SHARP LC3237D62U, LC-32D62U, LC-37D62U. Service Manual

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LC-32D62U/LC-37D62U 1st

SERVICE MANUAL

No. S17A9LC32D62U

LCD COLOR TELEVISION

LC-32D62U

DRAFT

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.

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

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

PRECAUTIONS A PRENDRE LORS DE

LA REPARATION...............................................ii

PRECAUTIONS FOR USING LEAD-FREE

SOLDER ........................................................... iii

CHAPTER 1. SPECIFICATIONS

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

CHAPTER 2. OPERATION MANUAL

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

CHAPTER 3. DIMENSIONS

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

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS ................... 4-1

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE ....................... 5-1

LC-37D62U

32D62U) ........................................................8-1

[2] OVERALL WIRING DIAGRAM (LC-

37D62U) ........................................................8-3

[3] SYSTEM BLOCK DIAGRAM.........................8-5

[4] MAIN BLOCK DIAGRAM...............................8-7

CHAPTER 9. PRINTED WIRING BOARD ASSEMBLIES

[1] MAIN Unit ...................................................... 9-1

[2] TERMINAL Unit ............................................. 9-9

[3] R/C, LED Unit ..............................................9-15

[4] KEY Unit ......................................................9-16

CHAPTER 10. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM.......................................................... 10-1

[2] R/C, LED Unit ..............................................10-2

[3] MAIN Unit ....................................................10-3

[4] TERMINAL Unit .........................................10-49

[5] KEY Unit ....................................................10-53

Parts Guide

CHAPTER 6. TROUBLE SHOOTING TABLE

[1] TROUBLE SHOOTING TABLE...................... 6-1

CHAPTER 7. MAJOR IC INFORMATIONS

[1] MAJOR IC INFORMATIONS.......................... 7-1

CHAPTER 8. OVERALL WIRING/BLOCK DIAGRAM

[1] OVERALL WIRING DIAGRAM (LC-

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-32D62U/LC-37D62U 1st

SAFETY PRECAUTION

Service Manual

IMPORTANT SERVICE SAFETY PRECAUTION

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

WARNING

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

2. Disconnect AC power before servicing.

CAUTION: FO R C O N T I N U E D PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE.

F701 (250V 8A) F4702 (250V 4A)

• 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 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

DVM

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 120 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.

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

TO EXPOSED METAL PARTS

AC SCALE

1.5k ohm 10W

0.15µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

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.

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LC-32D62U/LC-37D62U 1st

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ

AVERTISSEMENT

N'entreprendre aucune modification de tout circuit. C'est dangereux.

Débrancher le récepteur avant toute réparation.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE

F701 (250V 8A) F4702 (250V 4A)

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes.

Inspecter tous les faisceaux de câbles pour s'assurer que les fils

3. ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.

Inspecter tous les dispositifs de protection comme les boutons de

4. commande non-métalliques, les isolants, le dos du coffret, les couvercles ou blindages de réglage et de compartiment, les réseaux de résistancecapacité, les isolateurs mécaniques, etc.

S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la

5. fuite de courant, de la facon suivante:

Brancher le cordon d'alimentation directem-ent à une prise de cou-

• rant de 120V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

• 10 watts en parallèle avec un condensateur de 0.15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à la terre.

Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour

• mesurer la chute de tension en travers de la résistance.

Toucher avec la sonde d'essai les pièces métalliques exposées qui

• présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson, etc.) et mesurer la chute de tension CA en-travers de la résistance. Toutes les vérifications doivent être refaites après avoir inversé la fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.) La tension de pointe mesurèe ne doit pas dépasser 0.75V (correspondante au courant CA de pointe de 0.5mA). Dans le cas contraire, il y a une possibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

DVM

ECHELLE CA

1.5k ohm 10W

0.15

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les téléviseur ACL présentent des caractéristiques spéciales relatives à la sécurité, qui ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être nécessairement augmentée en utilisant des pièces de remplacement étalonnées pour haute tension, puissance, etc. Les pièces de remplacement qui présentent ces caractéristiques sont identifiées dans ce manuel; les pièces électriques qui présentent ces particularités sont identifiées par la marque " " et hachurées dans la liste des pièces de remplacement et les diagrammes schématiques.

Pour assurer la protection, ces pièces doivent être identiques à celles utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas les mêmes caractéristiques que les pièces recommandées par l'usine, indiquées dans ce manuel, peut provoquer des électrocutions, incendies, radiations X ou autres accidents.

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LC-32D62U/LC-37D62U 1st

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:

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

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

PARTS CODE

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

PRICE RANK

PART

DELIVERY

DESCRIPTION

iii

Page 5

LC-32D62U/LC-37D62U 1st

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

LC-32D62U/LC-37D62U 1st

Service Manual

Item

LCD panel

32" LCD

Number of dots

TV Function

TV-standard (CCIR)

Receiving Channel

VHF/UHF

CATV

Digital Terrestrial Broadcast (8VSB)

Digital cable (64/256 QAM)

Audio multiplex

Audio out

Terminals Rear INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

DIGITAL AUDIO OUTPUT

OUTPUT

ANTENNA

OSD language

Power Requirement

Power Consumption

Weight

TV + stand

TV only

Dimension (W H D)



TV + stand

TV only

Operating temperature

Emergency alert messages via Cable are unreceivable.

The dimensional drawings are shown on the inside back cover.

6,220,800 dots (1920 1080 3 dots)

American TV Standard ATSC/NTSC System

VHF 2-13ch, UHF 14-69ch

1-135ch (non-scrambled channel only)

2-69ch

1-135ch (non-scrambled channel only)

BTSC System

10W 2

AV in, COMPONENT in (Recommend to connect game console)

S-VIDEO in, AV in

Audio in, COMPONENT in

HDMI in with HDCP

Audio in, HDMI in with HDCP

Optical Digital audio output 1 (PCM/Dolby Digital)

Audio out

75 Unbalance, F Type 1 for Analog (VHF/UHF/CATV) and Digital (AIR/CABLE)

English/French/Spanish

AC120V,60Hz

160 W (0.9 W Standby with AC 120V)

44.1 lbs./20.0 kg

36.4 lbs./16.5 kg

++ +

Model: LC-32D62U

Advanced Super View & BLACK TFT

37"

Model: LC-37D62U

Advanced Super View & BLACK TFT

LCD



198 W (0.9 W Standby with AC 120V)

52.9 lbs./24.0 kg

44.1 lbs./20.0 kg

/64239/32103/4inch



/642059/64353/64inch





/16253/4111/2inch

/16235/8353/64inch



32°F to 104°F (0°C to 40°C)

As part of 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.

1 – 1

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LC-32D62U/LC-37D62U 1st

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

Part names

TV (Front)

Service Manual

TV (Rear)

Remote control sensor

OPC sensor*

HDMI terminal (INPUT 4)

HDMI terminal (INPUT 5)

DIGITAL AUDIO OUTPUT terminal

Channel buttons

(CH /)

Volume buttons

(VOL /)

OPC indicator*

SLEEP indicator**

POWER indicator**

INPUT button

POWER button

AUDIO terminals (INPUT 5)

Antenna/Cable in

2 – 1

INPUT 3 terminals

INPUT 2 terminals

AUDIO OUTPUT terminals

INPUT 1 terminals

AC INPUT terminal

Page 7

Part names

LC-32D62U/LC-37D62U 1st

Remote control unit

114

2 3

7 8

11 23

13 27

1 TV POWER: Switch the TV power on or enters

standby.

2DISPLAY:Display the channel information. 3 SOURCE POWER: Turns the power of the external

equipment on and off.

4 External equipment operational buttons: Operate

the external equipment.

50_9: Set the channel. 6 (DOT):

•

7INPUT:Select a TV input source. (TV, INPUT 1,

INPUT2,INPUT3,INPUT4,INPUT5)

8 VOL / : Set the volume. 9 SURROUND: Select Surround settings.

10 FREEZE: Set the still image. Press again to return to

normal screen.

11 EXIT: Turn off the menu screen. 12 SLEEP: Set the sleep timer. 13 AUDIO: Selects the MTS/SAP or the audio mode

during multi-channel audio broadcasts.

14 FUNCTION: Switches the remote control for TV,

CBL/SAT, VCR, DVD and AUDIO operation. Indicator lights up for the current mode.

* To enter the code registration mode, you need to press FUNCTION and DISPLAY at the same time.

15 LIGHT : When pressed all buttons on the remote

control unit will light. The lighting will turn off if no operations are performed within about 5 seconds. This button is used for performing operations in lowlight situations.

16 VIEW MODE: Select the screen size.

17 ENT: Jumps to a channel after selecting with the 0_9

buttons.

18 FLASHBACK: Return to the previous channel or

external input mode.

19 CH / : Select the channel. 20 MUTE: Mute the sound. 21 MENU: Display the menu screen. 22 ////ENTER: Select a desired item on the

screen.

23 RETURN: Return to the previous menu screen. 24 FAVORITE CH

A, B, C, D: Select 4 preset favorite channels in 4

different categories. While watching, you can toggle the selected channels

by pressing A, B, C and D.

25 FAVORITE: Set the favorite channels. 26 CC: Display captions from a closed-caption source.

NOTE

When using the remote control unit, point it at the TV.

27 AV MODE: Select an audio or video setting.

(When the input source is TV, INPUT 1, 2 or 3: STANDARD, MOVIE, GAME, USER, DYNAMIC (Fixed), DYNAMIC. When the input source is INPUT 4 or 5: STANDARD, MOVIE, GAME, PC, USER, DYNAMIC (Fixed), DYNAMIC.)

2 – 2

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LC-32D62U/LC-37D62U 1st

Appendix

Removing the stand

Before detaching (or attaching) stand, unplug the AC cord from the AC INPUT terminal.

CAUTION

Do not remove the stand from the TV unless using an optional wall mount bracket to mount it.

Before attaching/detaching stand

Before performing work make sure to turn off the TV. Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being damaged.

1 2

Unfasten the four screws used to secure the stand in place.

NOTE

To attach the stand, perform the above steps in reverse order.

Hex key

Detach the stand from the TV. (Hold the stand so it will not drop from the edge of the base area.)

Setting the TV on the wall

CAUTION

This TV should be mounted on the wall only with the AN-37AG2 (SHARP) wall mount bracket. The use of other wall mount brackets may result in an unstable installation and may cause serious injuries. Installing the TV requires special skill that should only be performed by qualified service personnel. Customers should not attempt to do the work themselves. SHARP bears no responsibility for improper mounting or mounting that results in accident or injury.

Using an optional bracket to mount the TV

You can ask a qualified service professional about using an optional AN-37AG2 bracket to mount the TV to the wall. Carefully read the instructions that come with the bracket before beginning work.

Hanging on the wall

About setting the TV angle

AN-37AG2 wall mount bracket.

Model

LC-32D62U

LC-37D62U

Vertical mounting

NOTE

Detach the cable clamps on the rear of the TV when using the optional mount bracket. Due to the terminal configuration on this TV, when you wall-mount this model, make sure there is enough space between the wall and the TV for the cables.

Angular mounting

Angle of TV

0/5/10°

2 – 3

Page 9

Appendix

Troubleshooting

LC-32D62U/LC-37D62U 1st

Problem

••

No power

•

Unit cannot be operated.

Remote control unit does not

•

operate.

•

Picture is cut off/with sidebar screen.

Strange color, light color, or color

•

misalignment

Power is suddenly turned off.

•

Check if you pressed TV POWER on the remote control unit. If the indicator on the TV does not light up, press POWER on the TV.

•

Is the AC cord disconnected?

•

Has the power been turned on?

•

External influences such as lightning, static electricity, may cause improper operation. In this case, operate the unit after first turning on the power of the TV or unplugging the AC cord and replugging it in after 1 or 2 minutes.

•

Is the FUNCTION set correctly? Set it to the TV setting position.

•

Are batteries inserted with polarity ( , ) aligned? Are batteries worn out? (Replace with new batteries.)

•

Are you using it under strong or -fluorescent lighting? Isa-fluorescent light illuminated near the remote control sensor?

•

Is the image position correct?

•

Are screen mode adjustments such as picture size made correctly?

•

Adjust the picture tone. Is the room too bright? The picture may look dark in a room that is too bright.

•

Check the input signal setting.

•

Is the sleep timer set?

•

Check the power control settings.

•

The unit's internal temperature has increased. Remove any objects blocking vent or clean.

Possible Solution

No picture

•

No sound

Is connection to other components correct?

•

Is correct input signal source selected after connection?

•

Is the correct input selected?

•

Is picture adjustment correct? Is "On" selected in "Audio Only"?

•

Is a non-compatible signal being input?

•

Is the volume too low?

•

Is "Variable" selected in "Output Select"?

•

Have you pressed MUTE on the remote control unit?

Troubleshooting-Digital broadcasting

The error message about reception of broadcast

The example of an error message

displayed on a screen

•

Failed to receive broadcast.

No broadcast now.

•

Error code

•

E202

E203 Check the broadcast time in the program guide.

Check the antenna cable. Check that the antenna is correctly setup.

•

Possible Solution

Cautions regarding use in high and low temperature environments

When the unit 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 unit will recover when the temperature returns to normal. Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near a

•

heater, as this may cause the cabinet to deform and the Liquid Crystal panel to malfunction. Storage temperature: 4°F to 140°F ( 20°C to 60°C)

2 – 4

Page 10

LC-32D62U/LC-37D62U 1st

Preparation

Connecting a PC

When connecting to a PC with an HDMI terminal. (INPUT 4 or 5)

Example

(commercially available)

NOTE

•

The HDMI terminals only support digital signal.

HDMI cable

PC compatibility chart

It is necessary to set the PC correctly to display XGA and WXGA signal.

PC Resolution Horizontal Frequency Vertical Frequency VESA Standard

70 Hz

60 Hz 72 Hz 75 Hz 56 Hz 60 Hz 72 Hz 75 Hz 60 Hz 70 Hz 75 Hz 60 Hz

720 x 400

VGA

XGA 1024 x 768

WXGA 1360 x 768

SXGA

640 x 480

800 x 600SVGA

1280 x 1024

31.5 kHz

37.9 kHz

37.5 kHz

35.1 kHz

37.9 kHz

48.1 kHz

46.9 kHz

48.4 kHz

56.5 kHz

60.0 kHz

47.7 kHz

64.0 kHz 60 Hz

O O O O O O O O O O O O

DDC is a registered trademark of Video Electronics Standards Association. Power Management is a registered trademark of Sun Microsystems, Inc. VGA and XGA are registered trademarks of International Business Machines Co., Inc.

2 – 5

Page 11

Basic adjustment settings

Menu items for TV/INPUT 1/2/3 Menu items for HDMI

LC-32D62U/LC-37D62U 1st

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

Color Temp. Black 3D-Y/C Monochrome Film Mode Range of OPC

Reset

Treble Bass Balance Surround Reset

No Signal Off No Operation Off

Picture

Audio

Power Control

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

Color Temp. Black Monochrome Film Mode Range of OPC

Reset

Treble Bass Balance Surround Reset

No Signal Off No Operation Off

Picture

Audio

Power Control

EZ Setup CH Setup Antenna Setup-DIGITAL Input Skip Input Label Parental CTRL Position Language Reset

Audio Only Digital Noise Reduction Input Select Output Select Color System Caption Setup Program Title Display Favorite CH

Audio Setup

Setup

Option

Digital Setup

Setup

Input Skip Input Signal Input Label Position Language Reset

Option

Audio Only Digital Noise Reduction HDMI Setup Output Select

NOTE

Some menu items may not be displayed depending on the

•

selected input source.

2 – 6

Page 12

LC-32D62U/LC-37D62U 1st

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

Service Manual

LC-32D62U

(591)

(200)

Unit: Inch/(mm)

/64(

797)

275/8(701.4)

(531)

(60)

(85)

/8(200)

(396.1)

(344)

(88)

/32(507)

(97)

LC-37D62U

(654)

(200)

103/4(273)

/16(919)

3225/64(822.6)

(600)

(54)

(85)

77/8(200)

(463.8)

(374)

(116)

/64(540)

(97)

3 – 1

/2(292)

Page 13

LC-32D62U/LC-37D62U 1st

CHAPTER 4. REMOVING OF MAJOR PARTS

Service Manual

[1] REMOVING OF MAJOR PARTS

1. Remove the SD Card Cover.

2. Remove the 4 lock screws and detach the Stand Base Ass'y.

3. Remove the 9 lock screws, 3 lock screws and detach the Rear Cabinet. (LC-32D62U)

Remove the 9 lock screws, 4 lock screws and detach the Rear Cabinet. (LC-37D62U)

SD Card Cover

LC-32D62U/LC-37D62U 1st

Front Cabinet

Stand Base Ass'y

Rear Cabinet

LC-37D62U Only

4 – 1

Page 14

LC-32D62U/LC-37D62U 1st

4. Remove the 2 lock screws and detach the Stand Assist Angle.

5. Remove the 4 lock screws and detach the Center Angle-L and R.

6. Remove the 1 lock screw and detach the Stand Area Cover.

7. Remove the 4 lock screws and detach the Stand Fix Angle.

8. Remove the 6 lock screws and detach the MAIN Shield.

MAIN Shield

LC-32D62U

Center Angle-R

Center Angle-L

LC-37D62U

Center Angle-R

Center Angle-L

Stand Fix Angle

Stand Area Cover

Stand Assist Angle

LC-37D62U

Stand Fix Angle

Stand Area Cover

Stand Assist Angle

LC-32D62U

4 – 2

Page 15

9. Disconnect all the connectors from all the PWBs.

10.Remove the Top Cover Ass'y. Remove the 2 lock screws from the Top Cover Ass'y and detach the KEY Unit.

Top Cover

[KM]

KEY Unit

LC-32D62U/LC-37D62U 1st

[KM]

[F-RCA wire]

[SP]

[LP]

[LV]

[LB]

[PH]

[PD]

[SA][FC][MA]

[RA]

[CN5] (32D62U) [CN4] (37D62U)

[CN1]

[CN2] (37D62U)

[CN4] (32D62U) [CN3] (37D62U)

[CN2] (32D62U)

[PH]

[PD]

[LB] (32D62U)

[LA]

[LB] (37D62U)

4 – 3

Page 16

LC-32D62U/LC-37D62U 1st

11.Remove the 4 lock screws and detach the Speaker-L and R.

12.Remove the 2 lock screws and detach the R/C, LED Unit.

13.Remove the 5 lock screws and detach the Tray Chassis.

Tray Chassis

Speaker-R

Speaker-L

R/C, LED Unit

4 – 4

Page 17

14.Remove the 2 lock screws and detach the Jack Angle.

15.Remove the 6 lock screws and detach the POWER Unit.

16.Remove the 4 lock screws and detach the TERMINAL Unit.

17.Remove the 5 lock screws, 2 lock rivets and detach the MAIN PWB Radiator and MAIN Unit.

LC-32D62U/LC-37D62U 1st

MAIN PWB Radiator

MAIN Unit

POWER Unit

Jack Angle

TERMINAL Unit

4 – 5

Page 18

LC-32D62U/LC-37D62U 1st

18.Remove the 6 lock screws and detach the Rug Angle Top-L and R. (LC-32D62U)

Remove the 4 lock screws and detach the Rug Angle Top-L and R. (LC-37D62U)

19.Remove the 6 lock screws and detach the Rug Angle Bottom-L and R.

20.Remove the 3 lock screws and detach the Chassis Fix Angle Top. (LC-32D62U)

Remove the 5 lock screws and detach the Chassis Fix Angle Top. (LC-37D62U)

21.Remove the LCD Panel Module.

LC-32D62U

Rug Angle Top-R

Rug Angle Bottom-R

Chassis Fix Angle Top

Rug Angle Bottom-L

Rug Angle Top-L

LC-37D62U

Rug Angle Top-R

Rug Angle Bottom-R

Chassis Fix Angle Top

Rug Angle Top-L

Rug Angle Bottom-L

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CHAPTER 5. ADJUSTMENT

Service Manual

[1] ADJUSTMENT PROCEDURE

The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.

1. After replacement of any PWB unit and/or IC for repair, please note the following.

When replacing the following units, make sure to prepare the new units loaded with updated software.

MAIN Unit: DUNTKE028WE06

2. Upgrading of each microprocessor software

CAUTION: Never “POWER OFF” the unit when software upgrade is ongoing.

Otherwise the system may be damaged beyond recovery.

2.1. Software version upgrade

The model employs the following software.

•Main software

• Monitor microprocessor software

The main software and the monitor microprocessor software can be upgraded by using a general-purpose SD memory card.

The followings are the procedures for upgrading, explained separately for each of the main software, the monitor microprocessor software.

2.2. Main software version upgrade

2.2.1 Get ready before you start

• SD memory card of 32MB or higher capacity

• PC running on Windows 98/98SE/ME/2000/XP operating system

• SD memory card reader/writer with USB connectivity

• SD memory card formatting software

(Downloadable at http://panasonic.jp/support/audio/sd/download/sd_formatter_e.html)

2.2.2 Preparations

To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start. Follow the steps below and create the SD card for version upgrade.

1. Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format]. (When you have the drive options, select the drive where the SD card is inserted before you proceed.)

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2. When the formatting is over, the following window appears. Click [OK].

3. Click [Exit] to finish the formatting.

NOTE: When you are done, take out the SD card once to make sure it is finished, and then insert it again.

4. Copy the binary image file D62UAxxx.SDC (named temporarily) for version upgrade to the root directory (folder) of the SD card drive.

NOTE: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files for version upgrade.

Now the SD card for version upgrade is ready.

2.2.3 Upgrading the software

1. Turn off the AC power (Unplug the AC power cord).

2. Insert the upgrading SD card (prepared as instructed above) into the service slot.

NOTE: Be careful not to insert the SD card in the wrong way. Otherwise the card may come into the set and fail to come out.

3. Turn on the AC power (Plug in the AC power cord).

4. A couple to dozen seconds after the set starts, the upgrade screen below shows up.

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5. If any of the procedures fails, the following upgrade failure screen shows up. For the failing procedure, the “NG” marking turns red.

NOTE: In such case, try to upgrade the software again. If it still fails, the hardware may be in trouble.

6. When all the procedures are complete, the following upgrade success screen shows up. The new software version can be confirmed on screen. The version number appears when each item has been successfully upgraded. Finally the main version number appears on screen.

7. Turn off the AC power (Unplug the AC power cord). Take out the upgrading SD card.

8. Now the software has been upgraded.

NOTE: Then get the set started and call the process adjustment screen 1/28 to check the main software version.

CAUTION: 1) Do not take out and put in the SD memory card during formatting.

2) With the SD formatted, all the data stored on the medium will be deleted.

3) Do not start the SD formatting with the memory card's WRITE PROTECT switch still on.

4) If the SD memory card format software does not recognize the SD memory card, take out and put in the SD memory card again, and click the “UPDATE” button.

5) After checking the performance, use the set under its interface environment.

6) The SD formatting is impossible on drives that are not recognized “REMOVABLE”.

2.3. Upgrading the monitor microprocessor software

2.3.1 Kit

Have the above “Upgrading the main software” kit or equivalent at hand.

2.3.2 Preparations

As discussed in “Upgrading the main software” earlier, create the SD card for upgrading the monitor microprocessor software. For this SD card, use the monitor microprocessor upgrading binary image file.

2.3.3 Upgrading procedure

To follow the monitor microprocessor software upgrading, the monitor screen upgrade progress indicator and the flashing power LED indicator can be used.

1. Turn off the AC power (Unplug the AC power cord).

2. Insert the upgrading SD card (prepared as instructed above) into the service slot at the back of the set. Insert the SD card with its logo-printed face upward (visible). Be careful not to insert the SD card in the wrong way. Otherwise the card may come into the set and fail to come out.

3. Turn on the AC power (Plug in the AC power cord).

CAUTION: Now the monitor microprocessor software starts getting upgraded. Be very careful not to turn off the power while the software is being

upgraded. Otherwise the software will fail to upgrade itself and the set will fail to get started.

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4. A couple to dozen seconds after the set starts, the upgrade screen below shows up. The upgrade progress is indicated on screen. The power LED indicator goes out once and then starts flashing in green. (It takes 2-3 minutes to get the monitor microprocessor software upgraded.)

5. If the procedure fails, the following upgrade failure screen shows up and the “NG” marking turns red. The power LED indicator fails to start flashing in green. Even if the usual screen reappears in several seconds, do the procedure from Step “1” again.

NOTE: In case of failure, try to upgrade the software again. If it still fails, the hardware may be in trouble.

6. When the procedure is complete, the following upgrade success screen shows up. The new software version can be confirmed on screen. The upgrade success can also be confirmed when the power LED indicator and the OPC LED indicator start flashing alternately in green, respectively. Double-check the upgrading and turn off the AC power (Unplug the AC power cord). Take out the upgrading SD card. Now the software has been upgraded.

Finally get the set started and call the process adjustment screen 1/28 to check the monitor microprocessor software version.

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3. Entering and exiting the adjustment process mode

1) Before entering the adjustment process mode, the AV position RESET in the video adjustment menu.

2) While holding down the “VOL (–)” and “INPUT” keys at a time, plug in the AC cord of the main unit to turn on the power.

The letter “<K>” appears on the screen.

3) Next, hold down the “VOL (–)” and “CH ( )” keys at a time.

(The “VOL (–)” and “CH ( )” keys should be pressed and held until the display appears.)

Multiple lines of blue characters appearing on the display indicate that the unit is now in the adjustment process mode.

When you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.

4) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)

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

4. Remote controller key operation and description of display in adjustment process mode

1) Key operation

Remote controller key Main unit key Function

CH ( / ) CH ( / ) VOL (+/–) VOL (+/–) Changing a selected item setting (+1/ –1) Cursor (UP/DOWN) ————— Turing a page (PREVIOUS/NEXT) Cursor (LEFT/RIGHT) ————— Changing a selected line setting (+10/ –10) INPUT ————— Input switching (toggle switching)

ENTER ————— Executing a function

2) Description of display

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

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

(TUNER→INPUT1→INPUT2→INPUT3→INPUT4→INPUT5→)

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

(1) Current page/ (5) Destination

Total pages

1/28 [INFO] INPUT5 AUTO USA 46_UNDER

MAIN Version 0.90 ( U 2006/11/21 1A)

BOOT Version D62UB 1.01

Monitor Version 0.9

EQ DATACHECKSUM ROM (8) Parameters

TEMPAERATURE 7B

LAMP ERROR 0

NORMAL STANDBY CAUSE

ERROR STANDBY CAUSE 1) 0 2) 0 3) 0

(2) Current page title

(3) Current selected input

(4) Current color system

0H 0M 0H 0M 0H 0M

4) 0 5) 0 0H 0M 0H 0M

(6) LCD Panel size/Speaker type

(LC-32D62U: 32_UNDER) (LC-37D62U: 37_UNDER)

(7) Adjustment

process menu header

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5. List of 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 [INFO]

1 MAIN Version Main software version 2BOOT Version 3 Monitor Version Monitor software version 4 EQ DATA CHECKSUM Audio data checksum 5 TEMPERATURE CPU temperature 6 LAMP ERROR Number of termination due to lamp error 7 NORMAL STANDBY CAUSE Refer to *1 under the list for details 8 ERROR STANDBY CAUSE Refer to *2 under the list for details

2 [INIT]

1 INDUSTRY INIT (Cause) 2 INDUSTRY INIT Initialization to factory settings . 3 HOTELMODE Hotel mode 4 Center Acutime Accumulated main operation time 5 RESET Reset 6 BacklightAcutime Accumulated monitor operation time 7 RESET Reset 8 LAMP ERROR RESET Reset LAMP ERROR

9 VIC XPOS X-coordinate setting for VIC READ 10 VIC YPOS Y-coordinate setting for VIC READ 11 VIC COLOR Collected color data setting for VIC READ 12 VIC SIGNAL TYPE Signal type setting for VIC READ 13 VIC READ Picture level acquisition function Level appears in green on the upper right.

3 [N358MAIN]

1 N358 ALL ADJ CVBS and TUNER signal level adjustment

2 N358 MAIN ADJ CVBS signal level adjustment

3 TUNER DAC ADJ TUNER signal level adjustment

4 N358 MAIN CONTRAST CVBS and TUNER contrast adjustment values

5 TUNER A DAC TUNER adjustment value

6 VCOM ADJ VCOM adjustment value

4 [TUNER TEST]

1 TUNER VCHIP TEST(69ch) Tuning test and VCHIP test (69 ch)

2 TUNER VCHIP TEST(7ch) Tuning test and VCHIP test (7 ch)

3 TUNER VCHIP TEST(10ch) Tuning test and VCHIP test (10 ch)

4 TUNER VCHIP TEST(15ch) Tuning test and VCHIP test (15 ch)

5 [COMP15KMAIN]

1 COMP15K MAIN ADJ Component 15K picture level adjustment (main)

2 COMP15K CONTRAST Contrast adjustment value

3 COMP15K MAIN Cb GAIN Cb GAIN adjustment value

4 COMP15K MAIN Cr GAIN Cr GAIN adjustment value

5 COMP15K Y OFFSET Y OFFSET adjustment value

6 COMP15K Cb OFFSET Cb OFFSET adjustment value

7 COMP15K Cr OFFSET Cr OFFSET adjustment value

6 [HDTV]

1 HDTV ADJ Component Hi-Vision picture level adjustment

2 CONTRAST Contrast adjustment value

3 Cb GAIN Cb GAIN adjustment value

4 Cr GAIN Cr GAIN adjustment value

5 HDTV Y OFFSET Y OFFSET adjustment value

6 HDTV Cb OFFSET Cb OFFSET adjustment value

7 HDTV Cr OFFSET Cr OFFSET adjustment value

7 [COMP67K]

1 COMP67K ADJ (33K)

2 COMP67K ADJ (67K)

3 COMP67K CONTRAST

4 COMP67K Cb GAIN

5 COMP67K Cr GAIN

6 COMP67K Y OFFSET

7 COMP67K Cb OFFSET

8 COMP67K Cr OFFSET

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

8 [FR DDRTEST]

1 DDRA TEST1

2 DDRA TEST2

3 DDRB TEST1

4 DDRB TEST2

5 DDRB TEST3

9 [M GAMMA IN]

1 MONITOR GAMMA IN 1 Standard value 1(WBI10184) Adjustment gradation setting.

2 MONITOR GAMMA IN 2 Standard value 2(WBI20352)

3 MONITOR GAMMA IN 3 Standard value 3(WBI30528)

4 MONITOR GAMMA IN 4 Standard value 4(WBI40656)

5 MONITOR GAMMA IN 5 Standard value 5(WBI50800)

6 MONITOR GAMMA IN 6 Standard value 6(WBI60928)

7 GAMMA WRITE WB adjustment data writing

8 GAMMA RESET WB adjustment data reading

10 [M GAMMA R1]

1 MONITOR GAMMA R 1 WB adjustment Point 1, R adjustment value Parameter for six-point adjustment

2 MONITOR GAMMA G 1 WB adjustment Point 1, G adjustment value

3 MONITOR GAMMA B 1 WB adjustment Point 1, B adjustment value

4 MONITOR GAMMA R 2 WB adjustment Point 2, R adjustment value

5 MONITOR GAMMA G 2 WB adjustment Point 2, G adjustment value

6 MONITOR GAMMA B 2 WB adjustment Point 2, B adjustment value

7 MONITOR GAMMA R 3 WB adjustment Point 3, R adjustment value

8 MONITOR GAMMA G 3 WB adjustment Point 3, G adjustment value

9 MONITOR GAMMA B 3 WB adjustment Point 3, B adjustment value 10 GAMMA WRITE WB adjustment data writing 11 GAMMA RESET WB adjustment data reading

11 [M GAMMA R4]

1 MONITOR GAMMA R 4 WB adjustment Point 4, R adjustment value Parameter for six-point adjustment

2 MONITOR GAMMA G 4 WB adjustment Point 4, G adjustment value

3 MONITOR GAMMA B 4 WB adjustment Point 4, B adjustment value

4 MONITOR GAMMA R 5 WB adjustment Point 5, R adjustment value

5 MONITOR GAMMA G 5 WB adjustment Point 5, G adjustment value

6 MONITOR GAMMA B 5 WB adjustment Point 5, B adjustment value

7 MONITOR GAMMA R 6 WB adjustment Point 6, R adjustment value

8 MONITOR GAMMA G 6 WB adjustment Point 6, G adjustment value

9 MONITOR GAMMA B 6 WB adjustment Point 6, B adjustment value 10 GAMMA WRITE WB adjustment data writing 11 GAMMA RESET WB adjustment data reading

12 [SOUND 1]

1 AUDIO SWITCH

2 FORCED FLAT MODE

3 AIN1_ADC_VOLUME

4 AIN2_ADC_VOLUME

5 AIN3_ADC_VOLUME

6 AIN4_ADC_VOLUME

7 AIN5_ADC_VOLUME

8 AIN6_ADC_VOLUME

13 [SOUND 2]

1 INPUT_MIXER_GAIN_SP

2 INPUT_MIXER_GAIN_HP

3 INPUT_MIXER_GAIN_EXT

4 INPUT_MIXER_GAIN_EXT_HP

5 OUTPUT_MIXER_GAIN

6SUB_VOLUME_FLAT

7 SUB_VOLUME_EQ

8 SUB_VOLUME_AUDYSSEY

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

14 [SOUND 3]

1 PEQ1_F0

2 PEQ1_Q

3 PEQ1_GAIN

4 PEQ2_F0

5 PEQ2_Q

6 PEQ2_GAIN

7 PEQ3_F0

8 PEQ3_Q

9 PEQ3_GAIN 10 PEQ4_F0 11 PEQ4_Q 12 PEQ4_GAIN

15 [SOUND 4]

1 PEQ5_F0

2 PEQ5_Q

3 PEQ5_GAIN

4 VIRTUALIZER_LEVEL

5 BASS_BOOST_LEVEL

6 SLICER_LEVEL

7HPF_SW

8 HPF_LR

9LPF_SW 10 SW_MIXING_LEVEL

16 [M OPC1]

1 BRIGHTNESS DA0

2 BRIGHTNESS DA1

3 BRIGHTNESS DA2

4 BRIGHTNESS DA3

5 BRIGHTNESS DA4

6 BRIGHTNESS DA5

7 BRIGHTNESS DA6

8 BRIGHTNESS DA7

9 BRIGHTNESS DA8 10 BRIGHTNESS DA9 11 BRIGHTNESS DA10 12 BRIGHTNESS DA11

17 [M OPC2]

1 BRIGHTNESS DA12

2 BRIGHTNESS DA13

3 BRIGHTNESS DA14

4 BRIGHTNESS DA15

5 BRIGHTNESS DA16

6 BRIGHTNESS DA17

7 BRIGHTNESS DA18

8 BRIGHTNESS DA19

9 BRIGHTNESS DA20 10 BRIGHTNESS DA21 11 BRIGHTNESS DA22

18 [M OPC3]

1 BRIGHTNESS DA23

2 BRIGHTNESS DA24

3 BRIGHTNESS DA25

4 BRIGHTNESS DA26

5 BRIGHTNESS DA27

6 BRIGHTNESS DA28

7 BRIGHTNESS DA29

8 BRIGHTNESS DA30

9 BRIGHTNESS DA31 10 BRIGHTNESS DA32

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

19 [M ADL1]

1 OPC33 ADLEVEL 0

2 OPC33 ADLEVEL 1

3 OPC33 ADLEVEL 2

4 OPC33 ADLEVEL 3

5 OPC33 ADLEVEL 4

6 OPC33 ADLEVEL 5

7 OPC33 ADLEVEL 6

8 OPC33 ADLEVEL 7

9 OPC33 ADLEVEL 8 10 OPC33 ADLEVEL 9 11 OPC33 ADLEVEL 10 12 OPC33 ADLEVEL 11

20 [M ADL2]

1 OPC33 ADLEVEL 12

2 OPC33 ADLEVEL 13

3 OPC33 ADLEVEL 14

4 OPC33 ADLEVEL 15

5 OPC33 ADLEVEL 16

6 OPC33 ADLEVEL 17

7 OPC33 ADLEVEL 18

8 OPC33 ADLEVEL 19

9 OPC33 ADLEVEL 20 10 OPC33 ADLEVEL 21 11 OPC33 ADLEVEL 22

21 [M ADL3]

1 OPC33 ADLEVEL 23

2 OPC33 ADLEVEL 24

3 OPC33 ADLEVEL 25

4 OPC33 ADLEVEL 26

5 OPC33 ADLEVEL 27

6 OPC33 ADLEVEL 28

7 OPC33 ADLEVEL 29

8 OPC33 ADLEVEL 30

9 OPC33 ADLEVEL 31

22 [M V6THE]

1V6 OS THERMO 1

2V6 OS THERMO 2

3V6 OS THERMO 3

4V6 OS THERMO 4

5V6 OS THERMO 5

6V6 OS THERMO 6

7V6 OS THERMO 7

23 [M V5THE]

1V5 OS THERMO 1

2V5 OS THERMO 2

3V5 OS THERMO 3

4V5 OS THERMO 4

5V5 OS THERMO 5

6V5 OS THERMO 6

7V5 OS THERMO 7

24 [M EEP SET]

1 MONITOR TIME OUT

2 MONITOR MAX TEMP

3 MONITOR STANDBY CAUSE

25 [M TESTPTRN]

1 LCD TEST PATTERN

26 [FR REGI]

1 READ/WRITE

2 SLAVE ADDRESS

3 REGISTOR ADDRESS

4WRITE DATA

5 READ DATA

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

27 [MEMORY CLR]

1 KEY LOCK(1217)

2 KOUTEI AREA ALL CLEAR

3 A MODE AREA CLEAR

4 BACKUP AREA CLEAR

5 B MODE AREA CLEAR

6EXECUTION

28 [ETC]

1 EEP SAVE Writing setting values to EEPROM.

2 EEP RECOVER Reading setting values from EEPROM.

3 STANDBY CAUSE RESET Reset stand by cause.

*1 Details of P1.7(NORMAL STANDBY CAUSE)

6 No operation off in the cause of “no operation off” 7 No signal off in the cause of “no signal off” 8 PC power management mode 1 in the cause of “Standby mode MODE1” 9 PC power management mode 2 in the cause of “Standby mode MODE2” A Off timer in the cause of “SLEEP timer” C Command from RS232C in the cause of command by RS-232C

*2 Details of P1.8(ERROR STANDBY CAUSE)

5 Prolonged unspecified-signal input in PC mode in the cause of continuous “out of range”, PC input mode 13 Temperature error in the cause of abnormal temperature 16 Monitor trouble detected in the cause of abnormal monitor mode 17 Fan lock in the cause of fan lock

6. Special features

* STANDBY CAUSE (Page 1/28)

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.

* EEP SAVE (Page 28/28)

Storage of EEP adjustment value

* EEP RECOVER (Page 28/28)

Retrieval of EEP adjustment value from storage area

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7. Video signal adjustment procedure

7.1. Signal adjustment

1. Checking the Device

Before starting the adjustment, make sure the adjustment tool and signal generator are set for Sharp LCD US.

Checking the signal generator level adjustment (Set to the standard level.)

• Composite signal : 0.714 Vp-p ± 0.02 Vp-p (from pedestal to white)

• 15K component signal : Y level : 0.714 Vp-p ± 0.02 Vp-p (from pedestal to white) PB, PR level : 0.7 Vp-p ± 0.02 Vp-p

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

• 1080P component signal : Y level : 0.7 Vp-p ± 0.02 Vp-p (from pedestal to white)

PB, PR level : 0.7 Vp-p ± 0.02 Vp-p

2. Process mode

Adjustment item Adjustment conditions Adjustment procedure

1 Process mode Enter the process adjustment mode using the process adjustment remote controller.

3. Composite N358 signal/tuner adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting N358 signal

US-10ch

Feed the N358 color bar signal (75% color saturation) to VIDEO 1 input. Feed the RF signal (by use of US-10ch) to TUNER.

[Video input signal] [US-10ch]

75% Color saturation

100% white 0% black 100% white

2 Automatic adjust-

ment execution

4. Component 15K signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting 480i signal Feed the 100% color bar signal to VIDEO 1 COMPONENT input.

Move the cursor to [ N358 ALL ADJ] and press the [ENTER] key. When [ N358 ALL ADJ FINISH] appears, the adjustment is complete.

2 Automatic adjust-

ment execution

100% Color saturation

100% white

Move the cursor to [ COMP 15K ALL ADJ] and press the [ENTER] key. When [ COMP 15K ALL ADJ FINISH] appears, the adjustment is complete.

480i 100% color bar

0% black

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5. Component 33K signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting 1080i signal Feed the 100% color bar signal to VIDEO 1 COMPONENT input.

100% Color saturation

100% white

2 Automatic adjust-

ment execution

6. Component 1080P signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting 1080p signal Feed the 100% color bar signal to VIDEO 1 COMPONENT input.

Move the cursor to [ HDTV ADJ] and press the [ENTER] key. When [ HDTV ADJ FINISH] appears, the adjustment is complete.

100% Color saturation

100% white

1080i 100% color bar

0% black

1080p 100% color bar

0% black

2 Automatic adjust-

ment execution

Move the cursor to [ COMP67K ADJ] and press the [ENTER] key. When [ COMP67K ADJ FINISH] appears, the adjustment is complete.

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7.2. White balance adjustment

1. White balance adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting For detailed adjustment procedure, refer to “Kameyama Model Integral Monitor WB

Adjustment Specifications V1.6”.

1) Make the following settings for the set. AV MODE: [DYNAMIC] Backlight: +16 Active Backlight: OFF Aging time: Min. 60 minutes

2) Connect the white balance adjustment tool to the set.

2 Automatic adjust-

ment execution

[Command] Process mode KRSW0001 KKT10037

Setting KYOF0000 OSDS0001 SBSL0016

Multi-point adjustment mode MSET0001

Adjustment value initialization MSET0004

Point 6 WBI60928 MG6G**** MG6B**** MG6R****

Point 5 WBI50800 MG5G**** MG5B**** MG5R****

[Adjustment procedure]

1) Using the remote controller, transmit the “monitor adjustment process” code.

2) Set the 6th point to the specified gradation level. With the strongest color being fixed, turn down the R, G and B settings to their reference levels.

3) Set the 5th point to the specified gradation level. Correct the G setting (800 x 6thpoint G setting / 928) (rounded off), and make the R and B settings to their reference levels.

4) Set the 4th point to the specified gradation level. Correct the G setting (656 x 6thpoint G setting / 928) (rounded off), and make the R and B settings to their reference levels.

5) Set the 3rd point to the specified gradation level. Correct the G setting (528 x 6thpoint G setting / 928) (rounded off), and make the R and B settings to their reference levels.

6) Set the 2nd point to the specified gradation level. Correct the G setting (352 x 6thpoint G setting / 928) (rounded off), and make the R and B settings to their reference levels.

7) Set the 1st point to the specified gradation level. Correct the G setting (184 x 6thpoint G setting / 928) (rounded off), and make the R and B settings to their reference levels.

8) With the MSET0003 command, write the adjustment values and turn off the AC power.

* Initial R, G and B settings at point 6: Gradation level set at 928 * Initial R, G and B settings at points 1 thru 5: Corrected G setting at each point (This is because the adjustment is made to achieve the same remainder of RGB setting / 4 at each point.) [Adjustment value]

•As per the “standard set” submitted by Engineering Department

“LC-32D62U/LC-37D62U” Teaching set [Adjustment reference] Instrument: Minolta CA-210 Engineering instrument

Point 4 Level Reference Adj. spec Ins. spec WBI40656 Point 6 928 X=0.272 ±0.0025 ±0.003 MG4G**** y=0.277 MG4B**** Point 5 800 X=0.272 ±0.0025 ±0.003 MG4R**** y=0.277

Point 4 656 X=0.272 ±0.0025 ±0.003 Point 3 y=0.277 WBI30528 Point 3 528 X=0.272 ±0.0035 ±0.005 MG3G**** y=0.277 MG3B**** Point 2 352 X=0.272 ±0.0060 ±0.010 MG3R**** y=0.277

Point 1 192 X=0.272 ±0.0100 ±0.015

y=0.277 Point 2 WBI20352 MG2G**** MG2B**** MG2R****

Point 1 WBI10192 MG1G**** MG1B**** MG1R****

Writing MSET0003

Note Set conditions for inspection

AV MODE: [DYNAMIC] (Reset)

Monochro: ON

Active Backlight: OFF

Aging Time: Min. 60 minutes

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7.3. Adjusting procedure by use of [RS-232C]

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 unit with the RS-232C cable connected.

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

4. Make the following settings.

Baud rate 9,600 bps Data LENGTH 8 bit Parity bit None Stop bit 1 bit Flow control None

5. If the settings are correct, the terminal software indicates “ERR” against pressing of the “ENTER” key.

6. After the settings are done correctly, it is possible to make an adjustment by typing in the command shown in the table below and pressing the “ENTER” key on the keyboard.

7. Command entry is successful if the terminal software indicates “OK” when the “ENTER” is pressed. If “ERR” is shown, retry to enter the command.

8. Send the process mode switching command to switch from the RS232C operation mode to the process mode.

KRSW0001: “ERR” is returned.

KKT10037: When “OK” is returned, the process mode becomes active. When “ERR”, start over from KRSW0001.

9. Send each adjustment command.

7.4. Key writing

1. EDID writing (Main PWB: QPWBXE028WJZZ)

Adjustment item Adjustment conditions Adjustment procedure

1 HDMI EDID writing Inspection mode

File version checking

1) Using the checker, write the analog HDMI EDID data to IC801/IC1501/IC1502 that are mounted on the main PWB. TL833/1508/1510: I2C clock, TL834/1509/1511: I2C data TL831/1512/1513: 5V, TL835/1519/1518: GND TL832/1534/1535: write protection (H: WP, Low: write enable)

2) Write the data before the HDMI inspection with the checker. (If the EDID has not been written, the HDMI does not function normally.)

7.5. Factory settings

After making the factory settings, pull off the AC cord.

NOTE: Do not turn on the power once the factory settings have been made. Otherwise the factory settings must be made again.

Adjustment item Adjustment conditions Adjustment procedure

1 Factory settings Finally pull off the AC cord. • Move the cursor to the [INDUSTRY INIT (+Cause)] line. Using the [VOL+/–] keys,

set this item ON and press the [ENT] key. The version confirm window appears on the green screen. When [SUCCESS] appears at the top, the factory settings are complete. (If an error occurs. [ERROR] appears on the red screen.)

• Finally turn off the AC power. The following settings are returned to the factory ones.

1) User settings

2) Channel data (broadcast frequencies, etc.)

3) Password setting

4) Operation time

5) Standby Cause

6) EZ SETUP flag

7) V-CHIP block setting

7.6. Software version

Change of software version is notified at a technical report.

* Main microprocessor

* Monitor microprocessor

* EDID data (HDMI)

5 – 14

Page 33

LC-32D62U/LC-37D62U 1st

CHAPTER 6. TROUBLE SHOOTING TABLE

Service Manual

[1] TROUBLE SHOOTING TABLE

No video (1)

LC-32D62U/LC-37D62U 1st

COMPOSITE: No external input video

[INPUT-1]

Is INPUT-1 selected on the input select menu screen? Is the INPUT-SELECT for the input signal?

YES YES

Is there the COMPOSITE video signal input at pin (71) of IC501 (AV_SWITCH)?

YES YES

Is there the COMPOSITE video signal output at pin (60) of IC501? NO Check IC501 and its periph-

Is there the COMPOSITE video signal output at pin (2) of connector (SC501) on the TERMINAL unit? NO Check the line between

NO Select INPUT-1 on the input

select menu screen for the right input signal.

Does the INPUT-1 V2.PLUG detection function? Check the line between pin (6) of input terminal (J508) and pin (76) of IC501 (AV_SWITCH).

NO Check the line between pin

(7) of J508 and pin (71) of IC501.

YES

Is INPUT-2 selected on the input select menu screen?

Is there the COMPOSITE video signal input at pin (3) of IC501 (AV_SWITCH)?

COMPOSITE: No external input video

[INPUT-2]

NO Select INPUT-2 on the input

select menu screen.

Does the INPUT-2 V3.PLUG detection function? Check the line between pin (6) of input terminal (J509) and pin (2) of IC501 (AV_SWITCH).

NO Check the line between pin

(7) of J509 and pin (3) of IC501.

eral circuits.

IC501 and SC501 (Q501 thru Q504, etc.).

YES

Is there the COMPOSITE video signal input at pin (2) of connector (SC1101) on the MAIN unit? NO Check the SC501 and

YES

Is there the COMPOSITE video signal input at pins (M4, N4) of IC3301 (VPC)? NO Check the line between

YES Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301? TA2_P/M (AJ30/AK30), TB2_P/M (AJ29/AK29), TC2_P/M (AJ28/AK28), TD2_P/M (AJ26/AK26), TE2_P/

M (AJ25/AK25), TCLK2_P/M (AJ27/AK27), TA1_P/M (AB29/AB30), TB1_P/M (AC29/AC30), TC1_P/M (AD29/AD30), TD1_P/M (AF29/AF30), TE1_P/M (AG29/AG30), TCLK1_P/M (AE29/AE30)

YES Check the panel module.

SC1101 connectors.

SC1101 and IC3301 (Q2201 thru Q2203, Q2205, Q2207, Q2209, etc.).

NO Check IC3301 and its

peripheral control circuits (IC3501, IC3502, IC8101, etc.).

6 – 1

Page 34

LC-32D62U/LC-37D62U 1st

No video (2)

COMPONENT: No external input video

[INPUT-1]

Is INPUT-1 selected on the input select menu screen? Is the INPUT-SELECT for the input signal?

NO Select INPUT-1 on the input select menu screen for the right input signal.

Does the INPUT-1 C2.PLUG detection function?

Check the line between pin (6) of input terminal (J502) and pin (40) of IC501 (AV_SWITCH).

YES

Is there the COMPONENT video signal input at pins (27) (Y) / (29) (PB) and (31) (PR) of IC501 (AV_SWITCH)?

NO Check the line between the input terminals of J502 and

IC501.

YES

Is there the COMPONENT video signal output at pins (60) (Y) / (59) (PB) and (58) (PR) of IC501?

COMPONENT: No external input video

[INPUT-3]

Is INPUT-3 selected on the input select menu screen? Is the INPUT-SELECT for the input signal?

NO Select INPUT-3 on the input select menu screen for the right input signal.

Does the INPUT-3 C1.PLUG detection function?

Check the line between pin (6) of input terminal (J507) and pin (38) of IC501 (AV_SWITCH).

YES

Is there the COMPONENT video signal input at pins (21) (Y) / (23) (PB) and (25) (PR) of IC501 (AV_SWITCH)?

Check the line between the input terminals of J507 and IC501.

YES

S-VIDEO: No external input video

[INPUT-2]

Is INPUT-2 selected on the input select menu screen?

Does the INPUT-2 S3.PLUG detection function?

Check the line between pin (6) of input terminal (J503) and pin (42) of IC501 (AV_SWITCH).

YES

Is there the S-VIDEO signal input at pins (5) (Y) and (7) (C) of IC501 (AV_SWITCH)?

Check the line between pins (3) (Y) / (4) (C) of J503 and pins (5) / (7) of IC501.

NO Check IC501 and its peripheral

YES

[COMPOSITE signal input] Is there the COMPONENT video signal output at pins (2), (4) and (6) of connector (SC501) on the TERMINAL unit? [S-VIDEO signal input] Is there the video signal output at pins (2) (Y) and (4) (C) of connector (SC501) on the TERMINAL unit?

YES

[COMPOSITE signal input] Is there the COMPONENT video signal input at pins (2), (4) and (6) of connector (SC1101) on the MAIN unit?

[S-VIDEO signal input] Is there the video signal input at pins (2) (Y) and (4) (C) of connector (SC1101) on the MAIN unit?

YES [COMPOSITE signal input] Is there the COMPONENT video signal input at pins (U3) (Y) / (AA1) (PB) and (W3) (PR) of IC3301 (VPC)?

[S-VIDEO signal input] Is there the video signal input at pins (M4, N4) (Y) and (T1) (C) of IC3301 (VPC)?

YES Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301?

TA2_P/M (AJ30/AK30), TB2_P/M (AJ29/AK29), TC2_P/M (AJ28/AK28), TD2_P/M (AJ26/AK26), TE2_P/M (AJ25/AK25), TCLK2_P/M (AJ27/AK27), TA1_P/M (AB29/AB30), TB1_P/M (AC29/ AC30), TC1_P/M (AD29/AD30), TD1_P/M (AF29/AF30), TE1_P/M (AG29/AG30), TCLK1_P/M (AE29/AE30)

circuits.

YES

Check the line between IC501 and SC501 (Q501 thru Q504, etc.).

NO Check the SC501 and SC1101

connectors.

NO Check the line between

SC1101, IC3301 and its periphery circuits.

NO Check the line between SC1101

and IC3301 (Q2201 thru Q2203, Q2205, Q2207. Q2209, etc.).

NO Check IC3301 and its periph-

eral control circuits (IC3501, IC3502, IC8101, etc.).

Check the panel module.

YES

6 – 2

Page 35

No video at UHF/VHF broadcast signal reception No video at digital broadcast signal reception

Is the specified TV signal selected on the input select menu screen?

LC-32D62U/LC-37D62U 1st

No video (3)

Is there the analog video signal output at the output pin (13) of tuner (TU1101)?

YES YES Is there the video signal output at pin (5) of IC1103

(LEVEL_ADJ)?

YES Is there the CVBS3 signal

input at pin (N3) of IC3301 (VPC)?

NO Check the tuner, IC8601

(DE-MODULATOR) and their peripheral circuits (TUN_SDA/SCL, Q8601).

NO Does the level adjustment

control signal come from pin (6) of IC1103 to pin (1) of IC1104?

NO Check IC1104 and its peripheral circuits. Replace as required.

NO Check the line between

IC1103 and IC3301 (Q2204, Q2208, etc.).

Is there the video signal output at the output pins (20) and (21) of tuner (TU1101)?

Are there the MPEG signal outputs (US_TS_PKTSYNC, US_TS_EN, US_TS_DATA and US_TS_CLK) from IC8601?

YES

Are there the MPEG signal inputs (US_TS_PKTSYNC, US_TS_EN, US_TS_DATA and US_TS_CLK) at IC8101 (CPU/DECODER)?

YES Are there the MVY [7:0], MVC [7:0] and MVCLKO/

MNSYNCO/MVSYNCO signal outputs from IC8101?

NO Check the tuner, IC8601

(DE-MODULATOR) and their peripheral circuits (TUN_SDA/SCL, Q8601).

NO Check IC8601 and its

peripheral control circuits.

NO Check the line between

IC8601 and IC8101.

NO Check IC8101 and its

peripheral circuits.

YES Are there the MVY [7:0], MVC [7:0] and MVCLKO/

MNSYNCO/MVSYNCO signal inputs at IC3301?

YES

Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301? TA2_P/M (AJ30/AK30), TB2_P/M (AJ29/AK29), TC2_P/M (AJ28/AK28), TD2_P/M (AJ26/AK26), TE2_P/M (AJ25/AK25), TCLK2_P/M (AJ27/ AK27), TA1_P/M (AB29/AB30), TB1_P/M (AC29/AC30), TC1_P/M (AD29/AD30), TD1_P/M (AF29/AF30), TE1_P/M (AG29/AG30), TCLK1_P/M (AE29/AE30)

YES NO

Check the panel module. Check IC3301 and its peripheral control circuits (IC3501, IC3502,

IC8101, etc.).

YES

NO Check the line between

IC8101 and IC3301.

6 – 3

Page 36

LC-32D62U/LC-37D62U 1st

Select INPUT-4 on the input select menu screen for the right input signal.

Does the HOT PLUG detection function? Does the HDMI_HPG3 signal come from pin (18) of connector (SC1501) to pin (66) of IC9101 (CPLD)?

Does the HDMI_PLG_ENB signal come from pin (81) of IC9101 to pin (33) of IC1510 (HDMI/HDCP/DVI COMPLIANT RECEIVER) and pin (40) of IC1507 (DVI/ HDMI SWITCH)?

Does the HDP3 signal come from pin (44) of IC1507 to pin (19) of SC1501?

[HDMI signal input] No video (4)

No external input video [INPUT-4]

Is INPUT-4 selected on the input select menu screen?

YES

NO Check the line between IC1507 and SC1501.

Check the line between SC1501 and IC9101 (CPLD) (Q1506, Q1508, etc.).

Check the line between IC9101 and IC1507/IC1510.

YES

Does the signal come from connector (SC1501) to the input pins (48 and

49) (CLK±), (51 and 52) (D0±), (54 and 55) (D1±), and (57 and 58) (D2±), all of IC1507?

YES

Does the signal come from pins (34 and 35) (CLK±), (31 and 32) (D0±), (28 and 29) (D1±), and (25 and 26) (D2±) of IC1507 to pins (58 and 59), (62 and 63), (66 and 67), and (70 and 71) of IC1510?

YES Are there the U3VINY [7:0], U3VINR [7:0], U3VINPBPR [7:0], U3VDIN, U3HDIN, U3DEIN and U3VINCLK signal outputs from IC1510?

YES Are there the U3VINY [7:0], U3VINR [7:0], U3VINPBPR [7:0], U3VDIN,

U3HDIN, U3DEIN and U3VINCLK signal inputs at IC3301 (VPC)?

YES Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301? TA2_P/M (AJ30/AK30), TB2_P/M (AJ29/AK29), TC2_P/M (AJ28/AK28),

TD2_P/M (AJ26/AK26), TE2_P/M (AJ25/AK25), TCLK2_P/M (AJ27/ AK27), TA1_P/M (AB29/AB30), TB1_P/M (AC29/AC30), TC1_P/M (AD29/AD30), TD1_P/M (AF29/AF30), TE1_P/M (AG29/AG30), TCLK1_P/M (AE29/AE30)

NO Check IC1510 and its peripheral circuits.

NO Check the line between IC1510 and IC3301.

Is IC1501 (EEPROM) accessed by I2C, with HDMI connected, to read the DDC_I2C CLOCK/DATA data?

NO Check the DDC line and its peripheral circuits (IC1501 (EEPROM) and its peripherals).

Check IC1507, IC1510 and their peripheral circuits.

Check IC3301 and its peripheral control circuits (IC3501, IC3502, IC8101, etc.).

Check the panel module.

YES

6 – 4

Page 37

[HDMI signal input] No video (4)

No external input video [INPUT-5]

Is INPUT-5 selected on the input select menu screen?

NO Select INPUT-5 on the input select menu screen for the right input signal.

NO Does the HOT PLUG detection function? Does the HDMI_HPG2 signal come from pin (18) of con-

nector (SC1502) to pin (61) of IC9101 (CPLD)?

YES Does the HDMI_PLG_ENB signal come from pin (81) of IC9101 to pin (33) of IC1510 (HDMI/HDCP/DVI COMPLIANT RECEIVER) and pin (40) of IC1507 (DVI/HDMI

SWITCH)?

YES Does the HDP2 signal come from pin (62) of IC1507 to pin (19) of SC1502?

LC-32D62U/LC-37D62U 1st

NO Check the line between IC1507 and SC1502.

Check the line between SC1502 and IC9101 (CPLD) (Q1505, Q1507, etc.).

Check the line between IC9101 and IC1507/IC1510.

YES Does the signal come from connector (SC1502) to the input pins (67 and 68) (CLK±), (70 and 71) (D0±), (73 and 74) (D1±), and (76 and 77) (D2±), all of IC1507?

YES

Does the signal come from pins (34 and 35) (CLK±), (31 and 32) (D0±), (28 and 29) (D1±), and (25 and 26) (D2±) of IC1507 to pins (57 and

58), (62 and 63), (66 and 67), and (70 and 71) of IC1510?

YES Are there the U3VINY [7:0], U3VINR [7:0], U3VINPBPR [7:0], U3VDIN, U3HDIN, U3DEIN and U3VINCLK signal outputs from IC1510?

YES Are there the U3VINY [7:0], U3VINR [7:0], U3VINPBPR [7:0], U3VDIN,

U3HDIN, U3DEIN and U3VINCLK signal inputs at IC3301 (VPC)?

YES Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301? TA2_P/M (AJ30/AK30), TB2_P/M (AJ29/AK29), TC2_P/M (AJ28/

AK28), TD2_P/M (AJ26/AK26), TE2_P/M (AJ25/AK25), TCLK2_P/M (AJ27/AK27), TA1_P/M (AB29/AB30), TB1_P/M (AC29/AC30), TC1_P/ M (AD29/AD30), TD1_P/M (AF29/AF30), TE1_P/M (AG29/AG30), TCLK1_P/M (AE29/AE30)

NO Check IC1510 and its peripheral circuits.

NO Check the line between IC1510 and IC3301.

Is IC1502 (EEPROM) accessed by I2C, with HDMI connected, to read the DDC_I2C CLOCK/DATA data?

NO Check the DDC line and its peripheral circuits (IC1502 (EEPROM) and its peripherals).

Check IC1507, IC1510 and their peripheral circuits.

Check IC3301 and its peripheral control circuits (IC3501, IC3502, IC8101, etc.).

Check the panel module.

YES

6 – 5

Page 38

LC-32D62U/LC-37D62U 1st

No audio (1)

[Audio signal] INPUT-1 No audio [Audio signal] INPUT-2 No audio [Audio signal] INPUT-3 No audio

[INPUT-1 input] Is INPUT-1 selected on the input select menu screen?

Is the audio output selected for “VARIABLE” on the menu screen?

YES YES YES

Set the audio output to “FIXED”. Set the audio output to “FIXED”. Set the audio output to

YES

[INPUT-1] Does the audio signal come from pins (4) (L) and (2) (R) of input terminal (J508) to pins (8) (L) and (6) (R) of connector (SC502) on the TERMINAL unit?

Check the audio signal from J508 to SC502, and their peripheral circuits.

YES

[INPUT-1] Is there the audio signal input at pins (8) (L) and (6) (R) of connector (SC1102) on the MAIN unit?

[INPUT-2 input] Is INPUT-2 selected on the input select menu screen?

Is the audio output selected for “VARIABLE” on the menu screen?

YES

[INPUT-2] Does the audio signal come from pins (4) (L) and (2) (R) of input terminal (J509) to pins (12) (L) and (10) (R) of connector (SC502) on the TERMINAL unit?

Check the audio signal from J509 to SC502, and their peripheral circuits.

YES

[INPUT-2] Is there the audio signal input at pins (12) (L) and (10) (R) of connector (SC1102) on the MAIN unit?

[INPUT-3 input] Is INPUT-3 selected on the input select menu screen?

Is the audio output selected for “VARIABLE” on the menu screen?

YES

“FIXED”.

[INPUT-3] Does the audio signal come from pins (4) (L) and (2) (R) of input terminal (J505) to pins (4) (L) and (2) (R) of connector (SC502) on the TERMINAL unit?

Check the audio signal from J505 to SC502, and their peripheral circuits.

YES

[INPUT-3] Is there the audio signal input at pins (4) (L) and (2) (R) of connector (SC1102) on the MAIN unit?

NO Check the SC502 and SC1102 connectors.

YES [INPUT-1] Does the audio signal come from pins (8) and (6) of SC1102 to pins (59) (L) and (60) (R) of IC1404 (CODEC)?

NO Check the line between SC1102 and IC1404 and their peripheral circuits.

YES

Is there the audio signal output at pins (38) (L) and (39) (R) of IC1404?

Is there the audio signal output at pins (11) (L) and (14) (R) of connector (SC1301) on the MAIN unit? NO Check the line between

Is there the audio signal input at pins (11) (L) and (14) (R) of connector (P2704) on the TERMINAL unit?

[INPUT-2] Does the audio signal come from pins (12) (L) and (10) (R) of SC1102 to pins (53) (L) and (54) (R) of IC1404 (CODEC)?

YES

Check the SC502 and SC1102 connectors.

YES

Check the line between SC1102 and IC1404 and their peripheral circuits.

YES

NO Check the SC502 and SC1102 connectors.

YES [INPUT-3] Does the audio signal come from pins (4) (L) and (2) (R) of SC1102 to pins (61) (L) and (62) (R) of IC1404 (CODEC)?

NO Check the line between SC1102 and IC1404 and their peripheral circuits.

YES

NO Check IC1404 and its peripheral circuits.

IC1404 and SC1301.

NO Check the SC1301 and

P2704 connectors.

6 – 6

Page 39

LC-32D62U/LC-37D62U 1st

YES

Is there the audio signal input at pins (5) (L) and (3) (R) of IC2701 (STEREO_AMP)? NO Check the line between

YES

Is the audio output from IC2701 as specified? NO Check IC2701 and its periph-

YES

Check the connector (P2703), speakers and their peripheral circuits.

P2704 and IC2701, and their peripheral circuits (AMP_MUTE line).

eral circuits.

6 – 7

Page 40

LC-32D62U/LC-37D62U 1st

[Audio signal] INPUT-5 No audio (HDMI analog input)

No Audio (1)

[HDMI analog input] Is INPUT-5 selected on the input select menu screen?

YES [HDMI analog input] Does the audio signal come

from pins (4) (L) and (2) (R) of input terminal (J1501) to pins (57) (L) and (58) (R) of IC1404?

YES Is there the audio signal output at pins (38) (L) and (39) (R) of IC1404? NO Check IC1404 and its

Is there the audio signal output at pins (11) (L) and (14) (R) of connector (SC1301) on the MAIN unit? NO Check the line between

Is there the audio signal input at pins (11) (L) and (14) (R) of connector (P2704) on the TERMINAL unit? NO Check the IC1301and

NO Is the audio output selected

for “VARIABLE” on the menu screen?

YES

Set the audio output to “FIXED”

NO [HDMI analog input]

Check the line between J1501 and IC1404, and their peripheral circuits.

YES

peripheral circuits.

IC1404 and SC1301.

P2704 connectors.

YES

Is there the audio signal input at pins (5) (L) and (3) (R) of IC2701 (STEREO_AMP)? NO Check the line between

P2704 and IC2701, and their peripheral circuits (AMP_MUTE line).

YES

Is the audio output from IC2701 as specified? NO Check IC2701 and its

peripheral circuits.

YES

Check the connector (P2703), speakers and their peripheral circuits.

6 – 8

Page 41

[with HDMI connected] No audio (2) No audio in all modes (3)

[Audio signal] INPUT-4 No audio (HDMI connected) [Audio signal] INPUT-5 No audio (HDMI connected)

LC-32D62U/LC-37D62U 1st

[INPUT-4 input] Is INPUT-4 selected on the input select menu screen? [INPUT-5 input] Is INPUT-5 selected on the input select menu screen?

YES [INPUT-4] If no video appears, refer to “No external input video (HDMI) [INPUT-4]”. [INPUT-5] If no video appears, refer to “No external input video (HDMI)

[INPUT-5]”.

YES Is the SII9011 (pin (77) of IC1510) _MUTE line as specified?

YES Does the HDMI_SPDIF signal come

from pin (78) of IC1510 to pin (2) of IC1404 (CODEC)?

NO Is the audio output selected for

“VARIABLE” on the menu screen?

YES

Set the audio output to “FIXED”.

YES

NO Check Q1301, IC1303 and their

peripheral circuits.

NO Check the line between IC1510,

IC1404 and their peripheral circuits.

YES

Is there the audio signal output at pins (38) (L) and (39) (R) of IC1404? NO Check IC1404 and its periph-

YES

Is there the audio signal output at pins (11) (L) and (14) (R) of connector (SC1301) on the MAIN unit? NO Check the line between IC1404

YES Is there the audio signal input at pins (11) (L) and (14) (R) of connector (P2704) on the TERMINAL unit?

YES Is there the audio signal input at pins (5) (L) and (3) (R) of IC2701 (STEREO_AMP)? NO Check the line between P2704

YES Is there the audio output from IC2701 as specified? NO Check IC2701 and its periph-

YES Check the connector (P2703), speakers and their peripheral circuits.

eral circuits.

and SC1301.

NO Check the SC1301 and P2704

connectors.

and IC2701, and their peripheral circuits (AMP_MUTE line).

eral circuits.

6 – 9

Page 42

LC-32D62U/LC-37D62U 1st

No audio at digital broadcast signal reception No audio at UHF/VHF broadcast signal reception

No audio (4)

Move the sound volume key. Does the volume icon indicate the speakers?

NO NO

Are there the IF_OUT_N and IF_OUT_P signal outputs at pins (20) and (19) of tuner (TU1101)?

YES YES Are there the IF_OUT_N and IF_OUT_P signal inputs at pins (11) and (10) of

IC8601 (DEMODULATOR)?

YES YES Do the US_TS_CLK/DATA/ EN/PKTSYNC signals come

from pins (51, 59, 63 and

66) of IC8601 to pins (D11, A9, C10, B10) of IC8101 (CPU/DECODER)?

YES YES Is the communication between IC8101 and IC1404

(DAC) as specified? (DTV_I2SMCLK/DTV_I2S SCLK/DTV_I2SLRCLK)?

YES Set the audio output to

“FIXED”.

NO Check the tuner (TU1101)

and its peripheral circuits. Replace as required.

NO Check the line between

tuner (TU1101) and IC8601, and their peripheral circuits (filter circuit, etc.).

NO Check the line between

IC8601 and IC8101, and their peripheral circuits.

NO Check the line between

IC8101 and IC1404, and their peripheral circuits.

Is the audio output selected for “VARIABLE” on the menu screen?

Is there the SIF signal output at pin (15) of tuner (TU1101)?

Is there the SIF signal input at pins (21) of IC1401 (SIF_DECODER)?

Are the audio signal outputs at pins (30) (L) and (29) (R) of IC1401?

Are the audio signal inputs at pins (51) (L) and (52) (R) of IC1404?

YES Set the audio output to

“FIXED”.

NO Check the tuner (TU1101)

and its peripheral circuits. Replace as required.

NO Check the line between

tuner (TU1101) and IC1401, and their peripheral circuits (Q1102, Q1103, etc.).

NO Check IC1401

(SIF_DECODER) and its peripheral circuits. Replace as required.

NO Check the line between

IC1401 and IC1404, and their peripheral circuits.

YES YES Are the audio signal outputs at pins (38) (L) and (39) (R) of IC1404? NO Check IC1404 and its

YES

Are the audio signal outputs at pins (11) (L) and (14) (R) of connector (SC1301) on the MAIN unit? NO Check the line between

YES

Are the audio signal inputs at pins (11) (L) and (14) (R) of connector (P2704) on the TERMINAL unit? NO Check the SC1301 and

YES

Are the audio signal inputs at pins (5) (L) and (3) (R) of IC2701 (STEREO_AMP)? NO Check the line between

YES

Is the audio output from IC2701 as specified? NO Check IC2701 and its

YES

Check the P2703 connector, speakers and their peripheral circuits.

peripheral circuits.

IC1404 and SC1301, and their peripheral circuits.

P2704 connectors.

P2704 and IC2701, and their peripheral circuits (AMP_MUTE line).

peripheral circuits.

6 – 10

Page 43

LC-32D62U/LC-37D62U 1st

No audio signal at DIGITAL AUDIO OUTPUT terminal (Analog sound heard)

No INPUT-4/5 (HDMI) audio No audio at digital broadcast signal reception

If no video appears, refer to “No external input video (HDMI) [INPUT-4/5]”.

Is the SII9011 (pin (77) of IC1510) _MUTE line as specified?

YES YES Does the HDMI_SPDIF signal come from pin (78) of

IC1510 to pin (2) of IC1404 (CODEC)?

NO Check Q1301, IC1303 and

their peripheral circuits.

NO Check the line between

IC1510 and IC1404 and their peripheral circuits.

Are there the IF_OUT_N and IF_OUT_P signal outputs at pins (20) and (19) of tuner (TU1101)?

YES Are there the IF_OUT_N and IF_OUT_P signal inputs at pins (11) and (10) of

IC8601 (DEMODULATOR)?

Do the US_TS_CLK/DATA/ EN/PKTSYNC signals come from pins (51, 59, 63 and

66) of IC8601 to pins (D11, A9, C10, B10) of IC8101 (CPU/DECODER), respectively?

YES Is the DTV_SPDIF signal

output at pin (R33) of IC8101?

YES Is the DTV_SPDIF signal

input at pin (5) of IC1404?

NO Check the tuner (TU1101)

and its peripheral circuits. Replace as required.

NO Check the line between

tuner (TU1101) and IC8601, and their peripheral circuits (filter circuit, etc.).

NO Check the line between

IC8601 and IC8101, and their peripheral circuits.

NO Check IC8101 and its

peripheral circuits.

NO Check the line between

IC8101 and IC1404, and their peripheral circuits.

YES

Is there the SPDIF signal output at pin (23) of IC1404 (CODEC)? NO Check IC1404 and its

YES

Is there the SPDIF signal input at pin (2) of IC1305 (SPDIF_BUFF)? NO Check the line between

YES

Is there the MUTE signal input at pin (1) of IC1305? NO Check the MUTE_A_ALL

YES

Is there the SPDIF signal input at pin (1) of DIGITAL AUDIO OUTPUT terminal (D1313)?

NO Check D1313 and its peripheral circuits. Replace as required. No optical output under the following conditions as per HDMI requirements.

* Audio contents protected * Audio frequency beyond 48 KHz * Audio bit length beyond 16 bits

YES

peripheral circuits.

IC1404 and IC1305 and their peripheral circuits.

and ACDET_MUTE signals.

6 – 11

Page 44

LC-32D62U/LC-37D62U 1st

No monitor audio

Is the audio output from the monitor set at “VARIABLE” or “FIXED” on the menu screen?

YES

Are the audio signal outputs at pins (40) (L) and (41) (R) of IC1404?

YES Are the audio signal inputs at pins (3) (L) and (5) (R) of IC1408 (BUFF_AMP)?

YES Are the audio signal outputs at pins (1) (L) and (7) (R) of IC1408?

YES Are the audio signal outputs at pins (16) (L) and (14) (R) of

connector (SC1102) on the MAIN unit?

YES Are the audio signal inputs at pins (16) (L) and (14) (R) of

connector (SC502) on the TERMINAL unit?

NO Check the bus line (SCL0_5/SDA0_5) and IC1404. Replace

as required.

NO Check IC1404 and its peripheral circuits. Replace as

required.

NO Check the line between IC1404 and IC1408, and their

peripheral circuits.

NO Check IC1408 and its peripheral circuits. Replace as

required.

NO Check the line between IC1408 and SC1102, and their

peripheral circuits.

NO Check the SC1102 and SC502 connectors.

YES Check the signal up to the monitor audio output terminal (J501).

NO Check the MUTE.R line (Q507 thru Q509, etc.).

6 – 12

Page 45

LED flashing timing chart for error notification.

250ms 1sec

1) Power LED (The power LED (Green) which lights during TV reception flashes.)

Error type Power green LED operation (1 cycle) Pins are microprocessor (IC2002) pins.

Lamp failure Flashes once: Fast

Power failure Flashes twice

Communication failure with main CPU Flashes 3 times

Vsync Trident failure Flashes 4 times

H: On

L: Off

H: On

L: Off

H: On

L: Off

H: On

L: Off

LC-32D62U/LC-37D62U 1st

ERR_PNL (pin 43): L failure. Confirmed after 10 consecutive matches at 500 ms intervals (detected only when the backlight is on). Note that after five match counts, the lamp cannot be activated except in the monitoring process. (For the first time, only the inverter is reset, and error OFF is not activated). Accumulated “LAMP ERROR” counts are cleared to 0 when the corresponding setting in the page 1 of process A is made or when the power is turned on with [CH_DOWN] and [VOL_UP] on the unit down or after continuous illumination for 3 minutes.

Refer to “Power failure details”.

Refer to “Communication failure details”. Communication line failure or main CPU communication failure. → Check debug statements for the main CPU. Communication line with main CPU: TXD (pin 28), RXD (pin

29)

VSYNC (pin 46) failure (uninput). Trident_IC operation failure. Detected during operation (interruption).

Monitor temperature failure Flashes 5 times

Program data broken Flashes 8 times

2) Power failure details (Power LED flashes twice and OPC LED flashes)

Error type Notification LED operation (1 cycle) Pins are microprocessor pins unless otherwise specified.

PS_ON DET_10V failure Flashes once

D_POW DET_D3V3 failure Flashes twice

D_POW DET_6V failure Flashes 3 times

H: On

L: Off

H: On

L: Off

H: On

L: Off

H: On

L: Off

H: On

L: Off

If the panel temperature is 60°C or more for 15 seconds or more in a row, CAUTION appears on the OSD “TEMPERATURE” of AVC (flashes in red in the lower right screen). If the panel temperature is 60°C or more for 25 seconds or more in a row, error standby is activated. [Method of evasion] MONITOR MAX TEMP on page 23 of process A: Temperature protection threshold is changed small.

Internal Flash ROM data is not correct.

[Restore] Write Monitor Micon software.

DET_10V (pin 57). UR10V or A9V is not applied. If error is detected during operation, error standby is activated by polling.

DET_D3V3 (pin 59) failure (L). D3.3V is not applied. If error is detected during operation, error standby is activated by polling.

DET_6V (pin 56) failure (L). D5V or A5V is not applied. If error is detected during operation, error standby is activated by polling.

6 – 13

Page 46

LC-32D62U/LC-37D62U 1st

Error type Notification LED operation (1 cycle) Pins are microprocessor pins unless otherwise specified.

PANEL_POW PNL_5V failure Flashes 5 times

H: On

L: Off

DET_PNL_5V (pin 58) failure (L). Panel power is not applied. If error is detected during operation, error standby is activated by polling.

Main failure Flashes 7 times

3) Communication failure details (Power LED flashes 3 times and OPC LED flashes)

Error type Notification LED operation (1 cycle)

Initial communication reception failure Flashes once

Time-out setting reception failure Start-up confirmation reception failure Flashes twice

Regular communication failure Flashes 3 times

H: On

L: Off

H: On

L: Off

H: On

L: Off

H: On

L: Off

Main microprocessor detection error (FAN error, 1bit AMP error, etc.) The details are displayed in “ERROR STANDBY CAUSE” on page 1 of process A for the main microprocessor.

Initial communication from the main CPU is not received. (After cancelling the reset, request for the monitor model No. is not received.) → Communication line failure or main CPU start-up failure.

Time-out setting and start-up mode change cannot be received from the main CPU. (Start-up communication until time-out setting and start-up mode change is not received.) → Main CPU start-up failure or monitor microprocessor’s reception failure. Regular communication that is performed at 1 second intervals in the normal operation is interrupted. → Main CPU operation failure or monitor microprocessor’s reception failure.

Basically, communication logs are analyzed by a bus

monitor or debug print logs are analyzed.

6 – 14

Page 47

LC-32D62U/LC-37D62U 1st

CHAPTER 7. MAJOR IC INFORMATIONS

Service Manual

[1] MAJOR IC INFORMATIONS

1. IC501 (MM3151XQ)

This I2C bus-controlled video switch is designed to switch between tow-system color difference (component) signal, one-system S video signal and three-system composite signal.

The analog video signal from the INPUT-1 or INPUT-2 and INPUT-3 input terminal is fed into this IC for selection. The video output signal from this IC flows through a low-pass filter into the video signal processing circuit IC3301 (IXB723WJ).

2. IC2701 (TPA3100D)

The Class-D type digital audio power amplifier TPA3100D gives maximum continuous output of 15 W/ch.

3. IC1401 (VHiAN5832SA-1Y)

The AN5832SA is an I2C bus-controlled, US-standard analog TV sound multiplexing demodulator IC. It has the following functions built in: SIF demodulation, STEREO demodulation, SAP demodulation, dbx noise reduction, and audio AGC.

4. IC1404 (VHiAK4683EQ-1Q)

This IC provides for 2-channel A/D and 4-channel D/A (192-kHz sampling).

The built-in digital audio interfaces DIR (Digital Interface Receiver) and DIT (Digital Interface Transmitter) (192 kHz compatible, 6 inputs/1 output) are compatible with the AES3, IEC60958, S/PDIF, and EIAJ CP1201 standards. Both the DIR and DIT can handle 192-kHz sampling and 24-bit data. The DIR is also equipped with 6-channel input selector that detects not just PCM data but also Dolby Digital and other non-PCM data.

5. IC1407 (VHiTAS3108D-1Y)

The TAS3108 is a fully programmable digital audio processor that preserves high-quality audio by using a 48-bit data path, 28-bit filter coefficients, and a single cycle 28 x 48-bit multiplier with a 76-bit accumulator.

It has the following functions buitl in: 5band PEQ, 256tap Finit Impulse Response Filter, TI Virtual surround, TI Bassboost, Tone Control, and Subwoofer output.

6. IC1507 (VHiTMDS341+-1Y)

The TMDS341 single-chip IC is provided with multiple switching function, in which up to 2 HDMI ports can be selected for a single display input terminal.

This 2-port device is also equipped with signal conditioning function and switching function. Each of the ports supports 4-channel TMDS signal, one hot plug detection, and I2C interface. Each of the 4 TMDS channels, in turn, provides maximum 1.65-Gbps signal transmission rate, fixed 8-dB input equalization, and enable/disable 3-dB output de-emphasis function.

On this IC, the INPUT-4/5 HDMI port are switched.

7. IC1510 (VHiSii9025+-1Q)

The TMDS receiver IC decodes differential serial-transmitted signal to parallel signal. Compatible with the HDCP system, encrypted signals can also be received.

This IC responds to the INPUT-4, 5HDMI (High-Definition Multimedia Interface)selected by IC1507.

8. IC2002 (RH-iXB986WJQZQ)

The monitor microprocessor is intended to communicate with the main microprocessor and to operate the system. It also controls power of the entire system.

9. IC3301 (RH-iXB925WJQZQ)

This video processor consists of an LSI system-on-chip device. For high-precision data processing, it is equipped with a high-precision 166-MHz, 10bit A/D converter.

For processing analog video signals, this IC supports the NTSC-compatible high-performance multi-format 2D/3D digital Y/C separation video decoder as well as the video format conversion engine. It provides for 10-bit video signal processing.

10. IC3501/3502 (RH-iXB822WJQZQ)

These ICs are 128-Mbit GDDR SDRAM (Graphic Double Data Rate Synchronous DRAM), providing a memory for image processing and buffering OSD data.

7 – 1

Page 48

LC-32D62U/LC-37D62U 1st

11. IC8101 (RH-iXB281WJZZQ)

This LSI with MPEG-2 system decoder performs back-end processing for digital broadcasting. It is equipped with a CPU (processor core: AM33-3), de scrambler (DES), transport stream de-multiplexer, video decoder (MPEG-2 MP@HL compatible), graphic processor, audio decoder (AC3 compatible), and an NTSC video encoder.

After receiving transport stream from the tuner, the LSI decrypts pay-TV broadcasts with the de scrambler. Then using the de-multiplexer, it separates and decodes the compressed audio and video data to send the signals. In the visual system, the graphic processor makes it possible to overlap subtitles and perform scaling. Digital video signals (Y, Pb and Pr, or 480I/P, 720P and 1081I) and down-converted NTSC signals (Y/C and composite, or 480I) can be sent simultaneously. As for the audio system, decoded AC3 audio can be overlapped with sound effects.

The LSI also contains various interfaces (I2C x 2, UART x 3, an SD Memory Card interface, a Cable CARD interface, etc.) and a GPIO. Using these interfaces, the CPU controls peripheral circuits of the tuner, SD Memory Cards, Cable CARDs, etc. One of the UARTs is used by the CPU to establish communications with the monitor microcomputer in the unit, where remote control information or other data is exchanged. Another UART is used for RS-232C serial communications to connect the unit to a PC.

12. IC8301/8302/8303/8304 (RH-iXB765WJQZQ)

These are 256-Mb (4 Mb x 16 I/O x 4 banks) F-die DDR SDRAMs.

13. IC8451 (RH-iXC092WJQZQ)

The 64-Mbit page mode flash memory device stores the main CPU program.

14. IC8601 (RH-iXB684WJQZQ)

The RH-IXB684WJQZQ comprises a family of advanced QAM and VSB demodulator for the Digital Cable Ready and ATSC environments.

This IC is configurable to operate in either the ITU-J.83B/SCTE DVS-031 compliant 64 QAM or 256 QAM modes used by digital cable systems, or the ATSC compliant 8VSB mode used in digital terrestrial broadcasting.

For digitally modulated input signals (QAM or 8VSB), the RH-IXB684WJQZQ outputs a parallel or serial MPEG compliant transport stream.

15. IC8702 (VHiTC6384AF1EQ)

This is a Standard Memory Interface to SD Memory Controller.

16. IC9101 (RH-iXB997WJQZQ)

The high-performance CPLD (Complex Programmable Logic Device) is controlled by the main CPU to send control signals to various mounted devices.

7 – 2

Page 49

MEMO

LC-32D62U/LC-37D62U 1st

7 – 3

Page 50

LC-32D62U/LC-37D62U 1st

MAIN Unit

E028

Card

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LC-32D62U/LC-37D62U 1st

CHAPTER 8. OVERALL WIRING/BLOCK DIAGRAM

Service Manual

[1] OVERALL WIRING DIAGRAM (LC-32D62U)

12345678910

8 – 1

Page 51

POWER㵘Unit

RDENCA203WJQZ

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LC-32D62U/LC-37D62U 1st

10 11 12 13 14 15 16 17 18 19

8 – 2

Page 52

LC-32D62U/LC-37D62U 1st

MAIN Unit

E028

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[2] OVERALL WIRING DIAGRAM (LC-37D62U)

12345678910

8 – 3

Page 53

POWER㵘Unit

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LC-32D62U/LC-37D62U 1st

10 11 12 13 14 15 16 17 18 19

8 – 4

Page 54

LC-32D62U/LC-37D62U 1st

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Page 55

LC-32D62U/LC-37D62U 1st

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10 11 12 13 14 15 16 17 18 19

8 – 6

Page 56

LC-32D62U/LC-37D62U 1st

SDTIA1 29

BICKA 15

SDTOA 16

RX0 2

PDN 25

XT0 22

XT1 21

RIN6 62

LIN6 61

RIN5 60

LIN5 59

RIN2 54

LIN2 53

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LOUT1 40

ROUT2 37

LOUT2 38

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27 SDOUT1

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91,106,115,127,138

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64,68,72

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33 R1PWR5V

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QEO16-23 119,118,117,116 113,112,111,110

29 DSDA1

30 DSCL1

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59 R1XC+

62 R1XO-

63 R1XO+

66 R1X1-

67 R1X1+

70 R1X2-

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27 CY2

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5Y4

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27 SCL

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51 LIN1

52 RIN1

23 TX

58 RIN4

57 LIN4

24 MCLK2

5RX2

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D1307

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92-88

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[4] MAIN BLOCK DIAGRAM

12345678910

8 – 7

Page 57

LC-32D62U/LC-37D62U 1st

VIDEO1

COMP1

VIDEO2

S-VIDEO2

COMP3

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71 V2

31 PR2

23 PB2

40 SW2

27 CY2

2S-3

3V4

42 SW3

5Y4

80 S2-3

7C4

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38 SW1

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TXD

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IXB986WJ

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HDMI_SCDT

11:Vss,75:AVss

10 11 12 13 14 15 16 17 18 19

8 – 8

Page 58

LC-32D62U/LC-37D62U 1st

MAIN Unit

(Side-A)

LC-32D62U/LC-37D62U 1st

CHAPTER 9. PRINTED WIRING BOARD ASSEMBLIES

Service Manual

[1] MAIN Unit

12345678910

9 – 1

Page 59

LC-32D62U/LC-37D62U 1st

10 11 12 13 14 15 16 17 18 19

9 – 2

Page 60

LC-32D62U/LC-37D62U 1st

SC1702

LUG1104

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FB1505

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MAIN Unit (Side-B Chip)

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TL8606

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R8626

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IC1303

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D1314D1309

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R1342

R1348

R1349

FDC2

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Page 65

LC-32D62U/LC-37D62U 1st

R2036

TL9026

R2029

R2098

TL9027

R2001

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D2006D2007

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C1536

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tptp1

R3569

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R2618

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R3532

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C3506

C3507

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TL2624

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C9630

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R9635

10 11 12 13 14 15 16 17 18 19

9 – 8

Page 66

LC-32D62U/LC-37D62U 1st

TERMINAL Unit (Side-A)

[2] TERMINAL Unit

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Page 67

LC-32D62U/LC-37D62U 1st

10 11 12 13 14 15 16 17 18 19

9 – 10

Page 68

LC-32D62U/LC-37D62U 1st

TERMINAL Unit (Side-A Chip)

k001

D521

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C566

C2749 R27

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LC-32D62U/LC-37D62U 1st

FB7502

R7516

R7513

FB7506

R7512

C7506

IC7501

C7501

C7502

C7505

C7504

C7503

FL501

R612

FB532

R613

FB533

FL502

FB531

FL503

R611

R614

P502

R615

R616

FL504

R617

C2742

FB2709

D2707

R618

C2740

R619

FB2710

C2733

FB534

D2706

C2739

P2703

C2734

FB2711

D2705

C2738

LUG2701

C2741

FB2712

D2704

C2737

R2714

C2729

R2713

C2731

L2704

L2703

C2726

C2725

C2705

C2707

C2710

C2708

R2719

FB2704

C2703

C2714

C2701

C2715

C2702

C2746

C2712

C2704

C2713

IC2701

R2701

C2747

R2702

C2716

R2703

C2720

R2705

R2704

C2709

C2706

C2745

R2706

C2711

L2701

L2702

C2727

C2728

C2732

R2723

R2722

C2730

R2707

C2719

R2708

IC2703

C2722

R2710

C2723

R2711

C2721

R2709

R2721

R2712

IC2702

R2720

C2724

C2743

D2702

C2735

C2753

C2755

LF1

C2750

R2718

C2752

R2716

C2748

C2736

IC2704

R2715

C2751

R2726

R2717

R2730

Q2702

Q2701

Q2703

R2731

R2734

R2728

R2729

C2754

R2733

R2732

C2756

R2727

C554

C568

C566

C2749 R2725

R2724

D2703

R2735

P2704

C2718

LUG2702

D2701

C2717

C2744

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LC-32D62U/LC-37D62U 1st

TERMINAL Unit (Side-B)

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LC-32D62U/LC-37D62U 1st

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LC-32D62U/LC-37D62U 1st

[3] R/C, LED Unit

R/C, LED Unit (Side-A) R/C, LED Unit (Side-A Chip)

P101

RMC101

SLD101

C107

R132

D101

R101

R138

R110 R105

R106 R104 R107

C104

Q103

R121

R111

R113

Q105

Q106

R112 R114

R135

R109

R123

R126

IC101

C105 R136

R124

Q104

D103

D114

D115

C102

R117

R102 R137 R108

Q102

D113

Q107

R127

R122

C106

J101

R115

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Page 73

[4] KEY Unit

LC-32D62U/LC-37D62U 1st

KEY Unit (Side-A) KEY Unit (Side-A Chip)

D155

S157

P151

S153

S151

D151

R152

R151

S152

S154

D152

R153

S155

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LC-32D62U/LC-37D62U 1st

CHAPTER 10. SCHEMATIC DIAGRAM

Service Manual

[1] DESCRIPTION OF SCHEMATIC DIAGRAM

1. VOLTAGE MEASUREMENT CONDITION:

1) The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.

2. INDICATION OF RESISTOR & CAPACITOR:

RESISTOR

1) The unit of resistance "Ω" is omitted.

(K=kΩ=1000Ω, 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.

AVIS DE SECURITE IMPORTANT:

LES PIECES MARQUEES " " ( ) SONT IMPORTANTES POUR MAINTENIR LA SECURITE DE L'APPAREIL. NE REMPLACER CES PIEDES QUE PAR DES PIECES DONT LE NUMERO EST SPECIFIE POUR MAINTENIR LA SECURITE ET PROTEGER LE BON FONCTIONNEMENT DE L'APPAREIL.

10 – 1

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