TOSHIBA 52HMX84, 62HMX84 Service Manual

FILE NO. 020-200418

SERVICE MANUAL

Projection Television

52HMX84 62HMX84

DOCUMENT CREATED IN JAPAN, Aug., 2004

TABLE OF CONTENTS

CHAPTER 1 GENERAL ADJUSTMENTS

SAFETY INSTRUCTIONS .............................................................................................................................................. 3

SERVICE MODE ............................................................................................................................................................ 4

ELECTRICAL ADJUSTMENT ........................................................................................................................................ 7

CHAPTER 2

SPECIFIC INFORMATIONS

SETTING & ADJUSTING DATA ...................................................................................................................................... 8

LOCATION OF CONTROLS ........................................................................................................................................... 9

PROGRAMMING CHANNEL MEMORY ....................................................................................................................... 11

LAMP UNIT REPLACEMENT ....................................................................................................................................... 13

LIGHT ENGINE REPLACEMANT.................................................................................................................................

PARTS REPLACEMENT IN LIGHT ENGINE...............................................................................................................

EXPLODED VIEW ........................................................................................................................................ ................ 20

MECHANICAL DISASSEMBLY .................................................................................................................................... 21

CHASSIS REPLACEMENT PARTS LIST ..................................................................................................................... 22

PC BOARDS TOP AND BOTTOM VIEW ..................................................................................................................... 30

TERMINAL VIEW OF TRANSISTORS ......................................................................................................................... 42

CIRCUIT BLOCK DIAGRAM ........................................................................................................................................ 45

SPECIFICATIONS .................................................................................................................................................... END

APPENDIX:

CIRCUIT DIAGRAM

CHAPTER 1 GENERAL ADJUSTMENTS

SAFETY INSTRUCTIONS

SAFETY PRECAUTION

WARNING: Service 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. When the replacing a chassis in the cabinet, always be certain that all the prospective devices are put back in place, such as; non-metallic control knobs,insulating covers, shields, isolation resistor-capacitor network etc.

PRODUCT SAFETY NOTICE

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 character istics as specified in the parts list may create shock, fire, or other hazards.

SERVICE MODE

1. ENTERING TO SERVICE MODE

1) Press MUTE button twice on Remote Control.

MUTE

2) Press MUTE button again to keep pressing.

2. DISPLAYING THE ADJUSTMENT MENU

1) Press MENU button on TV.

Service mode

Press

Adjustment mode

3. SELECTING THE ADJUSTING ITEMS

1) Every pressing of CHANNEL button in the service mode changes the adjustment items in the order of table-2. ( button for reverse order)

Refer to table-1 for preset data of adjustment mode. (See SETTING & ADJUSTING DATA on page 8)

3) While pressing the MUTE button, press MENU button on TV set.

(Service mode display)

Item

Data

4. ADJUSTING THE DATA

1) Pressing of VOLUME or button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.

5. EXIT FROM SERVICE MODE

1) Pressing POWER button to turn off the TV once.

6. 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 are executed properly.

2) During diagnosis, the following displays are shown.

SELF CHECK NO. 23 * * * * * * POWER : 000 BUS LINE : OK BUS CONT : OK BLOCK : MAIN SUB SET ID : 80 E2P VER : 08 OPT1 : 00 OPT2 : A0 SW VER : DLE May 13 2004 17:**:**

HDMI NO ******** ERR CDDE : 00

BEP SW VER : 42 E2R VER : 02

Thermo1 : +51 Thermo2 : +50

TIME TV : ****** LAMP :

****

Part number of microprocessor (IC609)

Operation number of protection circuit (The number of times of the power supply OFF by fan stop) . . . . “000” is normal.

BUS line check “OK” ................... Normal

“SCL-GND” or “NG” ........... SCL-GND short circuit

“SDA-GND” or “NG” ........... SDA-GND short circuit

“SCL-SDA” or “NG” ............ SCL-SDA short circuit

BUS line ACK (acknowledge) check

“OK” ................... Normal

Sync. signal check Green display ..... Normal

Red display ........ NG

MAIN ........ Main sync

SUB .......... Sub sync (when turn on the PIP)

ID code for TV Set Version of "EEP" Data for "OPT"

Temperature of DMD Temperature of the color wheel neighborhood Software version history HDMI Software

NO ***** .....Serial No.

ERR CODE .....Error Code

BEP Software Version

SW VER : **.....Version

E2P VER : ** EEP ROM Version

Use time

TV .....TV set on time (hour)

LAMP.....LAMP set on time (hour)

(It may shift from TV set on time.)

7. LED indicationsn

The green and red LED lights on the TV control touchpad (on the lower right corner of the TV screen) indicate the TV's current status, as follows:

Green ON = Control touchpad being pressed.

Red ON = Power ON.

Green and/or Red blinking

(see table below for condition and solution).

Control touchpad on TV front

MENUVOLUMECHANNELEXITTV/VIDEO POWER

Red indicator

Green indicator

LED Indication

Red and Green turn off.

Red lights solid and Green off.

Red and Green lights solid.

Green blinks at 1-second intervals;

Red off.

Green blinks at 0.3-second inter-

vals; Red lights solid.

Green lights solid and Red blinks

at 0.5-second intervals.

Green and Red blink at 1-second

intervals.

Red blinks at 0.5-second intervals;

Green off.

Red blinks at 1-second intervals;

Green off.

Red blinks three times; Green off.

Red and Green blinks three times.

Condition

Power supply OFF. (AC)

Power supply OFF. (Standby)

(North America)

Power supply ON.

Touched the touchpad

Lamp LPS mode

The lamp is not working properly.

The lamp unit door is not seated

properly. (U)

The lamp is not working properly

after the third automatic reset (see

item #7). (U)

FAN (Light engine unit) has

stopped.

BUS line is damaged

The color wheel has stopped.

Temperature rises abnormally.

(U) is restoration by the user.

Solution

The TV automatically will try to reset itself

three times.

Turn the POWER OFF and unplug the power

cord. Review “How to replace the lamp unit”

on pages 13-15 to ensure that the lamp unit

door is installed securely.

Turn the POWER OFF and then ON again. If

the problem persists, replace“the lamp unit

(see pages 13-15).

• Is the output voltage of the supply voltage

regulator for the FAN in the power circuit

normal?

• Has dust accumulated in the FAN?

If the output voltage is not abnormal,

replace the faulty FAN with a new one.

• Check the faulty device through the self

diagnostics function under SERVICE mode.

• Does BUS line (SOL, SDA) work normally?

If the BUS line is under abnormal

conditions, replace the faulty device with

a new one.

• Is the output voltage of the power supply

circuit normal?

If the output voltage is normal, replace the

engine with a new one.

• Is the ventilating hole in the set (exhaust

slot on the rear) blocked or covered?

• Is FAN rotating normally?

• Has dust accumulated in the ventilating

hole?

If no abnormally conditions are found,

replace the engine with a new one.

ELECTRICAL ADJUSTMENT

DLE-PJTV (52HM84) Adjustment Method

Adjustment ITEM

ADC Offset Voltage (Scaler board)

Horizontal Picture Position (HPOS)

Vertical Picture Position (VPOS)

Process /Instructions

1. Make TV to be in 'M'.

2. Connect 10 Step video signal (1080i) to 'Color Stream1'.

3. Change Video Input to Color Stream1.

4. Start Auto adjustment by '40 EE A3 C5' remote code sending.

1. Adjust HPOS data to make Left and Right side

picture position to be equality.

Alignment SPEC; Difference of absolute value between left and right side bar should be in 0.5 bar.

Absolute {(Left Side bar) - (Right Side Bar)} <

0.5

1. Adjust VPOS data to make Top and Bottom side picture position to be equality.

Alignment SPEC; Difference of absolute value between top and bottom side bar should be in 0.5 bar.

Remark

[OSD INDICATION] During Adjustment ; 'A/D ADJUSTING' After Finish adjusting ; 'A/D ADJUSTMENT OK' -->

Adjustment succeeds.

'A/D ADJUSTMENT NG' -->

Adjustment fails.

[Set Condition] Receive Ch12 (RETMA signal). Picture size is FULL.

White Balance

Absolute {(Top Side bar) - (Bottom Side Bar)} < 0.5

1. Input white raster signal.

2. Measure the Color coordinate data by CA-210.

3. Adjust RDRV, GDRV and BDRV to make color

coordinate data to be x=0.271 y=0.276

0.002.

0.002 and

CHAPTER 2 SPECIFIC INFORMATIONS

SETTING & ADJUSTING DATA

SERVICE MODE

ADJUSTING ITEMS AND DATA IN THE SERVICE MODE:

Item Name of adjustment

RCUT R CUT OFF GCUT G CUTOFF BCUT B CUT OFF RDRV R DRIVE GDRV G DRIVE BDRV B DRIVE BRTC BRIGHT CENTER SCNT COLC COLOR CENTER UVTT BASE BAND TINT CNTX SUB CONTRAST MAX HPOS H-POSITION (PAL/DFS) VPOS CWDH CWDL DMDB DMD BIAS OPT0 TV SET OPTION

Note:

The image system data of RCUT-CNTX is different by each image format. The NTSC value is indicated in the table.

SUB CONTRAST FOR TV

V-POSITION DC SHIFT (PAL/DFS) COLOR WHEEL DELAY (HIGH) COLOR WHEEL DELAY (LOW)

Preset Data

60H 60H 64H 48H 53H 5FH 76H 20H D0H 40H 7FH 00H 00H 00H FAH 03H 00H

Table-1

Item Name of adjustment

OPT2 TV SET OPTION TVOP TV OPTION PLLW0 PLL WAIT TIME PLLW1 PLL WAIT TIME PLLW2 PLL WAIT TIME PLLW3 PLL WAIT TIME PLLW4 PLL WAIT TIME PLLW5 PLL WAIT TIME V01 VOLUME (DATA) V25 VOLUME (DATA) V50 VOLUME (DATA) V75 VOLUME (DATA) V100 VOLUME (DATA) MODH MODUS DATA HIGH MODL MODUS DATA LOW PRES FMAM PRESCALE SCTH SCTL

VOLUME SCART OPTION HIGH VOLUME SCART OPTION LOW

Preset Data

A0H 40H 14H 03H 0FH 05H 14H 04H 23H 4AH 63H 6FH 73H 20H 91H 24H 73H 01H

LOCATION OF CONTROLS

VIDEO 3

Front

Remote control sensor

(Behind the screen)

Side

Push to open.

Control touchpad on TV front (Gently touch the printed keys.)

EXIT

zyx •

TV/VIDEO

MENUVO LUMECHANNELEXITTV/VIDEO POWER

Volume x•

Channel zy

POWER

MENUVOLUMECHANNELEXITTV/VIDEO POWER

Green and Red LED indicators*

* Green ON = Touchpad key being pressed;

Red ON = Power ON. See page 64 for additional LED indications.

VIDEO 3 Vid

/audio inputs

ANT OUTAUDIO

ANT-2

ANT-1

Video/audio inputs

ANT OUTAUDIO

ANT-2

ANT-1

Back

120 VAC

60 Hz

VIDEO 1/2

ColorStream

HD-1/HD-2

Video/Audio OUT

Variable Audio OUT

HDMI IN

Remote Control

POWER

turns the TV on and off. Press POWER to turn the TV on. The Red LED indicator will be illuminated. Press POWER again to turn the TV off.

Note:

If the Quick Restart feature is in OFF mode, it can take up to several seconds for

the picture to appear. See page 28 for details.

SLEEP

allows access to the automatic TV shut-off function

LIGHT

The first press of the LIGHT button lights the keypad and turns on the Illumination mode. With the Illumination mode on, pressing any other key lights the keypad for 5 seconds (10 seconds if you’re in programming mode). Subsequent presses of the LIGHT button toggle between turning the Illumination mode on and off.

Channel Numbers (0-9, 100)

MODE

cycles through the six device modes: TV, CABLE/SAT, VCR,

allow direct access to channels

DVD, AUDIO1, and AUDIO2. The mode indicator light will remain lit for a few seconds.

PIC SIZE

cycles through the five pictures sizes: Natural, Theater Wide 1,

2, 3, and Full

FAVOR ITE

ENTER

yz x •

FAV yz

CH yz

VOL yz

EXIT

INPUT

MUTE

RECALL

allows access to the favorite channel search function

allows access to on-screen programming menus

sets programming menu information

select or adjust programming menus

cycles through favorite channels

cycles through programmed channels

adjusts the volume level

exits the programming menus

selects the video input source

mutes the sound

displays on-screen information

CH RTN

returns to the last viewed channels

POP CH yz

SPLIT

CH SCAN

FREEZE

SWAP

POP DIRECT CH

SOURCE

selects the POP (picture-out-picture) channel

turns the POP feature on and off

allows access to the programmed channel search functionx

freezes the picture. Press again to restore the picture.

switches the main and POP pictures

allows direct access to POP channels

selects the POP picture source

Note:

The error message “Not Available” will appear if you press a key for a function that is not available.

PROGRAMMING CHANNEL MEMORY

Adding channels to the TV’s memory

When you press Channel y or z, your TV will stop only on the channels stored in the TV’s channel memory.

Follow the steps below and on the next page to program all active channels into the TV’s memory.

Programming channels automatically

Your TV can automatically detect all active channels in your area and store them in its memory. After the channels are stored automatically, you can manually add or erase individual channels.

To program channels automatically:

1. Press MENU, and then press x or • until the SET UP menu

appears.

2. Press y or z until TV/CABLE is highlighted, and then press

ENTER to display the pull-down menu.

3. Press y or z to highlight either TV or CABLE, depending on

which you use. If you use an antenna, highlight TV; if you use cable channels, highlight CABLE.

LANGUAGE CLOCK SET ANT 1 / 2 TV / CABLE CH PROGRAM ADD / ERASE

SELECT::SETENTER

SET UP

CABLE

Note:

To tune the TV to a channel not programmed in the channel memory, you must use the Channel Number buttons on the remote control.

CABLE/SAT

VCR

DVD

AUDIO1

AUDIO2

MODE

PIC SIZE

ACTION

DVD RTN CH RTN

SLOW/DIR

INPUT

POWER

LIGHT SLEEP

123

456

789

+10

100/

ENT

FAV

ENTER

FAV

VOL

EXIT

DVD CLEAR

RECALL

MUTE

SKIP/SEARCH

ENTER

yzx •

Channel yz

4. Press ENTER.

5. Press z to select CH PROGRAM.

LANGUAGE CLOCK SET ANT 1 / 2 ANT1 TV / CABLE CABLE CH PROGRAM ADD / ERASE

MOVE::STARTENTER

SET UP

ENGLISH

00:00

ADD

6. Press ENTER to start channel programming. The TV will automatically cycle through all the TV or Cable channels (depending on which you selected), and store all active channels in the channel memory.

While the TV is cycling through the channels, the message “Programming Now—Please Wait” appears.

7. When channel programming is complete, the message “Completed” appears.

8. Press Channel y or z to view the programmed channels.

Adding and erasing channels manually

After you have programmed the channels automatically, you can manually add or erase specific channels.

To add or erase channels:

1. Select the channel you want to add or erase. If you are adding a channel, you must select the channel using the Channel Number buttons.

2. Press MENU, and then press x or • until the SET UP menu appears.

3. Press y or z to highlight ADD/ERASE, and then press ENTER to display the pull-down menu.

Control touchpad on TV front

MENUVOLUMECHANNELEXITTV/VIDEO

x•zy

LANGUAGE CLOCK SET ANT 1 / 2 TV / CABLE CH PROGRAM ADD / ERASE

SELECT::SETENTER

SET UP

ADD

ERASE

4. Press y or z to select ADD or ERASE, depending on the

function you want to perform.

5. Repeat steps 1–4 for other channels you want to add or erase.

CABLE/SAT

VCR

DVD

AUDIO1

AUDIO2

MODE

PIC SIZE

ACTION

DVD RTN CH RTN

SLOW/DIR

LIGHT SLEEP

123

456

789

+10

100/

FAV

ENTER

FAV

EXIT

DVD CLEAR

INPUT

RECALL

SKIP/SEARCH

POWER

VOL

MUTE

Channel Number

ENT

ENTER

yzx •

Channel yz

+ 28 hidden pages