Panasonic TH-42PX50UA, Service Manual, Page: 6 / 26

3.3. P.C.B. (Printed Circuit Board) exchange
3.3.1. Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
3.3.2. Quick adjustment after P.C.B. exchange
P.C.B. Name Test Point Voltage Volume Remarks
P Board Vsus TPVSUS (SS) Vsus ± 2V VR351 (P) *
Vda TPVDA (SS) 70V ± 1V VR352 (P)
PFC C446 (+) (-) (P) 395V ± 0.5V R443 (P)
Vlow C555 (+) (-) (P) 73V ± 0.1V R661 (P) Vda load current : 0.4A
Csus TPVSUS (SS) 178V ± 0.5V R671 (P) Vsus load current : 1.7A
SC Board Vad TPVAD (SC) -105V ± 1V VR6477 (SC)
SS Board Ve TPVE (SS) Ve ± 2V VR6145 (SS) *
D, DG Board White blance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
3.4. Adjustment Volume Location
6
TH-42PX50U / TH-42PX500U