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42" Plasma Color Television
Model: PLA-4200M
Service Manual
PDP TV SERVICE MANUAL
Contents
1.Safety instruction.................................................2
2.Specification.......................................................4
3.Signal processing and system block diagram..................5
4.Part list ..............................................................7
5.General assembly drawing .....................................10
6.General connection diagram....................................11
7.Failures analysis...................................................15
8.Description of main ICs and components .....................19
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PDP TV SERVICE MANUAL
Notice: This service manual is only read and used by
professionals. The repairman should review the part of
safety precaution before work.
1.Safety instruction
TO PREVENT POSSIBLE DANGER,DAMAGE, AND BODILY HARM, PLEASE CONSIDER
AND OBSERVE ALL CAUTIONS CONTAINED IN THIS PARAGRAPH.
A.Warning
If you don't consider the following warning before maintenance, it could result in death or serious injury.
(1) The PDP module is controlled by voltage about 350V. If you need to handle the module during operation or just
after power-off, you must take proper precautions against electric shock and never touch the drive circuit
portion and metallic part of PDP module.
The capacitors in the drive circuit portion remain temporarily charged even after the power off. After turning
off the power, you must be sure to wait at least one minute before touching the module. If the remainder of
voltage is strong enough, it could result in electric shock.
(2) Do not use any other power supply voltage than the specified voltage in this product specifications. If you use
deviated power voltage from the specifications, it could result in fire hazard or product failure.
(3) Do not operate or install under the deviated surrounding from the environmental specification such as in
moisture or rain; near water-for example, bath tub, laundry tub, kitchen sink; in a wet basement; or near a
swimming pool; and also near fire or heater for example, near or over radiator heat resistor; or where it is
exposed to direct sunlight; or somewhere like that. If you use the PDP module in places above, it could result in
electric shock, fire hazard or product failure.
(4) If any foreign objects (e.g. water, liquid and metallic chip or dust) entered the PDP module, the power supply
voltage to the PDP module must be turned off immediately. Also never push objects of any kind into the PDP
module as they may touch dangerous voltage point or make short circuits that could result in fire hazard or
electric shock.
(5) If smoke, offensive smell or unusual noise should come from the PDP module, the power supply voltage to the
PDP module must be turned off immediately.
Also, when the PDP screen cannot display any picture after the power-on or during operation, the power
supply must be turned off immediately. Never continue to operate the PDP module under these conditions.
6 Do not disconnect or connect the PDP module's connector while the power supply is on, or just after power off.
Because the PDP module is operated by high voltage, and the capacitors in drive circuit remain temporarily
changed even after the power is turned off. If you need to disconnect it, you have to wait at least one minute
after power off.
7 Do not disconnect or connect the power connector by wet hands. The voltage of the product may be strong
enough to cause an electric shock..
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PDP TV SERVICE MANUAL
8 Do not damage the power cable of the PDP module, also do not modify it.
When the power cable or connector is damaged or frayed, do not use it.
When the power connector is covered with dust, please wipe it with a dry cloth before the power on.
Caution
If you don't consider the following cautions, it may result in personal injury or damage to the product.
Do not set the PDP module on an unstable place, vibrating place or inclined place. The PDP module may
fall or drop, and it may cause serious injury to a person, and serious damage to the product.
If you need to remove the PDP module to another place, you must turn off the power supply and detach the
interface cable and power cable from the PDP module, and watch your steps during the work. If the cable
has a damage, it may result in fire hazard or electric shock. Also if the PDP module drop or fall, it may
result in personal injury.
When you draw or insert the PDP's cable, you must turn off the power supply and do it with holding the
connector. If you draw the cable, the electric wire in the cable could be exposed or broken. It may result in
fire hazard or electric shock.
To carry the PDP module, it be done by two workers in order to avoid unexpected accidents.
The PDP module has a glass-plate. If the PDP module is inflicted with excessive stress for example; shock,
vibration, bending and heat-shock, the glass plate could break. It may result in personal injury. And also,
do not press or strike the glass surface.
If the glass plate was broken, do not touch it with bare hand. It may result in a cut injury.
Do not place any object on the glass plate. It may scratch or break the glass plate.
Do not place any object on the PDP module. It may result in personal injury due to its fall or drop.
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PDP TV SERVICE MANUAL
2.Specifications
Type PLA-4200M
System of the broadcasting NTSC-M
System of the video signal PAL/NTSC/SECAM
Number of stored programs 125
Air: CH2 to CH69,
Scope of the channel
Cable: CATV1 to CATV125
Signal intensity 70dB
Input impedance>10k ,
Audio input
Input voltage 0.1-0.5 V(rms)
Speaker output 2*5W
Visual angle (Max) 160
Resolution 852*480
Power supply AC 100V-240V (50Hz/60Hz)
Energy consumption 350W(typ).3W (stand by)
Dimensions (W*H*D) 46.1*29.1*5.2 inch
Size of screen 42 inch
Aspect ration 16:9
Weight 110 lb.
Ambient temperature 0-35
Ambient humidity 20%-70%RH
Ambient air pressure 86-106Kpa
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PDP TV SERVICE MANUAL
3.Signal processing and system block diagram
A. Image signal processing block diagram
U202 U101 U531
J201 Digital RGB R(0,7)
RGBHV AD9883A Y PW166B G(0,7) THC63LVD823 PDP
VGA IN
A/D Convertor UV scale B(0,7) LVDS Panel
U31
SST39VF800A
J4 SAMP
S-VHS IN Flash
U301 U302
J3 Y
V1 IN VPC3230 PW1230
Decoder UV De-interlace AC Card
V2 IN
+5V +9V +12V
YCbCr IN U1
VIDEO OUT
Zilog Z86229 MEMORY
J2 U303
CCD V-Chip BUFFER
TCPN9082DC U3 U4
Cable/air IN 27D(T) MSP 3450G Speaker
TDA8944
TUNER
MTS Process Audio Amp Speaker
A1 IN EXT Audio IN
A2 IN EXT Audio IN
+12V +5V
DC/DC
+3..3V
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PDP TV SERVICE MANUAL
B. PDP DISPLAY SCREEN BLOCK DIAGRAM
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PDP TV SERVICE MANUAL
4.Part list
Part Number Description Qty.
A904008 Polaroid PLA-4200M Plasma Display Panel 1
Included in A904008 Polaroid PLA-4200M Cable L=150mm 1
SPW5.069.166 Polaroid PLA-4200M YPbPr Circuit Board 1
SPW5.969.003 Polaroid PLA-4200M Remote Control Circuit Board 1
A920008 Polaroid PLA-4200M Zinnia PDP Control Circuit Board 1
B135011 8
SPW8.339.008 Polaroid PLA-4200M Main Power Button 1
E143221JF Polaroid PLA-4200M Tapping Screw ST3*8F 2
E143222JH Polaroid PLA-4200M Tapping Screw ST3*8 (black) 6
E143461 Polaroid PLA-4200M Tapping Screw ST4*16 16
E143463 Polaroid PLA-4200M Tapping Screw ST4*16 (black) 6
E144231 Polaroid PLA-4200M Tapping Screw ST3*10 30
E144431 Polaroid PLA-4200M Tapping Screw ST4*10 3
E690220 Polaroid PLA-4200M SEMS Screw M3*8 16
E690221 Polaroid PLA-4200M SEMS Screw M3*8 (black) 6
E690223 Polaroid PLA-4200M SEMS Screw M3*8 (black) 15
E690230 Polaroid PLA-4200M SEMS Screw M3*10 2
E690420 Polaroid PLA-4200M SEMS Screw M4*8 14
E690660 Polaroid PLA-4200M SEMS Screw M6*16 (black) 10
E690670 Polaroid PLA-4200M SEMS Screw M6*20 (black) 4
S070183 Polaroid PLA-4200M Power Switch KDC-A04-1 1
G330170 Polaroid PLA-4200M Remote Control 1
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PDP TV SERVICE MANUAL
4.Part list
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PDP TV SERVICE MANUAL
4.Part list
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PDP TV SERVICE MANUAL
5.General assembly drawing
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PDP TV SERVICE MANUAL
6.General connection diagram
W2 7-31
J5 (LVDS 1/F) LA03
13
1 31 W4
2-13
CN J1 CON8011
(TTL 1/F) Power
1
W5
Main board 9 1-9
J2
X1001 Power
CON8009
1 1
Receiving Unit for W3
CN6 6
Remote control (OSD) J7 1
15 4-6 Plasma Display Panel
W17
SPW.5.969.003 6-15 J6
Connector S42SD-YD
CN1
CN2
Tuner board
Power filter board
5-3
CN6 CN8702
(DV1)
J8
12 1 CN8701 CON8002
Right SWITCH 5-3
Speaker
Left
YPbPr Board Speaker
9-1
3-12
YPbPr Socket 16-1 220V~IN
SPW5.069.166 Power supply socket
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PDP TV SERVICE MANUAL
B. Input Power Voltage Source and Pin Assignment
Connector Name: SA J1(W4)
to The Image Board
Pin no Voltage Source Usage
1 5Vsb Vcc5-SB-PDP
2 GND GND
3 GND-D GND
4 B5d1 NC
5 RELAY PDP-RELAY
6 TH-DET NC
7 FAN-DET NC
8 GND-A GND
9 GND-A GND
10 NC NC
11 V12A NC
12 V5a Vcc5-PDP
13 NC NC
Connector Name: AUDIO J2(W5)
to The Audio Amp Board
Pin no Voltage Source Usage
1 V5A Vcc5-PDP
2 GND-A GND
3 12VCC Vcc12-FAN
4 V9A Vcc9-PDP
5 GND-A GND
6 24Vsp Vcc12-AUD-PDP
7 24Vsp Vcc12-AUD-PDP
8 GNDS GND-AUD
9 GNDS GND-AUD
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PDP TV SERVICE MANUAL
Connector Name: Connector Name:
OSD(W17) SPEAKER(W3)
Pin no Usage Pin no Usage
1 Vcc5 1 SPEAKER-SW
2 KPAD0 2 SPK-OUT1-
3 KPAD1 3 SPK-OUT1+
4 KPAD2 4 GND
5 KPAD3 5 SPK-OUT2-
6 LED-RED 6 SPK-OUT2+
7 LED-GREEN
8 Vcc5-SB
9 GND
10 POWER-SW
11 IR
12 KPAD4
13 KPAD5
14 KPAD6
15 KPAD7
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PDP TV SERVICE MANUAL
7.Failures analysis
Without raster
Judge input voltage input the voltage and
and frequency whether frequency according to the
they are right specification
Judge whether this Press power key to
product is in standby turn on
mode by remote control
Check whether the Check the
current received external signal
signal is right source
Turn off for 2 minutes, then if it is ok, maybe failure
turn on again to check whether results from poor contact
the picture emerges
Open the rear cover then enter Replace power supply
power-on mode to check the switch or filter with
CON8002-220v voltage of PDP poor performance
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PDP TV SERVICE MANUAL
Check the output voltage Check and repair
CON8011 / CON8009 of display screen power
power board board voltage
Check the input voltage J1 Check and transpose the
/ J3 connector of main line of connector
board
Check the supply voltages of Check OR transpose
mainboard:Vcc5-SUB(IC-U U15-1.#IN , D1,CE21,CE26.
15-4#),Vcc3(IC-U8-2#) U8-2#IN, C198, CE33.
Check or transpose
the signal data line
of connector
check and transpose the main
board
check the driver board of PDP
display screen, and the slices
of soft IC etc.
Check the other circuits
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PDP TV SERVICE MANUAL
Display image but without sound
Turn on to check
exchange tuner board
whether there is noise
Read the operating
Check whether the
instruction, and set the
volume is correctly set
volume again
Check J7 waveform Check and exchange
of Speaker's audio speaker
output
Check IC U4 whether
Check and exchange IC U4
input or output signal
is ok.
Check IC U3 Whether Check and exchange IC
input-60#/output-27# U3
28# signal is OK
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PDP TV SERVICE MANUAL
Check whether there is Check and exchange the connector
audio output in connector which is not good.
CN1/CN2- 40#pin
Check whether there is
audio output in tuner board
(U5-14#)
Exchange the tuner board
or the tuner.
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PDP TV SERVICE MANUAL
8.Description of main ICs and components
(1) M52790SP/FP
AV SWITCH with I2C BUS CONTROL
DESCRIPTION
The M52790 is AV switch semiconductor integrated
circuit with I2C bus control .
This IC contains 2-channels of 4-input audio switches and
2-channels of 4-input video switches. Each channel can be
controled independently .
The video switches contain amplifiers can be controled a
gain of
output 0dB or 6dB .
FEATURES