Panasonic TX-PR50U10 Service Manual ▷ View online
17
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
18
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.
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.)
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.
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
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.
5. Remove SC jig from SC board.
Remark: This SC jig can be used for all 2009 Plasma TV and Plasma Display.
19
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.
charge from electrolysis capacitors.
1. Unlock the cable clampers to free the cable
2. Disconnect the connectors (P2, P6, P7, P9, P11, P25,
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
cover and Rear terminal cover
1. Remove the claw (
×1 ).
2. Remove the Side terminal cover.
3. Remove the Adjustment cover.
4. Remove the screws (
4. Remove the screws (
×4 ,
×3 ,
×2 ).
5. Remove the Rear terminal cover.
20
8.4.
Remove the Tuner unit
1. Unlock the cable clampers to free the cable.
2. Disconnect the connectors (A1, A7, A8, A11, A12 and
2. Disconnect the connectors (A1, A7, A8, A11, A12 and
A25).
3. Disconnect the flexible cables (A20, A31 and A32).
4. Remove the screws (
4. Remove the screws (
×2 ,
×1
) and remove the
Tuner unit.
8.5.
Remove the A-Board
1. Remove the Tuner unit. (See section 8.4.)
2. Remove two EDGE SADDLES at top of case.
2. Remove two EDGE SADDLES at top of case.
Twist the EDGE SADDLE to press up at the back and pull
down the front side.
down the front side.
3. Remove the screws (
×4
) and remove the A-Board.
Caution :
Press up the case not to touch the leg of clamper to the A-
board.
Pay attention two metal projection from back side when
removal and assemble.
board.
Pay attention two metal projection from back side when
removal and assemble.
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