Panasonic TX-PR42C10 User manual

© Panasonic Corporation 2009.
Unauthorized copying and distribution is a violation
of law.
ORDER NO. PCZ0904060CE
Plasma Television
Model No. TX-PR42C10
GPH12DE Chassis

2
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions -----------------------------------------------3
1.1. General Guidelines ----------------------------------------3
1.2. Touch-Current Check--------------------------------------3
2Warning--------------------------------------------------------------4
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices ----------4
2.2. About lead free solder (PbF) ----------------------------5
3 Service Navigation------------------------------------------------6
3.1. Service Hint--------------------------------------------------6
3.2. Applicable signals------------------------------------------7
4 Specifications ------------------------------------------------------8
5 Service Mode-------------------------------------------------------9
5.1. How to enter into Service Mode------------------------9
5.2. Service tool mode---------------------------------------- 11
5.3. Hotel mode-------------------------------------------------12
6 Troubleshooting Guide----------------------------------------13
6.1. Check of the IIC bus lines------------------------------13
6.2. Power LED Blinking timing chart---------------------14
6.3. No Power---------------------------------------------------15
6.4. No Picture--------------------------------------------------16
6.5. Local screen failure--------------------------------------17
7 Service Fixture & Tools ---------------------------------------18
7.1. SC jig--------------------------------------------------------18
8 Disassembly and Assembly Instructions---------------19
8.1. Remove the Rear cover --------------------------------19
8.2. Remove the P-Board------------------------------------19
8.3. Remove the Side terminal cover and Rear
terminal cover---------------------------------------------19
8.4. Remove the Tuner unit ---------------------------------19
8.5. Remove the A-Board------------------------------------20
8.6. Remove the Speakers ----------------------------------20
8.7. Remove the Control button unit ----------------------20
8.8. Remove the GK-Board ---------------------------------20
8.9. Remove the SU-Board----------------------------------21
8.10. Remove the SD-Board----------------------------------21
8.11. Remove the SC-Board----------------------------------21
8.12. Remove the SS2-Board --------------------------------22
8.13. Remove the SS-Board----------------------------------22
8.14. Remove the Hanger metals and the Stand
brackets-----------------------------------------------------22
8.15. Remove the C1-Board----------------------------------22
8.16. Remove the C2-Board----------------------------------23
8.17. Remove the Plasma panel section from the
Cabinet assy (glass)-------------------------------------23
8.18. Remove the S-Board------------------------------------24
8.19. Remove the Front glass--------------------------------24
8.20. Remove the K-Board------------------------------------24
8.21. Replace the plasma panel -----------------------------25
9 Measurements and Adjustments --------------------------26
9.1. Adjustment Procedure ----------------------------------26
9.2. Adjustment-------------------------------------------------29
10 Block Diagram ---------------------------------------------------33
10.1. Main Block Diagram-------------------------------------33
10.2. Block (1/3) Diagram -------------------------------------34
10.3. Block (2/3) Diagram -------------------------------------35
10.4. Block (3/3) Diagram -------------------------------------36
11 Wiring Connection Diagram---------------------------------37
11.1. Caution statement.---------------------------------------37
11.2. Wiring (1) -------------------------------------------------- 37
11.3. Wiring (2) -------------------------------------------------- 38
11.4. Wiring (3) -------------------------------------------------- 39
12 Schematic Diagram -------------------------------------------- 41
12.1. Schematic Diagram Note------------------------------ 41
12.2. P-Board (1/4) Schematic Diagram ------------------ 42
12.3. P-Board (2/4) Schematic Diagram ------------------ 43
12.4. P-Board (3/4) Schematic Diagram ------------------ 44
12.5. P-Board (4/4) Schematic Diagram ------------------ 45
12.6. GK, K and S-Board Schematic Diagram----------- 46
12.7. A-Board (1/21) Schematic Diagram----------------- 47
12.8. A-Board (2/21) Schematic Diagram----------------- 48
12.9. A-Board (3/21) Schematic Diagram----------------- 49
12.10. A-Board (4/21) Schematic Diagram----------------- 50
12.11. A-Board (5/21) Schematic Diagram----------------- 51
12.12. A-Board (6/21) Schematic Diagram----------------- 52
12.13. A-Board (7/21) Schematic Diagram----------------- 53
12.14. A-Board (8/21) Schematic Diagram----------------- 54
12.15. A-Board (9/21) Schematic Diagram----------------- 55
12.16. A-Board (10/21) Schematic Diagram--------------- 56
12.17. A-Board (11/21) Schematic Diagram --------------- 57
12.18. A-Board (12/21) Schematic Diagram--------------- 58
12.19. A-Board (13/21) Schematic Diagram--------------- 59
12.20. A-Board (14/21) Schematic Diagram--------------- 60
12.21. A-Board (15/21) Schematic Diagram--------------- 61
12.22. A-Board (16/21) Schematic Diagram--------------- 62
12.23. A-Board (17/21) Schematic Diagram--------------- 63
12.24. A-Board (18/21) Schematic Diagram--------------- 64
12.25. A-Board (19/21) Schematic Diagram--------------- 65
12.26. A-Board (20/21) Schematic Diagram--------------- 66
12.27. A-Board (21/21) Schematic Diagram--------------- 67
12.28. C1-Board (1/2) Schematic Diagram ---------------- 68
12.29. C1-Board (2/2) Schematic Diagram ---------------- 69
12.30. C2-Board (1/2) Schematic Diagram ---------------- 70
12.31. C2-Board (2/2) Schematic Diagram ---------------- 71
12.32. SC-Board (1/3) Schematic Diagram ---------------- 72
12.33. SC-Board (2/3) Schematic Diagram ---------------- 73
12.34. SC-Board (3/3) Schematic Diagram ---------------- 74
12.35. SS-Board (1/2) Schematic Diagram ---------------- 75
12.36. SS-Board (2/2) and SS2-Board Schematic
Diagram---------------------------------------------------- 76
13 Printed Circuit Board------------------------------------------ 77
13.1. P-Board ---------------------------------------------------- 77
13.2. GK, K, S and SS2-Board ------------------------------ 80
13.3. A-Board ---------------------------------------------------- 81
13.4. C1-Board--------------------------------------------------- 84
13.5. C2-Board--------------------------------------------------- 85
13.6. SC-Board -------------------------------------------------- 86
13.7. SS-Board -------------------------------------------------- 89
14 Exploded View and Replacement Parts List----------- 91
14.1. Exploded View and Mechanical Replacement
Parts List--------------------------------------------------- 91
14.2. Electrical Replacement Parts List ------------------- 98

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1 Safety Precautions
1.1. General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
4. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
5. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
6. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.2. Touch-Current Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground
such as a water pipe, as shown in Figure 1.
3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reserve the AC plug in the AC outlet and repeat each of the above measure.
6. The potential at any point (TOUGH CURRENT) expressed as voltage U1and U2, does not exceed the following values:
For a. c.: U1= 35 V (peak) and U2= 0.35 V (peak);
For d. c.: U1= 1.0 V,
Note:
The limit value of U2= 0.35 V (peak) for a. c. and U1= 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0
mA d. c.
The limit value U1= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the customer.
Figure 1

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2Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically
Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alumi-
num foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara-
ble conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise ham less motion such as the brush-
ing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient
to damage an ES device).

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2.2. About lead free solder (PbF)
Note: Lead is listed as (Pb) in the periodic table of elements.
In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).
That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d
suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.
Caution
• Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please
use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).
• Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb sol-
der. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
• After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the
opposite side. (see figure below)
Suggested Pb free solder
There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. How-
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

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3 Service Navigation
3.1. Service Hint
Board Name Function Board Name Function
P Power Supply C1 Data Driver (Lower Right)
A DC-DC Converter, Tuner
Speaker out, AV Terminal, AV Switch
Digital Signal Processor, SYSTEM MPU, HDMI Switch
Peaks lite 2p
Format Converter, Plasma AI, Sub-Field Processor
C2 Data Driver (Lower Left)
SC Scan Drive
SS Sustain Drive
SS2 Sustain out (Lower)
SU Scan out (Upper)
Non-serviceable.
SU-Board should be exchanged for service.
K Remote receiver, Power LED SD Scan out (Lower)
Non-serviceable.
SD-Board should be exchanged for service.
S Power Switch
GK Key Switch

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3.2. Applicable signals
COMPONENT (Y, PB, PR), HDMI
* Mark: Applicable input signal for Component (Y, PB, PR) and HDMI
PC (from HDMI terminal)
Applicable input signal for PC is basically compatible to HDMI standard timing.
Note
• Signals other than above may not be displayed properly.
• The above signals are reformatted for optimal viewing on your display.
• PC signal is magnified or compressed for display, so that it may not be possible to show fine detail with sufficient clarity.
Signal name COMPONENT HDMI
525 (480) / 60i * *
525 (480) / 60p * *
625 (576) / 50i * *
625 (576) / 50p * *
750 (720) / 60p * *
750 (720) / 50p * *
1,125 (1,080) / 60i * *
1,125 (1,080) / 50i * *
1,125 (1,080) / 60p *
1,125 (1,080) / 50p *
1,125 (1,080) / 24p *
Signal name Horizontal frequency (kHz) Vertical frequency (Hz)
640 ×480 @60 Hz 31.47 60.00
750 (720) / 60p 45.00 60.00
1,125 (1,080) / 60p 67.50 60.00

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4 Specifications
Power Source AC 220-240 V, 50 / 60 Hz
Power Consumption 285 W
Power Consumption in Standby mode 0.7 W
Display panel
Aspect Ratio 16:9
Visible screen size 106 cm (diagonal) 922 mm (W) ×518 mm (H)
Number of pixels 786,432 (1,024 (W) ×768 (H)) [3,072 ×768 dots]
Sound Speaker 160 mm ×40 mm ×2 pcs, 6 Ω
Audio Output 20 W ( 10 W + 10 W ), 10 % THD
Headphones M3 (3.5 mm) stereo mini Jack ×1
Receiving Systems / Band name PAL B, G, H, I, SECAM B, G, SECAM L, L’
VHF E2 - E12 VHF H1 - H2 (ITALY)
VHF A - H (ITALY) UHF E21 - E69
CATV (S01 - S05) CATV S1 - S10 (M1 - M10)
CATV S11 - S20 (U1 - U10) CATV S21 - S41 (Hyperband)
PAL D, K, SECAM D, K
VHF R1 - R2 VHF R3 - R5
VHF R6 - R12 UHF E21 - E69
PAL 525/60 Playback of NTSC tape from some PAL Video recorders (VCR)
M.NTSC Playback from M. NTSC Video recorders (VCR)
NTSC (AV input only) Playback from NTSC Video recorders (VCR)
OTV signals may not be received in some areas.
Aerial - Rear VHF / UHF
Operating Conditions Temperature: 0 °C - 35 °C
Humidity: 20 % - 80 % RH (non-condensing)
Connection Terminals
AV1 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, Q-Link)
AV2 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, S-Video in, Q-Link)
AV3 VIDEO RCA PIN Type ×1 1.0 V [p-p] (75 Ω)
S-VIDEO Mini DIN 4-pin Y:1.0 V [p-p] (75 Ω) C:0.286 V [p-p] (75 Ω)
AUDIO L - R RCA PIN Type ×2 0.5 V [rms]
COMPONENT
VIDEO Y 1.0 V [p-p] (including synchronization)
PB, PR± 0.35 V [p-p]
AUDIO L - R RCA PIN Type ×2 0.5 V [rms]
Others
HDMI1 / 2 TYPE A Connectors HDMI™ (Version 1.3a with x.v.Colour™)
OThis TV supports [HDAVI Control 4] function.
Card slot SD Card slot ×1
Output
AUDIO L - R RCA PIN Type ×2 0.5 V [rms] (high impedance)
Dimensions (W ×H ×D) 1,029 mm ×709 mm ×327 mm (With Pedestal)
1,029 mm ×661 mm ×100 mm (TV only)
Mass 28.0 kg Net (With Pedestal)
26.0 kg Net (TV only)
Note
• Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
• This equipment complies with the EMC standards listed below.
EN55013, EN61000-3-2, EN61000-3-3, EN55020, EN55022, EN55024.
• Pedestal: ST-42RF1WG / ST-50RF1WG (For safety approval)

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5 Service Mode
5.1. How to enter into Service Mode
While pressing [VOLUME ( - )] button of the main unit, press [0] button of the remote control three times within 2 seconds.
5.1.1. Key command
[1] button...Main items Selection in forward direction
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[RED] button...All Sub items Selection in forward direction
[GREEN] button...All Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )

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5.1.2. Contents of adjustment mode
• Value is shown as a hexadecimal number.
• Preset value differs depending on models.
• After entering the adjustment mode, take note of the value in each item before starting adjustment.
5.1.3. How to exit
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

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5.2. Service tool mode
5.2.1. How to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
5.2.2. Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication will be cleared by [Self-check indication and forced to factory shipment setting].
5.2.3. POWER ON Time, On/Off
Note : To display Time, On/Off menu, highlight position, then press MUTE for 3sec.
Time : Cumulative power on time, indicated hour : minute by decimal
On/Off : Number of On/Off switching by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.
5.2.4. Exit
1. Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the main unit.

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5.3. Hotel mode
1. Purpose
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu
In order to display the Hotel mode setup menu, please
enter the following command (within 2 second).
[TV] : Vol. [Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.
3. To exit the Hotel mode setup menu
Disconnect AC power cord from wall outlet.
4. Explain the Hotel mode setup menu
item Function
Hotel Mode Select hotel mode ON/OFF
Initial INPUT Select input signal modes.
Set the input, when each time power is switched
on.
Selection :
Off/RF/AV1/AV2/AV2S/AV3/AV3S/COMPONENT/
HDMI1/HDMI2
• Off: give priority to a last memory. However,
Euro model is compulsorily set to TV.
• AVnS/AVnC: only Euro model selectable
• PC: selectable with VGA option
Initial POS Select programme number.
Selection :
Off/0 to 99
• Off: give priority to a last memory
Initial VOL level Adjust the volume when each time power is
switched on.
Selection/Range :
Off/0 to 63
• Off: give priority to a last memory
Maximum VOL
level Adjust maximum volume. Range :
0 to 63
Button lock Select local key conditions.
Selection :
Off/SETUP/MENU/ALL
• Off: altogether valid
• SETUP: only F-key is invalid
(Tuning guide(menu) can not be selected.)
• MENU: only F-key is invalid
(only Volume/Mute can be selected.)
• ALL: altogether invalid.
Remote lock Select remote control key conditions.
Selection :
Off/SETUP/MENU
• Off: altogether valid
• SETUP: only Setup menu is invalid
• MENU: Picture/Sound/Setup menu are invalid

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6 Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
6.1. Check of the IIC bus lines
6.1.1. How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote con-
trol for more than 3 seconds.
6.1.2. Screen display
6.1.3. Check Point
Confirm the following parts if NG was displayed.
6.1.4. Exit
Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the main unit.

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6.2. Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.

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6.3. No Power
First check point
There are following 2 states of No Power indication by power LED.
1. No lit
2. Red is lit then turns red blinking a few seconds later. (See 6.2.)

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6.4. No Picture

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6.5. Local screen failure
Plasma display may have local area failure on the screen. Fig-1 is the possible defect P.C.B. for each local area.
Fig-1

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7 Service Fixture & Tools
7.1. SC jig
Purpose:
To find the failure board (SC or SU/SD) when the power LED is blinking 7 times.
SC jig:
Jumper connector to connect to SC50 connector on SC board
Part number:
TZSC09187
How to use:
Caution: Remove SC jig from SC board after inspection.
1. Remove all connector between SC board and SU/SD board to isolate SC board from both SU and SD board electrically.
Note: The board will be damaged if all connector is not removed (for example; remove connector only for SU board and stay
connecting with SD board. The board will be damaged.)
2. Connect SC jig to connector SC50 at left bottom side of SC board
3. Turn of the TV/Display Unit and confirm the power LED blinking.
LED blinking: Possible cause of failure is in SC board
No LED blinking (Lighting or no lighting): Possible cause of failure is in SU or SD board
4. After inspection, turn off the TV/Display Unit and wait a few minutes to discharge.
5. Remove SC jig from SC board.
Remark: This SC jig can be used for all 2009 Plasma TV and Plasma Display.

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8 Disassembly and Assembly Instructions
8.1. Remove the Rear cover
1. See Service Hint (Section 3)
8.2. Remove the P-Board
Caution:
To remove P.C.B. wait 1 minute after power was off for dis-
charge from electrolysis capacitors.
1. Unlock the cable clampers to free the cable
2. Disconnect the connectors (P2, P6, P7, P9, P11, P25,
P34 and P35).
3. Remove the screws (×9 ) and remove the P-Board.
8.3. Remove the Side terminal
cover and Rear terminal cover
1. Remove the claw (×1 ).
2. Remove the Side terminal cover.
3. Remove the screws (×4 , ×3 ).
4. Remove the Rear terminal cover.
8.4. Remove the Tuner unit
1. Unlock the cable clampers to free the cable.
2. Disconnect the connectors (A1, A7, A11, A12 and A25).
3. Disconnect the flexible cables (A20, A31 and A32).
4. Remove the screws (×2 , ×1 ) and remove the
Tuner unit.

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8.5. Remove the A-Board
1. Remove the Tuner unit. (See section 8.4.)
2. Remove the screws (×4 ) and remove the A-Board.
8.6. Remove the Speakers
1. Unlock the cable clampers to free the cable.
2. Disconnect the relay connector.
3. Remove the screws (×2 ) and remove the Speaker R.
4. Disconnect the connector (A12). (See section 8.4.)
5. Remove the screws (×2 ) and remove the Speaker L.
8.7. Remove the Control button unit
1. Disconnect the connector (C14).
2. Remove the screws (×1 , ×1 ).
3. Remove the Control button unit.
8.8. Remove the GK-Board
1. Remove the Control button unit. (See section 8.7.)
2. Remove the screws (×2 ).
3. Remove the GK-Board MTG. metal.
4. Remove the claw (×3 ).
5. Disconnect the connector (GK1).
6. Remove the GK-Board from Control button.