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9.3. P.C.B. (Printed Circuit Board) exchange
9.3.1. Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
9.3.2. Quick adjustment after P.C.B. exchange
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS (SS)
Vsus ± 2V
R628 (P)
*
Vda
TPVDA (SS)
67V ± 1V
R665 (P)
PFC
C446 (+) (-) (P)
395V ± 0.5V
R443 (P)
Vlow
C557 (+) (-) (P)
73V ± 0.1V
R661 (P)
load current : 0.4A
Csus
TPVSUS (SS)
178V ± 0.5V
R671 (P)
load current : 1.45A
SC Board
Vad
TPVAD (SC)
-90V ± 1V
VR6477 (SC)
SS Board
Ve
TPVE (SS)
Ve ± 2V
VR6074 (SS)
*
D, DG Board
White blance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
Caution:
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
9.4. Adjustment Volume Location
9.5. Test Point Location
21
TH-37PWD8BK
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