Toshiba 62HM15A - 62" Rear Projection TV User manual

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SERVICE MANUAL
Projection Television
62HM15A
FILE NO. 023-200528
SUPPLEMENT
Published in Japan, Oct. 2005 (YC)
62HM15A is the same as 62HM95 except for the parts list on back of this sheet.
Use this service manual together with the original service manual of 62HM95 (File
No. 020-200510 Revised.2).
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TOSHIBA CORPORATION 2005 DOCUMENT CREATED IN JAPAN, Oct., 2005
ServiceManual62HM95isattached.

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SEMICONDUCTORS
Q894 23085869 IC, OPE AMP, TA75358PG(5)
MISCELLANEOUS
M601B 23103840 FERRITE CORE, TFE1013
M811A 23103778 FERRITE CORE, TFE1008
M811B 23103778 FERRITE CORE, TFE1008
M906A 23103778 FERRITE CORE, TFE1008
MB22C 23103840 FERRITE CORE, TFE1013
MB91A 23103839 FERRITE CORE, TFE1012
MC01A 23103840 FERRITE CORE, TFE1013
MJ22 23389360 FFC, P0.5-50P-L80(GOLD)
MJ22A 23103327 CORE, FERRITE W33X6.5X12 TFE1023
MJ60 23389360 FFC, P0.5-50P-L80(GOLD)
MJ60A 23103327 CORE, FERRITE W33X6.5X12 TFE1023
MV01A 23103840 FERRITE CORE, TFE1013
P801A 23103840 FERRITE CORE, TFE1013
PJ22A 23757180 CONNECTOR, FH12-50S-0.5SV(55)
PJ60A 23757180 CONNECTOR, FH12-50S-0.5SV(55)
ACCESSORIES
A701 23015318 CARTON, CARTON 62HM15A
Y101 23566840 OWNERS MANUAL, ENGLISH
CABINET PARTS
A184 23469392 INSULATOR, 05_LENS_GASKET
A201 23533365 COVER, BEZEL PURCHASE ASSY
A222 23533959 COVER, PEDESTAL ASY 62HM15A
AA01 23429390 CABINET, STAND MODEL# ST6214
K601 23405562 MIRROR, 62E5M3 MIRROR62E5M3
Location Parts No. Description
No.
CHASSIS AND CABINET REPLACEMENT PARTS LIST

SERVICE MANUAL
Projection Television
62HM95
FILE NO. 020-200510
REVISION 4
DOCUMENT CREATED IN JAPAN, Oct., 2005
TOSHIBA CORPORATION 2005

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TABLE OF CONTENTS
SAFETY INSTRUCTIONS .............................................................................................................................................. 3
SERVICE MODE ............................................................................................................................................................ 4
SETTING & ADJUSTING DATA...................................................................................................................................... 9
LAMP UNIT REPLACEMENT....................................................................................................................................... 10
PARTS REPLACEMENT IN LIGHT ENGINE...............................................................................................................
13
LIGHT ENGINE REPLACEMANT.................................................................................................................................
15
EXPLODED VIEW........................................................................................................................................................ 17
MECHANICAL DISASSEMBLY.................................................................................................................................... 18
CHASSIS REPLACEMENT PARTS LIST ..................................................................................................................... 19
PC BOARDS TOP AND BOTTOM VIEW ..................................................................................................................... 28
TERMINAL VIEW OF TRANSISTORS ......................................................................................................................... 48
CIRCUIT BLOCK DIAGRAM ........................................................................................................................................ 53
APPENDIX:
CIRCUIT DIAGRAM

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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 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

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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
S
(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
Press
Service mode
Item
Data
S
1) Press MENU button on Remote Control.

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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.
1 Firmware :
Version information of microprocessor
In case of file name : HM95 and Version : 1401 indicates[HM95_1401].
2 Time : Total brightness hour of the projection lamp.(Unit : H)
3
4
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
5
Bus cont : --- "OK" is normal.
NG is abnormal(Red indication).
When type name of semiconductor indicates.
6
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
1
2
3
4
5
6
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

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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.
1MAIN MPU :
Version information of microprocessor
In case of file name : HM95, Version 1401 for Code Program Version
and (U15) for OSD Version indicates [HM95_1401(U15)]
2EEPROM :
Version information of EEPROM : Display 1 byte data.
3SUB MPU :
Version information of SUB MPU : Display 1 byte data.
4OPTION :
Option information : Display six numbers of 1 byte data.
5HDMI ID :
HDMI ID information : Display 4 byte data.
6DMD :
1
2
3
4
5
6
Version information of DMD optical engine : Display 1 byte data.

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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.
1MAIN :
Main source information :
Display RF position number (1- 135) on the main screen, or Input Source (ANT1/2, CABLE, TV etc.)
2MAIN FORMAT :
Display Video and PC format information
3MAIN PLL :
Main PLL information : Display 1 byte data at five.
4SCREEN SIZE :
Display the screen size as follows.
5OTHER STATUS :
Other status information : Display three numbers of 2 byte data.
Theater Wide 1
Theater Wide 2
Theater Wide 3
FULL
NATURAL
1
2
4
5
3