Panasonic TH-42PY80PA / TH-42PZ80BA / TH-42PZ80EA 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
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7 Disassembly and Assembly Instructions
7.1.
Remove the Rear cover
1. See Service Hint (Section 3)
7.2.
Remove the Fan unit
1. Unlock the cable clampers to free the cable.
2. Remove the screws (
2. Remove the screws (
×3 ).
3. Remove the relay connectors and remove the Fan unit.
4. Remove the screw (
×1
) on the back side.
5. Remove the Fan.
7.3.
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 couplers (P2, P6, P7, P9, P11, P12 and
2. Disconnect the couplers (P2, P6, P7, P9, P11, P12 and
P25).
3. Remove the screws (
×6
) and remove the P-Board
unit.
4. Remove the screws (
×20
) on the back side.
5. Remove the screws (
×7 ).
6. Remove the molding props (
×13 ).
7. Remove the P-Board.
Note:
When assembling the P-Board, the position of each hole of
the insulation sheets (A and B) is set to the position of each
the insulation sheets (A and B) is set to the position of each
19
hole of the P-Board, then assemble them. (
marks indi-
cate setting positions.)
7.4.
Remove the Rear Terminal
cover
cover
1. Remove the screws (
×3 ,
×2 ,
×2 ).
2. Remove the Rear Terminal cover.
7.5.
Remove the tuner unit
1. Unlock the cable clampers to free the cable.
2. Disconnect the connectors (A1, A2, A3, A5, A6, A7, A8,
2. Disconnect the connectors (A1, A2, A3, A5, A6, A7, A8,
A11, A12, A51, A52 and A83).
3. Remove the screws (
×4
) and remove the tuner unit.
7.6.
Remove the A-Board
1. Remove the tuner unit. (See section 7.5.)
2. Remove the tab and remove the CI cover.
2. Remove the tab and remove the CI cover.
3. Remove the screws (
×8
) and remove the A-Board.
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7.7.
Remove the SU-Board
1. Remove the flexible cables (SU1, SU2, SU3 and SU4)
connected to the SU-Board.
2. Remove the flexible cable (SU11-SD11) and the bridge
connector (SC41-SU41).
3. Remove the screws (
×2 ,
×2
) and remove the SU-
Board.
7.8.
Remove the SD-Board
1. Remove the flexible cables (SD1, SD2, SD3 and SD4)
connected to the SD-Board.
2. Remove the flexible cable (SU11-SD11) and the bridge
connectors (SC42-SD42 and SC46-SD46).
3. Remove the screws (
×2 ,
×2
) and remove the SD-
Board.
7.9.
Remove the SC-Board
1. Remove the SU-Board and SD-Board. (See section 7.7.
and 7.8.)
2. Unlock the cable clampers to free the cable.
3. Disconnect the connector (SC2).
4. Disconnect the flexible cable (SC20).
5. Remove the screws (
3. Disconnect the connector (SC2).
4. Disconnect the flexible cable (SC20).
5. Remove the screws (
×8
) and remove the SC-Board.
7.10. Remove the SS-Board
1. Unlock the cable clampers to free the cable.
2. Disconnect the connectors (SS11, SS12, SS33, SS34
2. Disconnect the connectors (SS11, SS12, SS33, SS34
and SS35).
3. Disconnect the flexible cables (SS61, SS63, SS64 and
SS66).
4. Remove the screws (
×6
) and remove the SS-Board.
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