Toshiba TheaterWide 56HM195 Bedienungsanleitung

SERVICE MANUAL

Projection Television

56HM195

62HM195

72HM195

FILE NO. 020-200523

Published in Japan Sep. 2005 (YC)

TOSHIBA CORPORATION 2005

DOCUMENT CREATED IN JAPAN, Sept., 2005

TABLE OF CONTENTS

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

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

SETTING & ADJUSTING DATA ...................................................................................................................................... 9

LAMP UNIT REPLACEMENT ....................................................................................................................................... 10

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

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

EXPLODED VIEW ........................................................................................................................................................ 17

MECHANICAL DISASSEMBLY .................................................................................................................................... 18

CHASSIS REPLACEMENT PARTS LIST ..................................................................................................................... 19

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

TERMINAL VIEW OF TRANSISTORS ......................................................................................................................... 47

CIRCUIT BLOCK DIAGRAM ........................................................................................................................................ 52

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 by using

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

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. 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 9)

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.

SERVICE MODE

1. ENTERING SERVICE MODE

MUTE

(Service mode display)

3) While pressing the MUTE button,

press MENU button on TV set.

2) Press MUTE button

again and keep pressing.

1) Press MUTE button twice

on Remote Control.

2. DISPLAYING THE ADJUSTMENT MENU

Adjustment mode

Press

Service mode

1) Press MENU button on Remote Control.

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.

Firmware :

Version information of microprocessor

In case of file name : HM195 and Version : 1401 indicates[HM195_1401].

Time : Total brightness hour of the projection lamp. (Unit : H)

Bus line : --"OK" is normal

"SCL-GND"(Red indication) : SCL-GND short circuit

"SDA-GND"(Red indication) : SDA-GND short circuit

"SCL-SDA"(Red indication) : SCL-SDA short circuit

Bus cont : --- "OK" is normal.

NG is abnormal(Red indication), when type name of semiconductor indicates.

Block

UV : TV reception mode

V1 : VIDEO 1 input mode

V2 : VIDEO 2 input mode

V3 : VIDEO 3 input mode

V4 : ColorStream HD-1 IN

V5:ColorStream HD-2 IN

V6:HDMI IN 1

V7:HDMI IN 2

microprocessor into the unit.

DLP :Thermal sensor values information that indicates both of nearby the projection lamp and DMD

7. 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 begin to check.

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

MAIN MPU :

Version information of microprocessor

In case of file name : HM195, Version 1401 for Code Program Version

and (U15) for OSD Version indicates [HM195_1401(U15)]

EEPROM :

Version information of EEPROM : Display 1 byte data.

SUB MPU :

Version information of SUB MPU : Display 1 byte data.

OPTION :

Option information : Display six numbers of 1 byte data.

HDMI ID :

HDMI ID information : Display 4 byte data.

DMD :

Version information of DMD optical engine : Display 1 byte data.

MALIBU :

MALIBU information : Display two numbers of 1 byte data.

MALIBU STATUS :

MALIBU STATUS information : Display four numbers of 1 byte data.

8. STATUS CHECK MODE

1) Press “9” button thrice on Remote Control during display of adjustment menu in the service mode. The status of this

model will begin to check.

2) During Status Check, the following displays are shown.

MAIN :

Main source information :

Display RF position number (1- 135) on the main screen, or Input Source (HDMI1/2, DVI, AUDIO etc.)

MAIN FORMAT :

Display Video and PC format information

MAIN PLL :

Main PLL information : Display 1 byte data at five.

SCREEN SIZE :

Display the screen size as follows.

OTHER STATUS :

Other status information : Display three numbers of 2 byte data.

Theater Wide 1

Theater Wide 2

Theater Wide 3

FULL

NATURAL

– 8 –

LED

Yellow blinks continuously at 3-

second intervals.

Blue blinks continuously at 0.5-

second intervals.

Yellow blinks continuously at 0.5-

second intervals;

Blue is ON (solid).

Yellow and Blue blink continu-

ously at 1-second intervals.

Yellow is OFF;

Blue blinks at 0.2-second inter-

vals 4 times (repeat).

Yellow is OFF;

Blue blinks continuously at 0.5-

second intervals.

Yellow is OFF;

Blue blinks continuously at 1-

second intervals.

Yellow is OFF;

Blue blinks at 0.2-second inter-

vals 3 times (repeat).

Condition

The lamp unit door is not seated

properly.

The lamp is not working properly.

The lamp is not working properly

after the eighth automatic restart

(see item #2).

An abnormal temperature

increase has occurred.

Abnormal operation

(including cooling fan stop).

Abnormal operation of BUS line.

The color wheel has stopped.

Solution

Turn OFF the TV and unplug the power cord.

Review “How to replace the lamp unit” on

pages 10–12 to ensure that the lamp door is

installed securely.

The TV will automatically try to restart itself

eight times (see item #3).

Turn the TV OFF and then ON again. If the

problem persists, replace the lamp unit (see

pages 10–12).

Turn OFF the TV. Check to make sure all

slots and openings in the TV cabinet are not

covered, blocked, or dusty. Turn ON the TV

again. If the problem persists, contact a

Toshiba Authorized Service Center.

Turn OFF the TV and unplug 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.

Turn OFF the TV and unplug the power cord.

Plug the power cord in again and turn ON

the TV.

9. LED indications

The yellow and blue LED lights on the TV (at the bottom cen-

ter of the TV) indicate the TV’s status, as described below:

´ Blue ON (solid) and Yellow OFF = The TV power cord is

plugged in.

´ Yellow ON (solid) and Blue OFF = A recording is in

progress while the TV is OFF.

´ Blue ON (solid) and Yellow ON (solid) = A recording is in

progress while the TV is ON.

Yellow and/or Blue blinking (see table below).

Note: If the TV loses A/C power (e.g., a power outage oc-

curs or the power cord is unplugged), when power is

restored, the yellow LED will blink while the TV is

booting until the remote control is usable. This is

normal and is not a sign of malfunction.

Blue LED

Yellow LED

TV front

SETTING & ADJUSTING DATA

SERVICE MODE

ADJUSTING ITEMS AND DATA IN THE SERVICE MODE:

Table-1

Note:

The image system data of ∗

mark items are different by each image format.

The RF-Signal value is indicated in the table.

Retention the HPOS and VPOS data to EEPROM of Malibu.

Retention the CWDH and CWDL data to EEPROM of DMD.

Item Name of adjustment Preset Data

RCUT R CUT OFF

GCUT G CUTOFF

BCUT B CUT OFF

GDRV G DRIVE

BDRV B DRIVE

RDRV

R DRIVE

∗

BRTC

BRIGHTNESS CENTER

∗

COLC

COLOR CENTER

∗

UVTT

BASE BAND TINT

∗

CNTX

CONTRAST MAX

VPOS V-POSITION

CWDH

COLOR WHEEL DELAY (HIGH)

CWDL

COLOR WHEEL DELAY (LOW)

DMDB DMD BIAS

OPT1 TV SET OPTION 1

00H

80H

FDH

C8H

FEH

80H

00H

74H

03H

74H

CNTCG G CONTRAST CENTER

CNTCR R CONTRAST CENTER

CNTCB B CONTRAST CENTER

64H

HPOS H-POSITION 00H

14H

03H

0FH

05H

14H

04H

Item Name of adjustment Preset Data

PLLW0 PLL WAIT TIME

PLLW1 PLL WAIT TIME

00H

01H

OPT2 TV SET OPTION 2

OPT3 TV SET OPTION 3

PLLW2 PLL WAIT TIME

PLLW3 PLL WAIT TIME

PLLW4 PLL WAIT TIME

PLLW5 PLL WAIT TIME

LAMP UNIT REPLACEMENT

The light source for this TV is a mercury lamp with internal atmospheric

pressure that increases during use. The lamp has a limited service life

that varies depending on user settings. If you use the lamp beyond its

service life:

you may notice a reduction in the colors and/or brightness of the pic-

ture; and



the strength of the quartz glass in the lamp will be reduced and the

lamp may rupture (often making a loud noise when this happens). If

the lamp reputres, the TV will not operate until the lamp unit is replaced.

Note: The lamp unit is designed so broken lamp glass remains se-

curely inside the lamp unit.

CAUTION: Always handle the lamp unit with care.

The lamp unit in this TV was designed for safe replace-

ment by consumers; however, if the lamp unit is subjected to inten-

tional abuse (such as excessive mechanical abuse or handling by

children or pets), the unit may break, exposing edges or pinch points.

When to replace the lamp unit

You should replace the lamp unit:

if the picture darkens and/or colors fade;

if the lamp does not light; or

If you hear a loud noise and the picture goes black, which may indi-

cate a lamp rupture (LED indication #8). See LED indications on

page 6.

Cautions when replacing LAMP UNIT (E998Z; PJ-D95-LMP)

Note: The lamp unit is designed so broken lamp glass remains se-

curely inside the lamp unit.

Note: Be sure wear the gloves before replacing the lamp unit.

Andere Handbücher für TheaterWide 56HM195

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