8.1.3.
P.C.B. (Printed Circuit Board) exchange
8.1.3.1.
Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
8.1.3.2.
Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
P.C.B.
P Board
Vsus
SC Board
Vad
SS Board
Ve
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
8.1.4.
Adjustment Volume Location
8.1.5.
Test Point Location
Name
Test Point
TPVSUS (SS)
TPVAD (SC)
TPVE (SS)
Voltage
Vsus ± 2V
R628 (P)
-105V ± 1V
VR16600 (SC)
Ve ± 1V
VR16000 (SS)
25
Volume
Remarks
*
*