P.c.b. (Printed Circuit Board) Exchange Procedure; Adjustment Volume Locations - Panasonic TH-42PX20U Service Update Information

P.C.B. (Printed Circuit Board) exchange procedure

1. Caution
Wait 1 minute for the electrolytic capacitors to discharge before removing
any PCB from the unit.
2. Quick adjustment after P.C.B. or Panel exchange
P.C.B. Item
Panel
P Board Vsus
Vda
SC Board Vbk
Vad
Vset
VSCN
SS Board Ve
D, DG Board White Balance, Pedestal and Sub brightness for NTSC, Pal, HD, PC and 625i
signals
*Refer to the Panel label for the exact value.

Adjustment Volume Locations

Volume
All items in this table
R605 (P-Board) TPVsus (SS)
R590 (P) TPVDA (SS Board)
R6443 (SC) TPVBK (SC)
R6477 (SC) TPVAD (SC)
TPVSET 218 V ± 6V
(SC-BOARD)
TPVSCN Vad+118V ± 2V
(SC-BOARD)
R6774 (SS) TPVE (SS)
Figure 37
55
Test point Voltage level
Vsus ± 1V*
67V ± 1V
155V ± 5V*
-90V ± 1V*
Verify Only
Verify only
Ve ± 1V*