Toshiba 46HM84 - 46" Rear Projection TV Bedienungsanleitung

SERVICE MANUAL

Projection Television

46HM84

52HM84

62HM84

FILE NO. 020-200401

REVISED.2

Published in Japan, Jan. 2005 (YC)

TABLE OF CONTENTS

CHAPTER 1 GENERAL ADJUSTMENTS

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

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

CHAPTER 2 SPECIFIC INFORMATIONS

SETTING & ADJUSTING DATA ...................................................................................................................................... 7

LOCATION OF CONTROLS ........................................................................................................................................... 8

PROGRAMMING CHANNEL MEMORY ....................................................................................................................... 10

LAMP UNIT REPLACEMENT ....................................................................................................................................... 12

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

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

EXPLODED VIEW ........................................................................................................................................................ 19

MECHANICAL DISASSEMBLY .................................................................................................................................... 20

CHASSIS REPLACEMENT PARTS LIST ..................................................................................................................... 21

PC BOARDS TOP AND BOTTOM VIEW ..................................................................................................................... 29

TERMINAL VIEW OF TRANSISTORS ......................................................................................................................... 41

CIRCUIT BLOCK DIAGRAM ........................................................................................................................................ 44

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

APPENDIX:

CIRCUIT DIAGRAM

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 byusing

replacement components rated for higher voltage, wattage, etc.Replacement parts which have these special safety charac-

teristics 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.

PRODUCT SAFETY NOTICE

CHAPTER 1 GENERAL ADJUSTMENTS

SAFETY INSTRUCTIONS

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 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.

SAFETY PRECAUTION

3. SELECTINGTHE 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)

4. ADJUSTINGTHE 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.

SERVICE MODE

1. ENTERING SERVICE MODE

MUTE

(Service mode display)

3) While pressing the MUTE button,

press MENU button onTV set.

2) Press MUTE button

again and keep pressing.

1) Press MUTE button twice

on Remote Control.

2. DISPLAYINGTHE ADJUSTMENT MENU

Adjustment mode

Press

Service mode

Item

Data

1) Press MENU button on TV.

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 is executed properly.

2) During diagnosis, the following displays are shown.

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"

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

TIME

TV : ******

LAMP :

****

Thermo1 : +51

Thermo2 : +50

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 indications

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).

MENUVOLUMECHANNELEXITTV/VIDEO POWER

Green indicator

Red indicator

Control touchpad on TV front

LED Indication

Red and Green turn off.

Red light 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 blink 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 12-14 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 12-14).

• 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 (SCL, 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.

SETTING & ADJUSTING DATA

CHAPTER 2 SPECIFIC INFORMATIONS

SERVICE MODE

ADJUSTING ITEMS AND DATA INTHE SERVICE MODE:

Item Name of adjustment Preset Data

Table-1

RCUT R CUT OFF

GCUT G CUTOFF

BCUT B CUT OFF

RDRV R DRIVE

GDRV G DRIVE

BDRV B DRIVE

BRTC BRIGHT CENTER

SCNT

SUB CONTRAST FOR TV

COLC COLOR CENTER

UVTT BASE BAND TINT

CNTX SUB CONTRAST MAX

HPOS H-POSITION (PAL/DFS)

VPOS

V-POSITION DC SHIFT (PAL/DFS)

CWDH

COLOR WHEEL DELAY (HIGH)

CWDL

COLOR WHEEL DELAY (LOW)

DMDB DMD BIAS

OPT0 TV SET OPTION 1

Note:

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

The NTSC value is indicated in the table.

60H

64H

48H

53H

5FH

76H

20H

D0H

40H

7FH

00H

FAH

03H

00H

A0H

40H

14H

03H

0FH

05H

14H

04H

23H

4AH

63H

6FH

73H

20H

91H

24H

73H

01H

Item Name of adjustment Preset Data

OPT1 TV SET OPTION 2

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

VOLUME SCART OPTION HIGH

SCTL

VOLUME SCART OPTION LOW

LOCATION OF CONTROLS

Front

Remote sensor

(Behind the screen)

Video 3

Video/audio inputs

TV/VIDEO

EXIT zyx •

ANT-2

ANT-1

POWER

Push to open.

ANT OUT

MENUVOLUMECHANNELEXITTV/VIDEO POWER

AUDIO

* Green ON = Touchpad key being pressed;

Red ON = Power ON.

See page 60 for additional LED indications.

Channel zy

Volume x• Green and Red

LED indicators*

Side

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

Front

Back

deo/aud o pu s

HDMI IN

ANT-2

IN ANT-1

VIDEO 1/2

ColorStream

HD1/HD2

Audio OUT

Push to open.

ANT OUT

AUDIO

Variable

Audio OUT

Back

Remote Control

123

456

789

ENT

100

POWER

RECALL

CHRTN

FAV

TV / VIDEO

+10

PIC SIZE

EXIT

INFO

STOP

POP DIRECT CH MUTE SLEEP

TV/VCR PAUSE

FFREW

SKIP/SEARCH

SPLIT

SWAP POP CH

LIGHT

REC

CH SCAN

FREEZE SOURCE

PLAY

CBL/SAT

VCR

DVD

VOLCH

FAVORITE

ENTER

DVDMENU

Note:

The error message “Not Available” will appear

if you press a key for a function that is not

available.

POWER

turns the TV on and off

RECALL

displays screen information

SLEEP

sets the TV to turn off at a specific time

TV/VIDEO

selects video input source

MUTE

mutes the sound

Device Switch

switches between TV, CBL/SAT, VCR and DVD

Set to “TV” to control the TV.

CH (channel) yz

cycles through programmed channels

Channel Numbers

(0-9, 100) allow direct access to channels

VOL (volume) yz

adjusts the volume level

CH RTN

returns to the memorized channel

allows access to on-screen programming menus

ENTER

activates the function settings in the menu

yzx•

select or adjust programming menus

POP CH yz

selects the POP (picture-out-picture) channel

FAV yz

cycles through favorite channels

FAVORITE

allows access to the favorite channel search function

PIC SIZE

cycles through the five picture sizes: Natural, Theater Wide

1, 2, 3, and Full

EXIT

exits programming menus

SPLIT

turns the POP feature on and off

SOURCE

selects the POP picture source

FREEZE

freezes the picture. Press again to restore the picture.

SWAP

switches the main and POP pictures

POP DIRECT CH

allows direct access to POP channels

CH SCAN

allows access to the programmed channel search function

LIGHT

illuminates the keypad for five seconds

PROGRAMMING CHANNEL MEMORY

Adding channels to the TV’s memory

When you press Channel yor 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 (see page 25).

To program channels automatically:

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

appears.

2. Press yor zuntil the TV/CABLE is highlighted, and then press

ENTER to display the pull-down menu.

3. Press yor zto highlight either TV or CABLE, depending on

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

cable, highlight CABLE.

LANGUAGE

SET UP

CLOCK SET

CABLE

ANT 1 / 2

TV / CABLE

CH PROGRAM

ADD / ERASE

SELECT::SETENTER

4. Press ENTER.

5. Press zto select CH PROGRAM.

LANGUAGE

SET UP

CLOCK SET 00:00

ENGLISH

ANT 1 / 2 ANT1

TV / CABLE CABLE

ADD

CH PROGRAM

ADD / ERASE

MOVE::STARTENTER

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 yor zto view the programmed channels.

123

456

789

ENT

100

POWER

RECALL

CHRTN

FAV

TV/ VIDEO

+10

PIC SIZE

EXIT

INFO

STOP

POP DIRECT CH MUTE SLEEP

TV/VCR PAUSE

FFREW

SKIP / SEARCH

SPLIT

SWAP POP CH

LIGHT

REC

CH SCAN

FREEZE SOURCE

PLAY

CBL/SAT

VCR

DVD

VOLCH

FAVORITE

ENTER

DVDMENU

yzx •

Channel yz

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.

ENTER

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