Replacement Method For Main Board And Jack Board - Panasonic TH-42LF20U Service Manual

TC-42LF20U / TC-47LF20U
8.5. Replacement method for main
board and jack board
1. The terminal section is screwed in from the outside, so
remove the screws as shown in the illustration.
2. Remove 1 screw on the jack board that screws in the
earth terminal which comes off from the left side of the
main board. (SCR PAN+SW+W 3X8)
3. Remove the 7 screws that screw the shield casing onto
the main board. (SCR PAN+SW+W 3X8)
4. Remove the coupler that is connected to the main board,
and then carefully remove the main board. Couplers on
the main board:
K16C, KSPR, KSPL, KLVP, K16B, K16A, K8F, K72E,
K72D
5. Replace the main board with the replacement board.
Precautions when removing and installing
• The lead wire is affixed to the shield casing on the main
board with aluminum foil tape. Re-use the shield casing
with the lead wire affixed as is.
• The gasket is affixed to both sides of the main board.
The gasket is not included on the replacement board, so
replace the gasket at the same time as well.
6. Remove the 4 screws that screw in the jack board.
(SCR PAN+SW+W 3X8)
7. Remove the couplers that is connected to the jack board
and carefully remove the jack board.
Couplers on the jack board: K39H, K39G, K19F, K10E,
K10D
8. Replace the jack board with the replacement board.
18