Toshiba 42HP83 User manual

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
FILE NO. 010-200314
SERVICE MANUAL
Plasma Color Television
42HP83

– 2 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
TABLE OF CONTENTS
SERVICE SAFETY PRECAUTIONS....................................................................................................................................3
IMPORTANT INFORMATION...............................................................................................................................................5
CLEANING...........................................................................................................................................................................6
LOCATION OF CONTROLS ................................................................................................................................................7
LAYOUT OF MAJOR BOARDS............................................................................................................................................ 9
MECHANICAL DISASSEMBLY..........................................................................................................................................10
EXPLODED VIEW .............................................................................................................................................................16
PACKING DISASSEMBLY..................................................................................................................................................17
TROUBLESHOOTING .......................................................................................................................................................18
CHASSIS AND CABINET REPLACEMENT PARTS LIST .................................................................................................20
PC BOARDS ......................................................................................................................................................................29
SPECIFICATIONS.......................................................................................................................................................... END
APPENDIX:
SCHEMATIC DIAGRAM

– 3 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
SERVICE SAFETY PRECAUTIONS
• The caution items shown here describe major safety issues and should always be observed.
• The meanings of the various indications are as follows.
WARNING
CAUTION
Indicates a hypothetical situation in which service personnel and nearby third parties, or even
end users due to a product defect after the service operation is completed, could possibly be in
danger of injury or even death in the event of operational error.
Indicates a hypothetical situation in which service personnel and nearby third parties, or even
end users after the service operation is completed, could possibly be in danger of injury, or
where there could be physical damage in the event of operational error.
* Physical damage means major damage to a home, furnishings and other possessions.
Examples of marks
SHOCK HAZARD
PROHIBIT DISASSEM-
BLING
UNPULUG
The " indicates caution (including danger and warning).
The actual meaning of this caution is indicated inside the " or nearby illustrations or text.
The example shown to the left indicates the danger of "electrical shock".
The indicates a forbidden action.
The actual meaning of this caution is indicated inside the or nearby illustrations or text.
The example shown to the left indicates that disassembly is forbidden.
The -indicates a forced action (an action that must be performed).
The actual meaning of this forced action is indicated by -or nearby illustrations or text.
The example shown to the left indicates that the power plug must be disconnected.

– 4 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
WARNING
KEEP CHILDREN
AWAY
UNPULUG
SHOCK HAZARD
USE SPECIFIED
PARTS
CAUTION FOR
WIRING
CAUTION FOR
ASSEMBLING /
WIRING
CHECK INSULATION
RESISTANCE
PROHIBIT
REMODELING
• Always advise users to keep children away.
There is danger of injury to children from tools, disassembled products, etc.
• Always disconnect the power plug before starting work whenever power is not required.
Failure to disconnect the power plug before starting work can result in electrical shock.
• Depending on the model, use an insulation transformer or wear 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 pos-
sible if the chassis is contacted with the power on.
• Always use the replacement parts specified for the particular model when making repairs.
The parts used in products have the necessary safety characteristics such as inflammability,
voltage resistance, etc.; therefore, use only replacement parts that have these same character-
istics.
Use only the specified parts when the mark is included in a circuit diagram or parts list.
• Parts mounting and routing of the wiring should be the same as that used originally.
For safety purposes, insulating materials such as tubing or tape is sometimes used and printed
circuit boards are sometimes mounted floating.
Also make sure that wiring is routed and clamped to avoid parts that generate heat and which
use high voltage. Always follow the original scheme.
• After a repair has been completed, reassemble all disassembled parts, and route and recon-
nect the wiring, in accordance with the original scheme.
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.
• After completing the work, disconnect the power plug from the outlet, remove the antenna, turn
on the power switch. Then, use a 500V insulation resistance meter to check the insulation
resistance of the antenna terminal, other metallic parts and between the prongs of the power
plug to make sure that the insulation resistance is 1M 1or more.
The set will require inspection and repair if the insulation resistance is below this value.
• Never remodel the product in any way.
Remodeling can result in improper operation, malfunction, or electrical leakage and flame,
which may be hazardous

– 5 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
IMPORTANT INFORMATION
About Permanent after-image
• Due to the characteristics of a plasma screen, if the same image is displayed for an extended period
of time, permanent after-image (image retention) in part of the screen may result.As a result of accu-
mulative effect, brightness deterioration results.
To prevent permanent after-image, it is recommended not to display the same image for an extended
period of time, or in 4:3 mode.If retention occurs, display a moving picture like a video movie.This may
help to reduce minor permanent after-image. But it cannot be removed entirely once it has occurred.If
the same static picture is displayed frequently, it is recommended to decrease “Brightness,” or to
adjust the Long life setting.
Note on operations in 4:3 mode
• In 4:3 mode, because of the sharp contrast between the displayed image area and non-displayed image area (frame),
permanent after-image is likely to result.
Therefore, we recommend adjusting the TV settings as follows:
1.Reduce “Contrast” and “Brightness” of the picture.The more you reduce, the more effect is effective.
2. Adjust the brightness of the side panels.The more you turn the brightness high, the more effect is effective.
However, after adjusting the above settings, permanent after-image may not be removed entirely; only the onset of after-
image is delayed. Display yourTV in Super Live or Wide mode as much as possible.
Some parts of the screen do not light up
• The plasma display panel is manufactured using an extremely high level of precision technology, however sometimes
some parts of the screen may be missing picture elements or have luminous spots.This is not a sign of a malfunction.
About infrared rays
• The plasma screen of this unit emits infrared rays in normal operation, and may influence some infrared-operated equip-
ment by a use state although the measures of infrared ray (filter, etc.) are taken. Locate such equipment carefully to
prevent rays from the plasma screen causing any problems.
About Interference
• Plasma display may cause interference in image, sound, etc. of other electronic equipment that is easy to receive electro-
magnetic waves (i.e.AM radios and video equipment) under certain installed condition. In particular, it may affect elec-
tronic equipment beyond the residential unit where a plasma display TV is used.
About Static electricity
• If you touch the surface of the screen panel, you may feel a slight electric shock.This is harmless.
About using under the low temperature places
• If you use theTV in the room of 0°C or less, the picture brightness may vary until the plasma monitor warms up.This is not
a sign of a malfunction.
About disposal
• Dispose the TV depending on the related local rules or laws.
After-image appear

– 6 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
CLEANING
Remove the power plug before cleaning.
Do not use solvents such as benzine or thinner to clean theTV.
– These solvents may distort the cabinet or damage its finish.
– If rubber or vinyl products remain in contact with theTV for a long
time, a stain may result.
When the cabinet becomes dirty, clean it with a soft, dry cloth.
When the cabinet is very dirty.
– Use a damp cloth to wipe the cabinet clean.
– Finish with a dry cloth.
When cleaning the surface of the plasma display:
– Wipe the panel surface gently with a supplied soft, dry cloth.
When dust has collected on the power plug connectors, remove the
plug from the outlet and clean off the dust.
This dust may cause a fire due to reduced insulation on the plug.
Clean here

– 7 –
LOCATION OF CONTROLS
L/MONO L/MONO
AUDIO
S-VIDEO
VIDEO 1 VIDEO 2
COLOR
STREAM
HD-2
COLOR
STREAM
HD-1
VIDEO
VIDEO
R
L
L
RL
AUDIO
R
P B
P R
Y
ANT-1 ANT-2 OUT
VAR
AUDIO
IN IN IN
OUT
OUT
TheaterLink
DVI/HDCP AUDIO IN
DVI/HDCP IN
ANT(75 )
P B
P R
Y
L
AUDIO
R
AUDIO
R R
AC IN
S-VIDEO VIDEO R
VIDEO-3 IN
HEADPHONE
AUDIO
L/MONO
TV/VIDEO MENU VOLUME CHANNEL POWER
Back DVI/HDCP IN
TV front
DVI/HDCP
AUDIO IN
Volume
Menu
Channel
Menu
MENU
ANT-1 IN
Remote sensor
POWER
VIDEO-3
INPUT
TV/VIDEO
Headphones
jack
Power indicator
Push up Push up
ANT-2 IN
ANT OUT
Wall outlet
120V AC
50/60Hz Power Cord
VIDEO 1/2
ColorStream
HD-1
ColorStream
HD-2
VIDEO/
AUDIO OUT
Variable
AUDIO OUT
TheaterLink
OUT
TheaterLink
(IR pass
through)
Left pocket panel Right pocket panel

– 8 –
Remote Control
POWER turns the TV on and off.
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) allow direct access to channels.
MODE cycles through the six device modes:TV, CABLE/SAT, VCR, 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.
FAVORITE allows access to the favorite channel search function
.
MENU allows access to on-screen programming menus.
ENTER sets programming menu information.
select or adjust programming menus.
FAV cycles through favorite channels.
CH cycles through programmed channels.
VOL adjusts the volume level.
EXIT exits the programming menus.
INPUT selects the video input source.
MUTE mutes the sound.
RECALL displays on-screen information.
CH RTN returns to the last viewed channels.
POP CH selects the POP (picture-out-picture) channel.
SPLIT turns the POP feature on and off.
CH SCAN allows access to the programmed channel search function
.
FREEZE freezes the POP picture.
SWAP switches the main and POP pictures.
POP DIRECT CH allows direct access to POP channels
.
SOURCE 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.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 9 –
LAYOUT OF MAJOR BOARDS
U003
LOWB1 Board
U004
LOWB2 Board
U005
A-OUT Board
U006C
OSD/MICON
U800
MAIN POWER Module
U006E
G-HYPER Module
E001
SCALER BLOCK
U001C
IR-PASSTHROUGH Board
U001A
SIGNAL Board
(Control Board)
U801
SUB POWER Module
U006A
FRONT/AV Board E003
DVI Board
U006B
KEY Board
U002
BACK AV Board
U001B
TN/IMA Board

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 10 –
MECHANICAL DISASSEMBLY
A
B
C
■Removing the rear cover
*Note: Be sure to lay down the main body (by placing its screen downward) for disassembling.
•Remove 25 screws (A).
•Remove 16 screws (B).
•Remove 6 screws (C).

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 11 –
■Removing the speakers
Remove 4 screws.
Remove 2 screws.
Remove 4 screws.
Remove 4 screws.
Remove 2 screws.
Remove 4 screws.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 12 –
■Removing the back terminal panel
•Remove 9 screws encircled in red.
•Remove 4 screws enclosed in red squares.
■Removing the BACK/AV board
•Remove 2 screws.
BACK/AV Board TIF-MA Board

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 13 –
■Removing the A-OUT board and SUB POWER UNIT
Remove 4 screws.Remove 6 screws.
SUB POWER UNIT A-OUTboard

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 14 –
■Removing the chassis block
•Remove 6 screws.
Chassis Block

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 15 –
U
FRONT/AV Board
KEY
Board
V
■Removing the FRONT/AV board and KEY board

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 16 –
( : 3 X12)
A515
E001
E003
A536
A532
( : 4 X12)
( : 4 X12)
A210
A207
A213
A211
A406
LABEL, SERIAL NUMBER, TTX3
A532
( : 4 X12)
( : 3 X12)
A407
A531
A401
BACK COVER
( : 3 X10)
SCALER BLOCK94TBGSUF010M
MODULE, 03DVI PD0647C
WIRE HOLDER, NYLON66 D6.8
PIECE, CONTROL BOX, KEYREAR
A208
PIECE, CONTROL BOX , KEY FRONT ASSY, 42HP83
PIECE, CONTROL BOX, KEYCOVER
PIECE, CONTROL BOX, AV COVER
PIECE, CONTROL BOX, AV REAR
A212
PIECE, CONTROL BOX, AV FRONT ASSY 42HP83
A528
A205
DECORATIVE, GLASS SIDE
A532
( : 4 X12)
A201
BEZEL, 42HP83
EXPLODED VIEW

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 17 –
PACKING DISASSEMBLY
Y101
Y109
A705
A703
A701B
A701A
A705
A702
A702
A702
A702 K903

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 18 –
TROUBLESHOOTING
OK
NG
OK OK
NG NG
OK
NG
OK
NG
OK
NO SOUND (All source)
(A-OUT)
P601 #2 (Lch )or #4(Rch) OK? Disconnection of SPK,
or the defect of SPK
Change the SPK.
(A-OUT)
P610A #1 (Lch) or #2 (Rch)
OK?
Made the mode of SPK-ON
on a menu screen.
Or check Q615.
(A-OUT)
Q610 #5 (MUTE) is Low (0V)?
(MA)
H002 #18 (Lch), #16 (Rch) OK?
Check the MUTE_AUDIO
line.
Check the QS102 and
peripherals.
(MA)
P102B #8 (Lch), #9 (Rch) OK? Check the QD05 and
peripherals.
(MA)
P102B #4 (Lch), #5(Rch) OK? Check the QV01 and
peripherals.
Check the Mute-Circuit
or replace the H002.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 19 –
NO POWER ON
Relay sounds?
Relay is turned OFF
immediatly after the
Relay is ON.
Make a check by
disconnecting the processed
cable of CN805, 806,807.
Make a check by
disconnecting the processed
cable of P809.
Make a check by
disconnecting the processed
cable of P808.
Check 5V-1.
Check the #9 of P807 by
disconnecting M807.
POWER_TV is HIGH
after connecting the M807
again?
POWER is operated
normally.
Check other signal circuits.
PDP Panel Module is abnormal.
Check the Panel and
peripherals.
Sound Output Circuit and
peripherals are abnormal.
Check the Sound Output and
peripherals.
LOWB2 Unit side or Load side is abnormal.
Check Q870 and peripherals: Check the overvoltage and
overcurrent of 3.3VS.
Check Q880 and peripherals: Check the overcurrent of 9VS
Connect the processed cable of P808, and disconnect the
processed cable of P808A to make a check again. If OK, check
the Scaler Unit side.
LOWB1 Unit side or Load side is abnormal.
Check Q835 and peripherals: Check the overvoltage and
overcurrent of 5V-2
Check Q829 and peripherals: Check the overvoltage and
overcurrent of 9V
Check Q820A and peripherals: Check the overcurrent of 3.3VA
Check the Load side of 12 V-line and 32 V-line
Check other SIGNAL Circuit side
Note: When PTF-422 is broken down, replace the whole POWER Unit. (Never repair the inside of PTF-422.)
Replace PFT-422.
Check the Microcontroller,
Light Receiving Unit and
peripherals.
Check Q819, D819 and
peripherals of LOWB1.
Replace PFT-422.
NO
YES
OK
OK
OK
NG
NG
NG
NO
NO
NO
YES
YES

SPECIFIC INFORMATIONS
– 20 –
Location Parts No. Description
No. Location Parts No. Description No.
CAPACITORS
C102 24793221 ELECTROLYTIC, 10V 220UF M
C103 24109102 CERAMIC CHIP, 50V B 1000PF K
C104 24797479 ELECTROLYTIC, 50V 4.7UF M
C105 24763221 ELECTROLYTIC, 16V 220UF M
C108 24793221 ELECTROLYTIC, 10V 220UF M
C122 24092730 CERAMIC CHIP, 16V B 0.1UF K
C124 24109471 CERAMIC CHIP, 50V B 470PF K
C126 24109471 CERAMIC CHIP, 50V B 470PF K
C127 24763101 ELECTROLYTIC, 16V 100UF M
C131 24793221 ELECTROLYTIC, 10V 220UF M
C132 24763101 ELECTROLYTIC, 16V 100UF M
C133 24109102 CERAMIC CHIP, 50V B 1000PF K
C161 24109472 CERAMIC CHIP, 50V B 4700PF K
C162 24109472 CERAMIC CHIP, 50V B 4700PF K
C172 24669339 ELECTROLYTIC, 50V 3.3UF M
C522 24100104 CERAMIC CHIP, 25V F 0.1UF Z
C523 24100104 CERAMIC CHIP, 25V F 0.1UF Z
C524 24100104 CERAMIC CHIP, 25V F 0.1UF Z
C605 24109102 CERAMIC CHIP, 50V B 1000PF K
C606 24109102 CERAMIC CHIP, 50V B 1000PF K
C612 24761102 ELECTROLYTIC, 6.3V 1000UF M
C621 24109103 CERAMIC CHIP, 50V B 0.01UF K
C622 24109103 CERAMIC CHIP, 50V B 0.01UF K
C631 24092463 CERAMIC CHIP, 16V B 0.22UF K
C632 24092463 CERAMIC CHIP, 16V B 0.22UF K
C640 24794102 ELECTROLYTIC, 16V 1000UF M
C641 24794470 ELECTROLYTIC, 16V 47UF M
C642 24794470 ELECTROLYTIC, 16V 47UF M
C645 24815103 CERAMIC CHIP, 50V B 10000PF K
C653 24797010 ELECTROLYTIC, 50V 1UF M
C659 24591102 PLASTIC FILM, 50V 1000PF J
C661 24109102 CERAMIC CHIP, 50V B 1000PF K
C662 24109102 CERAMIC CHIP, 50V B 1000PF K
C663 24206108 ELECTROLYTIC, 50V 0.1UF M 7L 3A
C665 24797339 ELECTROLYTIO, 50V 3.3UF M
C666 24797339 ELECTROLYTIO, 50V 3.3UF M
C667 24797478 ELECTROLYTIC, 50V 0.47UF M
C668 24797478 ELECTROLYTIC, 50V 0.47UF M
C669 24105221 CERAMIC CHIP, 50V CH 220PF J
C671 24669479 ELECTROLYTIC, 50V 4.7UF M 3A
C672 24797229 ELECTROLYTIC, 50V 2.2UF M
C673 24797229 ELECTROLYTIC, 50V 2.2UF M
C674 24669479 ELECTROLYTIC, 50V 4.7UF M 3A
C675 24666470 ELECTORLYTIC, 16V 47UF M 3A
C676 24797010 ELECTROLYTIC, 50V 1UF M
C677 24105821 CERAMIC CHIP, 25V CH 820PF J
C678 24105821 CERAMIC CHIP, 25V CH 820PF J
C679 24105221 CERAMIC CHIP, 50V CH 220PF J
C680 24668102 ELECTROLYTIC, 35V 1000UF M 3A
C681 24668102 ELECTROLYTIC, 35V 1000UF M 3A
C682 24668102 ELECTROLYTIC, 35V 1000UF M 3A
C684 24285104 CERAMIC CHIP, 50V B 0.1UF K
C685 24285104 CERAMIC CHIP, 50V B 0.1UF K
C690 24815103 CERAMIC CHIP, 50V B 10000PF K
C811 24539474 PLASTIC FILM, 50V 0.47UF J
C816 24797010 ELECTROLYTIC, 50V 1UF M
C819 24539684 PLASTIC FILM, 50V 0.68UF J
C820 24539334 PLASTIC FILM, 50V 0.33UF J
C821 24669339 ELECTROLYTIC, 50V 3.3UF M
C822 24666470 ELECTORLYTIC, 16V 47UF M 3A
C823 24669100 ELECTROLYTIC, 50V 10UF M 3A
C832 24617006 ELECTROLYTIC, 25V 820UF M
C834 24666102 ELECTROLYTIC, 16V 1000UF M 3A
C835 24668102 ELECTROLYTIC, 35V 1000UF M 3A
C837 24617006 ELECTROLYTIC, 25V 820UF M
C838 24617006 ELECTROLYTIC, 25V 820UF M
C839 24539104 PLASTIC FILM, 50V 0.1UF J
C841 24617043 ELECTROLYTIC04CH 35V 1000UF M
C844 24539104 PLASTIC FILM, 50V 0.1UF J
C849 24765470 ELECTROLYTICCE04G 35V 47UF M
C850 24590103 PLASTIC FILM, 50V 0.01UF J
C865 24617006 ELECTROLYTIC, 25V 820UF M
C870 24617043 ELECTROLYTIC04CH 35V 1000UF M
C871 24539104 PLASTIC FILM, 50V 0.1UF J
C872 24214221 CERAMIC DISC, 500V B 220PF K
C874 24539104 PLASTIC FILM, 50V 0.1UF J
C875 24617006 ELECTROLYTIC, 25V 820UF M
WARNING:BEFORE SERVICING THIS CHASSIS, READTHE “X-RAY RADIATION PRECAUTION”, “SAFETY PRE-
CAUTION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL.
CAUTION:The international hazard symbols “ ” in the schematic diagram and the parts list designate com-ponents
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 PRODUCT SAFETY NOTICE. Do not degrade the
safety of the receiver through improper servicing.
NOTICE:
• The part number must be used when ordering parts, in order to assist in processing, be sure to include the Model
number and Description.
• The PC board assembly with  mark is no longer available after the end of the production.
CHASSIS AND CABINET REPLACEMENT PARTS LIST
Model : 42HP83
Capacitors ............. CD : Ceramic Disk PF : Plastic Film EL : Electrolytic
Resistors ............... CF : Carbon Film CC : Carbon Composition MF : Metal Film
OMF : Oxide Metal Film VR : Variable Resistor FR : Fusible Resistor
(All CD and PF capacitors are ±5%, 50V and all resistors, ±5%, 1/6W unless otherwise noted.)