10.3. P.C.B. (Printed Circuit Board) exchange
10.3.1. Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
10.3.2. Quick adjustment after P.C.B. exchange
P.C.B. Name Test Point Voltage Volume Remarks
P Board Vsus TPVSUS (SS) 175V ± 1V R628 (P) *
Vda TPVDA (SS) 67V ± 1V R665 (P)
PFC C488 (+) (-) (P) 395V ± 0.5V R443 (P)
Vdat C577 (+) (-) (P) 67V ± 0.1V R665 (P) load current : 0.4A
Vsus TPVSUS (SS) 188V ± 1V R628 (P) load current : 2.0A
SC Board Vad TPVAD (SC) -90V ± 1V VR6477 (SC)
Vset TPVSET (SC) 232V ± 6V Fixed
Vscn TPVSCN (SC) Vad + 120 ± 3V Fixed
SS Board Ve TPVE (SS) 156V ± 1V VR6074 (SS) *
D, DG Board White blance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
10.4. Adjustment Volume Location
30
TH-42PA50E / TH-42PE50B / TH-37PA50E / TH-37PE50B
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