Panasonic Viera TH-50PF10UK User manual

© 2007 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
Order Number MTNC070939CE
B34 Canada: D10
High Definition Plasma Display
Model No. TH-50PF10UK
GPF10D Chassis
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
2 Warning -------------------------------------------------------------- 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 ----------------------------------------------------- 9
5 Operating Instructions-----------------------------------------10
6 Service Mode -----------------------------------------------------12
6.1. CAT (Computer Aided Test) mode -------------------12
6.2. IIC mode structure (following items value is
sample data) -----------------------------------------------15
7 Troubleshooting Guide ----------------------------------------16
7.1. Self Check--------------------------------------------------16
7.2. No Power ---------------------------------------------------18
7.3. No Picture --------------------------------------------------18
7.4. Local screen failure --------------------------------------19
8 Disassembly and Assembly Instructions ---------------20
8.1. Removal of Rear Cover ---------------------------------20
8.2. Removal of HA-Board -----------------------------------20
8.3. Removal of HDMI-Board--------------------------------20
8.4. Removal of DS-Board -----------------------------------20
8.5. Removal of HX-Board -----------------------------------21
8.6. Removal of PB-Board----------------------------------- 21
8.7. Removal of DN-Board ---------------------------------- 21
8.8. Removal of D-Board------------------------------------- 22
8.9. Removal of P-Board------------------------------------- 22
8.10. Removal of SU-Board and the SD-Board---------- 22
8.11. Removal of SC-Board----------------------------------- 23
8.12. Removal of SS-Board ---------------------------------- 23
8.13. Removal of H3-Board (L, R)--------------------------- 24
8.14. Removal of Fan------------------------------------------- 24
8.15. Removal of C1, C2, C3, C4, C5 and the C6-
Board-------------------------------------------------------- 25
8.16. Removal of S1-Board ----------------------------------- 26
8.17. Removal of Cabinet and Front Glass --------------- 27
8.18. Removal of V1-Board and the V2-Board----------- 28
8.19. Removal of Plasma Panel ----------------------------- 28
9 Measurements and Adjustments -------------------------- 32
9.1. Adjustment Procedure ---------------------------------- 32
9.2. Adjustment------------------------------------------------- 35
10 Block Diagram --------------------------------------------------- 41
10.1. Main Block Diagram ------------------------------------- 41
10.2. P-Board Block Diagram -------------------------------- 42
10.3. PB, V1 and V2-Board Block Diagram--------------- 43
10.4. HA and HX-Board Block Diagram ------------------- 44
10.5. HDMI-Board (1 of 2) Block Diagram ---------------- 45
10.6. HDMI-Board (2 of 2) Block Diagram ---------------- 46

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10.7. DS-Board (1 of 2) and H3-Board Block
Diagram----------------------------------------------------- 47
10.8. DS-Board (2 of 2) Block Diagram -------------------- 48
10.9. DN-Board (1 of 2) Block Diagram -------------------- 49
10.10. DN-Board (2 of 2) Block Diagram -------------------- 50
10.11. D-Board (1 of 2) Block Diagram ---------------------- 51
10.12. D-Board (2 of 2) Block Diagram ---------------------- 52
10.13. C1, C2, C5 and C6-Board Block Diagram --------- 53
10.14. C2, C3, C4 and C5-Board Block Diagram --------- 54
10.15. SC-Board Block Diagram ------------------------------ 55
10.16. SU and SD-Board Block Diagram ------------------- 56
10.17. SS and S1-Board Block Diagram -------------------- 57
11 Wiring Connection Diagram--------------------------------- 59
11.1. Wiring (1) --------------------------------------------------- 59
11.2. Wiring (2) --------------------------------------------------- 60
12 Schematic Diagram--------------------------------------------- 61
12.1. Schematic Diagram Notes ----------------------------- 61
12.2. P-Board (1 of 2) Schematic Diagram --------------- 62
12.3. P-Board (2 of 2) Schematic Diagram --------------- 63
12.4. PB, V1 and V2-Board Schematic Diagram -------- 64
12.5. HA-Board Schematic Diagram------------------------ 65
12.6. HX-Board Schematic Diagram------------------------ 66
12.7. HDMI-Board (1 of 4) Schematic Diagram---------- 67
12.8. HDMI-Board (2 of 4) Schematic Diagram---------- 68
12.9. HDMI-Board (3 of 4) Schematic Diagram---------- 69
12.10. HDMI-Board (4 of 4) Schematic Diagram ---------- 70
12.11. DS-Board (1 of 3) and H3-Board Schematic
Diagram----------------------------------------------------- 71
12.12. DS-Board (2 of 3) Schematic Diagram ------------- 72
12.13. DS-Board (3 of 3) Schematic Diagram ------------- 73
12.14. DN-Board (1 of 9) Schematic Diagram ------------- 74
12.15. DN-Board (2 of 9) Schematic Diagram ------------- 75
12.16. DN-Board (3 of 9) Schematic Diagram ------------- 76
12.17. DN-Board (4 of 9) Schematic Diagram ------------- 77
12.18. DN-Board (5 of 9) Schematic Diagram ------------- 78
12.19. DN-Board (6 of 9) Schematic Diagram ------------- 79
12.20. DN-Board (7 of 9) Schematic Diagram ------------- 80
12.21. DN-Board (8 of 9) Schematic Diagram ------------- 81
12.22. DN-Board (9 of 9) Schematic Diagram ------------- 82
12.23. D-Board (1 of 8) Schematic Diagram --------------- 83
12.24. D-Board (2 of 8) Schematic Diagram --------------- 84
12.25. D-Board (3 of 8) Schematic Diagram --------------- 85
12.26. D-Board (4 of 8) Schematic Diagram --------------- 86
12.27. D-Board (5 of 8) Schematic Diagram --------------- 87
12.28. D-Board (6 of 8) Schematic Diagram --------------- 88
12.29. D-Board (7 of 8) Schematic Diagram --------------- 89
12.30. D-Board (8 of 8) Schematic Diagram --------------- 90
12.31. C1-Board (1 of 2) Schematic Diagram-------------- 91
12.32. C1-Board (2 of 2) Schematic Diagram-------------- 92
12.33. C2-Board (1 of 2) Schematic Diagram-------------- 93
12.34. C2-Board (2 of 2) Schematic Diagram-------------- 94
12.35. C3-Board (1 of 2) Schematic Diagram-------------- 95
12.36. C3-Board (2 of 2) Schematic Diagram-------------- 96
12.37. C4-Board (1 of 2) Schematic Diagram-------------- 97
12.38. C4-Board (2 of 2) Schematic Diagram-------------- 98
12.39. C5-Board (1 of 2) Schematic Diagram-------------- 99
12.40. C5-Board (2 of 2) Schematic Diagram------------ 100
12.41. C6-Board (1 of 2) Schematic Diagram------------ 101
12.42. C6-Board (2 of 2) Schematic Diagram------------ 102
12.43. SC-Board (1 of 2) Schematic Diagram ----------- 103
12.44. SC-Board (2 of 2) Schematic Diagram ----------- 104
12.45. SU-Board (1 of 3) Schematic Diagram------------ 105
12.46. SU-Board (2 of 3) Schematic Diagram------------ 106
12.47. SU-Board (3 of 3) Schematic Diagram------------ 107
12.48. SD-Board (1 of 3) Schematic Diagram------------ 108
12.49. SD-Board (2 of 3) Schematic Diagram------------ 109
12.50. SD-Board (3 of 3) Schematic Diagram------------ 110
12.51. SS-Board and S1-Board Schematic Diagram --- 111
13 Printed Circuit Board----------------------------------------- 112
13.1. P-Board --------------------------------------------------- 112
13.2. PB-Board ------------------------------------------------- 115
13.3. HA-Board ------------------------------------------------- 116
13.4. HX-Board ------------------------------------------------- 117
13.5. HDMI-Board---------------------------------------------- 118
13.6. H3, V1 and S1-Board---------------------------------- 119
13.7. DS-Board ------------------------------------------------- 120
13.8. DN-Board ------------------------------------------------- 122
13.9. D-Board --------------------------------------------------- 124
13.10. C1-Board-------------------------------------------------- 126
13.11. C2-Board-------------------------------------------------- 127
13.12. C3-Board-------------------------------------------------- 128
13.13. C4-Board-------------------------------------------------- 129
13.14. C5-Board-------------------------------------------------- 130
13.15. C6-Board-------------------------------------------------- 131
13.16. SC-Board ------------------------------------------------- 132
13.17. SU-Board ------------------------------------------------- 135
13.18. SD-Board ------------------------------------------------- 136
13.19. SS-Board ------------------------------------------------- 137
14 Exploded View and Replacement Parts List----------141
14.1. Electrical Replacement Parts List ------------------ 141

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1 Safety Precautions
1.1. General Guidelines
1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.
2. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the
wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.
3. When conducting repairs and servicing, do not twist the Faston connectors but plug them straight in or unplug them straight
out.
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.
1.1.1. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the
two prongs on the plug.
2. Measure the resistance value, with an ohmmeter,
between the jumpered AC plug and each exposed metal-
lic cabinet part on the equipment such as screwheads,
connectors, control shafts, etc. When the exposed metal-
lic part has a return path to the chassis, the reading
should be between 1Mohm and 5.2Mohm.
When the exposed metal does not have a return path to
the chassis, the reading must be .
Figure 1
1.1.2. Leakage Current Hot Check (See
Figure 1 .)
1. Plug the AC cord directly into the AC outlet. Do not use
an isolation transformer for this check.
2. Connect a 1.5kohm, 10 watts resistor, in parallel with a
0.15µF capacitors, 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 an AC voltmeter, with 1000 ohms/volt or more sensi-
tivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the volt-
age at each point.
5. Reverse the AC plug in the AC outlet and repeat each of
the above measurements.
6. The potential at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 milliamp. In case a mea-
surement is outside of the limits specified, there is a pos-
sibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the cus-
tomer.

4
TH-50PF10UK
2 Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-
tive (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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TH-50PF10UK
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.

6
TH-50PF10UK
3 Service Navigation
3.1. Service Hint
Note:
Extension cable kit for Slot Board is supplied as service fixtures and tools.
(Part No. TZSC07040)
Board Name Function Board Name Function
D Digital Signal Processor,
Format Converter,
Plasma AI Processor
C4 Data Drive (Lower Left)
C5 Data Drive (Lower Center)
C6 Data Drive (Lower Right)
DS Slot Interface (Audio / Video / Sync Input
Switch),
Sync Processor, Audio Processor,
Speaker Out Amplifier,
DC-DC Converter
H3 Speaker Terminal
S1 Power Switch
SS Sustain Drive V1 LED (Stand-By / Power On) & Remote
Receiver
V2 Key Switch
SC Scan Drive PB Fan Control
SU Scan Out (Upper) P Line Filter, Power Supply
SD Scan Out (Lower) HX PC / RS-232C
C1 Data Drive (Upper Right) HA BNC Component Video
C2 Data Drive (Upper Center) DN Dital Signal Processor, Microcomputer
C3 Data Drive (Upper Left) HDMI Dual HDMI Terminal

7
TH-50PF10UK
3.2. Applicable signals

8
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9
TH-50PF10UK
4 Specifications
Power Source 120 V AC, 50/60Hz
Power Consumption
Maximum 650 W
Stand-by condition Save OFF 0.6 W, Save ON 0.4 W
Power off condition 0.1W
Plasma Display panel Drive method: AC type 50-inch,
16:9 aspect ratio
Screen size 43.5" (1,106 mm) (W) ×24.5" (622 mm) (H) ×50" (1,269 mm) (diagonal)
(No. of pixels) 2,073,600 (1,920 (W) ×1,080 (H) [5,760 ×1,080 dots]
Operating condition
Temperature 32 °F - 104 °F (0 °C - 40 °C)
Humidity 20 % - 80 %
Applicable signals
Scanning format 525 (480) / 60i 60p, 625 (575) / 50i 50p, 750 (720) / 60p 50p, 1125 (1080) /
60i 60p 50i 50p 24p 25p 30p 24sF 1250 (1080) / 50i
PC signals VGA, SVGA, XGA, SXGA
UXGA ..... (compressed)
Horizontal scanning frequency 15 - 110 kHz
Vertical scanning frequency 48 - 120 Hz
Connection terminals
HDMI A-B TYPE A Connector ×2
COMPONENT / RGB IN Y/G (BNC) with/sync 1.0 Vp-p (75-ohm)
PB/B (BNC), PR/R (BNC) 0.7 Vp-p (75-ohm)
AUDIO IN (RCA PIN JACK ×2) 0.5 Vrms (high impedance)
PC IN (HIGH-DENSITY Mini-D-SUB 15PIN) Y or G with/sync 1.0 Vp-p (75-ohm)
Y or G without/sync 0.7 Vp-p (75-ohm)
B/PB/CB: 0.7 Vp-p (75-ohm)
R/PR/CB: 0.7 Vp-p (75-ohm)
HD/VD: 1.0 - 5.0 Vp-p (high impedance)
AUDIO IN (M3 JACK) 0.5 Vrms
SERIAL EXTERNAL CONTROL TERMINAL (D-SUB 9PIN) RS-232C COMPATIBLE
SPEAKERS 6-ohm, 16 W [8 W + 8 W] (10 % THD)
Accessories Supplied
Remote Control Transmitter EUR7636070R
Batteries AA Size ×2
Fixing bands TMME203 ×2
Dimensions (W ×H ×D) 47.6" (1,210 mm) ×28.5" (724 mm) ×3.7" (95 mm)
(excluding handle portion)
Mass (weight)
main unit only approx. 90.4 lbs
with speakers approx. 99.2 lbs
Notes:
• Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.

10
TH-50PF10UK
5 Operating Instructions

11
TH-50PF10UK
GPF10D chassis series have special function and operation setting facility called Option Menu. This Option Menu is useful
for special function required customers. This should be set at the installation stage.
Note:
When both main unit buttons and remote control are disabled due to the “Button lock”, “Remocon User level” or “Remote ID”
adjustments, set all the values “Off” so that all the buttons are enabled again.
Press the “Volume down” button on main unit together with “R” button on the remote control and hold for more than 5 seconds.
The “SHIPPING“ menu is displayed and the lock is released when it disappears.
Option Menu for GPF10D series
Option menus default setting Contents
Weekly Command Timer --- Sets Weekly Command Timer.
Onscreen display On Enable/Disable to display input mode indication after power on and no signal
indication.
Initial INPUT Off Sets the initial input mode when the power is turned on. Allow input mode selec-
tion while power is on.
Initial VOL level Off Sets the initial volume level when the power is turned on. Allow Volume control
while power is on.
Maximum VOL Level Off Sets the maximum volume to desired level. Volume cannot exceed this level.
INPUT lock Off Fixes the input mode to AV, Component/RGB or PC. Can not change input
mode by input selection key.
Button lock Off Enable/Disable bottom operation buttons (Input, Menu, Enter and/or volume up/
down)
Remocon User Level Off Remote key invalidation.
Off: Valid key is all key of remote.
User1: Valid key are only Stand-by (ON/OFF), Input, Direct input, Status, Sur-
round, Sound mute On/Off, and volume adjustment.
User2: Valid key is only Stand-by (ON/OFF).
User3: All keys are null and void
Advanced PIP Off Off: Sets normal two screen display mode.
On: Sets Advanced PIP mode.
Off-timer function Enable Off-timer operation Enable/Disable.
Initial Power Mode Normal Sets the power mode of the unit for when the power recovers from failure or
after plugging off and in again.
ID select 0 Set ID number from 0 to 100.
Remote ID Off Remote ID function On/Off.
(While the Remote ID on, standard remote function can not control the unit.)
Serial ID Off Serial ID function On/Off
Display size Off Adjusts the image display size on screen.
On: Sets the image display size approximately 95% of the normal image dis-
play.
Studio W/B Off Set warm mode color temperature to 3,200 Kelvin.
Studio Gain Off Sharpens the contrast for a better view when a part of the image is too light to
see
Slot power Off Sets the slot power mode while the power is turned on.
Allow Optional Terminal Board insert Slots while power is on.
Power On Screen Delay Off You can set the power-on delay time of the displays to reduce the power load,
when you press to turn on the multiple displays that are set together, for
example, on MULTI DISPLAY system.
Set each display’s setting individually.
V. Installation Off V. Installation function On/Off (Not used)
Rotate Off The image rotates 180 degrees (up-down)
Serial Slot Select Slot1 Selects the slot which communicates serial.
Note: The setting of an external command can be set only from the fixed serial
terminal.

12
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6 Service Mode
6.1. CAT (Computer Aided Test) mode
To exit the CAT mode, access the ID mode and switch off the main power.
6.1.1. IIC mode
Select the IIC mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on
the remote control.
Subject and item are mentioned on “IIC mode structure”.
To exit the IIC mode, press the R button on the remote control.

13
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6.1.2. CD mode
Select the CD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on
the remote control more than 3 seconds.
Microcomputer software version (IC4002), this version can be upgrade by
1. Replace of new version IC
2. Loading the new version software from loader tool, TZSC07036.
Memory data change
To exit the CD mode, press the R button on the remote control.
6.1.3. SD mode
Select the SD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on
the remote control.
To exit the SD mode, press the R button on the remote control.

14
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6.1.4. MS mode
Select the MS mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on
the remote control more than 3 seconds.
To exit the MS mode, press the R button on the remote control.
Caution:
Market Select should be set after exchange of DN-Board.
Destination number
Default setting
6.1.5. ID mode
Select the ID mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on
the remote control more than 3 seconds.
To exit the ID mode, press the R button on the remote control.
Number Destination Number Destination
0 Japan 16 --
1 North America 17 --
2 Europe 18 China
3 Others 19 China (Hotel)
4 Britain 20 Russia
5 Taiwan 21 Russia (Hotel)
6 Thailand 22 Hong Kong
7--23--
8 Japan (Hotel) 24 --
9 North America (Hotel) 25 --
10 Europe (Hotel) 26 --
11 -- 27 --
12 Britain (Hotel) 28 Middle East/Hong Kong
13 -- 29 Middle East/Hong Kong (Hotel)
14 Thailand (Hotel) 30 Australia
15 -- 31 Australia (Hotel)
Number Destination
1 North America

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6.2. IIC mode structure (following items value is sample data)

16
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7 Troubleshooting Guide
7.1. Self Check
7.1.1. Display Indication
1. Self-check is used to automatically check the bus line
controlled circuit of the Plasma display.
2. To get into the Self-check mode, press the volume down
button on the customer controls at the bottom of the set,
at the same time pressing the OFF-TIMER button on the
remote control, and the screen will show.
If the IIC ports have been checked and found to be incorrect
Or not located then “ - - ” will appear in place of “ OK ”
“ 01 ” in the line of the “ PTCT ” means the number of blinks of
the Power LED is 1. (Reference to 7.1.2)
“ H09 ” in the line of the “ PTCT ” is the error code.
To exit the CAT mode switch off the main power.
Note:
The line of the “ PTCT ” displays when you get into the Self-
check mode for the first time only after the Power LED
blinks.

17
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7.1.2. Power LED Blinking timing chart
1. Subject
Information of LED Blinking 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.
About blinking LED

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TH-50PF10UK
7.2. No Power
First check point
There are following 3 states of No Power indication by power LED.
1. No lit.
2. Green is lit then turns red blinking a few seconds later.
3. Only red is lit.
7.3. No Picture

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TH-50PF10UK
7.4. 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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TH-50PF10UK
8 Disassembly and Assem-
bly Instructions
• To disassemble P.C.B., wait for 1 minute after power was off
for discharge from electrolysis capacitors.
• , , , and marks indicate screw positions.
8.1. Removal of Rear Cover
1. Remove screws (×7 , x13 , ×9 , ×4 ) and then
remove the Rear Cover.
8.2. Removal of HA-Board
1. Remove 4 screws (A) and then remove the HA Terminal
Block.
2. Remove 4 screws (B).
3. Remove 2 screws (C) and then remove the HA-Board.
8.3. Removal of HDMI-Board
1. Remove 4 screws (D) and then remove the HDMI Termi-
nal Block.
2. Remove 4 screws (E).
3. Remove 2 screws (F) and then remove the HDMI-Board.
8.4. Removal of DS-Board
1. Remove the HA Terminal Block and the HDMI Terminal
Block.
(Refer to Removal of HA-Board and HDMI-Board)
2. Remove the flexible cables from the connectors (DS1,
DS6).
3. Disconnect the connectors (DS2, DS3, DS4, DS7, DS8,
DS10, DS14, DS15, DS30).
4. Remove 5 screws and then remove the Slot Case.