Toshiba 42WP36P User manual

Oct., 2003
FILE NO. 010-200308
SERVICE MANUAL
PLASMA COLOUR TV
42WP36P

– 2 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
TABLE OF CONTENTS
SERVICE SAFETY PRECAUTIONS .................................................................................................................................... 3
IMPORTANT INFORMATION ............................................................................................................................................... 5
CLEANING ........................................................................................................................................................................... 6
LAYOUT OF MAJOR BOARDS ............................................................................................................................................ 7
MECHANICAL DISASSEMBLY ............................................................................................................................................ 8
PACKING DISASSEMBLY .................................................................................................................................................. 14
WIRING CONNECTION DIAGRAM ................................................................................................................................... 15
LOCATION OF CONTROLS .............................................................................................................................................. 19
PROGRAMMING CHANNEL MEMORY ............................................................................................................................ 22
TROUBLESHOOTING ....................................................................................................................................................... 24
CHASSIS AND CABINET REPLACEMENT PARTS LIST ................................................................................................. 32
PC BOARDS BOTTOM VIEW ............................................................................................................................................ 51
SPECIFICATIONS .......................................................................................................................................................... END
APPENDIX:
CIRCUIT 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 aindicates a forced action (an action that must be performed).
The actual meaning of this forced action is indicated by aor 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 Ωor 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 your TV 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 the TV 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 the TV.
–These solvents may distort the cabinet or damage its finish.
–If rubber or vinyl products remain in contact with the TV 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

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 7 –
LAYOUT OF MAJOR BOARDS
LOWB-1 Board
LOWB-2 Board
Z-SUS BoardY-SUS Board
A-OUT Board
M2/TEXT Board
POWER Module
G-HYPER ModuleRGB PRO Board
FRONT/AV Board
POWER SW Board
SIGNAL Board
(Control Board)
KEY Board
(X Board)
BACK AV Board
PC INPUT Board
TIF-MA Board

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 8 –
MECHANICAL DISASSEMBLY
A
B
C
RRemoving 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
–9 –
RRemoving the speakers
Remove 4 screws.
Remove 2 screws.
Remove 4 screws.
Remove 4 screws.
Remove 2 screws.
Remove 4 screws.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–10 –
BACK/AV Board TIF-MA Board PC INPUT Board
RRemoving the back terminal panel
•Remove 9 screws encircled in red.
•Remove 4 screws enclosed in red squares.
RRemoving the terminal cover
•Remove 3 screws.
RRemoving the BACK/AV board
•Remove 2 screws.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–11 –
Remove 4 screws.
RRemoving the A-OUT board

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–12 –
Chassis Block
RRemoving the chassis block
•Remove 16 screws.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–13 –
RRemoving the front chassis block
•Remove 4 screws.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–14 –
PACKING DISASSEMBLY
Y170
K902
Y101
A703
A710A
Y109
A701B
Power cord

WIRING CONNECTION DIAGRAM
– 15 – – 16 –
∗In case where it is indistinct or hard to read, please refer to the attached Circuit Diagram (A1 size).

–17 – – 18 –
THIS PAGE IS
INTENTIONALLY LEFT
BLANK.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
– 19 –
LOCATION OF CONTROLS
TV front
(6)
RL/MONO
AUDIOVIDEOS-VIDEO
MENU P
TV front view
Right pocket panel
Remote sensor
EXT6 IN Headphones jack
(3.5 mm, stereo)
Power switch
ON-timer
indicator
(green) Power indicator of the
monitor (red)
Input source
selection
MENU
Volume –+
Menu
Programme position
Menu
Left side TV control panel
Push up Push up to let
pocket panel
comes down.
Push up to let
pocket panel
comes down.

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–20 –
TV back
(AUDIO/VIDEO)
(3)
S-VIDEO
(2)
(S-VIDEO)
(3)
Y
COMPONENT
VIDEO INPUT
R
(1)(4) (5)
VIDEO
(FIXED/VARIABLE)(MONITOR)
WOOFER OUT
(Variable)
R
L
AUDIO P
R /C R
P B /C B
Y
COMPONENT
VIDEO INPUT
P R /C R
P B /C B
AUDIO
L/MONO
AC IN
RGB/PC
AUDIO
Aerial input
EXT4 IN/OUT
(Scart 4)
RGB/PC IN
WOOFER OUT
EXT5 IN/OUT
(Scart 5)
EXT3 IN
(S-video/V ideo/
Audio input)
EXT1 IN
(Component video/
Composite video/Audio
input)
EXT2 IN
(Component
video/Composite
video/Audio
input)
MONIT OR OUT
(Audio/Video output)
AUDIO OUT
(Fixed/Variable) Audio input
Back view
EXT3 IN/OUT
(Scart 3)
* The exact power
code will vary
according to the
country.
Power cord*
Wall outlet
110-240V AC
50/60Hz

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–21 –
Remote Control
DVD
MENU
P
P
21 3
54 6
87 9
VCR
TV
DVD
0
OK
CALL
MENU EXIT
CALL
Initial/index function for Teletext
Teletext on/off
Toreturn to the previous programme
Picture mode selection
MENU
DVD MENU
•Menu
•Volume –+
OK
Stereo/bilingual selection
Device switch
TV : To control TV
VCR : To control VCR
DVD : To control DVD
Power on/Standby
(For Toshiba TV/VCR/DVD)
Number buttons (0-9)
•Input source selection
(EXT1 - EXT6, RGB/PC)
•To access sub-pages when in
Teletext
Picture size selection
EXIT
•Menu
•Programme position
•Teletext
Teletext control buttons
(Four coloured buttons)
Bass boost on/off
External woofer on/off
Sound mute
When in VCR or DVD mode:
(Only for Toshiba VCR/DVD
player exept some models)
to P AUSE
to EJECT
to SKIP-REWIND
to SKIP-FORWARD
to PLAY
to STOP
to REWIND
to FAST FORWARD
When in TV (Teletext) mode:
To r eveal concealed text
To hold a wanted page
To enlar ge teletext display size
/To select a page whilst
viewing a normal picture

GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
–22 –
System Selection, Auto Tuning
Before using Auto tuning, it is important that you select the
required system i.e. B/G for Continental Europe, D/K for
Eastern Europe, I for the U.K., L1 and L2 for France. Gen-
erally speaking, however, the correct colour system is al-
ready set when you execute Quick Set up the first time you
turn on the TV.
Should you also wish to tune to alternative systems this
must be done manually, after using Auto tuning.
1Press the MENU button, then press the or button
repeatedly to display the SET UP menu.
2Press the or button to highlight Auto tuning.
3Press the OK button to display the Auto tuning menu.
System will be highlighted.
Press the or button to select the required system.
i.e. B/G, I, D/K, L1 and L2.
4Press the OK button to start the automatic search.
The search will begin for all available stations.
Bullet will move along the line as the search
progresses.
DO NOT PRESS ANY BUTTONS WHILST THE
AUTOMATIC SEARCH IS IN PROGRESS. If you
make a mistake, simply repeat steps 4 to start again
from the beginning.
5When the automatic search is complete, the TV will
automatically return to programme position 1.
6Press the P8or P9button to view the programmed
positions.
1Press the MENU button, then press the or button
repeatedly to display the SET UP menu.
2Press the or button to highlight Manual tuning.
3Press the OK button to display the Manual tuning
menu.
4Press the or button to highlight the programme
position you want to arrange.
5Press the OK button to display the breakdown menu.
Press the or button to select an item, then press
the or to adjust the item as shown below.
A. Programme position selection
B. System selection
C. Colour system
A : Auto (which will automatically sense the system
transmitted).
P : PAL
S : SECAM
N4 : NTSC 4.43
N3 : NTSC 3.58
Note: When using an external source, such as a
VCR, if there is little or no colour, improvements
may sometimes be achieved by trying a different
colour mode. If you select Auto as described be-
low, the TV will automatically display the best col-
our system.
Due to the complicated map of TV stations we are unable to pre-tune all programme positions. The following simple steps
will take you through the process, enabling you to allocate any TV station to any programme position. Auto tuning searches
similar systems, e.g.B/G, I, D/K, L1 and L2, and then displays all the available stations. All unassigned programme positions
will be skipped. To allocate a position for your VCR, use the Manual tuning method as described in Owner's Manual.
Your Toshiba TV may be tuned manually as an alternative to Auto tuning.
DO NOT PRESS ANY OTHER BUTTONS WHILST THE SET IS TUNING.
PROGRAMMING CHANNEL MEMORY
Manual Tuning
MENU BackStore Watch TVEXIT
Manual tuning
Programme
B/G A 69 098
A
B
C
D
E
F
G
H