Toshiba 32XV566D Schematic

SERVICE MANUAL

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LCD Color Television

32XV566D

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

© TOSHIBA CORPORATION

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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XV566D EU Digital 32XV566D SAMSUNG 0x65

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

D7

(bit7)

(bit6)

Lower 4bit is decided as below table.

D7

(bit7)

(bit6)

D6

D6

D5

(bit5)

D5

(bit5)

D4

(bit4)

OPT4 (Lower 4bit)

D4

(bit4)

D3

(bit3)

D3

(bit3)

D2

(bit2)

D2

(bit2)

D1

(bit1)

D1

(bit1)

D0

(bit0)

D0

(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

0

1

2

3

4

5

6

7

8 1

9 1

A 1

B 1

0 0 0 0

0 0 0

0 0

0 0

0

0

0

0

1

1

1 1

1 1 1

0 0 0

0 0

0

0

1

1 1

0 0

0

1

1 1

1

0

1

0

1

0

C 1 1

D 1 1

E 1 1 1

F 1 1 1 1

0 0

0

1

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

0x18 32XV566D SAMSUNG

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:

UV

: 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

V1

V2

V3

V4 HDMI1

V5 HDMI2

V6 HDMI3

V7 --

V8 --

V9 --

PC PC

YUV --

DTV DTV (Digital Only)

(SCART (FULL))

(SCART (S+AV))

(Component/Composite)

1

2

3

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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FUNCTION AND OPERATION

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ATV Manual Tuning

Tuning

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FUNCTION AND OPERATION

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Software Upgrade

Version

Auto Upgrade

Searching for New Software

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Reset TV

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SAFETY INSTRUCTION

should enter the mouth, rinse the mouth thoroughly with water. If the fluid should contact the

When attaching the LCD module to the LCD cover, position it appropriately and fasten

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Handling the LCD Module

Safety Precaution

In the event that the screen is damaged or the liquid crystal (fluid) leaks, do not breathe in or

drink this fluid.

Also, never touch this fluid. Such actions could cause toxicity or skin irritation. If this fluid

skin or clothing, wipe off with alcohol, etc., and rinse thoroughly with water. If the fluid

should enter the eyes, immediately rinse the eyes thoroughly with running water.

Precautions for Handling the LCD Module

CAUTION: The metal edges of the LCD module are sharp, handle it with

care.

The LCD module can easily be damaged during disassembly or reassembly; therefore,

always observe the following precautions when handling the module.

1.

at the position where the display can be viewed most conveniently.

2. Carefully align the holes at all four corners of the LCD module with the corresponding

holes in the LCD cover and fasten with screws. Do not strongly push on the module

because any impact can adversely affect the performance. Also use caution when

handling the polarized screen because it can easily be damaged.

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3. If the panel surface becomes soiled, wipe with cotton or a soft cloth. If this does not

remove the soiling, breathe on the surface and then wipe again.

If the panel surface is extremely solied, use a CRT cleaner as a cleaner. Wipe off the

panel surface by drop the cleaner on the cloth. Do not drop the cleaner on the panel.

Pay attention not to scratch the panel surface.

4. Leaving water or other fluids on the panel screen for an extended period of time can

result in discoloration or stripes. Immediately remove any type of fluid from the screen.

5. Glass is used in the panel, so do not drop or strike with hard objects. Such actions can

damage the panel.

6. CMOS-LSI circuitry is used in the LCD module, so avoid damage due to static

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electricity. When handling the module, use a wrist ground or anchor ground.

7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an

extended period of time.

8. Do not store the LCD module below the temperature conditions described in the

specifications. Failure to do so could result in freezing of the liquid crystal due to cold

air or loss of resilience or other damage.

9. Do not disassemble the LCD module. Such actions could result in improper operation.

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10. When transporting the LCD module, do not use packing containing epoxy resin

(amine) or silicon resin (alcohol or oxim). The gas generated by these materials can

cause loss of polarity.

PANEL IDENTIFICATION

name, the identification marking will be shown at the last digit of the set serial number on the

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Panel Identification

If the several panels are alternatively used in the same model without amending the model

specification label on the back cover.

In servicing, do not alter the panel because several setting and parts are different.

Marking Panel Vendor Marking Panel Vendor Marking Panel Vendor

A AUO J

B

C CMO L LGD U

D

E

F

G

H IPS R

K SAMSUNG T

M

N

P

Q

S SHARP

V

W

X

Y

Z

With this alternative use, some of key parts may differ and their combinations are

indicated with the suffix marking on the location number in the part list

(Miscellaneous).

e.g.

Location No. Part No. Description

B001A

B001B

MZ01A

MZ01B

75007869 LCD Panel, 32" LGD

75007870 LCD Panel, 32" AUO

75006036 LDVS Cable

75007893 LDVS Cable

U06A

KEY

U05A

POWER

MAIN

U03A AC-SW

U04A LED

U04B RMT

SAFETY INSTRUCTION

Always keep tools, components of the product, etc away from the children, These items

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WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY

PRECAUTION" AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW.

Safety Precaution

WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE

UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER.

THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED

BEFORE SERVICING THIS CHASSIS.

1. An isolation transformer should be connected in the power line between the receiver

and the AC line before any service is performed on the receiver.

2. Always disconnect the power plug before any disassembling of the product. It may

result in electrical shock.

3. When replacing a chassis in the cabinet, always be certain that all the protective

devices are put back in place, such as nonmetallic control knobs, insulating covers,

shields, isolation resistor-capacitor network, etc.

4.

may cause injury to children.

5. Depending on the model, use an isolation transformer or wear suitable gloves when

servicing with the power on, and disconnect the power plug to avoid electrical shock

when replacing parts. In some cases, alternating current is also impressed in the

chassis, so electrical shock is possible if the chassis is contacted with the power on.

6. Always use the replacement parts specified for the particular model when making

repairs. The parts used in products require special safety characteristics such as

inflammability, voltage resistance, etc. therefore, use only replacement parts that have

NEVER remodel the product in any way. Remodeling can result in improper operation,

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these same characteristics. Use only the specified parts when the mark is indicated
in the circuit diagram or parts list.

7. Parts mounting and routing dressing of wirings should be the same as that used

originally. For safety purposes, insulating materials such as isolation tube or tape are

sometimes used and printed circuit boards are sometimes mounted floating. Also make

sure that wirings is routed and clamped to avoid parts that generate heat and which use

high voltage. Always follow the manufactured wiring routes / dressings.

8. Always ensure that all internal wirings are in accordance before re-assembling the

external casing after a repairing completed. Do not allow internal wiring to be pinched

by cabinets, panels, etc. Any error in reassembly or wiring can result in electrical

leakage, flame, etc., and may be hazardous.

9.

malfunction, or electrical leakage and flame, which may be hazardous.

10. Touch current check. (After completing the work, measure touch current to prevent an

electric shock.)



Plug the AC cord directly into the AC outlet. Do NOT use an isolation transformer

for this check.



Connect a measuring network for touch currents between each exposed metallic part

on the set and a good earth ground such as a water pipe.

Annex D

(normative)

Measuring network for TOUCH CURRENTS

Resistance values in orms (Ω).

V: Voltmeter or oscilloscope

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(r.m.s. or peak reading)

Input resistance : 1 MΩ
Input capacitance : 200 pF

Frequency range : 15 Hz to 1 MHz and d.c. respectively

Appropriate measures should be taken to obtain the correct value in case of non

Note:

sinusoidal waveforms.

The measuring instrument is calibrated by comparing the frequency factor of with the
solid line in figure F.2 of IEC 60990 at various frequencies. A calibration curve is
constructed showing the deviation of from the ideal curve as a function of frequency.

TOUCH CURRENT = /500 (peak value).



The potential at any point (TOUCH CURRENT) expressed as voltage and
does not exceed the following value:

The part or contact of a TERMINAL is not HAZARDOUS LIVE if:

a) The open-circuit voltage should not exceed 35 V (peak) a.c. or 60 V d.c. or, if a) is not

met.

b) The measurement of the TOUCH CURRENT shall be carried out in accordance with

IEC 60990, with the measuring network described in

The TOUCH CURRENT expressed as voltages and , does not exceed the
following values:

- for a.c. : = 35 V (peak) and = 0.35 V (peak);

- for d.c. : = 1.0 V

The limit values of = 0.35 V (peak) for a.c. and = 1.0 V for d.c. correspond to

Note:

the values 0.7 mA (peak) a.c. and 2.0 mA d.c.

Annex D

of this standard.

Product Safety Notice

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Many electrical and mechanical parts in this chassis have special safety-related

characteristics. These characteristics are often passed unnoticed by a visual inspection and

the protection afforded by them cannot necessarily be obtained by using replacement

components rated for higher voltage, wattage, etc. Replacement parts which have these

special safety characteristics are identified in this manual and its supplements; electrical

components having such features are identified by the international hazard symbols on the

schematic diagram and the parts list.

Before replacing any of these components, read the parts list in this manual carefully. The

use of substitute replacement parts which do not have the same safety characteristics as

specified in the parts list may create electrical shock, fire, or other hazards.

SPECIFICATION

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SCHEMATIC DIAGRAM

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Precaution

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY

RADIATION PRECAUTION" FOR DIRECT VIEW CTV ONLY, "SAFETY

PRECAUTION" AND "PRODUCT SAFETY NOTICE" OF THIS MANUAL.

CAUTION: The international hazard symbols " " in the schematic diagram
and the parts list designate components which have special characteristics

important for safety and should be replaced only with types identical to

those in the original circuit or specified in the parts list.

The mounting position of replacements is to be identical with originals.

Before replacing any of these components, read carefully the SAFETY

PRECAUTION and PRODUCT SAFETY NOTICE.

Do not degrade the safety of the receiver through improper servicing.

Note:

1. RESISTOR

Resistance is shown in ohm [K=1,000, M=1,000,000]. All resistors are 1/6 W and 5 %

tolerance carbon resistor, unless otherwise noted as the following marks.

1/2R : Metal or Metal oxide of 1/2 watt

1/2S : Carbon composition of 1/2 watt

1RF : Fuse resistor of 1 watt

10 W : Cement of 10 watt

K : ±10 %

G : ±2 %

F : ±1 %

2. CAPACITOR

Unless otherwise noted in schematic, all capacitor values less than 1 are expressed in

µF, and the values more than 1 in pF.

All capacitors are ceramic 50 V, unless otherwise noted as the following marks.

= Electrolytic capacitor

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= Mylar capacitor

3. The parts indicated with " " have special characteristics, and should be replaced with
identical parts only.

4. Voltages read with DIGITAL MULTI-METER from point indicated to chassis ground,

using a color bar signal with all controls at normal, line voltage at nominal AC volts.

5. Waveforms are taken receiving color bar signal with enough sensitivity.

6. Voltage reading shown are nominal values and may vary ±20 % except H.V.