

Upper Fan Housing 5(05)

Relocate the Ballast Power Supply so it’s out of the way, as shown. 

Page 35: LCD Power Point Things Know

Upper Fan Housing 7(07)

Disconnect the Lamp Switch connector. (2 wires)  

Page 36: LCD Power Point Things Know

Upper Fan Housing 8(08)

Remove screws holding Fan Housing Bracket. (2 screws)

Page 37: LCD Power Point Things Know

Upper Fan Housing 9(09)

Disconnect the Fan Power connector. (3 wires)  

Page 38: LCD Power Point Things Know

Upper Fan Housing 10(10)•Ballast Power Supply out of the way.  •Temperature Sensor removed.  •Lamp Switch connector disconnected.  •Lamp Housing Bracket unscrewed.  •Lamp Power connector disconnected. 

Page 39: LCD Power Point Things Know

Upper Fan Housing 11(11)

Remove Fan Assembly by lifting and turning slightly to the right.

Page 40: LCD Power Point Things Know

Upper Fan Housing 12(12)

Remove 2 screws holding the Fan Housing Bracket on new Fan Assembly (lower picture), so it resembles the old Fan Assembly (upper picture).

                               

Old Fan Assembly New Fan Assembly

Page 41: LCD Power Point Things Know

Upper Fan Housing 13(13)

•Install new Fan Assembly. 

•Re-connect all connectors which were disconnected. 

•Re-install all screws which were removed. 

Page 42: LCD Power Point Things Know

Upper Fan Housing 14(14)

•Re-install the Ballast Power Supply. 

Page 43: LCD Power Point Things Know

Upper Fan Housing 15(15)

•Install the Rear Cover.

Page 44: LCD Power Point Things Know

Upper Fan Housing 16(16)

•Installation Complete. 

•Test the set. 

•Listen for any abnormal sounds and for proper operation. 

Page 45: LCD Power Point Things Know

Bottom Fan Filter 1

Bottom Fan Filter Tape can come loose touching the bottom Fan.   

•Sometimes this filter can be accidentally pushed in when the Technician is handling the new engine and strike the fan or even stop the fan generating noise.

•Sometimes the small piece of tape inside can come loose and strike the fan or even stop the fan generating noise.

The picture below shows the bottom of the Engine. The Fan Filter is shown by the arrow.

Page 46: LCD Power Point Things Know

Bottom Fan Filter 2•The Fan Filter and Fan are enclosed by the bottom filter cover.

•This cover can be removed to gain access to the Fan Filter and the bottom Fan.

Page 47: LCD Power Point Things Know

Bottom Fan Filter 3Here is a close up view of the back side of the bottom Fan Filter. Notice that the Tape has come loose here and can strike the Fan and/or even prevent the Fans rotation. Noise can be generated when this tape or the Filter has been pushed in and it strikes the Fan.

Page 48: LCD Power Point Things Know

Bottom Fan Filter Pushed In)

While handling a new Engine, the Bottom Fan Filter can be pushed in touching the bottom Fan. 

Page 49: LCD Power Point Things Know

Black Side Panels can be turned on and off from the Customer's Menu.

However, when the gray side panels are turned off and the side panels become black, when the set is turned off and back on, the Gray Side Panels are restored.Owner's Guide Note Should Read:Set Black Side Panel - The BLACK SIDE PANEL function turns the gray side bars on/off when watching 4:3 signals in Standard mode. The top/bottom gray bar will appear in SPLIT MODE PIP and SPLIT FREEZE.The TV set will always return to "Set Black Side Panel -Off" setting when the TV is power off even though it is set to "On."

Page 50: LCD Power Point Things Know

Ghost only on Text from Subtitles from a DVD Player.

•This in NOT the GHOST adjustment.

DVD Player hooked to the LCD Projection by component

inputs. This is only noticeable on the Text.

Example: Closed Caption (Sub Titles) coming from the

DVD player. This can be corrected by turning the

progressive mode "ON" in the DVD player. And, in case

the customer is not using a Progressive Out DVD Player

and some other source, the customer can select the

option NOISE REDUCTION and change it to HIGH.

Normally it is defaulted to OFF.

Page 51: LCD Power Point Things Know

Lines in the Picture. Picture 1

Page 52: LCD Power Point Things Know

Lines in the Picture. Picture 2

Page 53: LCD Power Point Things Know

Lines in the Picture Cause

Lines in the Picture or other picture anomalies, Intermittent.

•Intermittently when turned on the video consists of sections of horizontal lines on the screen and audio is present. Check the Connector from the Signal PWB to the Flex Converter (PSC3). Be careful with this connector as it is fragile and easily bent or flexed.

•Ribbon Connector Defective or

•Ribbon Connector Locking Mechanism on Flex Converter Defective:

•If the Ribbon Connector Lock mechanism on the Flex Converter is broken, missing or damage or the Ribbon Connector between the Flex Converter and Signal PWB is defective;

•Please see the following page.

Page 54: LCD Power Point Things Know

Connector Broken on Flex ConverterFLEX CONVERTER RIBBON CONNECTOR LOCK MISSING OR BROKEN:

The Flex Converter on top of the Engine assembly has a flat white ribbon cable that connects from the Signal PWB. This connector has a Lock (Brown in Color) that can become detached, loss or damaged, Sometimes the brown lock mechanism will fall down into the cabinet. Please look for it first.  If you find a Flex Converter ribbon cable lock missing or damaged and the Lock can not be found, please order the Flex Converter.

FLEX CONVERTER

50V500     p/n CS00771

50V500A, 50VX500, 60V500A and 60VX500   p/n CS00772

RIBBON CABLE FROM FLEX to SIGNAL p/n EK01182

Page 55: LCD Power Point Things Know

All White PicturePICTURE IS ALL WHITE, MAY APPEAR BLUISH.

Sound will be OK. In this case, please replace the Flex Converter

FLEX CONVERTER

50V500      p/n CS0077150V500A, 50VX500, 60V500A and 60VX500   p/n CS00772

Page 56: LCD Power Point Things Know

Red Speckles, Dots in the Picture

Check connector from the Flex to the Drive PWB

Page 57: LCD Power Point Things Know

Red Dots Fix Connector LocationCheck connector from the Flex to the Drive PWB

If this doesn’t fix the problem, the Flex or the Engine must be replaced.

Page 58: LCD Power Point Things Know

LAMP ISSUES

Page 59: LCD Power Point Things Know

Explain Lamp Troubleshooting Flow Chart

First, some clarification related to this Flowchart is necessary. The block which states * PSL #4 pin Voltage sequence is like below? a) high (3s) b) low (3s) c) high (15s) d) low (3s). This indicates seconds in which the ballast is attempting to light the Lamp. The Connector PSL is a very small connector that actually faces down with the ballast  is installed. It is also very difficult to access. It's much easier to use the Spark Gap process for determining if the Ballast is attempting to fire up the Lamp. Take a look at the bottom of the flow chart below. If the Spark Gap sparks when trying to turn on the set, it's almost a guarantee that the ballast is working OK and it's the Lamp that's defective. Also, the LEDs on the front of the LCD will flash in sequence Left to right as this process is attempting to light the Lamp. The front LEDs doesn't guarantee that the ballast is functioning correctly, but it does indicate the System Control process for lighting the Lamp is working.

Page 60: LCD Power Point Things Know

Lamp Troubleshooting Flow Chart

Page 61: LCD Power Point Things Know

Lamp Troubleshooting Flow Chart 2

Page 62: LCD Power Point Things Know

Lamp Won’t Light 1

1. Check the Door Switch for correct operation.

• If the Lamp Door Switch is not closing correctly, the Lamp LED will blink.

• If the Lamp Door Switch is closed the Lamp LED will stop blinking without removing Power.

This switch is difficult to confirm if it is being activated by the Door. Getting to the back of the switch requires removing the back, and back right hand Sub Woofer to gain access to the switch. Check with ohm meter for closure. Switch closure will indicate a short when closed. This is a silent switch. No noise is heard when the switch is closed.

Use a instrument to depress the switch manually. The LED should stop blinking if this switch is the problem.

The pictures below show the Lamp Door Switch. Door Removed.

Page 63: LCD Power Point Things Know

Lamp Won’t Light 22. If this switch is found to work correctly. 

3. Then investigate the Door switch activator tab. This tab may need a small piece of tape applied to activate the door switch.

The door switch can be modified slightly to assist without using tape by bending the actuating lever.

Look at the tab and apply a small piece of tape which

increases the arm movement on the Door Switch lever.

Page 64: LCD Power Point Things Know

Lamp Won’t Light 3Remove the Lamp Door Switch.

To Remove the Lamp Door Switch.

1. Remove the Back.

2. Remove the Right hand (as viewed from the rear) Sub Woofer 2 screws.

3. The Door Switch is accessible from this point. Use a Phillips screwdriver and remove the two screws holding the Lamp Door Switch.

This picture shows the Lamp Door Switch. (Rear View) After removing the door switch. The brass lever which activates the door switch must be slightly bent towards the Door. The Bend must be above the blue switch, not below.Bend no more that 1 or 2 mm.

Page 65: LCD Power Point Things Know

Lamp Failure DO NOT Turn the Set Off by removing the AC Power.

DO NOT turn this set off using a device that switches AC off. The Lamp develops a great deal of heat during operation. When the set is turned off, there is a Cool Down Cycle. During this time, the Power LED blinks. First fast blinks, then slow blinks. It is not until the Power LED goes off completely that the AC can be removed. Turning the Set On and Off using switched AC will greatly shorten the Life of the Lamp.

Page 66: LCD Power Point Things Know

Too Long Screws can cause damage

Not the 50V500 Series

Page 67: LCD Power Point Things Know

Too Long Screw pg 2

This picture shows the Screw lengths

Page 68: LCD Power Point Things Know

Too Long Screw pg 3

Where damage occurs

Page 69: LCD Power Point Things Know

Too Long Screw pg 4

Where damage occurs

Page 70: LCD Power Point Things Know

Top Fan Wires can Get Pinched

Where damage occurs

Page 71: LCD Power Point Things Know

Picture gets Bright Flashes back to normal

Fan Wires Pinched.

Where damage occurs

Page 72: LCD Power Point Things Know

Thermal Switch Part Number Missing

Part Number p/n FH00051U

Page 73: LCD Power Point Things Know

Do Not replace the Ballast when Replacing a Broken Lamp.

NOTE: Most technicians are replacing the Ballast and Lamp when they find a defective Lamp. Please do not do this.

Our investigation founds that almost all ballast returned are "NOT DEFECTIVE".

Only replace the Lamp.

Page 74: LCD Power Point Things Know

The Model and Serial Number is on the Front Right Hand Side for easy access.

Page 75: LCD Power Point Things Know

DVI STATES "HD CONTENT COMPROMISED"

ERROR NOTICE:DVI Interface with some Cable Boxes.

When selecting some HD Channels, the notice reads as follows:  "The HD content protection on your display has been

compromised.  Please use the Y Pb/Pr Outputs for your HD connection".

or" Monitor Does not support HDCP"

The warning will show up at power on and will remain there if left alone.

OTHER POSSIBLE ERRORS:"Snow" or the "Resolution may Drop to 480P"

Page 76: LCD Power Point Things Know

HD CONTENT COMPROMISED pg 2EXPLANATION:

"This is not a problem with the Projection Television".

With the addition of Digital transmission, many avenues of private digital data and usage privileges are beingincorporated into the transmission stream. During this age of HD infancy, these codes are being manipulated and can generate this situation. HDCP is the issue here.Please contact your local cable operator for additional information.

A TEMPORARY WORK-AROUND:With the TV and the Cable Box "ON", disconnect and reconnect the DVI cable between your cable box and TV.Your patience is appreciated until this issue can be resolved by the cable operator and the software they are using.

Page 77: LCD Power Point Things Know

Spider Web Appearance On Screen

This can happen if an LCD panel cracks.

Replacement of the Engine assembly is the only repair for this symptom.

Blue LCD Panel Cracked Red LCD Panel Cracked

Page 78: LCD Power Point Things Know

Bad Pixel Reporting Form

BAD PIXELS;  BRIGHT or DARK SPOTS:When there is a customer's complaint about a pixel and/or pixels which have failed, a report must be submitted.

 FIRST TIME USE IMPORTANT NOTES: 1. A small number of missing, discolored, or lit all the time dots or

pixels is characteristic of TFT LCD technology due to manufacturing process for such technology irrespective of

manufacturer. If your LCD has defective pixels, it should not be considered defective. 

Page 79: LCD Power Point Things Know

PA-0185 Schematic for the LC-37 doesn't have the Drive Circuit included. 

Download from our Web Site

Page 80: LCD Power Point Things Know

POD (Cable Card) Possible Problems (Not these Chassis)

LCD Projection Models with a Digital Module Involved:

First and foremost, confirm the Software Version is current. If not, contact 1-800-Hitachi

If after inserting the Cable Card, the unit IDENTIFIES the Cable Card and  goes on to provide a notice as to how to start Service or it just stars receiving the approved programming.  If all this goes on, it is obvious that card and the host (receiver) have established what is commonly known as the "Handshake" and all is Normal.

If for any reason, this does not happen, and the "Handshake" does not occur, then most likely there is a problem with the Cable Card itself.  Please get a different or a new Cable Card to try again.

Page 81: LCD Power Point Things Know

I2C Adjustments are not seen in 1080i mode When the input of 1080i is selected then the set is turned off, when the set comes back on it will return to that 1080i input if it's still present.

CAUTION: When the I2C Service Menu is selected and the input was set for a 1080i source, the Service Menu can not be seen. Even though the Service Menu can not be seen, it still can be manipulated. So the Service Technician will not know what adjustments are being changed.

Do not enter the Service Menu when the input of 1080i is selected or change the signal source to 1080i while in the Service Menu

Page 82: LCD Power Point Things Know

Set Will Not Turn On (Intermittent)

Front Lamp LED Blinks or is on solid. Replace Lamp. Do not replace Ballast. Sometimes the Set may turn on and work normally.

Page 83: LCD Power Point Things Know

SCREEN SMUDGES

Replace the Screen

Page 84: LCD Power Point Things Know

SCREEN SMUDGES Screen Part Numbers

Original Replace By

  50V500   KR02911   KR03131

  50V500A   KR02913   KR03131

  50VX500   KR02915   KR03132

  60V500A   KR02912  

  60VX500   KR02916  

Page 85: LCD Power Point Things Know

Screen May Appear Slightly Bowed

This is normal for the LCD screen.

This prevents separation from happening between the Fresnel and Scratch Protective Screen.

Page 86: LCD Power Point Things Know

Unit Shuts Off After a Length of Time Operating Normally

Do not block rear Fan exhaust port. A minimum of a 2 inch clearance is necessary. If the Fan Exhaust port is blocked, the temperature will rise in the Engine assembly and cause a thermal switch to activate, shutting off the unit. After a cool down period and the set is unplugged for greater than 30 seconds, the set will return to normal operation.

Page 87: LCD Power Point Things Know

Using TIVO and DVI out, the picture is blacked out.

On the TIVO, do an AC reset. Unplug the TIVO and wait 60 seconds, the reapply power.

Discoloring, shading, or a noticeable spot on screen.

See the http://www.hitachiserviceusa.com Web Site for LCD Panel cleaning procedure.Download this procedure from our Web Site

Page 88: LCD Power Point Things Know

Discoloring, shading, or a noticeable spot on screen.

See the http://www.hitachiserviceusa.com Web Site for LCD Panel cleaning procedure.Download this procedure from our Web Site

Page 89: LCD Power Point Things Know

DO NOT Turn the Set Off by removing the AC Power.

AC NOTE: DO NOT turn this set off using a device that switches AC off. The Lamp develops a great deal of heat during operation. When the set is turned off, there is a Cool Down Cycle. During this time, the Power LED blinks. First fast blinks, then slow blinks. It is not until the Power LED goes off completely that the AC can be removed.

Turning the Set On and Off using switched AC will greatly shorten the Life of the Lamp.

Page 90: LCD Power Point Things Know

I2C Adjustments are not seen in 1080i mode

When the input of 1080i is selected then the set is turned off, when the set comes back on it will return to that 1080i input if it's still present.CAUTION:When the I2C Service Menu is selected and the input was set for a 1080i source, the Service Menu can not be seen.Even though the Service Menu can not be seen, it still can be manipulated. So the Service Technician will not know what adjustments are being changed. Do not enter the Service Menu when the input of 1080i is selected or change the signal source to 1080i while in the Service Menu

Page 91: LCD Power Point Things Know

LCD Projection Television Service Policy

"Board Level Repair". It's not necessary for a PWB to be replaced if there can be found a simple repair.PWBs and the Engine does not require Authorization to order.NOTE: When returning a PWB that has been replaced, there is a form that comes with the replacement PWB. Please fill this form out completely. Very Important.NOTE: When returning an Engine that has been replaced, there are two forms that comes with the replacement Engine. (1) The Engine Replacement Form and (2) The Accumulated Operating Time Form. Please fill these forms out completely. Very Important. Failure to do so may prevent re-imbursement.See the Section “08 Service Policy” for the Forms:

Page 92: LCD Power Point Things Know

Engine Return Form

Page 93: LCD Power Point Things Know

Accumulated Operation Time Form

Page 94: LCD Power Point Things Know

PWB Return Form