Yamaha PW8 Service Manual page 29

H G
AC1, AC2, AC3 CIRCUIT DIAGRAM (PW8)
AC3
1
2
AC1
3
AC Inlet
J, U
H,B,O,A T6.3AL 250V
2SC5395 (V2797700)
4
TRANSISTOR
AC1: Q101
2
3
1: EMITTER
1 2: COLLECTOR
2 3
1 3: BASE
ISA1993AS1 (WK608600)
TRANSISTOR
AC1: Q102–104
5
2
3
1: EMITTER
1
2: COLLECTOR
2 3
1 3: BASE
28CC1-2001033803-1 1
4
6
F E
POWER ON/OFF
not installed
only J
not installed
only
U,H,B,O,A
not
installed
F101
T10AL 250V
: Capacitor（規格認定コンデンサー）
D
to DC1-CN102 to DC2-CN201
Toroidal Transformer
to Transformer (Primary)
not
installed (Gray)
J: Yellow
U: Brown
H,B,O: Blue
A: Red
to DC1-
CN103,
DC2-
CN203
C B
AC2
to DC2-CN202
(Secondary)
(Primary)
AC1, AC2, AC3 CIRCUIT DIAGRAM (PW8)
A
PW8
+12
+48
+15
-15
(Rear panel)
(Rear panel)