Sharp LC-32DH57E-BK, LC-32DH57RU-BK, LC-32DH57S-BK Service Manual

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LC-32DH57E-BK/RU-BK/S-BK

SERVICE MANUAL

No. S59Z3LC32DH57

LCD COLOUR TELEVISION

LC-32DH57E-BK LC-32DH57RU-BK

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

LC-32DH57S-BK

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

CAUTION ............................................................i

Precautions for using lead-free solder ...............ii

End of life disposal ............................................ iii

CHAPTER 1. OPERATION MANUAL

[1] SPECIFICATIONS ......................................... 1-1

[2] OPERATION MANUAL .................................. 1-2

[3] DIMENSIONS ................................................ 1-6

CHAPTER 2. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS ................... 2-1

CHAPTER 3. ADJUSTMENT PROCEDURE

[1] ADJUSTMENT PROCEDURE ....................... 3-1

CHAPTER 4. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE ....................... 4-1

CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM

[1] SYSTEM BLOCK DIAGRAM .........................6-1

[2] OVERALL WIRING DIAGRAM ......................6-2

CHAPTER 7. PRINTED WIRING BOARD

[1] MAIN UNIT PRINTED WIRING BOARD........7-1

[2] LED UNIT/KEY UNIT PRINTED WIRING

BOARD.......................................................... 7-5

[3] POWER UNIT PRINTED WIRING

BOARD.......................................................... 7-6

[4] INVERTER UNIT PRINTED WIRING

BOARD.......................................................... 7-8

CHAPTER 8. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM............................................................8-1

[2] SCHEMATIC DIAGRAM ................................8-2

Parts Guide

CHAPTER 5. MAJOR IC INFOMATIONS

[1] MAJOR IC INFOMATIONS ............................ 5-1

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used for after sales service only. The contents are subject to change without notice.

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LC-32DH57E-BK/RU-BK/S-BK

LC-32DH57E-BK

Service Manual

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRECAUTION

 WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

 BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Before returning the receiver to the user, perform the following safety checks:

3. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver.

4. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.

5. To be sure that no shock hazard exists, check for leakage current in the following manner.

• Plug the AC cord directly into a 220~240 volt AC outlet.

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.

• Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.

• Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.) Any reading of 1.05 V peak (this corresponds to 0.7 mA peak AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

SAFETY NOTICE

Many electrical and mechanical parts in LCD color television have special safety-related characteristics.

These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc.

Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features

are identified by “ ” and shaded areas in the Replacement Parts List and Schematic Diagrams.

For continued protection, replacement parts must be identical to those used in the original circuit.

The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards.

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

CAUTION:

FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE.

F7001, F7002 (3.15A/250V)

DVM

AC SCALE

1.5k ohm 10W

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

0.15µF

TEST PROBE

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LC-32DH57E-BK/RU-BK/S-BK

Precautions for using lead-free solder

Employing lead-free solder

• “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.

Example:

Using lead-free wire solder

• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks.

As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 °C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering

• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder by 40 °C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.

Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required.

If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

• Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

Part No. Description Code

ZHNDAi123250E J φ0.3mm 250g (1roll) BL ZHNDAi126500E J φ0.6mm 500g (1roll) BK ZHNDAi12801KE J φ1.0mm 1kg (1roll) BM

L Fa

Indicates lead-free solder of tin, silver and copper.

L F a/a

Indicates lead-free solder of tin, silver and copper.

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LC-32DH57E-BK/RU-BK/S-BK

iii

End of life disposal

Attention: Your product is marked with this symbol. It means that used electrical and electronic products should not be mixed with general household waste. There is a separate collection system for these products.

A. Information on Disposal for Users (private households)

1. In the European Union

Attention: If you want to dispose of this equipment, please do not use the ordinary dust bin!

Used electrical and electronic equipment must be treated separately and in accordance with legislation that requires proper treatment, recovery and recycling of used electrical and electronic equipment. Following the implementation by member states, private households within the EU states may return their used electrical and electronic equipment to designated collection facilities free of charge*. In some countries* your local retailer may also take back your old product free of charge if you purchase a similar new one. *) Please contact your local authority for further details.

If your used electrical or electronic equipment has batteries or accumulators, please dispose of these separately beforehand according to local requirements.

By disposing of this product correctly you will help ensure that the waste undergoes the necessary treatment, recovery and recycling and thus prevent potential negative effects on the environment and human health which could otherwise arise due to inappropriate waste handling.

2. In other Countries outside the EU

If you wish to discard this product, please contact your local authorities and ask for the correct method of disposal.

For Switzerland: Used electrical or electronic equipment can be returned free of charge to the dealer, even if you don’t purchase a new product. Further collection facilities are listed on the homepage of www.swico.ch or www.sens.ch.

B. Information on Disposal for Business Users

1. In the European Union

If the product is used for business purposes and you want to discard it:

Please contact your SHARP dealer who will inform you about the take-back of the product. You might be charged for the costs arising from take-back and recycling. Small products (and small amounts) might be taken back by your local collection facilities.

For Spain: Please contact the established collection system or your local authority for take-back of your used products.

2. In other Countries outside the EU

If you wish to discard of this product, please contact your local authorities and ask for the correct method of disposal.

The battery supplied with this product contains traces of Lead.

For EU: The crossed-out wheeled bin implies that used batteries should not be put to the general household waste! There is a separate collection system for used batteries, to allow proper treatment and recycling in accordance with legislation. Please contact your local authority for details on the collection and recycling schemes.

For Switzerland: The used battery is to be returned to the selling point.

For other non-EU countries: Please contact your local authority for correct method of disposal of the used battery.

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LC-32DH57E-BK

Service Manual

CHAPTER 1. OPERATION MANUAL

[1] SPECIFICATIONS

Item

LCDCOLOURTV(32"), LC-32DH57E, LC-32DH57RU, LC-32DH57S

LCD panel

Advanced Super View & BLACK TFT LCD (32")

Resolution 1,049,680 pixels (1,366 x 768)

Video Colour System PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60

TV Function

TV-Standard

Analogue CCIR (B/G, I, D/K, L/L’)

Digital DVB-T (2K/8K OFDM)

Receiving Channel

VHF/UHF

IR A ch_E69 ch (Digital), E2_E69 ch, F2_F10 ch, I21_I69 ch, IR A_IR J ch

CATV

Hyper-band, S1_S41 ch

TV-Tuning System

Auto Preset 999 ch (non-Nordic [DTV]), Auto Preset 9999 ch (Nordic [DTV]), Auto Preset 99 ch (ATV), Auto Label, Auto Sort

STEREO/BILINGUAL NICAM/A2

Viewing angles 176 ° (H), 176 ° (V)

Audio amplifier 10 W x 2

Speaker (35 mm x 100 mm) x 2

Terminals

Antenna

UHF/VHF 75

Ω

Din type (Analogue & Digital)

RS-232C D-Sub 9 pin male connector

EXT 1 SCART (AV input, Y/C input, RGB input, TV output)

EXT 2 SCART (AV input/monitor output, Y/C input)

EXT 3 COMPONENT IN (Y/P

B(CB

)/PR(CR), RCA pin (AUDIO R/L))

EXT 4 15 pin mini D-sub

HDMI 1 (EXT 5) HDMI

HDMI 2 (EXT 6) HDMI

HDMI 3 (EXT 7) HDMI

EXT 8 RCA pin (AV input)

SERVICE USB

HDMI 2/PC AUDIO (R/L) Ø 3.5 mm jack*

DIGITAL AUDIO OUTPUT Optical Digital audio output

C. I. (Common Interface) EN50221, R206001

OUTPUT RCA pin (AUDIO R/L)

Headphones Ø 3.5 mm jack (Audio output)

OSD language

Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Italian, Latvian, Lithuanian, Norwegian, Polish, Portuguese, Russian, Slovak, Slovene, Spanish, Swedish, Turkish, Ukrainian

Power Requirement

AC 220-240 V,50 Hz

Power Consumption (Method IEC62087)

90 W (0.6 W Standby)

Weight 10.5 kg (Without stand), 11.5 kg (With stand)

Operating temperature

0°Cto+40°C

The HDMI 2 and EXT 4 terminals can both use the same audio input terminal. As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.

NOTE

Refer to the inside back cover for dimensional drawings.

•

Optional accessory

The listed optional accessory is available for this LCD colour TV. Please purchase them at your nearest shop.

Additional optional accessories may be available in the near future. When purchasing, please read the newest catalogue for compatibility and check the availability.

•

No. Part name Part number

Wall mount bracket (LC32DH57E, LC-32DH57RU, LC-32DH57S)

AN-37AG5

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[2] OPERATION MANUAL

TV (Front view)

1 2 3

Remote control sensor OPC sensor

(Standby/On indicator)

(Power button)

MENU (Menu button)

(Input source button) P/ (Programme [channel] buttons)

+/- (Volume buttons)

1 2 3 4 5 6 7

TV (Rear view)

8 9

14 15 16 17

COMMON INTERFACE slot SERVICE terminal (USB terminal for service personnel only) HDMI 3 (HDMI) terminal EXT 8 terminals Headphones AC INPUT terminal EXT 4 (ANALOGUE RGB) terminal HDMI 1 (HDMI) terminal HDMI 2 (HDMI) terminal Antenna terminal HDMI 2/PC AUDIO (R/L) jack* DIGITAL AUDIO OUTPUT terminal RS-232C terminal EXT 3 (COMPONENT/AUDIO) terminals EXT 1 (RGB) terminal EXT 2 (AV) terminal OUTPUT (AUDIO) terminals

WARNING

Excessive sound pressure from earphones and headphones can cause hearing loss. Do not set the volume at a high level. Hearing experts advise against extended listening at high volume levels. The SERVICE terminal is reserved only for qualified service personnel. Do not connect anything to the terminal.

1 2

3 4 5 6 7

8 9 10 11 12

13 14

15 16 17

•

The HDMI 2 and EXT 4 terminals can both use the same audio input terminal (HDMI 2/PC AUDIO (R/L)). However, the proper item must be selected in the “PC Audio Select” menu.

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Remote control unit

(Standby/On)

Numeric buttons 0-9

Set the channel. Enter desired numbers. Set the page in teletext mode.

When the five Nordic countries (Sweden, Norway, Finland, Denmark, or Iceland) are selected in the country setting from “Auto Installation”, DTV/A TV channels are four digits. When another country is selected, DTV/ATV channels are three digits.

(Flashback)

Press to return to the previously selected channel or external input.

(WIDE MODE)

Select a wide mode.

(Freeze)

Press to freeze a moving image on the screen.

/ / / (Cursor)

Select a desired item on the setting screen.

Execute a command within the “MENU” screen. TV: Display the programme list when no other “MENU” screen is running.

END

Exit the “MENU” screen.

Colour (Red/Green/Yellow/ Blue) buttons

The coloured buttons are correspondingly used to select the coloured items on the screen (e.g., EPG, MHEG-5, Teletext).

EPG

TV: Display the EPG screen.

•

(Display information)

Press to display the station information (channel number, signal, etc.) in the upper right corner of the screen.

SLEEP

Press to schedule a time for the TV to automatically standby.

AV MODE

Select a video setting.

ECO (Off/Standard/Advanced)

Select “Energy Save” setting.

(Sound mode)

Select a sound multiplex mode.

(Mute)

TV sound on/off.

+/- (Volume)

Increase/decrease TV volume.

Select the TV channel.

(INPUT SOURCE)

Select an input source.

Directly select EXT 4.

“MENU” screen on/off.

RETURN

Return to the previous “MENU” screen.

Buttons for useful operations

(Teletext)

ATV: Display analogue teletext. DTV: Select MHEG-5 and teletext for DTV.

(Reveal hidden Teletext)

(Subtitle)

Switch subtitle languages on/off.

(Freeze/Hold)

Press to freeze a moving image on the screen. Teletext: Stop updating teletext pages automatically or release theholdmode.

(Subpage)

(Top/Bottom/Full)

Set the area of magnification in teletext mode.

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Attaching the stand unit

Before attaching (or detaching) the stand, unplug the AC cord from the AC INPUT terminal. Before performing work, spread cushioning over the surface on which you will be laying the TV. This will prevent it from being damaged.

CAUTION

Attach the stand in the correct direction. Be sure to follow the instructions. Incorrect installation of the stand may result in the TV falling over.

Confirm that there are four screws with the stand unit.

Place the stand unit onto the supporting post on the bottom of the TV ( ).

Insert and tighten the four screws on the bottom of the stand unit as shown ( ).

NOTE

To detach the stand unit, perform the steps in reverse order. A screw driver is not supplied with this product.

•

Inserting the batteries

Before using the TV for the first time, insert two supplied “AA” size zinc-carbon batteries. When the batteries become depleted and the remote control unit fails to operate, replace the batteries with new “AA” size batteries.

Open the battery cover. Insert two supplied “AA” size batteries.

Place batteries with their terminals corresponding to the (+) and (-) indications in the battery compartment.

Close the battery cover.

1 2

•

CAUTION

Improper use of batteries can result in chemical leakage or explosion. Be sure to follow the instructions below.

Do not mix batteries of different types. Different types of batteries have different characteristics. Do not mix old and new batteries. Mixing old and new batteries can shorten the life of new batteries or cause chemical leakage in old batteries. Remove batteries as soon as they have worn out. Chemicals that leak from batteries can cause a rash. If you find any chemical leakage, wipe thoroughly with a cloth. The batteries supplied with this product may have a shorter life expectancy due to storage conditions. If you will not be using the remote control unit for an extended period of time, remove the batteries from it.

Using the remote control unit

Use the remote control unit by pointing it towards the remote control sensor. Objects between the remote control unit and sensor may prevent proper operation.

30° 30°

5m5m

Remote control sensor

Cautions regarding the remote control unit

Do not expose the remote control unit to shock. In addition, do not expose the remote control unit to liquids, and do not place in an area with high humidity. Do not install or place the remote control unit under direct sunlight. The heat may cause deformation of the unit. The remote control unit may not work properly if the remote control sensor of the TV is under direct sunlight or strong lighting. In such cases, change the angle of the lighting or the TV, or operate the remote control unit closer to the remote control sensor.

•

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LC-32DH57E-BK/RU-BK/S-BK

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Troubleshooting

Problem Possible Solution

No power.•

Check if you pressed on the remote control unit. If the indicator on the TV lights up red, press . Is the AC cord disconnected? Check if you pressed on the TV.

•

The TV cannot be operated.•

External influences such as lightning, static electricity, etc., may cause improper operation. In this case, operate the TV after first turning off the power, or unplugging the AC cord and re-plugging it in after one or two minutes.

•

Remote control unit does not operate.•

Are batteries inserted with polarity (+, -) aligned? Are batteries worn out? (Replace with new batteries.) Are you using it under strong or fluorescent lighting? Is a fluorescent light illuminating to the remote control sensor?

•

Picture is cut off.• Is the image position correct?

Are screen mode adjustments (WIDE MODE) such as picture size made correctly?

•

Strange colour, light colour, or dark colour, or colour misalignment.

• Adjust the picture tone. Is the room too bright? The picture may look dark in a room that is too bright. Check the “Colour System” setting.

•

Power is suddenly turned off.• The TV’s internal temperature has increased. Remove any objects blocking the vent or clean.

Is sleep timer set? Set to “Off” by pressing SLEEP on the remote control unit. Is “No Signal Off” or “No Operation Off” activated?

•

No picture.•

Are connections to external equipment correct? Is the correct input source selected? Is a non-compatible signal being input? Is the picture adjustment correct? Is the antenna connected properly? Is “On” selected in “Audio Only”?

•

No sound.• Is the volume too low?

Make sure that headphones are not connected. Check if you pressed on the remote control unit. Is the proper item selected in the “PC Audio Select” menu when connecting devices to the HDMI 2 terminal or the EXT 4 terminal?

•

The TV sometimes makes a cracking sound.

•

This is not a malfunction. This happens when the cabinet slightly expands and contracts according to changes in temperature. This does not affect the TV’s performance.

•

Cautions regarding use in high and low temperature environments

When the TV is used in a low temperature space (e.g., room, office), the picture may leave trails or appear slightly delayed. This is not a malfunction, and the TV will recover when the temperature returns to normal. Do not leave the TV in a hot or cold location. Also, do not leave the TV in a location exposed to direct sunlight or near a heater, as this may cause the cabinet to deform and the LCD panel to malfunction. Storage temperature: + 5 °C to + 35 °C.

•

Information on the software license for this product

Software composition

The software included in this product is comprised of various software components whose individual copyrights are held by SHARP or by third parties.

Software developed by SHARP and open source software

The copyrights for the software components and various relevant documents included with this product that were developed or written by SHARP are owned by SHARP and are protected by the Copyright Act, international treaties, and other relevant laws. This product also makes use of freely distributed software and software components whose copyrights are held by third parties. These include software components covered by a BSD-like License or other license agreement. We are unable to answer any questions about the source code for the open source software. The source code for the software components whose copyrights are held by SHARP is not distributed.

Acknowledgements

The following open source software components are included in this product:

• Freetype • unicode • Teletext font • libpng • zlib

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LC-32DH57E-BK/RU-BK/S-BK

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[3] DIMENSIONS

791.0 791,0

390.0 390,0

200.0 200,0

235.0 235,0

66.2 66,2

123.5 123,5

200.0

200,0

47.0

47,0

699.2 699,2

528.0

528,0

575.0

575,0

333.5

333,5

393.8

393,8

82.0

82,0

Unit: mm

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LC-32DH57E-BK/RU-BK/S-BK

2 – 1

LC-32DH57E-BK

Service Manual

CHAPTER 2. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS

1. Removing of Rear Cabinet Ass’y.

1. Remove the 1 lock screw , 3 lock screws , 9 lock screws and detach the Rear Cabinet Ass’y.

Rear Cabinet Ass'y

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2 – 2

2. Removing of Connectors, Speakers, Stand Angle Ass’y and Stand Ass’y.

1. Remove all the connectors from all the PWBs.

2. Remove the 2 lock screws and detach the Speaker-L and Speaker-R.

3. Remove the 2 lock screws , 4 lock screws and detach the Stand Angle Ass’y.

4. Remove the 4 lock screws and detach the Stand Ass’y.

Speaker-R

Speaker-L

Stand Ass'y

Stand Angle Ass'y

[SP] [SP]

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2 – 3

3. Removing of Main PWB Shield and AV Cover Ass’y.

1. Remove all the connectors from all the PWBs.

2. Remove the 4 lock screw , 2 lock screws , 1 lock screw , 6 lock screws and detach the Main PWB Shield.

3. Remove the 1 lock screw and detach the AV Cover Ass’y.

Main PWB Shield

Earth Plate

AV Cover Ass'y

[PD/LB]

Main PWB

[RA/KM]

[SP]

[LW]

[LP]

[LB]

[PD]

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2 – 4

4. Removing of LED Unit, MAIN Unit, POWER Unit, INVERTER Unit, AC Inlet Angle, Control Button and KEY Unit.

1. Remove all the connectors from all the PWBs.

2. Remove the 1 lock screw and detach the LED Unit.

3. Remove the 2 lock screws and detach the MAIN Unit.

4. Remove the 4 lock screws and detach the POWER Unit.

5. Remove the 3 lock screws and detach the INVERTER Unit.

6. Remove the 2 lock screw and detach the AC Inlet Angle.

7. Remove the Control Button.

8. Remove the KEY Unit.

POWER Unit

AC Inlet Angle

INVERTER Unit

MAIN Unit

LED Unit

[BtoB][BtoB]

Control Button

[KM]

[RA]

KEY Unit

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2 – 5

5. Removing of 32” LCD Panel Module.

1. Remove the 4 lock screws and detach the 32” LCD Panel Module from Front Cabinet.

Front Cabinet Ass'y

32" LCD Panel Module

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3 – 1

LC-32DH57E-BK

Service Manual

CHAPTER 3. ADJUSTMENT PROCEDURE

[1] ADJUSTMENT PROCEDURE

1. Adjustment method after PWB and/or IC replacement due to repair

The unit is set to the optimum at the time of shipment from the factory. If any value should become improper or any adjustment is necessary due to the part replacement, make an adjustment according to the following procedure.

1. Procure the following units in order to replace the main unit, E2PROM (IC8455).

NOTE: [Caution when replacing ICs in the main unit (IC501)]

The above ICs are EEPROMs storing the EDID data of PC data.

Before replacing the relevant part, procure the following parts in which the data have been rewritten.

2. Entering and exiting the adjustment process mode

1. Press the “MAIN POWER” key on the set of running TV set to force power off.

(Or, unplug the AC power cord of running TV set to force power off.)

2. While holding down the “ (-)” and “INPUT” keys on the set at once, press the “MAIN POWER” key on the set to turn on the power.

The letter “K” appears on the screen.

3. Next, hold down the “ (-)” and “P ( )” keys on the set at once.

Multiple lines of orange characters appearing on the screen indicate that the set is now in the adjustment process mode.

If you fail to enter the adjustment process mode (the display is the same as normal start up), retry the procedure.

4. To exit the adjustment process mode after the adjustment is done, press the MAIN POWER key and turn off a power supply. or unplug the AC power cord to force power off.

(When the power is turned off with the remote controller, once unplug the AC power cord and wait for 10 seconds before plug it in again.)

3. Remote controller key operation in adjustment process mode.

1. key operation

Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.

MAIN UNIT: DUNTKF111FM08

IC501 RH-iXC206WJQZS EDID (PC) ANALOG-RGB

CAUTION: Use due care in handling the information described here lest the users should know how to enter the adjustment process mode.

If the settings are tampered with in this mode, unrecoverable system damage may result.

Remote controller key Main unit key Remote controller key Main unit key Function

P (/) P (/)

Moving an item (line) by one (UP/DOWN)

(+/-) (+/-)

Changing a selected item setting (+1/-1) Cursor ( / ) — Turning a page (PREVIOUS/NEXT) Cursor ( / ) — Changing a selected line setting (+10/-10)

Input button Input button

Input source switching (toggle switching)

(TV→EXT1→EXT2→EXT3→EXT4→HDMI1→HDMI2→HDMI3→EXT8) OK — Executing a function

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4. Description of display

No. Description Display specification

(1) Current page/total pages 2char/2char Decimal Number mark. (2) Currentry selected input TV→EXT1→EXT2→EXT3→EXT4→HDMI1→HDMI2→HDMI3→EXT8 (3) Inch setting and destination display 32 (4) Item name Max. 30 char (5) Parameter table Max. 60 char (Preset value of each item)

(1) Current page / Total pages (2) Currentry selected input

(3) Inch setting and Model name display

PAGE 1/7 TV 32E_DH57E Adjustment process menu header

Main Version 1.14 Boot Version 20090429.1.12 T-CON Version 00 00 00 00 32 4C 32 B1 INCH SIZE xx ERROR RESET NO [NO/YES] STANDBY CAUSE 00 00 00 00 00

[1] 00H 00M

[2] 00H 00M

[3] 00H 00M

[4] 00H 00M

[5] 00H 00M

(4) Item name (5) Parameter

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3 – 3

5. Adjustment process mode menu

The character string in brackets [ ] will appear as a page title in the adjustment process menu header.

Page Line Item Description Remarks (adjustment detail, etc.)

1/7

1 Main Version 1.14 Main microprocessor version 2 Boot Version 20090429.1.12 Boot version of the main microprocessor 3 T-CON Version 00 00 00 00 32 4C 32 B1 T-CON microprocessor version 4 INCH SIZE 32 Initial Setting of panel size 5 ERROR RESET NO [NO/YES] Lamp error reset. (Select “YES” and press “OK” key.) 6 STANDBY CAUSE 00 00 00 00 00 Error standby cause. Total operating time before error.

1) 00H 00M (5 times histories)

2) 00H 00M

3) 00H 00M

4) 00H 00M

5) 00H 00M

2/7

1 INDUSTRY INIT [NO/YES(E)/YES(I)/YES(F)/YES(R) Initialization to factory settings execution. 2 PUBLIC MODE OFF [OFF/ON] ON/OFF setting of hotel mode 3 I2C DATA 000000000000 Write and read of data in I2C BUS control IC. 4 I2C STATE WAIT [STANDBY/WAIT] Execution of write and read of I2C DATA

3/7

1 INSPECT USB TERM ENTER Reading inspection of USB memory terminal 2 HDMI CEC TEST ENTER HDMI CEC test

4/7

1 VIDEO ADJ ENTER VIDEO level adjustment execution 2 CHANNEL E-9 3 GAIN 31 Gain adjustment 4 ADJ RESET NO [NO/YES] Reset of adjustment

5/7

1 COM-ADJ ENTER COMPONENT level adjustment execution 2 Y OFF SET 70 Y CUTOFF adjustment value 3 PB OFF SET 128 PB CUTOFF adjustment value 4 PR OFF SET 128 PR CUTOFF adjustment value 5 Y GAIN 140 Y GAIN adjustment value 6 PB GAIN 140 PB GAIN adjustment value 7 PR GAIN 140 PR GAIN adjustment value 8 ADJ RESET NO [NO/YES] Reset of adjustment

6/7

1 RGB-ADJ ENTER SCART RGB level adjustment execution 2 R OFF SET 128 R OFF SET adjustment value 3 G OFF SET 128 G OFF SET adjustment value 4 B OFF SET 128 B OFF SET adjustment value 5 R GAIN 80 R DRIVE adjustment value 6 G GAIN 80 G DRIVE adjustment value 7 B GAIN 80 B DRIVE adjustment value 8 ADJ RESET NO [NO/YES] Reset of adjustment

7/7

1 COM BIAS 67 Common Bias auto adjustment execution 2 LCD TEST PATTERN 0 Pattern with built-in LCD controller display 3 WB Point A 500 W/B adjustment, gradation Point A input setting 4 Point B 3500 W/B adjustment, gradation Point B input setting 5 Point A ADJ R 520 W/B adjustment, gradation Point A R_adjustment value 6 ADJ G 500 W/B adjustment, gradation Point A G_adjustment value 7 ADJ B 380 W/B adjustment, gradation Point A B_adjustment value 8 Point B ADJ R 3500 W/B adjustment, gradation Point B R_adjustment value

9 ADJ G 3500 W/B adjustment, gradation Point B G_adjustment value 10 ADJ B 3160 W/B adjustment, gradation Point B B_adjustment value 11 WB WRITE NO [NO/YES] W/B writing of adjustment values 12 WB RESET NO [NO/YES] Reset of W/B adjustment value

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6. Special features

1. STANDBY CAUSE (Page 1/7)

Display of a cause (code) of the last standby.

The cause of the last standby is recorded in EEPROM whenever possible.

Checking this code will be useful in finding a problem when you repair the troubled set.

7. ROM Writing (HDMI_EDID)

1. EDID writing

1) Get ready the PC with COM port (RS-232C) running on Windows 95/98/ME/2000/XP operating system, as well as the RS-232C cross cable.

2) Start the set with the set connected with the personal computer with the RS232C cross cable.

3) Start the terminal software. (The freeware readily available on the Internet will do.)

4) Make the following settings.

5) Input following commands to terminal software.

6) It usually returns to a state by AC-OFF/ON.

Disconnect and connect AC cable, then TV wakes up with normal mode.

2. Software version

*1 Please refer to the change report document for the latest version (Issued it to SEES).

Baud rate : 9600 bps Data LENGTH : 8bit Parity bit : none Stop bit : 1 bit Flow control : none

“KRSW0001” PC replies “ERR” (you should ignore this replay) “KKT10037” PC replies “OK” “WRED0000” PC replies “OK” ... At that time, EDID writing finish with succeess.

(1) Mainmicon Software Ver. 1.14 *1 (2) Boot version of mainmicon Software Ver. 1.12 *1 (3) T-CON Monitor micon Software Ver. 1.0 *1

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8. Adjustment procedure

1. Inch Setting

2. COMB-BIAS Adjustment

Adjustment point Adjustment conditions Adjustment procedure

1 Inch Setting Adjustment process mode

Adjustment process “INCH SIZE” menu page 1/7

1) Inch Setting with adjustment process mode.

2) Enter the adjustment process mode, refering to the 2nd item.

3) By using P ( / ) key of R/C, Move the cursor to “INCH SIZE” on page 1/

4) Select inch size 32 with the Volume (+)/(-) key of remote control.

5) Press the “OK” key of remote control.

6) After a while, If “*** OK ***” is displayed, the setting is completed.

Adjustment point Adjustment conditions Adjustment procedure

1 COM-BIAS Adjustment A visual check

Adjustment process “COM BIAS” menu page 7/7

1) COM-BIAS Adjustment with adjustment process mode.

2) Enter to the adjustment process mode, refering to the 2nd item.

3) By using / key and P ( / ) key of R/C, Move the cursor to “COMBIAS” on page 7/7.

4) Press the “OK” key. then, you can check that the pattern for adjustment is displayed.

5) Adjust so that the flicker for the central part of a screen becomes the minimum using the volume (+)/(-) key of R/C.

6) In order to exit from this process, press the “OK” key of remote control again.

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9. Video signal adjustment procedure

* The adjustment process mode menu is listed in 5th item.

Signal generator level adjustment check (Adjustment to the specified level)

1. Picture Adjustment

1) Entering the adjustment process mode

2) TUNER adjustment

3) ADC adjustment (Component 33K)

4) PC signal adjustment (Analog D-SUB15pin)

• Composite signal PAL/SECAM : 0.7Vp-p ± 0.02Vp-p (White level from pedestal)

• PC (Analog D_sub15pin) signal : 0.7Vp-p ± 0.02Vp-p (White level from pedestal)

• 33K component signal : Y level 0.7Vp-p ± 0.02Vp-p (White level from pedestal) : PB,PR level 0.7Vp-p ± 0.02Vp-p

Adjustment point Adjustment conditions Adjustment procedure

Enter to the adjustment process mode, refering to the 2nd item.

Adjustment point Adjustment conditions Adjustment procedure

1 Setting [Signal]

PAL split colour Bar In-house UV

[Terminal] TUNER

• Feed the In-house signal (PAL color bar) to TUNER.

• Make sure the PAL colour bar pattern has the sync level of 7:3 with the picture level.

• Feed the SMPTE color bar signal to TUNER. JABIL: 203.25MHz

2 Auto adjustment

performance

Adjustment process [VIDEO ADJ] menu page 4/7

Bring the cursor on [VIDEO ADJ] and press OK key [*** OK ***] appears when finished.

Adjustment point Adjustment conditions Adjustment procedure

1 Setting [Signal]

COMP 33K 50Hz 100% Full field colour bar

[Terminal] EXT3 CONPONENT input

• Feed the COMPONENT 33K 100% Full field colour bar (colour saturation level 100%) signal to the CONPONENT video input of EXT3.

2 Auto adjustment

performance

Adjustment process [COM ADJ] menu page 5/7

Bring the cursor on [COM ADJ] and press OK key [*** OK ***] appears when finished.

Adjustment point Adjustment conditions Adjustment procedure

1 Setting [Signal]

XGA 60 Hz 100% Full field colour bar

[Terminal] EXT4 PC input

• Feed the XGA 60Hz 100% Full field colour bar (colour saturation level 100%) signal to the EXT4 PC input.

2 Auto adjustment

performance

Adjustment process [RGB ADJ] menu page 6/7

Bring the cursor on [RGB ADJ] and press OK key [*** OK ***] appears when finished.

[In-house signal E12CH]

100% white Black

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10. White Balance Adjustment

Adjustment gradation values (INFO) appear on page 7/7 3-4 lines of process adjustment, and adjustment initial values (offset value) appear on pages 7/7 5-10 lines. For white balance adjustment, adjust the offset values on pages 7/7 5-10 lines.

1. Preparation

1) Luminance meter reference device :Minolta CA-210

2) Condition of the unit for adjustment and inspection :Modulated light: MAX (+16)

2. Setting

1) The luminance meter is set to the center of the screen of the set.

2) In “INCH SIZE” on the process adjustment page 1/7, sets it to the size of each panel with the / key to R/C.

3. Adjustment method

Check that the values of point A and B on page 7/7 of process adjustment are set as below. If not, change them accordingly.

1) Display the current adjustment status at point B. (Page 7/7 of process adjustment)

The display for checking the adjustment status is toggled by pressing the “OK” button on the remote control.

(Normal OSD display → “B” → display for check (OSD disappears) → “B” → normal OSD display → ...)

2) Read the value of the luminance meter.

3) Change Point B ADJ R/Point B ADJ B (Adjustment offset value) on page 7/7 of process adjustment so that the values of the luminance meter approach x = 0.272 and y = 0.277.

(Basically, Point B ADJ G is not changed.)

4) Follow Point A as well as item 3).

Change Point A ADJ R/Point A ADJ B (Adjustment offset value) on page 7/7 of process adjustment so that the values of the luminance meter approach x = 0.272 and y = 0.277.

5) Select “WB WRITE” on page 7/7 in the process, set “YES”, and press the OK key of remote control.

The adjustment value is written. and then shut down the AC power.

* Initial value of RGB of point B: 3500

* Initial value of RGB of point A: based on calculated of each G point

6) [Adjustment value]

* Teaching set send by engineering dept is set as reference

4. Adjustment reference standard value

WB Point A 500 WB Point B 3500

Level Spec Data Adjustment Spec Inspection Spec

Point A ref. value

Point B ref. value

500

3500

x=0.272 y=0.277 x=0.272 y=0.277

±0.001

±0.002

±0.004

Adjustment spec ± 0.004 Adjustment spec ± 0.002

Inspection spec ± 0.006 (point 1) Inspection spec ± 0.004 (Excluding the above-mentioned)

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11. QS Temperature NVM Data Confirmation

During servicing of the LCD TV set, by software upgrading or by any cleaning NVM, it’s mandatory select the “INCH SIZE” in Service Mode, Page 1, according to the size of the TV set.

12. Initialization to factory settings

After a factory setting, It ends with the AC power supply OFF.

After a factory settings, Do not turn on the power supply. If you turn on the power supply. execute the factory settings again.

Do not do power supply OFF by remote control.

CAUTION: When the factory settings have been made, all user setting data, including the channel settings, are initialized.

(The adjustments done in the adjustment process mode are not initialized.) Keep this in mind when initializing these settings.

Adjustment item Adjustment conditions Adjustment procedure

1 Factory settings Ends in AC power supply

OFF. (See to below caution)

[Factory setting with adjustment process mode]

• Enter the adjustment process mode.

• Move the cursor to “INDUSTRY INIT” on page 2/7.

• Use the / key of R/C to select a region from “YES (E)/YES (I)/YES (F)/YES (R)” and press the [OK] key.

• “EXECUTING” display appears and initialization starts.

• After a while, “OK” display appears, the setting is completed.

When succeeding: The background color becomes green. When failing: The background color becomes red.

NOTE: Never turn the power off during initialization. When performing factory settings (while displaying page 2 of adjustment process), confirm that the item “INCH SIZE” or the panel size displayed in the upper right corner corresponds

to each panel size. The following items are initialized in the factory setting.

1) User settings

2) Channel data (e.g. broadcast frequencies)

3) Manufacturer option setting

4) Password data

After adjustments, exit the adjustment process mode. To exit the adjustment process mode, turn off the MAIN power key. When the power is turned off with the remote control, unplug the AC power cord and plug it back in. (wait approximately 10 seconds before plugging in the AC power cord)

Default picture after cleaning NVM. Picture with [Inch Setting] to 32.䋨It is actually set as each inch.䋩

PAGE1/7 TV 32E_DH57E

㵘 MainVersion -

Boot Version T-CON Version INCH SIZE ERROR RESET NO STANDBYCAUSE 0000000000

1) 00H 00M

PAGE1/7 TV 32E_DH57E

㵘 MainVersion -

Boot Version T-CON Version INCH SIZE 32 ERROR RESET NO STANDBYCAUSE 0000000000

1) 00H 00M

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13. Functional explanation of STANDBY CAUSE

13.1. [display method]

It is displayed in the top page of the process adjustment mode. (Page displayed first when entering process mode)

13.2. [Content of display]

1. NORMAL STANDBY CAUSE

The reason that became a power-off by the specification of usual use and the main body is displayed.

(Only the one latest) It is not displayed when power supply OFF is carried out with remote control.

2. ERROR STANDBY CAUSE

When main CPU becomes a power-off detecting some abnormalities, the use time of the set at the time of the reason and the power-off is displayed five times.

When time information can be acquired from digital broadcasting, the date and time when the error occurs at the same time is recorded, displayed and when time information cannot be acquired, it becomes the above-mentioned display.

“00” is displayed when abnormality has not been detected even once.

14. Lamp error detection

1. Function description

This LCD colour television has a function (lamp error detection) to be turned OFF automatically for safety when the lamp or lamp circuit is abnormal.

If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed, the following occur.

1) The main unit of television is turned OFF about 5 seconds after it is turned ON.

(The power LED on the front side of TV turns from green to red.)

2) If the situation “1” happens 5 times sequentially, the power is turned on (relay is turned ON).

However, the backlight is not turned on, and then the relay is turned OFF after 5 to 6 seconds. (The power LED remains red.)

2. Countermeasures

When television is turned OFF by the lamp error detection mentioned above, it enters the adjustment process with the power LED red.

Entering the adjustment process, turns OFF the error detection and turns ON TV.

This enables the operation check to detect errors in the lamp or lamp circuit.

Check whether “STANDBY CAUSE” on line 6, page 1/7 of the adjustment process is “1B”. it indicates the lamp error detection was executed.

After confirming that the lamp or lamp circuit is normal, reset the lamp error counter pushing “OK” in the R/C.

After resetting counter the green bar appears on Screen.

3. Reset standby cause error list

After confirming that the lamp error counter has been erased, select “ERROR RESET”, page 1/7 of the adjustment process and select YES using the right cursor. For execute press “OK” in the R/C and the label “***OK***” appears on Screen.

Display code Display character string Reason

00 00 00 00 00 00 When based on No error 0x01 1 RC_STANDBY When based on RC Standby OFF 0x05 5 PC_OUT_OF_RANGE When based on out of range for pc OFF 0x06 6 NO_OPERATION When based on non-operated OFF 0x07 7 NO_SIGNAL When based on non-signal OFF 0x0A a SLEEP_TIMER When based on an sleep-timer OFF

0x0C c RS232C When based on the command from RS232C (standby)

0x18 18 AV_LINK When based on the command from AV-LINK (standby)

Display error code Display character string Reason

0x1A 1a TEMP_ERROR When temperature (high temperature) is abnormal. 0x1B 1b LAMP_ERROR When lamp is abnormal 0x1C 1c POWER_ERROR When power module is abnormal status.

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15. Blinking display when error is detected

When system received error report, Standby LED (red) blinks as follows.

POWER LED should keep dark while error indication.

1) Lamp error

Blink timing (1 blink/1 period)

2) Power module error

Blink timing (2 blink/1 period)

3) High temperature

Blink timing (5 blink/1 period)

Light (H)

Dark (L)

250ms

1000ms

㪣㫀㪾㪿㫋㩷㩿㪟㪀

㪛㪸㫉㫂㩷㩿㪣㪀㩷

㪈㪇㪇㪇㫄㫊

㪉㪌㪇㪉㪌㪇

㪉㪌㪇

Light (H)

Dark (L)

1000ms

250 250 250 250 250

250

250250250

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16. Upgrading the software

1. Unplug AC cable from outlet.

2. Insert an USB memory that is written a new software to USB port.

3. Keep pressing POWER button on LCD panel and plug AC cable to outlet.

4. POWER LED on panel automatically start blinking.

(POWER LED: Both red and green light blinking with sync. In other word, it looks, /blinking period is short ... 2 cycle - light - out - light - out / 1 sec.)

5. After a while (about 2 min.) following screen appears. Indicated percentage means progress of version up.

6. After the progress becomes 100%, then STATUS area changes “UPGRADE COMPLETE” as followings (POWER LED: Only green blinks slowly ... 2 sec./time).

* If above screen is not appeared and “UPGRADE FAILURE” is indicated in STATUS area, at that time update failure. Please repeat from step 1.

(POWER LED: Only red blinks slowly ... 2 sec./time).

7. Unplug AC cable from outlet.

8. Remove USB memory from USB port.

System Version: EXXXXXXX

STATUS

UPDATING...

System Version: EXXXXXXX

100%

STATUS

UPGRADE COMPLETE

System Version: EXXXXXXX

50%

STATUS

UPGRADE FAILURE

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LC-32DH57E-BK

Service Manual

CHAPTER 4. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE

No power supplied (Front LED does not light up). No power-up even if turned on (Front LED light up)

YES Is the power cord connector, AC-IN harness, and PD harness connected to the POWER unit normally?

NO Reconnect the power cord, the AC-IN harness and PD harness cor-

rectly.

YES Is the connection of B to B connector between the POWER unit and the INVERTER unit normal? (P7201-CN7302)

NO Correct connection or the short circuit of a B to B connector nor-

mally. (P7201-CN7302)

YES Are F7001 (3.15A) and F7002 (3.15A) normal? NO Replace F7001 or F7002 and switch on the power again.

If Fuse still blow out, check L7001, L7002, D7104, VA7001, and VA7002.

YES Is DC310V supplied to the primary side capacitor C7114 and C7108, when the power switch is turned on?

NO Check whether there are any abnormalities in a rectification circuit.

(D7104, C7114, C7108, L7101)

YES Is UR12.5V supplied from pin (13) (14) of PD connector (P7202), when the power switch is turned on?

YES (*1) fly to the check item of INV60V.

Is about DC400V supplied to primary side capacitor C7112? NO Check whether there are any abnormalities in a power factor

improvement circuit. (IC7101, Q7103, D7113, D7213)

YES Check whether the PS_ON “H” signal is inputted to the pin (6)

of PD connector (P7202) in the power supply unit.

NO Check whether the PS_ON “H” signal is outputted to pin (10) of PD

connector (P9601) and pin (AC11) of IC3303 (VCT) in the MAIN unit.

YES Check again after remove parts which have trouble or a short circuit. Is UR12.5V supplied from pin (13) (14) of PD connector (P7202)?

NO Is there a part which breaks down on the UR12.5V line or short-cir-

culated?

YES

Check the power control circuit of UR12.5V. (IC7201, T7206, D7217, C7220, C7222, C7228, D7215)

Check again after remove parts which have trouble or a short circuit.

After the power supply is turned on, is INV60V generated in connector P7201 (20-23) pin? (*1)

NO Is connector CN7302 of the INV unit removed, and is INV60V gener-

ated in connector P7201 (20-23) pin?

YES

NO Check the inverter power circuit of INV60V. (D7227, C7221, C7223, T7206, D7220, D7221)

It is failure inside an INV unit. check broken parts or a shorting part. (Q7809, Q7807, Q7811, Q7810, etc.)

Is BU3.3V/D3.3V supplied to pin (5) (6) of RA connector (P3301) in a main unit, and pin (1) (2) of P101 in the R/C unit?

NO Check the power supply circuit of BU3.3V and D3.3V.

(IC9605, IC9607/IC9602, etc.)

YES “No power supplied (Front LED does not light up)”. “No power-up even if turned on (Front LED light up).” Is it OK?

NO Review the former step and check it again.

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Power supply (troubleshooting): A power supply does not come to each main circuit/IC. (1)

The power supply of TUNER (TU1102) does not operate. (IF5V)

Checklist

1) The check of the front page POW-UNIT is completed. ••• UR12.5V is output to PD (P9601) (MAIN-UNIT).

(If UR12.5V is not output, confirm the POW-UNIT again and repair.)

2) Check that STB3.3V is supplied to pin (V24) of IC3303 (included MICON), and the PS_ON signal “H” is output from (AC11) pin within a MAIN

UNIT. (If STB3.3V is not supplied, check IC9605 (BU3.3V-REG), IC9607 (V-DET), and a peripheral circuit.)

3) Refer to attached sheet SYSTEM Block diagram.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is IF5V supplied to pin (3) of TUNER (TU1102)? YES Check the soldering of TUNER (TU1102), confirm I2C-LINE or

exchange it.

Is D5V output from pin (3) of IC9608 (D5V-REG)? YES Check the soldering of Q1105 and TUNER (TU1102).

Is UR12.5V supplied to pin (2) of IC9608 (REG)? NO Check the pin (1) (2) of connector PD (P9601).

YES

Check whether D_POW “H” signal is input to pin (7) of IC9608? YES Check soldering IC9608 (D5V-REG) or exchange it.

Check whether PS-ON “H” signal is input to pin (2) of IC3305? YES Check soldering IC3305 (V-DET) or exchange it.

NO Check whether PS-ON “H” signal is outputted from pin (AC11) of IC3303.

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Power supply (troubleshooting): A power supply does not come to each main circuit/IC. (2)

The power supply of a VIDEO system does not operate. (IC3303) (BU3.3V), (D3.3V), (D1.1V), (CPU1.2V)

Checklist

1) The check of the front page POW-UNIT is completed. ••• UR12.5V is output to PD (P9601) (MAIN-UNIT).

(If UR12.5V is not output, confirm the POW-UNIT again and repair.)

2) Check that STB3.3V is supplied to pin (V24) of IC3303 (included MICON), and the PS_ON signal “H” is output from (AC11) pin within a MAIN

UNIT. (If STB3.3V is not supplied, check IC9605 (BU3.3V-REG), IC9607 (V-DET), and a peripheral circuit.)

3) Refer to attached sheet SYSTEM Block diagram.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is BU3.3V supplied to pin (V24) of IC3303 (VCT)? NO Check whether BU3.3V is outputted from pin (3) of IC9605

(REG).

YES

NO Check whether the voltage detection signal input from IC9607 (VDET) (1) pin to IC9605 (7) pinis.

Is D3.3V, D1.1V, and CPU1.2V supplied to pin (F18) (C6) (K12) of IC3303 (VCT).

NO Are D3.3V, D1.1V, and CPU1.2V output from IC9602 (SW) (1)

pin, IC9604 (REG) (3) pin, and IC9603 (REG) (5) pin?

YES NO Check soldering and the peripheral circuit of IC3303 (VCT). Or please exchange IC3303.

Check whether the D_1.1V signal inputs to IC9602 (SW) (3) pin and D_POW signal inputs to IC9604 (REG) (7) pin or check soldering etc.

Power supply (troubleshooting): A power supply does not come to each main circuit/IC. (3)

The power supply of a AUDIO system does not operate. (IC1302/IC2701) (AMP12.5V, S9V, D3.3V)

Checklist

1) The check of the front page POW-UNIT is completed. ••• UR12.5V is output to PD (P9601) (MAIN-UNIT).

(If UR12.5V is not output, confirm the POW-UNIT again and repair.)

2) Check that STB3.3V is supplied to pin (V24) of IC3303 (included MICON), and the PS_ON signal “H” is output from (AC11) pin within a MAIN

UNIT. (If STB3.3V is not supplied, check IC9605 (BU3.3V-REG), IC9607 (V-DET), and a peripheral circuit.)

3) Refer to attached sheet SYSTEM Block diagram.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is AMP12.5V supplied to pin (1) (10) of IC2701 (A-AMP)? NO Is S12.5V input to pin (3) (4) of PD connector (P9601)?

YES

Check a soldering or contact of a PD connector (P9601).

Is D3.3V supplied to pin (3) of IC1302 (A-SW), and is S9V supplied to pin (10)?

NO Check whether D3.3V is outputted from pin (1) of IC9602 (SW),

and S9V is outputted from pin (5) of IC9610 (REG).

NO Check whetherD1.1V_ON signal is inputted to pin (3) of IC9602 (SW) and pin (3) of IC9610 (REG).

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Power supply (troubleshooting): A power supply does not come to each main circuit/IC. (4)

The power supply of a PANEL system does not operate. (Q9606) (LCD12V)

Checklist

1) The check of the front page POW-UNIT is completed. ••• UR12.5V is output to PD (P9601) (MAIN-UNIT). (If UR12.5V is not output, confirm the POW-UNIT again and repair.)

2) Check that STB3.3V is supplied to pin (V24) of IC3303 (included MICON), and the PS_ON signal “H” is output from (AC11) pin within a MAIN UNIT. (If STB3.3V is not supplied, check IC9605 (BU3.3V-REG), IC9607 (V-DET), and a peripheral circuit.)

3) Refer to attached sheet SYSTEM Block diagram.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line, please.

YES

Is LCD12V supplied to pin (12)-(15) of LP connector (P2604)? YES Replace LCD-CONT-UNIT.

Is LCD12V output from pin (8) of Q9606 (SW)? YES Check the surrounding of LP connector (P2604).

Is UR12.5V input to pin (1) of Q9606 (SW)? NO Check whether UR12.5V is input to pin (1) (2) of PD connector

(P9601).

YES

Is PNL_POW “H” input to pin (4) of Q9606 (SW)? NO Check whether PNL_POW signal outputs “H” from pin (A12) of

IC3303.

YES

Replace Q9606 (SW).

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No sound (1-1) (during the reception of TV broadcasting)

No audio output during UHF/ VHF reception

Checklist:

1) Is the volume set to MIN or MUTE on the remote control? ••• Set the desired volume.

2) Is ANT-CABLE disconnected or connected improperly? ••• Connect it correctly as per the operation manual.

3) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line, please.

(MAIN-UNIT) (MAIN-UNIT) Is the audio signal (AOUT_SP_L/R) output from pins (H26) and (H25) of

IC3303 (VCT)?

NO Is the audio signal (SIF)

input to pins (AB25) of IC3303 (VCT)?

YES Check whether there are a

power supply of IC3303 (VCT), the short circuit, and other abnormalities.

(MAIN-UNIT) YES

Is the audio signal (SPKOUT_L/R) output form pins (17) and (18) of IC1302 (A-SW) normally?

NO Check S9V power supply

(10) (15) pin, D3.3V power supply (3) (36) pin, and AUSW-MUTE signal (29) pin of IC1302 (A-SW) or the peripheral circuits.

Is the SIF signal output from pin (4) of tuner (TU1102)?

YES Check whether there are

open-circuit or short-circuit between tuner (TU1102) and IC3303.

YES NO

Is the audio signal (LCH±/ RCH±) output form pins (31)/(27) and (11)/(14) of IC2701 (A-AMP) normally?

NO Check AMP12.5V power

supply (1) (10) pin, AMPSTBY input signal (17) pin, and audio-mute signal pin (19) of IC2701 (AAMP) or the peripheral circuits.

Check whether IF5V power supply is supplied to pin (3) of tuner (TU1102), and ANT5V power supply is supplied to pin (1) of tuner (TU1102)?

NO Check whether there are

open-circuit or short-circuit between tuner (TU1102) and Q1105 (5VREG) or between tuner and IC1101.

YES YES

Is the audio output signal outputted to pins (1)-(4) of SP-Connector (P2701) normally?

NO Check SP- Connector

(P2701) and peripheral circuits.

Check whether the I2C signal (SDA/SCL) is functioning by (9) (8) pin of tuner (TU1102).

NO Pursue an I2C line and

look for the part of an open circuit or the Short circuit.

YES YES

Is the SP-Wire harness connected and operated orthopedically normally?

NO Correct an abnormal part

of SP- harness.

Check whether IF_AGC is functioning between pins (E24) of IC3303 and pin (15) of tuner (TU1102)

NO Check whether there is an

open circuit or the short circuit in an IF_AGC signal line.

YES YES Check right and left SPBOX, and exchange defec-

tive SP-BOX (R: RSP-ZA392WJZZ/ L: RSP-ZA391WJZZ)

A-BLOCK Replace tuner

(TU1102).

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4 – 6

No sound (1-2) (during the reception of DTV broadcasting)

No audio output during DTV reception

Checklist:

1) Is the volume set to MIN or MUTE on the remote control? ••• Set the desired volume.

2) Is ANT-CABLE disconnected or connected improperly? ••• Connect it correctly as per the operation manual.

3) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line, please.

(MAIN-UNIT) (MAIN-UNIT) (TUNER SIDE) Is the audio signal (AOUT_SP_L/R) output from pins (H26) and (H25) of

IC3303 (VCT)?

NO Is the digital IF signal

(D_IF±) input to pins (T25) (R25) of IC3303 (VCT)?

YES Check whether there

are a power supply of IC3303 (VCT), the short circuit, and other abnormalities.

(MAIN-UNIT) YES (OUTPUT_SIDE)

Is the audio signal (SPKOUT_L/R) output form pins (17) and (18) of IC1302 (A-SW) normally?

NO Check S9V power supply

(10) (15) pin, D3.3V power supply (3) (36) pin, and AUSW-mute signal (29) pin of IC1302 (A-SW) or the peripheral circuits.

Is the digital IF signal (D_IF±) output from pins (17) (16) of tuner (TU1102)?

YES Check whether there

are open-circuit or short-circuit between tuner (TU1102) and IC3303.

YES NO Is the audio signal (LCH±/ RCH±) output form pins (31) (27) and (11) (14) of

IC2701 (A-AMP) properly?

NO Check AMP12.5V power

supply (1) (10) pin, AMPSTBY input signal (17) pin, and audio-mute signal pin (19) of IC2701 (A-AMP) or the peripheral circuits.

Check whether the IF5V power supply is supplied to pin (3) of tuner (TU1102).

NO Check whether there

are open-circuit or short-circuit between Q1105 (5V-REG) and tuner (TU1102).

YES YES Is the audio output signal

outputted to pins (1)-(4) of SP-Connector (P2701) normally?

NO Check SP-Connector

(P2701) and peripheral circuits.

Check whether the I2C signal (SDA/SCL) is functioning by pin (9) (8) of tuner (TU1102).

NO Pursue an I2C line and

look for the part of an open circuit or the Short circuit.

YES YES Is the SP-Wire harness

(SP) connected and operated orthopedically normally?

NO Correct an abnormal part

of SP- harness.

Check whether IF_AGC is functioning between pins (E24) of IC3303 and pin (15) of tuner (TU1102)

NO Check whether there is

an open circuit or the short circuit in an IF_AGC signal line.

YES YES Check right and left SPBOX, and exchange defective SP-BOX

(R: RSP-ZA392WJZZ/ L: RSP-ZA391WJZZ)

A-BLOCK Replace tuner

(TU1102).

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4 – 7

No sound from external input devices (2-1)-1

No sound from EXT1 (SCART1) connecting an external input device.

<EXT1> Is the SC1_IN_L (SCART1-L-IN) audio signal input from pin (6) of SCART1 terminal (SC503) to pin (44) of IC1302 (A-SW)? Is the SC1_IN_R (SCART1-R-IN) audio signal input from pin (2) of SCART1 terminal (SC503) to pin (43) of IC1302 (A-SW)?

NO Check pins (6) (2) of SCART1 and connection of an external

input device.

YES Is the audio signal (A_IN_L/R) properly output from pins (6) and (7) of IC1302 (A-SW)?

NO Check S9V power supply (10) (15) pin, D3.3V power supply (3)

(36) pin, and SDA0/SCL0 signal (28) (27) pin of IC1302 (A-SW) or the peripheral circuit.

YES Is the audio signal (A_OUT_SP_L/R) properly output from pins (H26) and (H24) of IC3303 (VCT)?

NO Check D3.3V power supply pin (F18) of IC3303 (VCT) and the

soldering confirmation or the peripheral circuit.

YES It is the same as the above-mentioned A-BLOCK.

No sound from external input devices (2-1)-2

No sound from EXT2 (SCART2) connecting an external input device.

<EXT2> Is the SC2_IN_L (SCART2-L-IN) audio signal input from pin (6) of SCART2 terminal (SC502) to pin (46) of IC1302 (A-SW)? Is the SC2_IN_R (SCART2-R-IN) audio signal input from pin (2) of SCART2 terminal (SC502) to pin (45) of IC1302 (A-SW)?

NO Check pins (6) (2) of SCART2 and connection of an external

input device.

YES Is the audio signal (A_IN_L/R) properly output from pins (6) and (7) of IC1302 (A-SW)?

NO Check S9V power supply (10) (15) pin, D3.3V power supply (3)

(36) pin, and SDA0/SCL0 signal (28) (27) pin of IC1302 (A-SW) or the peripheral circuit.

YES Is the audio signal (A_OUT_SP_L/R) properly output from pins

(H26) and (H24) of IC3303 (VCT)?

NO Check D3.3V power supply pin (F18) of IC3303 (VCT) and the

soldering confirmation or the peripheral circuit.

YES It is the same as the above-mentioned A-BLOCK.

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4 – 8

No sound from external input devices (2-2)-1

No sound from EXT3 (COMP-A-IN) connecting an external input device.

<EXT3> Is COMP_IN_L audio signal input to pin (2) of EXT3_AUDIO (J502)? Is COMP_IN_R audio signal input to pin (4) of EXT3_AUDIO (J502)?

YES Is COMP_IN_L audio signal input to pin (48) of IC1302 (A-SW)? Is COMP_IN_R audio signal input to pin (47) of IC1302 (A-SW)?

YES Is the audio signal (A_IN_L/R) properly output from pins (6) and

(7) of IC1302 (A-SW)?

NO Check S9V power supply (10) (15) pin, D3.3V power supply (3)

(36) pin, and SDA0/SCL0 signal pin (28) (27) of IC1302 (A-SW) or the peripheral circuit.

YES Is the audio signal (A_OUT_SP_L/R) properly output from pins (H26) and (H25) of IC3303 (VCT)?

NO Check D3.3V power supply pin (F18) of IC3303 (VCT) and the

soldering confirmation or the peripheral circuit.

YES It is the same as the above-mentioned A-BLOCK.

No sound from external input devices (2-2) -2

No sound from EXT4 (PC/HDMI-A-IN) connecting an external input device.

<EXT4> Is PC/HDMI-L audio signal input to pin (2) of EXT4 (J501)? Is PC/HDMI-R audio signal input to pin (3) of EXT4 (J501)?

YES Is PC/HDMI-L audio signal input to pin (50) of IC1302 (A-SW)?

Is PC/HDMI-R audio signal input to pin (49) of IC1302 (A-SW)?

YES Is the audio signal (A_IN_L/R) properly output from pins (6) and (7) of IC1302 (A-SW)?

NO Check S9V power supply (10) (15) pin, D3.3V power supply (3)

(36) pin, and SDA0/SCL0 signal pin (28) (27) of IC1302 (A-SW) or the peripheral circuit.

YES Is the audio signal (A_OUT_SP_L/R) properly output from pins (H26) and (H25) of IC3303 (VCT)?

NO Check D3.3V power supply pin (F18) of IC3303 (VCT) and the

soldering confirmation or the peripheral circuit.

YES It is the same as the above-mentioned A-BLOCK.

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4 – 9

No sound from external input devices (2-2)-3

No sound from EXT8 (CVBS-A-IN) connecting an external input device.

<EXT8> Is CVBS-L audio signal input to pin (5) of EXT8 (J505)? Is CVBS-R audio signal input to pin (4) of EXT8 (J505)?

YES Is CVBS-L audio signal input to pin (52) of IC1302 (A-SW)? Is CVBS-R audio signal input to pin (51) of IC1302 (A-SW)?

YES Is the audio signal (A_IN_L/R) properly output from pins (6) and (7) of IC1302 (A-SW)?

NO Check S9V power supply (10) (15) pin, D3.3V power supply (3)

(36) pin, and SDA0/SCL0 signal pin (28) (27) of IC1302 (A-SW) or the peripheral circuit.

YES Is the audio signal (A_OUT_SP_L/R) properly output from pins

(H26) and (H25) of IC3303 (VCT)?

NO Check D3.3V power supply pin (F18) of IC3303 (VCT) and the

soldering confirmation or the peripheral circuit.

YES It is the same as the above-mentioned A-BLOCK.

No sound of external device (3-1)-1

No audio output from EXT1 (SCART1) terminal.

Checklist:

1) Is the MUTE button on the remote control set to ON? ••• Set to OFF.

2) Check the connection to external devices. •••Is there any improper connection?

Is audio signal output to pins (3) and (1) of EXT1 (SCART1) (SC503)?

YES Check EXT1 (SCART1) (SC503) and the connection to an exter-

nal device.

Is the SC1-MUTE signal of base (5) (2) pin of Q502 “H”? YES The Q502 base should usually be “L”.

If it is “H” signal, Check whether base of Q1301 is “L” or peripheral circuit.

NO Is the audio output signal (TUNER_OUT_L/R) output from pins (11) and (10) of IC1301 (DAC) normal?

YES Check whether there are problems in IC1301 and Q502 or

peripheral circuits.

NO Is the audio output signal (I2S_DATA_TU) output from pins (B25) of IC3303 (VCT) normal?

YES Check whether there is problem in IC3303.

NO The input source of the audio is decided from TUNER. Is the SIF

signal input to pin (AB25) of IC3303 (VCT)?

YES Check whether there are problems in the power supply and sol-

dering IC3303 or peripheral circuits.

NO TUNER: TU1102 Check Q1101 (AMP), and pin (4) of TUNER.

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4 – 10

No sound of external device (3-1)-2

No audio output from EXT2 (SCART2) terminal.

Checklist:

1) Is the MUTE button on the remote control set to ON? •••• Set to OFF.

2) Check the connection to external devices. ••• Is there any improper connection?

Is audio signal output to pins (3) and (1) of EXT2 (SCART2) (SC502)?

YES Check EXT2 (SCART2) (SC502) and the connection to an exter-

nal device.

NO Is the SC2-MUTE signal of base (5) (2) pin of Q501 “H”? NO The Q501 base should usually be “L”.

If it is “H” signal, Check whether base of Q1301 is “L” or peripheral circuit.

YES Is the audio output signal (MONITOR_OUT_L/R) output from pins (19) and (20) of IC1302 (A-SW) normally?

YES Check whether there are problems in IC1302, Q503, Q504 and

Q501 or peripheral circuits.

Isn't there problem in the power supply input (S9V, D3.3V) of IC1302 (A-SW), I2C_0 signal (SDA0/SCL0), and defective soldering, etc.?

NO Repair the faulty point around IC1302.

YES Where is the input source of the sound from? (EXT1, EXT2, EXT3, EXT4, EXT8)

Check whether there is any problem in each input (terminal). EXT1/2: SCART1/2

Check pin (44) (43)/(46) (45) of IC1302 and pin (6) (2) of EXT1/2 terminal (SCART1/2).

EXT3: COMP Check pin (48) (47) of IC1302, and pin (2) (4) of EXT3 terminal (J502).

EXT4: PC/HDMI Check pin (50) (49) of IC1302, and pin (2) (3) of EXT4 terminal (J501).

EXT8: CVBS Check pin (52) (51) of IC1302, and pin (5) (4) of EXT8 terminal (J505).

Page 37

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4 – 11

No sound of external device (3-2)

No sound from AUDIO OUT (J506). (MONITOR OUT)

Is the audio output signal send to pins (2) and (4) of the AUDIO OUT terminal (J506)?

YES Check AUDIO OUT terminal (J506) and the connection to an

external device.

Is the AUDIO-MUTE “L” signal input to pins (5) and (2) of Q509 base?

NO The Q1301 base should usually be “H”. If it is “L” signal, Check

pin (35) of IC1302, pin (1) of IC1303, and soldering.

YES Is the audio output signal (MONITOR_OUT_L/R) output from pins (19) and (20) of IC1302 (A-SW) normally?

YES Check the power supply input (S9V, D3.3V), soldering, and the

peripheral circuit of IC1302 (A-SW).

Isn't there problem in the power supply input (S9V, D3.3V) of IC1302 (A-SW), I2C_0 signal (SDA0/SCL0), and defective soldering, etc.?

NO Repair the faulty point around IC1302.

YES Where is the input source of the sound from? (TUNER, EXT1, EXT1, EXT3, EXT4, EXT8)

Check whether there is any problem in each input (terminal). TU1102: TUNER

Check pin (AB25) of IC3303, and pin (4) of TUNER.

EXT1/2: SCART1/2 Check pin (44) (43)/(46) (45) of IC1302 and pin (6) (2) of EXT1/2 terminal (SCART1/2).

EXT3: COMP_L/R Check pin (48) (47) of IC1302, and pin (2) (4) of EXT3 terminal (J502).

EXT4: PC/HDMI_L/R Check pin (50) (49) of IC1302, and pin (2) (4) of EXT4 terminal (J501)

EXT8: CVBS_L/R Check pin (52) (51) of IC1302, and pin (5) (4) of EXT8 terminal (J505).

Page 38

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4 – 12

No sound of external device (3-3)

No DIGITAL sound from OPT OUT (D520).

Is the DIGITAL audio signal output to pin (1) of the OPT OUT terminal (D520)?

YES Check OPT OUT terminal (D520) and the connection to an exter-

nal device.

Is the DIGITAL audio signal (OPT_ OUT) output from pin (4) of IC503?

YES Check whether it is normal between an OPT OUT terminal

(D520) and IC503.

NO Isn't the AUDIO_MUTE signal inputted into pin (1) of IC503 by “L”?

YES The pin (1) of IC503 should usually be “H”. If it is “L” signal,

check Q505, pin (1) of Q1301 and pin (35) of IC1302.

NO Is the DIGITAL audio signal (OPT_ OUT) output from pin (E26) of

IC3303 (VCT) normally?

YES Check whether it is normal between IC503 and IC3303.

NO Isn't there problem in the power supply input (D3.3V, D1.1V) of IC3303 (VCT), I2C_0 signal (SDA0/SCL0), and defective soldering, etc.?

NO Repair the faulty point around IC3303.

YES

Where is the input source of the sound from? (TUNER, EXT5, EXT6, EXT7)

Check whether there is any problem in each input (terminal). TU1102: TUNER

Check pin (T25) (R25) of IC3303, and pin (16) (17) of TUNER.

EXT5: HDMI_1 Check the TMDS input signal of HDMI_1 (1) (9) pin, the TMDS I/ O signal of IC1508, and the TMDS input signal of IC3303.

EXT6: HDMI_2 Check the TMDS input signal of HDMI_2 (1) (9) pin, the TMDS I/ O signal of IC1508, and the TMDS input signal of IC3303.

EXT7: HDMI_3 Check the TMDS input signal of HDMI_3 (1) (9) pin, the TMDS I/ O signal of IC1508, and the TMDS input signal of IC3303.

Page 39

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<When tuner (U/V, DTV) is received> No picture on the display (1)-1

No picture appears on LCD during the tuner (U/V) reception.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “TV” with the INPUT SOURCE button on the remote

control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Is ANT-CABLE disconnected or connected improperly? ••• Connect it correctly as per the operation manual.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

YES

Is the level of pins (9) and (8) of tuner (TU1102) at “H”? NO These are communications lines for control (I2C). Follow the

path and check whether they are forced to L (PULL_DOWN). (IC3303 (F25) (F24) pin)

YES Is the video signal (VIDEO) output from pin (6) of tuner (TU1102)?

NO Check the tuner (TU1102) and peripheral circuits.

YES Is the video signal (TUNER_CVBS) input to pin (AD25) of lC3303

(VCT)?

NO Isn't there any part with short-circuits at IC3303 (VCT)? or Check

peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) output from pin [A6:A11], [B6:B11] of lC3303 (VCT)?

NO Check IC3303 (VCT), and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (3)/(4) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

NO Check the contact of the LCD-CONT-UNIT connection harness

(CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

Page 40

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4 – 14

<When tuner (U/V, DTV) is received> No picture on the display (1)-2

No picture appears on LCD during the tuner (DTV) reception.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “TV” with the INPUT SOURCE button on the remote

control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Is ANT-CABLE disconnected or connected improperly? ••• Connect it correctly as per the operation manual.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

YES Is the level of pins (9) and (8) of tuner (TU1102) at “H”? NO These are communications lines for control (I2C). Follow the

path and check whether they are forced to L(PULL_DOWN). (IC3303 (F25) (F24) pin)

YES Is the digital video signal (DIFP/N) output from pin (16) (17) of tuner (TU1102)?

NO Check the tuner (TU1102) and peripheral circuits.

YES Is the digital video signal (DIFP/N) input to pin (T25) (R25) of

lC3303 (VCT)?

NO Isn't there any part with short-circuits at IC3303 (VCT)? or Check

peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) output from pin [A6:A11], [B6:B11] of lC3303 (VCT)?

NO Check IC3303 (VCT), and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (3)/(4) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

NO Check the contact of the LCD-CONT-UNIT connection harness

(CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

Page 41

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4 – 15

<When EXT1 is used for external input> No picture on the display (2)-1

No Composite video output when the EXT1 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT1” with the INPUT SOURCE button on the remote

control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device •••Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the CVBS video signal (SC1_CVBS/Y) sent to pin (20) of SCART1 (SC503)?

NO Check external connection, input setting, SCART1 (SC503) and

peripheral circuits.

YES Is the CVBS video signal (SC1_CVBS/Y) sent to input terminal pin (AE24) of IC3303 (VCT)?

NO IC3303 (VCT), I2C_0signal (SDA0/SCL0), and peripheral cir-

cuits.

YES Is the LVDS video signal (LVDS0_D [0:4]±) input to pins (40)-(28) of LW Connector (P2601), and is CLK signal (TCLK±) input to

pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

Page 42

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4 – 16

<When EXT1 is used for external input> No picture on the display (2)-2

No RGB output when the EXT1 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT1” with the INPUT SOURCE button on the remote

control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device •••Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the RGB signal sent to pins (15), (11) and (7) of SCART1 (SC503)? (RED1, GREEN1, BLUE1)

NO Check external connection, input setting, SCART1 (SC503) and

peripheral circuits.

Is the RGB signal (RED1, GREEN1, BLUE1) sent to input terminal pins (AF24), (AD24) and (AD23) of IC3303 (VCT)?

NO Check between pins (15) (11) (7) of SCART1 (SC503) and pins

(AF24) (AD24) (AD23) of IC3303 (VCT) and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When EXT1 is used for external input> No picture on the display (2)-3

No Y/C output when the EXT1 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT1” with the INPUT SOURCE button on the remote

control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device •••Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the Y/C signal sent to pins (20) and (15) of SCART1 (SC503)? (Y/C1)

NO Check external connection, input setting, SCART1 (SC503) and

peripheral circuits.

YES Is the Y/C signal (Y/C1) sent to input terminal pins (AE24) and

(AF24) of IC3303 (VCT)?

NO Check between pins (20) (15) of SCART1 (SC503) and pins

(AE24) (AF24) of IC3303 (VCT), and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604),

and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When EXT2 is used for external input> No picture on the display (3)-1

No composite video output when the EXT2 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT2” with the INPUT SOURCE button on the remote con-

trol.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the CVBS video signal sent to pin (20) of SCART2 (SC502)? NO Check external connection, input setting, SCART2 (SC502) and

peripheral circuits.

YES Is the CVBS video signal (SC2_CVBS/Y) sent to input terminal

pin (AD26) of IC3303 (VCT)?

NO Check IC3303 (VCT), I2C_0 signal (SDA0/SCL0), and peripheral

circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

Page 45

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<When EXT2 is used for external input> No picture on the display (3)-2

No Y/C output when the EXT2 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT2” with the INPUT SOURCE button on the remote con-

trol.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the Y/C signal sent to pins (20) and (15) of SCART2 (SC502)? (SC2_Y/C2)

NO Check external connection, input setting, SCART2 (SC502) and

peripheral circuits.

YES Is the Y/C signal (SC2_Y/C2) sent to input terminal pins (AD26)

and (AF25) of IC3303 (VCT)?

NO Check between pins (20) (15) of SCART2 (SC502) and pins

(AD26) (AF25) of IC3303 (VCT) and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604),

and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When EXT3/4/8 is used for external input> No picture on the display (4)-1

No Component video output when the EXT3 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT3”/”EXT4”/”EXT8” with the INPUT SOURCE button on

the remote control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the component video signal sent to pin (3) (5) (7) of EXT3 terminal (J503)? (Y, Pb, Pr)

NO Check external connection, input setting, EXT3 terminal (J503)

and peripheral circuits.

YES Is the component video signal (COMP_Y/Pb/Pr) sent to input terminal pin (AE21) (AD22) (AF22) of IC3303 (VCT)?

NO Check between pins (3) (5) (7) of EXT3 terminal (J503) and pins

(AE21) (AD22) (AF22) of IC3303 (VCT) and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

Page 47

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4 – 21

<When EXT3/4/8 is used for external input> No picture on the display (4)-2

No PC output when the EXT4 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT3”/”EXT4”/”EXT8” with the INPUT SOURCE button on

the remote control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the RGB signal sent to pins (1), (2) and (3) of EXT4 terminal (PC_IN) (SC501)? (PC_R/G/B)

NO Check external connection, input setting, EXT4 terminal (PC_IN)

(SC501) and peripheral circuits.

YES Is the RGB signal (PC_R/G/B) sent to input terminal pins (AE20)

(AE19) and (AD19) of IC3303 (VCT)?

NO Check between pins (1) (2) (3) of EXT4 terminal (PC_IN)

(SC501) and pins (AE20) (AE19) (AD19) of IC3303 (VCT).

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604),

and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When EXT3/4/8 is used for external input> No picture on the display (4)-3

No Composite video output when the EXT8 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT3”/”EXT4”/”EXT8” with the INPUT SOURCE button on

the remote control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the Composite video signal sent to pin (6) of EXT8 terminal (J505)? (CVBS_IN)

NO Check external connection, input setting, EXT8 terminal (J505)

and peripheral circuits.

YES Is the Composite video signal (CVBS_IN) sent to input terminal pin (AC24) of IC3303 (VCT)?

NO Check between pin (6) of EXT8 terminal (J505) and pin (AC24)

of IC3303 (VCT) and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When EXT5/6/7(HDMI) is used for external input> No picture on the display (5)-1

No HDMI0 digital video output when the EXT5 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT5”/”EXT6”/”EXT7” with the INPUT SOURCE button on

the remote control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the HDMI Digital video signal sent to pin (1)-(9) of EXT5 terminal (SC1501)? (HDMI0_D [0:2] _P/N)

NO Check external connection, input setting, EXT5 terminal

(SC1501) and peripheral circuits.

YES Is the HDMI Digital video signal sent to pin (21)-(26) of IC1508 (HDMI-receiver)? (HDMI0_D [0:2] _P/N)

NO Check short circuit of EXT5 terminal (SC1501), and peripheral

circuits.

YES Is HDMI_SW_ Digital Video signal sent to pin (AF16) (AE16)-

(AF18) (AE18) of input terminal of IC3303 (VCT)? (HDMI_SW_D [0:2] P/N)

NO Check short circuit of IC1508 (HDMI_receiver), power source

and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When EXT5/6/7(HDMI) is used for external input> No picture on the display (5)-2

No HDMI1 digital video output when the EXT6 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT5”/”EXT6”/”EXT7” with the INPUT SOURCE button on

the remote control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the HDMI Digital video signal sent to pin (1)-(9) of EXT6 terminal (SC1502)? (HDMI1_D [0:2] _P/N)

NO Check external connection, input setting, EXT6 terminal

(SC1502) and peripheral circuits.

YES Is the HDMI Digital video signal sent to pin (13)-(18) of IC1508 (HDMI-receiver)? (HDMI1_D [0:2] _P/N)

NO Check short circuit of EXT6 terminal (SC1502), and peripheral

circuits.

YES Is HDMI_SW_ Digital Video signal sent to pin (AF16) (AE16)-

(AF18) (AE18) of input terminal of IC3303 (VCT)? (HDMI_SW_D [0:2] P/N)

NO Check short circuit of IC1508 (HDMI_receiver), power source

and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input

to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604), and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When EXT5/6/7 (HDMI) is used for external input> No picture on the display (5)-3

No HDMI2 digital video output when the EXT7 external input is used.

Checklist:

1) Is “INPUT SOURCE” button on the remote control set up correctly? ••• set it as “EXT5”/”EXT6”/”EXT7” with the INPUT SOURCE button on

the remote control.

2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? ••• Set it to an appropriate level.

3) Check the connection to the external device ••• Connect it correctly as per the operation manual for the device.

4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line,

please.

Is the HDMI Digital video signal sent to pin (1)-(9) of EXT7 terminal (SC1503)? (HDMI2_D [0:2] _P/N)

NO Check external connection, input setting, EXT7 terminal

(SC1503) and peripheral circuits.

YES Is the HDMI Digital video signal sent to pin (3)-(8) of IC1508 (HDMI-receiver)? (HDMI2_D [0:2] _P/N)

NO Check short circuit of EXT7 terminal (SC1503), and peripheral

circuits.

YES Is HDMI_SW_ Digital Video signal sent to pin (AF16) (AE16)(AF18) (AE18) of input terminal of IC3303 (VCT)?

(HDMI_SW_D [0:2] P/N)

NO Check short circuit of IC1508 (HDMI_receiver), power source

and peripheral circuits.

YES Is the LVDS video signal (LVDS0_D [0:4] ±) input to pins (40)- (28) of LW Connector (P2601), and is CLK signal (TCLK±) input to pins (32)/(33)?

NO Check whether there is short circuit between [A6:A11], [B6:B11]

pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), and peripheral circuits.

YES Is the LCD12V input to (12)-(15) pin of LP Connector (P2604),

and is the I2C signal (VCOM_SDA/SCL) input to (13)/(12) pin?

NO Check Q9606 (SW) for the LCD12V, and check IC2601 for the

I2C signal.

YES Exchange LCD-CONT-UNIT and do it operate normally?

Check the contact of the LCD-CONT-UNIT connection harness (CN3/4). Exchange LCD-PANEL if it is useless even if it exchanges it.

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<When an external monitor is connected> No picture on the external monitor (6)-1

No picture appears on external monitor during the tuner (U/V) reception. (Tuner input, EXT1 output)

Checklist:

1) Are input terminal on back of TV and “INPUT SOURCE” button on the remote control set up correctly? ••• See the operation manual and

set “INPUT SOURCE “appropriately. set to EXT***.

2) Is SCART-CABLE disconnected or connected improperly? ••• Connect it correctly as per the operation manual.

Is the video signal outputted to pin (19) of SCART1 (SC503)? YES Check SCART1, external connection or input setting.

NO Is the video signal (SC1-VOUT) outputted from pin (2) of IC504 (75Ω_driver)?

YES Check SCART1 (SC503) and peripheral circuits.

NO Is video signal (CVBS_TU_OUT) input to pin (4) of IC507? YES Check IC507 and peripheral circuits.

NO Is video signal (TUNER_CVBS) outputted from emitter of Q1102?

YES Check IC3303 and peripheral circuits.

NO Is video signal (VIDEO) outputted from pin (6) of TUNER (TU1102)?

NO Check IF5V power supply pins (3), 12C-line pins (9) and (8) of

tuner (TU1102) and peripheral circuits.

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<When an external monitor is connected> No picture on the external monitor (6)-2

No picture appears on external monitor during the EXT8 input (COMPOSITE). (EXT8 COMP input, EXT2 output)

Checklist:

1) Are input terminal on back of TV and “INPUT SOURCE” button on the remote control set up correctly? ••• See the operation manual and

set “INPUT SOURCE” appropriately. set to EXT***.

2) Is SCART-CABLE disconnected or connected improperly? ••• Connect it correctly as per the operation manual.

Is the video signal outputted to pin (19) of SCART2 (SC502)? YES Check SCART2, external connection or input setting.

NO Is the video signal (SC2-VOUT) outputted from pin (4) of IC508

(75Ω_driver)?

YES Check IC508 and peripheral circuits.

NO Is the Composite Video signal (CVBS_MON_OUT) outputted from the pin (B13) of IC3303 (VCT)?

YES Check between IC508 and IC3303 and the peripheral circuitry.

NO Is the Composite signal (CVBS_IN) inputted to pins (6) of EXT8 terminal normally?

YES Check a short circuit etc. between the EXT8 input terminal (pin

(6)) and IC3303 (VCT).

NO Check whether the terminal of EXT8 is faulty, or there is not any

error in external connection.

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<When an external monitor is connected> No picture on the external monitor (6)-3

No picture appears on external monitor during the EXT5/6/7 inputs (HDMI). (EXT5 HDMI input, EXT2 output)

Checklist:

1) Are input terminal on back of TV and “INPUT SOURCE” button on the remote control set up correctly? ••• See the operation manual and

set “INPUT SOURCE” appropriately. set to EXT***.

2) Is SCART-CABLE disconnected or connected improperly? ••• Connect it correctly as per the operation manual.

Is the video signal outputted to pin (19) of SCART2 (SC502)? YES Check SCART2, external connection or input setting.

NO Is the video signal (SC2-VOUT) outputted from pin (4) of IC508 (75Ω_driver)?

YES Check IC508 and peripheral circuits.

NO Is the Composite Video signal (CVBS_MON_OUT) outputted from the pin (B13) of IC3303 (VCT)?

YES Check between IC508 and IC3303 and the peripheral circuitry.

NO Is the HDMI output signal (HDMI_SW_D [0:2] P/N) input to the pin [AF16-AE18] of IC3303 (VCT) normally?

YES Check a short circuit, HDMI_H/V signal, HDMI_PLG signal, and

other abnormality, etc. with IC3303.

NO Is the HDMI input signal (HDMI0/1/2_D [0:2] P/N) input to IC1508 (HDMI-receiver) normally?

YES Check a short circuit, HDMI_I2C signal, and other abnormality,

etc. with IC1508.

NO Are the pin (43) (44)/(39) (40)/(33) (34) of I2C signal (HDMI [0:2]

_SDA/SCL) accessed normally?

NO Exchange HDMI-Receiver (IC1508) Or check short circuit.

YES Is the TMDS signal (1-12) pin inputted to HDMI1/2/3 (EXT5/6/7) terminal normally?

YES Check a short circuit etc. between HDMI1/2/3 and IC1508

(HDMI-receiver).

NO Check whether the terminal of HDMI1/2/3 (EXT5/6/7) is faulty, or there is not any error in external connection.

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The backlight does not light up.

Do all the fluorescent tubes light up? YES Check each fluorescent tube and exchange defective fluorescent

tubes.

NO Is 60V supplied to Connector (CN7302) (20-23) pin? NO Refer to troubleshooting “No power supply (Front LED does not

light up)” of a power supply. Or check a peripheral circuit. (Q7809, Q7807, Q7811, Q7810)

YES

Is UR12.5V supplied to Connector (CN7302) (10)pin? NO Refer to troubleshooting “No power supply” (Front LED does not

light up) of a power supply. Or check a peripheral circuit.

YES

Is UR12.5V supplied to (26) pin of IC7700 (INV-CTL)? NO Check UR12.5V-line in an INVERTER unit.

YES Is the STB-ON/OFF signal supplied to (16) pin (or (4) pin of a connector (CN7302)) of IC7700 (INV-CTL)?

NO Check the STB-ON/OFF signal-line in an INVERTER unit.

YES Is each control signal coming to the connector in INV-UNIT

(CN7302)?

• ADIM (Tube current setting): (1pin)

• OFL (PWM light control signal input): (2pin)

• ERR (Lamp error output): (3pin)

• BRT (Light control method identificatio): (5pin)

NO Check each control circuit.

ADIM-H: Tube current 12mA, L: Tube current 8.5mA OFL -H: Lamp ON, L: Lamp OFF ERR -H: Normal, L: Error REG2-H: External PWM input, L: Analog voltage input

YES Is [0] displayed as the number of [LAMP_ERROR] in the process mode?

NO Reset the number of [LAMP_ERROR] to the default value in the

process mode.

YES Is the drive output signal sent from PIN (31) and (32) of IC7700

(INV-CTL)?

NO Check IC7700 (INV-CTL) and the peripheral circuits.

YES Does the drive output circuit normally work? (Q7800-Q7806) (Q7809, Q7807, Q7811, Q7810)

NO Check which parts are defective.

And exchange the non-conforming articles.

YES Is the circuit by the side of secondary operating normally?

(T7903-T7905)

NO Check defective parts and exchange the inferior products.

YES Is the circuit by the side of secondary operating normally? (D7900-D7905) (D7919/D7921/D7923/D7925/D7927/D7929)

NO Check defective parts and exchange the inferior products.

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LCD failure (1)

Does a single or several vertical stripes appear on the LCD screen?

Does a single or several horizontal stripes appear on the LCD screen?

Do luminescent or black dots appear on the screen?

Is the on-screen image rippling or distorted?

Is there any portion which some screens were darkish or became whitish?

Replace the LCD panel.

LCD failure (2)

The backlight functions. Does not the image come out in the LCD screen (screen black)?

Does the entire LCD screen look whitish all over?

Does the QS drive function?

Are the data bit dropout? (No solution even when turning on and off the QS drive)

Is the gamma correction as specified?

Replace the LCD_CONT_UNIT.

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LC-32DH57E-BK

Service Manual

CHAPTER 5. MAJOR IC INFOMATIONS

[1] MAJOR IC INFOMATIONS

1. DESCRIPTION OF MAJOR ICs

Ref No. Name Part Code Description

Drawing

No.

[MAIN UNIT] IC1301 VHiAK4341ED-1Y DAC AK4341 is 24 bits DAC of 2Vrms output. A newly developed advanced

multiple bit system is adopted in the modulator. In this model, this IC is used to use the audio signal from a digital tuner as an audio output signal of SCART1.

1/10

IC1302 VHiMT8292N+-1Q Audio multiplexer The MediaTek MT8292 introduces the advantages of an input multi-

plexer, the headphone driver and the PGA outputs. The analog input pins can either independently support GPIO function or provide extra GPIO pins to use. The analog input pins can either independently support GPIO function or provide extra GPIO pins to use.

1/10

IC1303 VHiS80944NM-1Y Voltage detector with built-

in delay circuit

This IC is a highly precision voltage detector (4.4V) with built-in delay circuit. In this model, It used as voltage detector of MUTE signal.

1/10

IC501 VHi2BR24C21F-1Y

for service (RH-iXC206WJQZS)

1K E2PROM This IC is a 1Kbit-2-wire (I2C bus type) serial EEPROM that can be

programmed electrically. The EEPROM chip stores the EDID data of PC input. This data is controlled through I2C signals.

2/10

IC506 VHiM3221EiP-1Y RS232C-DRIVER The MAX3221E is a single driver, single receiver RS-232 solution

operating from a single Vcc supply. The RS-232 pins provide IEC G1000-4-2 ESD Protection. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3V to 5.5V supply.

2/10

IC1508 VHiSii91873-1Q HDMI_Port _Processor The SiI91873 HDMI port processor is the second generation of HDMI

devices that support revision 1.3 of the HDMI specification. The main feature is as follows.

1) 4-input, 1-output HDMI port processor.

2) Integrated TMDS receiver and transmitter cores capable of receiving and transmitting at 2.25Gbps.

3) Supports video resolutions up to 1080p, 60Hz, 12bit or 720p/1080i, 120Hz,12bit.

4) Receiver fully comply with DVI1.0, HDCP1.1 and HDMI1.3 specifications.

3/10

IC3302 VHiBD6538G+-1Y USB high side SW BD6538G is single channel high side powers switch with low ON resis-

tance Nch power MOSFET. Rich safety functions such as over current detection, Thermal shutdown (TSD), under voltage lock out (UVLO) and soft start function which are required for the power supply port protection are integrated into 1chip.

4/10

IC3303 RH-iXC758WJQZQ VCT & Main CPU This IC is Video Processor & MAIN CPU.

In this IC, the decode processing and the video signal processing are done. Moreover, OSD is generated here and added to a picture signal.

4/10

IC3304 VHiS80928NM-1Y Voltage detector with built-

in delay circuit

This IC is a highly precision voltage detector (2.8V) with built-in delay circuit. In this model, It uses as RESET signal of IC3303.

4/10

IC3305 VHiS80920NM-1Y Voltage detector with built-

in delay circuit

This IC is a highly precision voltage detector (2.0V) with built-in delay circuit. In this model, It used as a D-POW signal generator.

4/10

IC3501/2 RH-iXC505WJQZQ 512Mb-DDR2-SDRAM This IC is 512Mb DDR2 SDRAM.

This IC operates as a memory of IC3303 (Video Processor). ***

5/10

IC8403 RH-iXC788WJN2Y 2Mb-FLASH This IC is 2Mbit CMOS 3.0 Volt Flash Memory with 50-MHz SPI

(Serial Peripheral Interface) Bus and Small Sector for Boot and Parameter Storage.

6/10

IC8401 RH-iXC721WJQZQ 512Mb-NAND-FLASH This IC is 512Mb NAND flash memory.

This IC stores the software data that processes the system of TV such as the graphic processing, the LCD controls, and backlights etc.

6/10

IC8455 VHiBR24S64F-1Y I2C bus type-64K

E2PROM

The BR24S64F is a 64Kbit-2-wire (I2C bus type) serial EEPROM that can be programmed electrically. This IC stores the menu data and the adjustment value data of adjustment process mode etc. The data is given out by commands from the main microprocessor.

6/10

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IC4402 VHiAOZ1320C-1Y SMART LOAD SW The AOZ1320 is a P-channel high-side load switch with controlled

slew rate. AOZ1320-04 have a slew rate of 1ms.

7/10

IC4401 VHiMT8295AE-1Q IC Controller This is a control IC for PCMCIA cards. This controls information on IC

cards inserted into the PCMCIA card slot (SC4401) or information on software version upgrade cards saved on flash memories to transfer the data to CPUs and memories.

7/10

IC2701 VHiYDA148QZ-1Y A-AMP This IC is a digital audio power amplifier. It is mounted by 32QFN

small package with 15W or less stereo. it drives by 10W in 26, and 32 types.

9/10

IC9605 VHiLV5893M+-1Y 1CH-SW-REG

BU3.3V-REG

LV5893M is 1.8A 1ch step down switching regulator. In this model, it generate BU3.3V.

10/10

IC9608 VHiLV5893M+-1Y 1CH-SW-REG

D5V-REG

LV5893M is 1.8A 1ch step down switching regulator. In this model, it generate D5V.

10/10

IC9606 VHiLV5805M+-1Y 1CH-SW-REG

D1.8V-REG

LV5805M is 2A 1ch step down switching regulator. In this model, it generate D1.8V.

10/10

IC9611 VHiTCR5SB25-1Y 1CH-SW-REG

2.5V-REG

The TCR5SB25 is CMOS general-purpose single-output voltage regulators with an on/off control input, featuring low dropout voltage and low quiescent bias current. The output current is possible up to 200mA or less. In this model, it generate CPU2.5V.

10/10

IC9604 VHiLV58072M-1Y 1CH-SW-REG

D1.1V-REG

LV58072M is 3A 1ch step down switching regulator. In this model, it generate D1.1V.

10/10

IC9607 VHiS80944NM-1Y Voltage detector with built-

in delay circuit

This IC is a highly precision voltage detector with built-in delay circuit. In this model, It used as enable signal of BU3.3V_REG.

10/10

IC2601 IC9601

VHiHC2G66DP-1Y Bilateral Switch This IC is provides a dual analog switch. Each switch has two pins for

input or output and an active HIGH enable input.

8/10

10/10 [POWER UNIT] IC7201 VHiSTRY64761E SWING-P-CTL This product is hybrid IC for the pseudoresonant switching power sup-

ply with built-in power MOSFET and multifunctional control IC. Highly effective and the low noise are achieved by a pseudoresonance and the bottoms ticket operation at the normal operation, and low power consumption is achieved at the standby by the thing that intermittent oscillates.

IC7101 VHiNCP1606B-1Y Power Factor Controller The NCP1606 is an active power factor controller specifically

designed for use as a pre-converter in electronic ballasts, ac-dc adapt-

ers and other medium power off line converters. [INVERTER UNIT] IC7700 VHiBD9897FS-1Y DC/AC-CONVERTER BD9897FS is IC for DC-AC inverter control. Functions of soft start cir-

cuit, timer latch circuit, and under voltage lock output circuit (UVLO),

etc. are built into this IC.

Ref No. Name Part Code Description

Drawing

No.

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2. Detailed ICs Information

2.1. IC1301 (VHiAK4341ED-1Y)

2.1.1 Block Diagram

2.1.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

1 MCLK I Master clock input pin. An external TTL clock should be input on this pin. 2 BICK I Audio serial data clock pin. 3 SDTI I Audio serial data input pin. 4 LRCK I L/R clock pin. 5 RDN I Power-down mode pin.

When at “L”, the AK4341 is in the power-down mode, held in reset and AOUTL/R are held in VCOM. The AK4341 must be reset once upon power-up.

6 SMUTE I Soft mute pin in parallel control mode.

“H”: Enable, “L”: Disable

7 ACKS I Auto setting mode pin.

“L”: Manual setting mode, “H”: Auto setting mode.

8 DIF I Audio data interface format pin.

“L”: 24bit MSB justified, “H”; I2S.

9 DEM I De-emphasis enable pin.

“H”: Enable, “L”: Disable

10 AOUTR O Rch analog output pin.

When PDN pin = “L”, outputs VCOM voltage.

11 AOUTL O Lch analog output pin.

When PDN pin = “L”, outputs VCOM voltage.

12 HVDD I Output buffer power supply pin.

Normally connected to VSS with a 0.1µF ceramic capacitor in parallel with a 10µF electrolytic cap. 13 VSS — Ground pin. 14 VDD — DAC power supply pin. 15 VCOM O DAC common voltage pin.

Normally connected to VSS with a 10µF electrolytic cap.

Outputs VCOM VDD voltage either PDN pin = “L” or “H”. 16 GAIN I Gain control pin.

“H”: +6dB, “L”: 0dB, open: +12dB.

When PDN = “H”, the gain pin is connected to VDD and VSS with 50kΩ resister and held to VDD/2 when open.

When PDN = “L”, connected to VSS with 50kΩ resister.

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2.2. IC1302 (VHiMT8292N+-1Y)

2.2.1 Block Diagram

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2.2.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function sheet name

1 AIN8R I Channel 8 right input. open 2 AIN8L I Channel 8 left input. open 3 MVDD33 — Multiplexer positive supply 3.3 voltage. — 4 VCM33 O Multiplexer midrail divider decoupling pin. C-GND 5 MGND33 — Multiplexer negative supply. GND 6 ADCOUTL O Analog multiplexer left output. AUDIO_IN_L 7 ADCOUTR O Analog multiplexer right output. AUDIO_IN_R 8 HPOUTL O Headphone right channel output. HP_L

9 HPGND — Headphone ground supply pin. GND 10 HPVDD — Headphone power supply pin. S9V 11 HPOUTR O Headphone right channel output. HP_R 12 AGND — Analog negative supply. GND 13 PGA0OUTL O PGA channel 0 left output. open 14 PGA0OUTR O PGA channel 0 right output. open 15 AVDD — Analog positive supply 12 voltage or 9 voltage. S9V 16 VCMPGA O PGA midrail divider decoupling pin. C-GND 17 PGA2OUTL O PGA channel 2 left output. SPK_OUT_L 18 PGA2OUTR O PGA channel 2 right output. SPK_OUT_R 19 PGA1OUTL O PGA channel 1 left output. MONITOR_L 20 PGA1OUTR O PGA channel 1 right output. MONITOR_R 21 INPUT2R I Channel 2 right input to PGA gain module. AOUT_SP_R 22 INPUT2L I Channel 2 left input to PGA gain module. AOUT_SP_L 23 INPUT0R I Channel 0 right input to PGA gain module. AOUT_HP_R 24 INPUT0L I Channel 0 left input to PGA gain module. AOUT_HP_L 25 INPUT1R I Channel 1 right input to PGA gain module. AOUT_MONI_R 26 INPUT1L I Channel 1 left input to PGA gain module. AOUT_MONI_L 27 CL I Control clock pin in serial mode. SCLO_400K 28 DI I/O Control data pin in serial mode. SDAO_400K 29 MUTE# I Hardware mute function when this pin is driven low. AUSW_MUTE 30 RESET# I The device enters a low power mode when this pin is driven low. AUSW_RST 31 GPIO0 I General Purpose I/O 0 and also shares hardware trapped function. R-GND 32 GPIO1 I General Purpose I/O 1. open 33 GPIO2 I General Purpose I/O 2. open 34 GPIO3 I General Purpose I/O 3. COMP_PLUG 35 GPIO4 I General Purpose I/O 4. MUTE_A_ALL 36 DVDD — Digital positive supply 3.3 voltage. D3.3V 37 DGND — Digital negative supply. ground 38 GPIO5 I General Purpose I/O 5. open 39 GPIO6 I General Purpose I/O 6. open 40 GPIO7 I General Purpose I/O 7. TUNER_OUT_SEL 41 GPIO8 I General Purpose I/O 8. TUNER_OUT_CVBS_MUTE 42 GPI I Only General Purpose Input and support internal digital scan mode. CVBS_PLUG 43 AIN1R I Channel 1 right input (default). SC1_IN_R 44 AIN1L I Channel 1 left input (default). SC1_IN_L 45 AIN2R I Channel 2 right input. SC2_IN_R 46 AIN2L I Channel 2 left input. SC2_IN_L 47 AIN3R I Channel 3 right input. COMP_IN_R 48 AIN3L I Channel 3 left input. COMP_IN_L 49 AIN4R I Channel 4 right input. RC/HDMI_IN_R 50 AIN4L I Channel 4 left input. RC/HDMI_IN_L 51 AIN5R I Channel 5 right input. CVBS_IN_R 52 AIN5L I Channel 5 left input. CVBS_IN_L 53 AIN6R I Channel 6 right input. open 54 AIN6L I Channel 6 left input. open 55 AIN7R I Channel 7 right input. open 56 AIN7L I Channel 7 left input. open

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2.3. IC1303, IC9607 (VHiS80944NM-1Y)

2.3.1 Block Diagram

2.3.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

1 OUT O Voltage detection output terminal (RESET detecting voltage).

2 VDD — Voltage input terminal.

3 VSS — Ground terminal.

4 NC — No connection (It is an opening electrically.)

5 CD I External capacitor connection terminal for delay.

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2.4. IC506 (VHiM3221EiP-1Y)

This IC is a block diagram and description LC-19D1E (S58J9LC19D1ES) please see the service manual.

2.5. IC1508 (VHiSii91873-1Q)

2.5.1 Block Diagram

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2.5.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function HDMI RX Port Pins

68 R0X0P I TMDS input port 0 data pairs. 67 R0X0N I 70 R0X1P I 69 R0X1N I 72 R0X2P I 71 R0X2N I 66 R0XCP I TMDS input port 0 clock pair. 65 R0XCN I

4 R1X0P I TMDS input port 1 data pairs.

3 R1X0N I

6 R1X1P I

5 R1X1N I

8 R1X2P I

7 R1X2N I

2 R1XCP I TMDS input port 1 clock pair

1R1XCN I 14 R2X0P I TMDS input port 2 data pairs. 13 R2X0N I 16 R2X1P I 15 R2X1N I 18 R2X2P I 17 R2X2N I 12 R2XCP I TMDS input port 2 clock pair. 11 R2XC N I 22 R3X0P I TMDS input port 3 data pairs. 21 R3X0N I 24 R3X1P I 23 R3X1N I 26 R3X2P I 25 R3X2N I 20 R3XCP I TMDS input port 3 clock pair 19 R3XCN I

HDMI Tx Port Pins

60 TX0P O HDMI Tx Output port data. 61 TX0N O TMDS Low Voltage Differential Signal output data pairs. 58 TX1P O 59 TX1N O 56 TX2P O 57 TX2N O 62 TXCP O 63 TXCN O

System Switching Pins

29 DSDA0 I/O DDC I2C Data for respective port. These signals are true open drain, and do not pull-down to ground when

power is not applied to the device. These pins require an external pull-up resistor.

33 DSDA1 I/O 39 DSDA2 I/O 43 DSDA3 I/O 30 DSCL0 I DDC I2C Clock for respective port. These signals are true open drain, and do not pull-down to ground when

power is not applied to the device. These pins require an external pull-up resistor.

34 DSCL1 I 40 DSCL2 I 44 DSCL3 I 32 R0PWR5V — 5-V Port detection input for respective port. Connect to 5-V signal from HDMI input connector. 36 R1PWR5V — 42 R2PWR5V — 46 R3PWR5V — 31 HPD0 O Hot Plug Detect Output for respective port. Connect to HOTPLUG of HDMI input connector. 35 HPD1 O 41 HPD2 O 45 HPD3 O 49 R4PWR5V — 5V power from 5th Rx port.

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Control Pins

54 CSCL I Local Configuration/Status I2C Clock. Chip configuration/status is accessed via this I2C port.

This pin is a true open drain, so it does not pull to ground if power is not applied.

53 CSDA I/O Local Configuration/Status I2C Data. Chip configration/status is accessed via this I2C port.

This pin is a true open drain, so it does not pull to ground if power is not applied.

48 DSCL4 I DDC I2C Clock for VGA port. HDCP KSV, Aa, and Ri values are exchanged over this I2C port during authen-

tication. This pin is a true open drain, so it does not pull to ground if power is not applied. The R4PWR5V (VREF) pad will provide a reference voltage for the PROT input pin.

47 DSDA4 I/O DDC I2C Data for VGA port. HDCP KSV, Aa, and Ri values are exchanged over this I2C port during authen-

tication. This pin is a true open drain, so it does not pull to ground if power is not applied. The R4PWR5V (VREF) pad will provide a reference voltage for the PROT input pin.

Configuration Pins

55 TPWR_CI2CA I/O I2C Slave Address input/Transmit Power Sense Output. When RESET# is LOW, this pin is used as an input

to latch the I2C sub _address. The level on this pin is latched when the RESET# pin transition from LOW to HIGH. When RESET# is HIGH, this pin is used as the TPWR output, indicating that the receive port has 5V present.

52 INT O Interrupt Output.

This is an open_drain output and requires an external pull_up resister.

10 RSVD — When SBVCC (pin38) = 5V, RSVD pin #10 must be tied to GND with less than 10K resistor.

When SBVCC (pin38) = 3.3V, RSVD pin #10 must be tied to GND with 1M ohm resistor.

28 RSVD — These pins must be tied to GND during normal operation.

CEC Pins

50 CEC_A I/O HDMI compliant CEC I/O used for interfacing to CEC devices. The signal is electrically compliant with CEC

specification. This pin connects to the CEC signal of all HDMI connectors in the system. As an input, the pin acts as a LVTTL, Schmitt triggered input and is 5V tolerant. As an output, the pin acts as an NMOS driver with resistive pull-up. This pin has an internal pull-up resistor.

51 CEC_D I/O This pin is configurable through NVRAM. For CEC_D use, this pin interfaces to the CEC master. Usually

connected to Micro-controller. Power and Ground Pins 9,27,64 VCC33 — TMDS Core VCC. Must be supplied at 3.3V

37 MICOM_VCC33 — During normal mode, this pin provides 3.3V power to external micro-controller. Maximum output current is

30mA.

38 SBVCC — Local Power from TV.

When SBVCC (pin38) = 5V, RSVD pin #10 must be tied to GND with less than 10K resistor.

When SBVCC (pin38) = 3.3V, RSVD pin #10 must be tied to GND with 1M ohm resistor.

ePad Epad — ePad must be connected to ground.

All ground planes, analog and digital, must be tied together to the ePad, which must be connected to ground.

Pin No. Pin Name I/O Pin Function

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2.6. IC3302 (VHiBD6538G+-1Y)

2.6.1 Block Diagram

2.6.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

1 VIN I Power supply input terminal.

It is an input terminal to the switch and a power supply input terminal of an internal circuit.

2 GND — Ground 3 EN I Switch enable input terminal.

The switch is turned on by inputting the high level.

4 /OC O Overcurrent notification terminal.

When the overcurrent is detected, it becomes a low level.

Open drain output.

5 VOUT O Switch output terminal.

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2.7. IC3304 (VHiS80928NM-1Y), IC3305 (VHiS80920NM-1Y)

2.7.1 Block Diagram

2.7.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

1 OUT O Voltage detection output terminal. (RESET detecting voltage) 2 VDD — Voltage input terminal. 3 VSS — Ground terminal. 4 NC — No connection (It is an opening electrically.) 5 CD I External capacitor connection terminal for delay.

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2.8. IC3501, IC3502 (RH-iXC505WJQZQ)

2.8.1 Block Diagram

2.8.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

J8, K8 CK, CK# I Clock:

CK and CK# are differential clock inputs. All address and control input signals are sampled on the crossing of the positive edge of CK and negative edge of CK#. Output (read) data is referenced to the crossings of CK and CK# (both directions of crossing).

K2 CKE I Clock Enable:

CKE HIGH activates, and CKE Low deactivates, internal clock signals and device input buffers and output drivers. Taking CKE Low provides Precharge Power-Down and Self Refresh operation (all bank idle), or Active Power-Down (row Active in any bank). CKE is synchronous for power down entry and exit, and for self refresh entry. CKE is asynchronous for self refresh exit. After VREF has become stable during the power on and initialization sequence, it must be maintained for proper operation of the CKE receiver. For proper self-refresh entry and exit, VREF must be maintained to this input. CKE must be maintained high throughout read and write accesses. Input buffers, excluding CK, CK#, ODT and CKE are disabled during power-down. Input buffers, excluding CKE are disabled during self refresh.

L8 CS# I Chip Select:

All commands are masked when CS# is registered HIGH. CS# provides for external bank selection on systems with multiple banks. CS# is considered part of the command code.

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K9 ODT I On Die Termination:

ODT (registered HIGH) enables termination resistance internal to the DDR2 SDRAM. When enabled, ODT is only applied to each DQ, DQS, DQS#, RDQS, RDQS#, and DM signal for x4/x8 configuration. For x16 configuration, ODT is applied to each DQ, UDQS/UDQS#. LDQS/LDQS#, UDM and LDM signal. The ODT pin will be ignored if the Extended Mode Register Set (EMRS) is programmed to disable ODT.

K7, L7, K3 RAS#, CAS#,

WE#

I Command Inputs:

RAS#, CAS# and WE# (along with CS#) define the command being entered.

F3, B3 DM

(UQM3) (DQM1) or (UQM2) (DQM3)

I Input Data Mask:

DM is an input mask signal for write data. Input data is masked when DM is sampled HIGH coincident with that input data during a Write access. DM is sampled on both edges of DQS. Although DM pins are input only, the DM loading matches the DQ and DQS loading. For x8 device, the function of DM or RDQS/RDQS# is enabled by EMRS command.

L2, L3 BA0, BA1 I Bank Addres Inputs:

BA0 and BA1 define to which bank an Active, Read, Write or Precharge command is being applied. Bank address also determines if the mode register or extended mode register is to be accessed during a MRS or EMRS cycle.

M8, M3, M7, N2, N8, N3, N7, P2, P8, P3, M2, P7, R2

A [0:12] I Address Inputs: Provide the row address for Active commands, and the column address and Auto

Precharge bit for Read/Write commands to select one location out of the memory array in the respective bank. A10 is sampled during a precharge command to determine whether the PRECHARGE applies to one bank (A10 LOW) or all banks (A10 HIGH). If only one bank is to be precharged, the bank is selected by BA0, BA1. The address inputs also

provide the op-code during a Mode Register Set command. G8, G2, H7, H3, H1, H9, F1, F9,

C8, C2, D7, D3, D1, D9, B1, B9

DQ [0:15] or DQ [16:31]

I/O Data Input/Output: Bi-directional data bus.

B7, A8, F7, E8 (DQS1), (DQS1#)

(DQS0), (DQS0#) or (DQS3), (DQS3#) (DQS2), (DQS2#)

I/O Data Strobe:

Output with read data, input with write data. Edge-aligned with read data, centered in write data.

For the x16, DQS1 corresponds to the data on DQ0>DQ7; DQS0 corresponds to the data on

DQ8>DQ15.

For the x8, an DQS2 option using DM pin can be enabled via the EMRS (1) to simply read timing.

The data strobes DQS1, DQS0, DQS3, and DQS2 may be used in single ended mode or paired

with optional complementary signals DQS1#, DQS0#, DQS3# and DQS2# to provide differential

pair signaling to the system during both reads and writes. A control bit at EMRS (1) [A10] enables

or disables all complementary data strobe signals.

In this data sheet, “differential DQS signals” refers to any of the following with A10=0 of EMRS (1)

x4 DQS1/DQS1#

x8 DQS1/DQS1# if EMRS (1) [A11] =0

x8 DQS1/DQS1#, DQS2/DQS2#

x16 DQS0/DQS0# and DQS3/DQS3# A2, E2, L1, R3, R7, R8

NC — No Connect: No internal electrical connection is present.

A1, E1, J9, M9, R1VDD — Power Supply: +1.8V ± 0.1V.

A9, C1, C3, C7, C9, E9, G1, G3, G7, G9

VDDQ — DQ Power Supply: +1.8V ± 0.1V.

A3, E3, J3, N1, P9VSS — Ground.

A7, B2, B8, D2, D8, E7, F2, F8, H2, H8

VSSQ — Ground. DQ Ground.

J1 VDDL — DLL Power Supply: +1.8V ± 0.1V. J7 VSSDL — DLL Ground. J2 VREF I Reference voltage for inputs for SSTL interface.

Pin No. Pin Name I/O Pin Function

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2.9. IC8403 (RH-iXC788WJZZY)

2.9.1 Block Diagram

2.9.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

1CS#

(Chip Select)

I Places device in active power mode when driven low.

Deselects device and places SO at high impedance when high. After power-up, device requires a falling edge on CS# before any command is written. Device is in standby mode when a program, erase, or Write Status Register operation is not in progress.

2SO

(Signal data Output)

O Transfers data serially out of the device on the falling edge of SCK.

3W#

(Write Protect)

I Protects the memory area specified by Status Register bits BP2:BP0.

When driven low, prevents any program or erase command from altering the data in the protected mem-

ory area. 4 GND — Ground 5SI

(Serial Data Input)

I Transfers data serially into the device. Device latches commands, addresses, and

program data on SI on the rising edge of SCK. 6SCK

(Serial Clock)

I Provides serial interface timing.

Latches commands, addresses, and data on SI on rising edge of SCK.

Triggers output on SO after the falling edge of SCK. 7 HOLD# I Pauses any serial communication with the device without deselecting it. When driven low, SO is at high

impedance, and all input at SI and SCK are ignored. Requires that CS# also be driven low. 8 VCC — Supply Voltage

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2.10. IC8401 (RH-iXC721WJQZQ)

2.10.1 Block Diagram

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2.10.2 Pin Connections and short description

2.11. IC8455 (VHiBR24S64F-1Y)

This IC is a block diagram and description LC-32A47E/RU/V (S59Z4LC32A47E) please see the service manual.

Pin No. Pin Name I/O Pin Function

29-44 IO0-IO7 I/O DATA INPUTS/OUTPUTS

The IO pins allow to input command, address and data and to output data during read/program operations. The inputs are latched on the rising edge of Write Enable (WE#). The I/O buffer float to High-Z when the device is deselected or the outputs are disabled.

16 CLE I COMMAND LATCH ENABLE

This input activates the latching of the IO inputs inside the Command Register on the Rising edge of Write Enable (WE#).

17 ALE I ADDRESS LATCH ENABLE

This input activates the latching of the IO inputs inside the Address Register on the Rising edge of Write Enable (WE#).

9 CE# I CHIP ENABLE

This input controls the selection of the device. When the device is busy CE# low does not deselect the memory.

18 WE# I WRITE ENABLE

This input acts as clock to latch Command, Address and Data. The IO inputs are latched on the rise edge of WE#.

8 RE# I READ ENABLE

The RE# input is the serial data-out control, and when active drives the data onto the I/O bus. Data is valid tREA after the falling edge of RE# which also increments the internal column address counter by one.

19 WP# I WRITE PROTECT

The WP# pin, when Low, provides an Hardware protection against undesired modify (program/erase) operations.

7 A/B# I READY BUSY

The Ready/Busy output is an Open Drain pin that signals the state of the memory.

37 VCC — SUPPLY VOLTAGE

The VCC supplies the power for all the operations (Read, Write, Erase). 36 VSS — GROUND 1-6, 10-11, 14-15,

20-28, 33-35, 39-40, 45-48

NC — NO CONNECTION

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2.12. IC4402 (VHiAOZ1320C-1Y)

2.12.1 Block Diagram

2.12.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

1OUT OOutput.

OUT is the source of the P-channel MOSFET. 2 GND — Ground 3 EN I Enable.

The P-channel MOSFET turns on when EN is logic HIGH. 4 NC — No connect.

This pin is not internally connected. 5 GND — Ground 6 IN I Input.

IN is the drain of the P-channel MOS FET. It is the supply input of the IC.

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2.13. IC4401 (VHiMT8295AE-1Q)

2.13.1 Block Diagram

2.13.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function Sheet Name Miscellaneous

107 RESETB I Chip reset. CI_CNT_RESET 114 CI_INT O interrupt. CI_CNT_INT

NAND flash

116 CI_DATA0 I/O NAND Flash Data bit 0. PDD0_ 115 CI_DATA1 I/O NAND Flash Data bit 1. PDD1_

95 CI_DATA2 I/O NAND Flash Data bit 2. PDD2_ 102 CI_DATA3 I/O NAND Flash Data bit 3. PDD3_ 101 CI_DATA4 I/O NAND Flash Data bit 4. PDD4_ 100 CI_DATA5 I/O NAND Flash Data bit 5. PDD5_

99 CI_DATA6 I/O NAND Flash Data bit 6. PDD6_

98 CI_DATA7 I/O NAND Flash Data bit 7. PDD7_

94 CI_CEB I NAND Flash Chip enable. CI_CE#

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106 CI_RB O NAND Flash Ready. N_PARB_

96 CI_WEB I NAND Flash Write enable. XEWE_ 103 CI_ALE I NAND Flash Address Latch enable. PAALE_ 105 CI_CLE I NAND Flash Command Latch enable. PACLE_ 117 CI_OEB I NAND Flash Output enable. XERE_

CLK/Crystal

109 XTALO O Crystal output. XTAL_O 110 XTALI I Crystal input. XTAL_I

Transport stream (TS)

6 TOCLK I Transport stream 1 input clock. TS_CPUOUT_CLK 7 TOSYNC I Transport stream 1 input sync. TS_CPUOUT_SYNC 8 TOVALID I Transport stream 1 input valid. TS_CPUOUT_VAL 9 TODATA0 I Transport stream 1 input data bit 0. TS_CPUOUT_DO

11 TODATA1 I Transport stream 1 input data bit 1.

Transport stream 2 input clock.

open

12 TODATA2 I Transport stream 1 input data bit 2.

Transport stream 2 input sync.

open

13 TODATA3 I Transport stream 1 input data bit 3.

Transport stream 2 input valid.

open

14 TODATA4 I Transport stream 1 input data bit 4.

Transport stream 2 input data.

open

16 TODATA5 I Transport stream 1 input data bit 5. open

17 TODATA6 I Transport stream 1 input data bit 6. open

18 TODATA7 I Transport stream 1 input data bit 7. open 123 TS_CKO O Transport stream output clock. TS_CPUIN_CLK 125 TS_SYNCO O Transport stream output sync. TS_CPUIN_SYNC 122 TS_VALIDO O Transport stream output valid. TS_CPUIN_VAL 124 TS_DATAO O Transport stream output data. TS_CPUIN_DO

General Purpose Input and Output (GPIO)

1 GPIO0 I/O General purpose I/O bit 0. (Resister-Ground) R-G 2 GPIO1 I/O General purpose I/O bit 1. (Resister-Ground) R-G 3 GPIO2 I General purpose I/O bit 2. (Head Phone Plug) HP_PLUG

4 GPIO3 O General purpose I/O bit 3. (Amp Standby) AMP_STBY 19 GPIO4 I/O General purpose I/O bit 4. open 20 GPIO5 O General purpose I/O bit 5. (Antena_5V_SW) ANT_5V_SW 21 GPIO6 I/O General purpose I/O bit 6. open 91 GPIO7 I/O General purpose I/O bit 7. open 92 GPIO8 I/O General purpose I/O bit 8. open 93 GPIO9 O General purpose I/O bit 9. (Common Interface VCC Enable) CI_VCCEN

118 GPIO10 O General purpose I/O bit 10. (Panel I2C Enable) PNL_I2C_EN 119 GPIO11 O General purpose I/O bit 11. (Panel Write Protect) PNL_WP 120 GPIO12 I General purpose I/O bit 12. (232C_Eable) 232C_EN 127 GPIO13 O General purpose I/O bit 13. (ATV_Power_SW) ATV_POW_SW 128 GPIO14 I General purpose I/O bit 14. (Interrupt enable _SW) IREM_SW

PCMCIA/CI

83 D0 I/O PCMCIA data bit 0. C_D0 85 D1 I/O PCMCIA data bit 1. C_D1 87 D2 I/O PCMCIA data bit 2. C_D2 24 D3 I/O PCMCIA data bit 3. C_D3 26 D4 I/O PCMCIA data bit 4. C_D4 28 D5 I/O PCMCIA data bit 5. C_D5 30 D6 I/O PCMCIA data bit 6. C_D6 32 D7 I/O PCMCIA data bit 7. C_D7 81 D8 I/O PCMCIA data bit 8. TS_CIOUT_D0 84 D9 I/O PCMCIA data bit 9. TS_CIOUT_D1 86 D10 I/O PCMCIA data bit 10. TS_CIOUT_D2 25 D11 I/O PCMCIA data bit 11. TS_CIOUT_D3 27 D12 I/O PCMCIA data bit 12. TS_CIOUT_D4 29 D13 I/O PCMCIA data bit 13. TS_CIOUT_D5 31 D14 I/O PCMCIA data bit 14. TS_CIOUT_D6 34 D15 I/O PCMCIA data bit 15. TS_CIOUT_D7 80 A0 O PCMCIA address bit 0. CI_A0 78 A1 O PCMCIA address bit 1. CI_A1 75 A2 O PCMCIA address bit 2. CI_A2 73 A3 O PCMCIA address bit 3. CI_A3

Pin No. Pin Name I/O Pin Function Sheet Name

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71 A4 O PCMCIA address bit 4. CI_A4 69 A5 O PCMCIA address bit 5. CI_A5 66 A6 O PCMCIA address bit 6. CI_A6 64 A7 O PCMCIA address bit 7. CI_A7 46 A8 O PCMCIA address bit 8. CI_A8 44 A9 O PCMCIA address bit 9. CI_A9 37 A10 O PCMCIA address bit 10. CI_A10 41 A11 O PCMCIA address bit 11. CI_A11 62 A12 O PCMCIA address bit 12. CI_A12 48 A13 O PCMCIA address bit 13. CI_A13 50 A14 O PCMCIA address bit 14. CI_A14 59 A15 O PCMCIA address bit 15. TS_CIIN_CLK 57 A16 O PCMCIA address bit 16. TS_CIIN_VAL 45 A17 O PCMCIA address bit 17. TS_CIIN_SYNC 47 A18 O PCMCIA address bit 18. TS_CIIN_D0 49 A19 O PCMCIA address bit 19. TS_CIIN_D1 51 A20 O PCMCIA address bit 20. TS_CIIN_D2 54 A21 O PCMCIA address bit 21. TS_CIIN_D3 56 A22 O PCMCIA address bit 22. TS_CIIN_D4 58 A23 O PCMCIA address bit 23. TS_CIIN_D5 61 A24 O PCMCIA address bit 24. TS_CIIN_D6 63 A25 O PCMCIA address bit 25. TS_CIIN_D7 67 RESET O PCMCIA reset. CI_RESET 35 CE1_ O PCMCIA card enable 1. CI_EN1 36 CE2_ O PCMCIA card enable 2. CI_EN2 23 CD1_ I PCMCIA card detection 1. CI_CARDDET1 88 CD2_ I PCMCIA card detection 2. CI_CARDDET2 38 VS1_ I PCMCIA voltage sense 1. C_VS1 65 VS2_ I PCMCIA voltage sense 2. TS_CIOUT_CLK 79 BVD1 I PCMCIA battery voltage detection 1. TS_CIOUT_SYNC 77 BVD2 I PCMCIA battery voltage detection 2. TS_CIOUT_VAL 72 INPACK_ I PCMCIA input port acknowledge. CI_INP_ACK 70 WAIT_ I PCMCIA wait. CI_WAIT 40 IORD_ O PCMCIA IO read strobe. CI_RD 42 IOWR_ O PCMCIA IO write strobe. CI_WR 74 REG_ O PCMCIA register selection. CI_REG 39 OE_ O PCMCIA output enable. CI_OE 53 WE_ O PCMCIA write enable. CI_WE 55 READY I PCMCIA ready. CI_IREQ 89 WP I PCMCIA write protect. CI_IOSIS16

General Purpose Input and Output (GPIO)

5 VCC33 — I/O power 3.3V D3.3V 33 VCC33 — I/O power 3.3V D3.3V 52 VCC33 — I/O power 3.3V D3.3V 68 VCC33 — I/O power 3.3V D3.3V 97 VCC33 — I/O power 3.3V D3.3V

121 VCC33 — I/O power 3.3V D3.3V

10 GND33 — Ground G 43 GND33 — Ground G 60 GND33 — Ground G 76 GND33 — Ground G

104 GND33 — Ground G 126 GND33 — Ground G

15 VCC18 — Core power 1.8V D1.8V 82 VCC18 — Core power 1.8V D1.8V 22 GND18 — Ground G 90 GND18 — Ground G

108 AVDD33_XTAL — Analog crystal power 3.3V D3.3V 111 AVSS33_XTAL — Analog crystal ground G 112 AVDD18_PLL — Analog PLL power 1.8V D1.8V 113 AVSS18_PLL — Analog PLL ground G

Pin No. Pin Name I/O Pin Function Sheet Name

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5 – 21

2.14. IC2701 (VHiYDA148QZ-1Y)

This IC is a block diagram and description LC-32A47E/RU/V (S59Z4LC32A47E) please see the service manual.

2.15. IC9605/IC9608 (VHiLV5893M+-1Y)

2.15.1 Block Diagram

2.15.2 Pin Connections and short description

2.16. IC9606 (VHiLV5805M+-1Y)

This IC is a block diagram and description LC-19D1E (S58J9LC19D1ES) please see the service manual.

Pin No. Pin Name I/O Pin Function

1 BOOT I Upper part MOS transistor boot strap capacity connection terminal.

Connect the boot capacity of about 0.022µF between SW terminals. The boot capacity series resistance (about100Ω) is effective for stable operation.

2 VIN I Input power source terminal.

Connect very big capacity (10µF 2 or more) between GND.

3 SW I Power switch terminal.

Connect the output LC filter. Connect the above-mentioned capacity between BOOT terminals. 4 GND — Ground 5 FB I Feedback terminal.

The output voltage is set by the division resistance of output voltage (Vout-FB-GND). 6 COMP I Phase compensation terminal.

Connect external capacity and resistance for the phase compensation of the DC/DC converter close loop. 7 EN I Enable terminal

It operates the converter by a high voltage or the opening. It stops with GND the converter operation. 8 SS — Soft start terminal.

The soft start time is set by built-in 10µA source voltage and external soft start capacity.

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2.17. IC9611 (VHiTCR5SB25-1Y)

2.17.1 Pin Connections and short description

2.18. IC9604 (VHiLV58072M-1Y)

2.18.1 Block Diagram

2.18.2 Pin Connections and short description

Pin No. Pin Name I/O Pin Function

1 VIN I Input power source terminal.

A small, ceramic type can be used for the input capacitor (0.1µF). 2 GND — Ground 3 CONTROL I Control terminal. In control voltage ON, it is 1.5-6V, and turning off is 0.25V or less.

Control voltage Output voltage

HIGH ON LOW OFF

4 NC — No connection 5 VOUT O Output voltage terminal.

The output voltage of TCR5SB25 is 2.5V±0.05V.

A small, ceramic type can be used for the output capacitor (1.0µF).

Pin No. Pin Name I/O Pin Function

1 BOOT I Bootstrap Terminal

Connect the boost capacity of about 0.022µF between SW terminals. 2 VIN I Input Voltage Terminal

Connect very big capacity between GND. 3 SW O Power Switch Terminal

Connect output LC filter. Moreover connect the above-mentioned capacity between BOOT terminals. 4 GND — Ground 5 FB I Feed Back Terminal

The output voltage is set by the division resistance between the output voltages. 6 COMP I Phase Compensation Terminal

The phase amends external capacity and the resistance of the DC/DC converter close loop are connected. 7 EN I Enable Terminal

The converter works by the High voltage impression. 8 SS — Softstart Terminal

The soft start time is set by built-in 10µA source voltage and external soft start capacity.

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2.19. IC2601, IC9601 (VHiHC2G66DP-1Y)

2.19.1 Block Diagram

2.19.2 Pin Connections and short description

2.20. IC7201 (VHiSTRY64761E)

This IC is a block diagram and description LC-32A47E/RU/V (S59Z4LC32A47E) please see the service manual.

2.21. IC7101 (VHiNCP1606B-1Y)

This IC is a block diagram and description LC-32A47E/RU/V (S59Z4LC32A47E) please see the service manual.

2.22. IC7700 (VHiBD9897FS-1Y)

This IC is a block diagram and description LC-32A47E/RU/V (S59Z4LC32A47E) please see the service manual.

Pin No. Pin Name I/O Pin Function

1 1Y I/O Independent input or output. 2 1Z I/O Independent input or output. 3 2E I Enable input (active HIGH). 4 GND — Ground 5 2Y I/O Independent input or output. 6 2Z I/O Independent input or output. 7 1E I Enable input (active HIGH). 8 VCC — Supply voltage.

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— M E M O —

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LC-32DH57E-BK

Service Manual

CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM

[1] SYSTEM BLOCK DIAGRAM

1097654 8

1311 191816151412 17

SYSTEM BLOCK DIAGRAM

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[2] OVERALL WIRING DIAGRAM

1097654

1311 191816151412 17

OVERALL WIRING DIAGRAM

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LC-32DH57E-BK

Service Manual

CHAPTER 7. PRINTED WIRING BOARD

[1] MAIN UNIT PRINTED WIRING BOARD

10976543 8

1311 191816151412 17

MAIN Unit (Side-A)

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1097654

1311 191816151412 17

MAIN Unit (Chip PArts Side-A)

C1118

VA1524

C1119

C8456

C8457

C1310

L3301

C1312

C1314

C1120

C1509

C1121

Q1505

C1122

Q1506

Q1507

C1123

R600

R601

D1101

R602

R603

R604

R605

R1101

C1129

C1512

R606

R1102

R607

C1320

R608

C1514

C1321

R609

R1105

C1516

C1130

C1131

IC1102

C9603

IC1103

R610

C1134

R1301

R611

C1135

R1302

C1136

R613

C1137

R615

C1521

C4401

R616

R617

C4403

IC1301

R8451

IC1302

C1332

R8452

IC1303

R8453

D1504

R1118

C9611

R8455

R8456

R1502

C9612

D1507

C9613

R1504

R620

R1505

R621

R1506

R622

C9616

R623

R1508

R624

R1509

R625

C9619

R626

R1122

R629

R1125

R1126

IC1506

IC1507

R1128

IC1508

R1511

C9621

R1512

C9622

C9623

R630R631

R1515

C9625

R632

R633

R1130

C9628

C4420

R635

R636

R637

R638

D9608

R639

D9609

R8474

D1525

IC9601

C9631

R4402

C9634

IC9604

D9610

R4404

R640

R641

P2701

D9611

IC9605

R1526

D9612

IC9606

R4406

R1333

R1527

D9613

R4407

R1334

R1528

C9638

IC9608

R4408

R1335

IC9609

C9639

R4409

IC4401

R1336

R1142

R1337

R1143

R1338

R1144

R1145

R1146

R1147

IC9610

C9640

R4410

R1531

C9641

R1149

R4411

R1532

R4412

R1533

R4413

R1534

R4414

R1535

R1536

C9646

R1537

C9647

R9620

R1150

C9648

C9649

R9621

R4419

R1152

R1153

R9624

R1154 R1155

R1156

R1157

C9650

R4420

R1158

C9651

R1159

C9652

R1544

C9654

C9655

R1547

C9657

C2704

R1548

C2705

R1549

C9659

C2706

R9632

C2707

Q2703

R9633

C2708

C2709

R9638

C9661

C9663

C2710

R1554

C9664

C2711

R1555

C9665

C2712

R1556

C2713

R1557

R4437

C2714

R9640

C2715

R4439

C2716

C2717

C2718

C2719

FB2601

FB2602

FB2603

C2720

R1564

R4444

C2721

R1565

C2722

C2723

R1567

C2724

R1568

VA3301

C2725

R4449

VA3302

D2702

C2726

D2703

C2727

R9653

C2728

D2704

R9654

P3301

C2729

D2705

R9655

D2706

R9656

R9657

FB2610

R1570

R9658

FB2611

R9659

R2706

FB2614

C2730

IC2701

C2731

FB2616

C2732

FB2617

C2733

C2734

R9660

C2735

R9661

C2736

R9662

C2737

C2738

R2710

R9664

C2739

Q505

R9665

Q506

R2712

R9666

R2713

R9667

R2714

R2715

Q509

R9669

R2716

R2717

Q510

FB2629

R9671

R9672

R2720

R9674

C3301

L501

R2721

R9675

C3302

L502

R2722

R9676

C3303

L503

R2723

R2724

L504

C3304

R2725

C3305

X8601

C3306

Q3303

C3307 C3308

C3503

L2613

C3310

L2614L2615

L2616 L2617L2618

FL501

FL502

C3316

FL503

FL504

FL505

FL506

FL507FL508

FL509

FL510

FL511

FL512

FL513

FL514

VA501

FL515

D3305

VA502

FL516

VA503

FL517

VA504

VA505

VA506

VA507

VA508

R3308

VA509

R3309

IC3303

D3310

R3502

D3312

D3313

VA510

R3310

D3314

R3311

D3315

R3507

R3508

FB501

IC3501

R3509

D3319

IC3502

FB502

FB503

FB504

R3318

FB505

TH3301

TH3302

FB506

FB507

FB508

FB509

D3321

D3322

R3513R3514

L8601

FB510

R501

FB511

R502

FB512

R3326

FB513

R504

FB514

R3328

FB515

R505

R506

FB516

R507

FB517

R508

FB518

FB519

R3330

R3527

R3333

FB520

R511

FB521

FB522

R512

FB523

R3337

R513

R514

FB524

C3360

FB525

R515

FB526

R516

FB527

R517

FB528

R518

R519

FB529

R3341

R3342

R520

R521

X4401

FB531

R522

FB532

R523

FB533

R524

FB534

R525

FB535

R526

C3372

FB536

R527

R528

C3374

R529

C3375

C3376

L1101

L1103

L1104

R530

R531

R532

R533

R3357

R3358

R534

SC1501

R3359

R535

SC1502

R536

C3382

FB9602

SC1503

R537

C3383

FB9603

R538

R3550

FB9604

LUG9601

R539

C3385

FB9605

LUG9602

L1302

FB9606

C3386

LUG9603

FB9607

R3360

LUG9604

C501

C3389

LUG9605

C502

LUG9606

LUG9607

C503

C504

R540

LUG9608

R3365

P2601

R541

R542

R3366

C507

R543

R3367

P2603

P2604

C508

R544

C3390

R545

R3369

C3392

R546

FB9612

R547

C3393

R548

C3394

C3395

C3396

C3397

C3398

C510

C511

R3371

R550

R551

R552

R553

C517

R3377

R554R555

C519

R556

R557

R558

R559

C520

C521

L9601

C522

L9602

C523

L9603

R560

C524

L9604

R561

C525

C2602

R562

C526

R563

C527

R564

C528

R3388

R565 C529

R566

R567

Q2603

R568

R569

C530C531

C532

C533

C534

R570

C535

R571

C536C537

C538

R574

R3398

C539

R575

R576

R578

R579

C540

C541

R580

R581

P8401

R582

C546

C547

C548

R584

C549

R586

R588

R589

R2601

R2602

R2603

R2604

C550

C551

C552

R2606

C553

R2607

R590

C554

R2608

IC2601

R591

C555

R2609

R592

C556

C557

R593

C558

R594

R595

C559

R596

R597

R598

R2610

R599

C560

C561

C562

D503

C563

D504

C564

R2619

C565

D505

C566

D506

D507

C567

C568

D508

D509

C569

R2620

D510

C571

D511

D512

C572

D513

C573

C574

D514

D515

L2701

C575

C8605

L2702

C8606

L2703

C577

C8607

C578

L2704

L2705

C8609

L2706

C580

IC501

D521

R2635

C581

C8611

C582

D522

C8612

D523

C583

IC503

C8613

C584D524

IC504

C8614

R2639

D525

IC505

C585

C8615

IC506

C586

D526

IC507

C587

D527

C588

IC508

D528

C589

D8401

R2640

R8401

R2641

R8402

R2642

R8403

R8404

C590

R8405

C591

C592

R8407

C593

R8408

VA1501

C8625

D8601

IC8402

VA1502

C8626

D8602

FB3303

VA1503

IC8403

IC8404

VA1504 VA1505

VA1506

R8602

VA1507

VA1508

R8604

VA1509

R8605

R3400

R8608

C1101

R8609

C8631

R3402

C8632

R3403

C1103

IC8603

VA1510

C1104

R3405

VA1511

C1105

VA1512

C1106

R3407

FB3313

VA1513

C1107

VA1514

C1108

Q1104

R3408

VA1515

C1109

Q1105

R8611

R3409

VA1516

Q1106

R8612

VA1517

FB3318

VA1518

C1301

FB3319

VA1519

C1302

C1303

C1304

C1110

Q1301

C1305

P9601

C1306

P9602

C1308

VA1520

C8451

VA1521

VA1522

VA1523

Page 85

LC-32DH57E-BK/RU-BK/S-BK

7 – 3

1097654

1311 191816151412 17

MAIN Unit (Side-B)

Page 86

LC-32DH57E-BK/RU-BK/S-BK

7 – 4

1097654

1311 191816151412 17

MAIN Unit (Chip Parts Side-B)

C1501

C8455

C1502

C1503

C1504

C1311

C1505

Q1501

Q1502

C1506

Q1503

C1507

C1313

C1508

Q1504

C1315

C1316

C1317

C1124

C8460

C1318

Q1508

C8461

C1319

Q1509

C1125

C8462

D1102

C1126

D1103C1127

C1510

C1128

C1511

R1103

C1513

Q1510

Q1511

C1515

C1322

Q1512

C1323

C1517

Q1513

C1324

C1518

D1301

C1325

C1519

C9601

R1109

IC1101

C1326

C9602

C1327

IC1104

C9604

C1328C1329

Q9601

C9605

R612

C9606

Q9602

R1303

C9607

C9608

R1304

R614

C1520

R1110

Q9604

R1305

R1111

C9609

Q9605

R1306

R1112

Q9606

C4402

R1307

C1523

Q9607

R1113

R1308

C1330

R618

C1524

Q9608

R1114

C4404

R1309

R619

C1331

D1501

C1525

R1115

C4405

D1502

C1526

R1116

C4406

D1503

C1333

C1527

R1117

C4407

C1528

C9610

C4408

R1501

C1529

D1505

C4409

D1506

R1503

R8457

D1508

R1310

C9614

R8458

R1311

D1509

C9615

R8459

R1312R1313

R1507

C9617

R1314

C1530

R1120

C9618

C4410

IC8455

R1315

R1121

C4411

R1316

C4412

R627

R1317

R1123

C4413

IC1504

D1510

R628

R1318

R1124

C4414

R8461

D1511

IC1505

R1319

C4415

R8462

D1512

C4416

R8463

R1127

D1513

C4417

R8464

D1514

R1510

C9620

C4418

R1129

D1515

C4419

D1516

D1517

R1513

R1514

R1320

D1518

C9624

D1519

R1321

D9601

R1516

C9626

D9602

R1323

R1517

C9627

D9603

R1518

R1324

D9604

R1519

R1131

D9605

C9629

R9601

C4421

D9606

R9602

C4422

D9607

R9603

C4423

D1520

R9604

C4424

D1521

R9605

C4425

D1522

R9606

C4426

D1523

R9607

C4427

R1520

D1524

R9608

C9630

C4428

R9609

R4401

C4429

R1522

D1526

IC9602

C9632

IC9603

R1523

D1527

C9633

R4403

R1330

R1331

C9635

R4405

C9636

C9637

IC9607

R9610

R9611

R1529

R9612

D9616

IC4402

R9613

D9617

R8480

D9618

R1339

R9615

R9616

R9617

R1530

R9618

R9619

IC9611

C9642

IC9612

C9643

C9644

C9645

R4415

R4416

R4417

R1538

R4418

R1539

R9622

R9623

R9625

R9626

R1540

R9628

R9629

R4421

R4422

R4423

R4424

C2701

R1545

R4425

C2702

R1546

C9656

R4426

C2703

R4427

R9630

C9658

R4428

Q2701

R9631

R4429

Q2702

Q2704

R9634

R9635

R9636

R9637

R1550

C9660

R4430

R1551

R9639

R1552

C9662

R4432

R1553

R4433

R4434

R4435

C9666

R4436

C9667

R1558

C9668

R4438

R1559

R9641

R9642

R9643

R9644

R9645

R9646

R9647

R1560

C9670

R9648

R4440

R1561

C9671

R9649

R4441

R1562

C9672

R4442

R1563

R4443

C9673

FB2604

C9674

FB2605

R4445

FB2606

R1566

R4446

FB2607

R4447

FB2608

R9650

R4448

D2701

R1569

R9651

R9652

R2701

R2702

R2703

R4450

R2704

R2705

R1572

R2707

R1573

R2708

R1574

R2709

R1575

Q501 Q502

Q503 Q504

R2711

Q507Q508

FB2623

R2718

C2740

R2719

C2741

R9670

R9673

R9677

R9678

R2726

R2727

R2728

C3309

C3501C3502

C3504

C3311

C3505

C3312

C3506

C3507

C3313 C3314

C3508

C3315

C3509

C3317

C3318

C3510

C3511

C3512

C3513

C3320

C3514

C3321

C3515

C3516

C3322

C3517

C3323

C3324

C3518

C3519

D3301

C3325

C3326

D3302

C3327

D3303

D3304

C3328

R3301

C3329

D3306

R3302

D3307

C3520

R3304

D3308

C3521

R3305

D3309

C3522

C3523

R3307

C3524

C3330

D3501

IC3301

C3331

IC3302

C3332

C3333

C3334

IC3304

C3335

R3501

D3311

IC3305

C3336

C3337

R3504

C3338

R3505

R3506

R3312

D3316

R3313

D3317

R3314

D3318

R3315

R3316

R3317

R3319

C3341

C3342

C3343

C3344

R3510

D3320

C3345

C3346

C3347

D3323

C3348

R3320

D3324

R3515

C3349

R3321

R3516

R3322

R3323

R3517

R3324

R3325

C3350

R3329

C3351

C3352

C3353

C3354

C3355

C3356

C3357

C3358

C3359

R3332

R3334

R3335

R3336

R3338

C3361

R3339

C3362

C3363

C3364

C3365

C3366

C3367

R3340

C3368

C3369

R3343

R3344

FB1504

R3345 R3346

R3347

R3348

C3370 C3371

R3349

C3373

C3377

C3378

R3350

C3379

R3351 R3352

L1102

R3353

R3354

R3355

R3356

C3380

C3381

FB9601

C3384

L1301

C3387

C3388

FB9608

R3361

FB9609

FB4401

R3362

FB4402

R3363

FB4403

R3364

FB4404

FB4405

FB4406

R3368

FL3301

C3391

FL3302

FL3303

FB9613

FL3304

FB9614

R549

R3370

C3399

R3372

R3373

R3374

FL3501

R3375

FL3502

R3376

R3378

R3379

R3380

R3381

R3382 R3383 R3384

R3385

L9605

R3386

R3387

R3389

R3390

R3391

R3392

R3393

R3394

R3395

R3396

R572

R3397

R573

R3399

R577

C542

C543C544

C545

R2611

R2612

C570

C8601

C8602

C8603

C8604

Q8601

D516

C576

D517

C3400

D518

C8608

C3401

C579

D519

X3301

C3402

C3403

C3404

C8610

R2636

C8616C8617C8618

IC509

C8619

C8620 C8621

R8406

C8622

C8623

C8624

FB3301

IC8401

C8627

FB3304

C8628

FB3305

C8629

R8601

FB3306

FB3307

R8603

FB3308

FB3309

R8606

R8607

C8630

R3401

IC8601

C1102

IC8602

C8633

FB3310

R3404

C8634

FB3311

Q1101

FB3312

Q1102

Q1103

FB3314

R8610

FB3315

FB3316

FB3317

R8613

R8614

R8615

R8616

R8617

R3410

C1111

C1112

C1307

C1113

C1114

C1309

C1115

C8452

C1116

C8453

C1117

Page 87

LC-32DH57E-BK/RU-BK/S-BK

7 – 5

[2] LED UNIT/KEY UNIT PRINTED WIRING BOARD

1097654

1311 191816151412 17

LED Unit (Side-A) LED Unit (Side-B) KEY Unit (Side-A)LED Unit (Chip Parts Side-A)

P101

Q102

Q103

Q104

Q105

R101

R102

R104

R105

R106

R107

R108

R109

R110

R117

R132

R135

R136

R137

R138

C102

C104

C105

C106

D101

D103

D116

IC101

Page 88

LC-32DH57E-BK/RU-BK/S-BK

7 – 6

[3] POWER UNIT PRINTED WIRING BOARD

1097654

1311 191816151412 17

POWER Unit (Side-A)

Page 89

LC-32DH57E-BK/RU-BK/S-BK

7 – 7

1097654

1311 191816151412 17

POWER Unit (Chip Parts Side-A)

C7101

C7102

C7105

Q7101

Q7102

C7106

C7107

Q7104

C7109

C7115

D7103

D7105

FB7201

R7101

D7106

R7102

D7107

R7103

D7108

D7109

R7105

R7106

R7107

R7108 R7109

IC7101

D7110

D7114

R7110

R7111

R7112

R7114

R7115 R7116

R7117

R7118

R7119

R7120

R7121

R7123

R7124

R7125

R7126

R7127

R7128

R7129

R7130

R7131

R7132

R7133

R7134

R7135

R7136

RJ1

RJ2

RJ3

C7203

C7204

Q7201

C7206

Q7202

Q7203

Q7205

Q7206

Q7207

Q7208

Q7209

C7211

Q7210

C7214

C7215

C7217

C7219

FB7101

FB7105

FB7106

FB7107

C7224

C7225

C7226

D7203

D7204

C7229

D7205

R7201

R7202

D7207

R7203

D7208

R7204

D7209

R7206

R7207

C7230

R7208

C7231

R7209

D7210

D7211

D7216

R7212

R7213

D7218

D7219

R7219

D7220

D7221

D7222

D7223

R7220

D7225

R7221

D7226

R7222

R7223

D7228

R7224

D7229

R7225

R7226

R7227

R7228

R7229

D7230

D7231

D7232 D7233

D7234

R7230

R7231

R7232

R7233

R7234

R7235 R7236

R7237

R7238

R7239

R7240

R7241

R7242

R7243

R7244

R7245

R7246

R7247

R7248

R7249

R7250

R7251

R7252 R7253

R7254

R7255

R7256

R7257

R7258

R7259

R7260

R7261

R7262

R7263

R7264

R7265

R7266

R7267

R7268

R7269

R7271

R7273

R7276

R7277

R7278

R7279

R7280 R7281

Page 90

LC-32DH57E-BK/RU-BK/S-BK

7 – 8

[4] INVERTER UNIT PRINTED WIRING BOARD

1097654

1311 191816151412 17

INVERTER Unit (Side-A)

Page 91

LC-32DH57E-BK/RU-BK/S-BK

7 – 9

1097654

1311 191816151412 17

INVERTER Unit (Chip Parts Side-A)

C7700

C7701

C7702

C7703

C7704

Q7700

C7705

Q7701

C7706

Q7702

C7707

Q7703

Q7704

C7708

Q7705

C7709

Q7706 Q7707

C7900

Q7708

Q7709

C7901

C7902

C7903

C7710

Q7900Q7901

C7711

C7906

Q7902

Q7903

C7907

C7714

Q7904

C7715

Q7905

C7716

Q7906

C7717

C7718

C7719

C7910

C7911

C7914

C7720

C7915

C7721

C7916

C7722

C7723

C7917

C7724

D7700

C7918

D7701

C7919

C7725

C7726

C7727

R7700

R7701

R7702

R7703

R7704

C7920

R7705

C7921

R7706

C7922

R7707

C7923

R7708

C7924

IC7700

D7900

R7709

C7925

D7901

C7926

D7902

C7927

D7903

R7900

C7928

D7904

R7901

C7929

D7905

R7902

R7903

R7710

R7904

R7711

R7905

R7906

R7712

R7713

R7907

R7714

R7908

IC7900

C7930

RJ10

R7909

R7715

C7931

RJ11

R7716

RJ12

C7932

R7717

C7933

R7718

C7934

R7719

D7912

D7913

D7914

R7910

R7911

D7915

D7916

R7912

R7913

D7917

R7914

D7918

R7720

R7721

R7915

D7919

R7722

R7916

R7723

R7917

R7918

R7724

R7725

R7919

C7941

R7726

C7942

R7727

C7943

R7728

D7920

C7944

R7729

D7921

C7945

D7922

C7946

D7923

R7920

D7924

R7921

D7925

R7922

D7926

R7923

D7927

R7730

R7924

D7928

R7925

R7731

D7929

R7926

R7732

R7733

R7927

R7734

R7928

R7929

R7735

R7736

R7737

R7738

D7930

R7739

R7930

R7931

R7932

R7933

R7934

R7740

R7935

R7741

R7742

R7936

R7743

R7937

R7744

R7938

R7745

R7939

R7746

R7747

R7748

R7749

R7940

R7941

R7942

R7943

R7750

R7944

R7751

R7945

R7752

R7946

R7753

R7947

R7754

R7948

R7755

R7949

R7756

R7757

R7758

R7759

R7950

R7951

R7952

R7953

R7760

R7954

R7955

R7761

RJ1

R7762

R7956

RJ2

R7763

RJ3

RJ4

RJ5

RJ6

RJ7

RJ8

RJ9

C7801

C7802

C7803

C7804

Q7800

Q7801

Q7802

Q7803

C7808

Q7804

C7809

Q7805

Q7806

Q7808

C7810

C7811

D7800

D7801

D7802

D7803

D7804

R7800

R7801

D7805

D7806

R7802

R7803

D7807

R7804

D7808

R7805

D7809

R7806

R7807

R7808

R7809

R7810

R7811

R7812

R7813

R7814

R7815

R7816

R7817

R7818

R7819

R7820

R7821

R7822

R7823

R7824

Page 92

LC-32DH57E-BK/RU-BK/S-BK

8 – 1

LC-32DH57E-BK

Service Manual

CHAPTER 8. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIAGRAM

VOLTAGE MEASUREMENT CONDITION:

1. The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 220-240V.

Signals are fed by a colour bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.

INDICATION OF RESISTOR & CAPACITOR:

RESISTOR

1. The unit of resistance “Ω” is omitted.

(K=kΩ=1000 Ω, M=MΩ).

2. All resistors are ± 5%, unless otherwise noted.

(K= ± 10%, F= ± 1%, D= ± 0.5%)

3. All resistors are 1/16W, unless otherwise noted.

CAPACITOR

1. All capacitors are µF, unless otherwise noted.

(P=pF=µµF).

2. All capacitors are 50V, unless otherwise noted.

CAUTION:

This circuit diagram is original one, therefore there may be a slight difference from yours.

SAFETY NOTES:

1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS.

2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.

IMPORTANT SAFETY NOTICE:

PARTS MARKED WITH “ ” ( ) ARE IMPORTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND PERFORMANCE OF THE SET.

Page 93

LC-32DH57E-BK/RU-BK/S-BK

8 – 2

[2] SCHEMATIC DIAGRAM

AND SHADED COMPONENTS=SAFETY RELATED PARTS

1097654

1311 191816151412 17

MAIN Unit-1

Page 94

LC-32DH57E-BK/RU-BK/S-BK

8 – 3

1097654

1311 191816151412 17

MAIN Unit-2

Page 95

LC-32DH57E-BK/RU-BK/S-BK

8 – 4

1097654

1311 191816151412 17

MAIN Unit-3

Page 96

LC-32DH57E-BK/RU-BK/S-BK

8 – 5

1097654

1311 191816151412 17

MAIN Unit-4

Page 97

LC-32DH57E-BK/RU-BK/S-BK

8 – 6

1097654

1311 191816151412 17

MAIN Unit-5

Page 98

LC-32DH57E-BK/RU-BK/S-BK

8 – 7

1097654

1311 191816151412 17

MAIN Unit-6

Page 99

LC-32DH57E-BK/RU-BK/S-BK

8 – 8

1097654

1311 191816151412 17

MAIN Unit-7

Page 100

LC-32DH57E-BK/RU-BK/S-BK

8 – 9

1097654

1311 191816151412 17

MAIN Unit-8