Yamaha PW8 Service Manual page 30

H G
DC1 CIRCUIT DIAGRAM (PW8)
(Black)
to Transformer
(Red)
(Secondary)
(Red)
28CC1-2001033804-1
D25XB60 (VR14990R)
DIODE STACK 25.0A 600V
DC1: D101
F E
not installed
not installed
FMU-22S (WD88620R) 2SC5395 (V2797700) 2SD1913 (VC407900)
DIODE STACK 10A 200V TRANSISTOR TRANSISTOR
DC1: Q106–109
DC1: D108, D109 DC1: Q105
2
3
1: EMITTER
2: COLLECTOR
1
2 3
1 3: BASE
D C
OP AMP
OP AMP
2SB1274 (VC614000) ISA1993AS1 (WK608600)
TRANSISTOR TRANSISTOR
DC1: Q104 DC1: Q110–113
1
2
3
2
2
1
1: BASE 1: BASE 3
1
2: COLLECTOR 2: COLLECTOR
2
3 1
3
3: EMITTER 3: EMITTER 1
B
to DC2-CN204
: Mylar Capacitor（マイラーコンデンサー）
2SA1386A/2SC3519A (V5611000)
PAIR TRANSISTOR
DC1: Q102N, Q102P, Q103N, Q103P
2SA1386A
(PNP)
2
1
3
2SC3519A
(NPN)
2
1: EMITTER 1: BASE
1
1
2: COLLECTOR 2
2: COLLECTOR
3
2 3
3: BASE 3: EMITTER
3
DC1 CIRCUIT DIAGRAM (PW8)
A
PW8
1
to Fan (R)
2
to AC1-CN104
3
4
5
5
6