Sony DSR-250 Service Manual page 113

For Schematic Diagram
• Refer to page 4-63 for printed wiring board.
2 3
1
VI-156 BOARD(21/25)
A
AUDIO-4(AU BLOCK)
-REF.NO.:10000 SERIES-
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
R :REC MODE
P :PB MODE
B
C1083
R1101
0.1u
100k
B
L_OUT
R_OUT
C1084
0.1u
B
C
R1104
R1084
100k
100k
D
183
TO(20/25)
E
HP_MUTE
F
G
16
4 5 6
L1087
XX
± 10%
IC1085
R1093 R1094
OUTPUT SELECT
470k 470k
C1089
R1102
100k
C1088
L1085
10u
10uH
10V
± 10%
TA
16 15 14 13 12 11 10 9
20
1 2 3 4 5 6 7 8
C1086
0.1u
C1085 B
10u
10V
C1087
TA
0.1u
B
4-53
7 8 9
L1086
10uH
± 10%
C1100
IC1086
10u
16V
TA
HEADPHONE/SPEAKER
AMP
C1093 C1095
C1090
0.1u 0.1u
0.1u 0.1u
B B B B
C1092
C1098
0.1u C1097 47u
B 0.1u 6.3V
B TA
R1100 0
R1099 0
R1088 18 R1623 18
18 R1624 18
R1089
2SD2216J-QR(K8).SO
C1099
HP MUTE SWITCH
47u
6.3V
0 0
R1626
TA
R1625
19 18 17 16 15 14 13 12 11
820
0
820
0
Q1033 Q1034
2SD2216J-QR(K8).SO
HP MUTE SWITCH
R1087
100k
1 2 3 4 5 6 7 8 9 10 2SD2216J-QR(K8).SO
HP LEVEL
3.7
C1096
0.1u
R1090
B
C1094
0.1u
R1091
B
C1609
R1092
2.2u
B
R1085 R1086
1k 1k
C1091
4.7u
6.3V
TA
10 11 12
SP_VCC 185
MONI_CH1
186
MONI_CH2
180
AU_4.6V
SP+
187
SP-
HP_R_OUT
188
HP_L_OUT
C1610
0 0
R1098 R1095
R1097 47u
R1096
820 100k 10V
820
0
100k
TA
0
R1642
1k
Q1032
Q1031 2SD2216J-QR(K8).SO
HP LEVEL
1k
SP_L
1k 189
SP_R
68
184
ALARM
170
AUDIO_GND
190
MONI_LEVEL
SIGNAL PATH
AUDIO
SIGNAL
REC
PB
4-54
DSR-250/250P
TO(20/25)
TO(22/25)
TO(25/25)
TO(22/25)
TO(23/25)
TO(23/25)
TO(20/25)
TO(24/25)
TO(22/25)
AUDIO-4
VI-156 (21/25)