Sony DSR-20MD Service Manual page 66

DSR-20MD/20MDP
VA-102 (AUDIO) SCHEMATIC DIAGRAM • See page 4-59 for VA-102 printed wiring board.
1 2 3
A
VA-102 BOARD (9/12)
AUDIO
-REF.NO.:1,000 SERIES-
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
B
VA-102 BOARD
(8/12)
(SEE PAGE 4-77)
C
D
(SEE PAGE 4-78)
E
F
G
H
I
J
C717
300p
CH
K
8 7
IC705
1 2
L C715
300p
CH
M C719
0.1u
F
CL743
VA-102 BOARD 3-1
3
05
(1/12)
(SEE PAGE 4-63)
AUDIO
VA-102 (9/12)
4 5 6 7
AUDIO_GMD
22-1
22
AUDIO_GND
22-2
R742
10k
23-1
VA-102 BOARD
23
CL717
(8/12)
23-2
16
1
R748
10k
C736
0.1u
F
C729
0.1u
F
C720 C725
C738
0.1u 0.1u
0.1u
F F
F
R740
680
R753
R738 130k
10k
R733 R743
10k
47k
R727
100k
C726
R729 R736 R744 C739
300p 10k 300p
100k 10k
CH CH
6 5 8 7 6 5 8 7 6 5 8 7 6 5
IC707 IC709 IC710
3 4 1 2 3 4 1 2 3 4 1 2 3 4
0
R728 R730
100k 100k
C724 R735 R745
C737
300p 10k 10k
300p
CH
CH
R732
10k R746
47k
R754
130k
R737
10k
C733
C727 C740
R739
0.1u 0.1u
680 0.1u
F F
F
4-79
8 9 1 0 1 1
R757
24k
CL721
R758
CL744
10k
IC716
15 14 13 12 11 10 9 IC716
C751 NJM2115V(TE2)
R775 47p
100 CH 4.8
R790
0
100
0
IC711
TC74HC4053AFT(EL)
R774 0
IC711
10k 0
0 C760
-4.8 0 47p
CH
2 3 4 5 6 7 8
CL722
R789
R755 R756
R776 4700
24k
10k
4700
C746
0.1u C752
0.1u
F
F
4.5
5.9
Q701
UN5211-TX Q702
0 UN5111-TX
C756
0.1u
5.9 F
C748
C743 C761
0.1u
0.1u Q703 0.033u
F
F 2SC4081T106R B
R788
R773
C768 6800
2200 R791
0.033u
R765 100
B
10k
R777
R759 4700
R771 C757
47k 10k
0.033u R795
B 39k
R779
R769
10k 3900
R807
CL723 R783 R805
C744 R760
0
300p 6200 39k
130k
CH 4.8 0 0 0
8 7 6 5 8 7 6 5 8 7 6 5
IC713 IC714 IC717
1 2 3 4 1 2 3 4 1 2 3 4
C772
0
0 R804 0
R808 47p
-4.8
R761 R780 R784 39k
0 CH
130k CL724 6200
3900
C742 R768
R762
300p 10k 0 C755
R792
47k R778
CH 0.033u
R770 4700 B 39k
10k
R796
100
R763 0.7
10k
Q704
2SC4081T106R R785
6800
C759
R772 C767
0.033u
2200 0.033u
B
B
C745 C763
C749
0.1u 0.1u
0.1u
F F F
1 2 1 3 1 4 1 5
AUDIO_-5V
AUDIO_5V
A.-4V
A.+4V
GND
16-7
16-8
AD_VDD
CL740
CL741
CL742
CL725
CL726
CL727
R798 1k
CL728
R799 HP
1k
HP
R800
220
CL729
CL730
CL731
R801 220 CL732
R794
10k
CL733
R802 220
CL734
R803
Q710 Q712
220 Q708
CL735
UN2225T.(TX) UN2225T.(TX)
UN2225T.(TX) 0 0 0
Q705
UN5213-TX
0 0
0.3
C765 0 0
Q709
0.1u 0 Q713
UN2225T.(TX)
F UN2225T.(TX)
5.9 0
Q711
UN2225T.(TX)
Q706
UN5113-TX 5.9
CL736
CL738
R797
1k
4.5
0.7
Q707
UN5211-TX
R815
0
C766
C773
10u
0.1u
16V
F
R812
10k
R811 R810
10k 10k
C774
47p
0 0
CH
8 7 6 5
0
IC718
1 2 3 4
0 0 -4.8
R813
R814
10k
10k
R809
10k
SIGNAL PATH
AUDIO
SIGNAL
C764 REC
C771
10u
0.1u
16V
F
PB
4-80
1 6 1 7 1 8
VA-102 BOARD
17
(11/12)
(SEE PAGE 4-84)
VA-102 BOARD
18
(11/12)
(SEE PAGE 4-84)
VA-102 BOARD
16
(10/12)
(SEE PAGE 4-81)
CN702 12P
1 AD VDD
2 LCH REC VR
3 GND
4 RCH REC VR
5 GND
6 A.+4V
HP-100 BOARD
7 GND
CN001
8 A.-4V (SEE PAGE 4-95)
9 GND
10 HP RCH OUT
HP
11 GND
12 HP LCH OUT
HP
1 GND
2 GND
3 A.IN_L
4 GND
5 A.IN_R
6 GND
7 A.OUT_L
RE-32 BOARD
CN101
8 GND
(SEE PAGE 4-58)
9 A.OUT_R
10 GND
11 A.MON_L
12 GND
13 A.MON_R
14 GND
15 EXT/XINT SYNC
CN703 15P
16-9
16 VA-102 BOARD
(10/12)
(SEE PAGE 4-81)
16-10
VA-102 BOARD
UNSW_6V 18
(11/12)
(SEE PAGE 4-84)