Toshiba 37XV565D Schematic

SERVICE MANUAL

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LCD Color Television

37XV565D

Ver. 2.00

This model is classified as a green product (*1), as indicated by the underlined serial number. This

Service Manual describes replacement parts for the green product. When repairing this green

product, use the part(s) described in this manual and lead-free solder (*2).

For (*1) and (*2), refer to

GREEN PRODUCT PROCUREMENT

and

LEAD-FREE SOLDER

ADJUSTMENT

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Service Mode

Entering to Service Mode

1. Press button once on remote control.

↓↓↓↓

Service Mode display

2. Press button again and hold button down.

3. While holding the button, press MENU button on TV set.

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Displaying the Adjustment Menu

Press MENU button on TV.

Service Mode

Press

Adjustment Mode

↑↑↑↑ ↓↓↓↓

Press

Key Function in the Service Mode

The following key entry during display of adjustment menu provides special functions.

CAUTION: Never try to perform initialization unless you have changed the

memory IC.

button (on remote control)

Test signal selection

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Selection of the adjustment items PROGRAMME (on TV or remote control)

Change of the data value Volume +/- (on TV or remote control)

Adjustment menu mode ON/OFF MENU button (on TV)

Initialization of the memory (IC510) "i+" + PROGRAMME button on TV

Reset the count of operating

protect circuit to "00"

Turn off TV Micro I2C bus communication "i+" + Volume + button on TV

"RCUT" selection 1 button

"GCUT" selection 2 button

"BCUT" selection 3 button

"CNTX" selection 4 button

"COLC" selection 5 button

"UVTT" selection 6 button

Automatic A/D Adjustment

(PC, Component, Composite (PAL, NTSC))

Self diagnostic display ON/OFF 9 button

"i+" + PROGRAMME button on TV

7 button

Selecting the Adjusting Item

Every pressing of PROGRAMME button in the service mode changes the adjustment items in the order of table below. ( button for reverse order)

SETTING & ADJUSTING DATA

[ SERVICE MODE ]

ADJUSTING ITEMS AND DATA IN THE SERVICE MODE:

Note:

The image system data of RCUT-BDRV is different by each image format.

The PAL value is indicated in the table.

Item Name of adjustment Address

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BRTC BRIGHTNESS CENTER --

COLC COLOR CENTER --

UVTT BASE BAND TINT --

CNTX CONTRAST MAX --

OPT1 TV SET OPTION 1 00F1

OPT2 TV SET OPTION 2 00F2

OPT3 TV SET OPTION 3 00F3

OPT4 TV SET OPTION 4 (PANEL OPT DATA FOR VENDOR & INCH) 00F4

OPT5 TV SET OPTION 5 00F5

SETID MODEL ID 00FE

VOLX MAX VOLUME LIMITED 0108

SYSNG Counter for Main sync disable detection at search 0032

SYSOK Counter for Main sync enable detection at search 0033

SYSTM Main sync check cycle (2ms x SY1TM) 0035

SY2OK Counter for Sub sync enable detection 0036

SY2NG Counter for Sub sync disable detection 0037

HVSEP AV Switch Setting data 1 01B0

ASYNC AV Switch Setting data 2 01B1

FREQ2 AV Switch Setting data 3 01B2

HCUNT AV Switch Setting data 4 01B3

SDET1 AV Switch Setting data 5 01B4

SDET2 AV Switch Setting data 6 01B5

SY1TM Main sync check cycle (2ms x SY1TM) 01B8

SY1OK Counter for Main sync enable detection 01B9

SY1NG Counter for Main sync disable detection 01BA

Factory preset data will be loaded after setting Model ID data.

(Refer to Initialization of Memory Data of IC510 and setting data of signal board.)

Adjusting the Data

Pressing of VOLUME +/- button will change the value of data in the range from 00H to

FFH. The variable range depends on the adjusting item.

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I2C Bus Off

Turn off I2C communication between IC500, IC210 and IC320.

1) Press and hold the i+ button on the remote control, then press the Volume + button on the TV.

2) Display "BUS Off" OSD.

3) I2C communication turned off.

Note:

To return Bus on status, press and hold the i+ button on the remote control, then press the Volume + button on the TV again. TV will be turned off and automatically turned on, then status will be Bus On.

Setting TVOP

Enter to service mode and select menu of TVOP by pressing P or P during display of adjustment menu. After selecting TVOP, press + or - to set I2C check function to

disable or enable as below.

TVOP FUNCTION DESCRIPTION 1 0 (Normal)

D5 (bit5) I2C check between TV-Micro and Standby-Micro (WDT) Disable Enable

Setting Panel Option Data

Panel option data is subject to OPT4. Enter to service mode and select menu of OPT4 by pressing P or P during display of

adjustment menu. After selecting OPT4, press + or - to set OPT4 value as table below.

Panel option data

Series Model name Panel vendor OPT4 value

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XV565D EU Digital 37XV565D LGD 0x16

OPT4

Ex. OPT4 value 0x65 indicates that panel vendor is SAMSUNG and panel size is 32.

Upper 4bit is decided as below table.

OPT4 (Upper 4bit)

Panel

vendor

LGD 0 0 0 1

SHP 0 0 1 0

CMO 0 0 1 1

AUO PMVA 0 1 0 0

AUO AMVA 0 1 0 1

SAMSUNG 0 1 1 0

IPS 0 1 1 1

(bit7)

(bit6)

Lower 4bit is decided as below table.

(bit7)

(bit6)

(bit5)

(bit4)

OPT4 (Lower 4bit)

(bit4)

(bit3)

(bit2)

(bit1)

(bit0)

Panel size 32 0 1 0 1

37 0 1 1 0

42 0 1 1 1

46 1 0 1 0

52 1 0 1 1

Convert from Bit (Binary) to Hex

The table for converting from bit (D7-D0) to hex (0x**).

BIT (Binary)

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High nibble

Low nibble

HEX

D7 D6 D5 D4

D3 D2 D1 D0

8 1

9 1

A 1

B 1

0 0 0 0

0 0 0

0 0

1 1

1 1 1

0 0 0

0 0

1 1

0 0

1 1

C 1 1

D 1 1

E 1 1 1

F 1 1 1 1

0 0

E.g. If Bit D7-0 = 0101 1010, Hex data is 0x5A.

Exit from Service Mode

Pressing POWER button to turn off the TV once.

Initialization of Memory Data of IC510 and Setting Data of Signal Unit

After replacing IC510 or signal board, the following initialization is required.

CAUTION: Never attempt to initialize the data unless IC510 has been

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replaced.

Whenever using new signal board to the set, set the Model ID data

according to Panel option data.

1) Enter the service mode.

2) Select menu of ID by pressing P or P during display of adjustment menu in the service mode.

3) Change ID data into MODEL ID to initialize by pressing + or -, refer to table below.

4) Press and hold the CALL button on the remote control, then press the PROGRAMME

button on the TV.

5) Initialization progress dialog including model name and panel vendor is shown.

Progress status is "WRITING".

6) Progress status is changed "OK" and power cycle (automatically). Then IC510

initialization has been completed.

7) Enter the service mode and select version check mode. Confirm if model name and

model id set is correct. If not, repeat steps 1) to 6).

Note:

In case initialization by setting wrong MODEL ID is done, there is a possibility of

abnormal display.

8) Set I2C check function of TVOP to enable.

9) Check the picture carefully. If necessary, adjust any adjustment item above.

Perform "Auto tune" on the owner's manual.

MODEL ID (HEX) Model name Panel vendor

0x19 37XV565D LPD

Initializing Data setting flowchart after replacing the Signal Unit

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Test Signal Selection

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Every pressing of button on the remote control changes the built-in test patterns on screen as described below in Service Mode.

Picture Signal

Red raster

Green raster

Blue raster

All Black

All White

Self Diagnostic Function

1. Press "9" button on remote control during display of adjustment menu in the service

mode. The diagnosis will begin to check if interface among IC's is executed properly.

2. During diagnosis, the following displays are shown.

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* Self check display and Item are subject to the models.

TV CPU SW Version:

Version information of TV Micro SW: Display 1 byte data. (Hex)

EEPROM Version:

Version information of TV Micro EEPROM: Display 1 byte data. (Hex)

Power On Time: Total hour of turn the TV on. (Unit: H) (Decimal)

Main PLL: Displays Data 11 - Data 18 (8 bytes) of tuner control data. (Hex)

BL_STATUS:

BL_STATUS 1: The total number of times that the panel did not light. (backlight double-

light also failed) (Decimal)

BL_STATUS 2: The number of times that the backlight failed to light. (Decimal)

Block:

: ATV reception mode

V1 - V6 : VIDEO 1-6 input mode (see SELF DIAGNOSTIC BLOCK TABLE)

PC : PC mode

DTV : DTV mode

For current input: OK: Signal Sync Detected

NG: No Sync Detected

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TV Status: "official" is normal.

Bus Errors: "none" is normal.

Block:

UV ATV

V4 HDMI1

V5 HDMI2

V6 HDMI3

V7 --

V8 --

V9 --

PC PC

YUV --

DTV DTV (Digital Only)

(SCART (FULL))

(SCART (S+AV))

(Component/Composite)

Version Check Mode

1. Press "9" button twice on remote control during display of adjustment menu in the

service mode.

The version of main MPU will be checked.

2. During Version Check, the following displays are shown.

* Version check display and Item are subject to the models.

TV Model

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Boot Code Version

Core SW Version

Seine SW Version

TV Micro SW Version:

Version information of TV Micro SW: Display 1 byte data.

TV Micro EEPROM Version:

Version information of EEPROM: Display 1 byte data.

EDID Checksum:

EDID data check item. Display channel numbers depend on HDMI input numbers.

Pass: EDID data is good.

Fail: EDID data is no good.

Global Data Version

LCD Panel Opt:

Panel Option (OPT4) Data: Display 1 byte data.

Factory Test Status: Optional Data Bits that can be used by factory.

A/D Adjust:

A/D adjustment item.

COMP

Component input

--PC : PC input

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--OK : A/D adjustment set correctly.

--NG : A/D adjustment set incorrect.

-- : A/D adjustment is not needed. Because its picture format is not used.

LED Indication

The Green and Red LEDs on the TV (at the bottom center of the TV) indicate the TV's

status, as described below.



Red ON (solid) and Green OFF = The TV power cord is plugged in.



Green ON (solid) and Red ON = The On timer is operating.

1 Green is OFF;

Red blinks continuously at 0.5-

second intervals.

2 Green is OFF;

Red blinks continuously at 1-

second intervals.

LED Indication Condition Solution

Abnormal operation Turn OFF the TV and unplug

Abnormal operation of

BUS line.

DTV Software Upgrade - While Watching TV

1. Extract upgrade files onto an SD card.

2. Connect service jig, FWA1209, to P404A.

the power cord.

Plug the power cord in again

and turn ON the TV.

Turn OFF the TV and unplug

the power cord.

Plug the power cord in again

and turn ON the TV.

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3. Power TV on.

4. Insert SD card into the slot on FWA1209.

The following OSD will be displayed:

5. Highlight OK and press the OK key on the remote.

6. Upgrading progress for OSD is displayed on TV as bellow.

Please never power off while updating.

7. After upgrading the software completely, following OSD is displayed on TV.

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8. Remove the SD card.

9. Upon completion the power will off/on automatically.

DTV Software Upgrade - from Boot Up

1. Extract upgrade files to an SD card.

2. Unplug TV.

3. Insert the SD card into service jig, FWA1209, and connect it to P404A.

4. Plug in TV and confirm LED indication on the front of the set.

a. The green LED will blink in groups of three several times.

b. The red and green LEDs light up, indicating that the set is updating.

5. When only the Red LED is lit, upgrading is successful.

6. Unplug the set and remove the SD card.

FUNCTION AND OPERATION

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The Remote Control

Simple at-a-glance reference of your remote control.

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FUNCTION AND OPERATION

television. Whilst all the necessary adjustments and controls for the television are made using

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Controls and Input Connections

A wide variety of external equipment can be connected to the input sockets on the side of the

the remote control, the buttons on the television may be used for some functions.

Switching On

Using the Remote Control

Using the Controls and Connections

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FUNCTION AND OPERATION

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Startup Application

Before switching on the television put your decoder and media recorder to

are connected.

Quick Setup

Standby

if they

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Auto Tuning

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Auto Channel Update

Analogue Switch-off

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FUNCTION AND OPERATION

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DTV Settings

Channels

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Manual Tuning

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