TH-42LF20W, TH-47LF20W - Panasonic TV Service Manual (repair manual). Page 20

20

TH-42LF20W / TH-47LF20W

• Be careful not to strip the screw's thread, etc., as the screws

that screw into the cabinet back's periphery impact the out-
ward appearance.

• When re-installing the rear cover, be careful which holes the

wires come out from. (Refer to the wiring connection dia-
gram)

1. Remove the screws (Qty. 23) on the periphery of the cab-

inet back. (SCR FLT 4X12)

2. Remove the screws (Qty. 4) on the inside part of the rear

cover. (SCR BIN 4X6)

3. Remove the cabinet back carefully.

• Be careful not to strip the screw's thread, etc., as the screws

that screw into the cabinet back's periphery impact the out-
ward appearance.

• When re-attaching the cabinet back, be careful which holes

the wires come out from. (Refer to the wiring connection dia-
gram)

1. Remove the screws.

2. Remove the cabinet back carefully.

1. Remove the following board couplers.

Jack board: K39H
Main board: KLVP
Power board: KIV1, KIV2

2. Remove according to the previous section "Cabinet back

removal".

1. Remove the cabinet back.
2. Peel off the tape halfway that affixes the speaker lead on

the inside of the cabinet back, and then remove the
speaker lead. (Refer to the wiring connection diagram)

3. Remove the screws (Qty. 4 on each side) that screw in

the speaker unit and then replace it with the repair
speaker unit. (SCR S-TPG BRZ+FLG 3.0X8.0 V)

1. Remove the cabinet back.
2. Peel off the tape halfway that affixes the lead wire for the

key SW board on the inside of the cabinet back, and then
remove the lead wire. (Refer to the wiring connection dia-
gram)

3. Remove the 4 screws and replace the key SW board.

(SCR S-TPG BRZ+FLG 3.0X8.0 V)

• The lead wire is affixed to the shield casing on the main

board with the earth part on the key SW board, do not
forget to install so the key SW board is at a right
angle.minum foil tape. Re-use the shield casing with the
lead wire affixed as is.

• Secure the speaker and key SW board lead wires down

onto the inside of the cabinet back with tape so they do
not pop up.

• When re-attaching the rear cover, be careful which holes

the wires come out from. (Refer to the wiring connection
diagram)