Sony BVW-55, Maintenance Manual, Page: 648 / 942

3-6
BVW-55
3-6
AFM-16 (1/2)
Block diagram Block diagram
AFM-16 (1/2)
AFM REC/PB, PB AUDIO LEVEL CONTROL
AFM-16 (1/2)
LOT NO. 812-
CN22
BUF
IC91
45
Q701
H:LNG CH1 ON(LCH)
51
STD
MOD/
AFM REC RF
CH1 AFM REC SIG
2
CN21
INV
LNG CH1(LCH)
Q91-98
H:LNG CH2 ON(LCH)
52 LNG CH2(LCH)
H:AFM CH1 ON(LCH)
53 AFM CH1(LCH)
H:AFM CH2 ON(LCH)
54 AFM CH2(LCH)
H:LNG CH1 ON(RCH)
55 LNG CH1(RCH)
H:LNG CH2 ON(RCH)
56 LNG CH2(RCH)
H:AFM CH1 ON(RCH)
57 AFM CH1(RCH)
H:AFM CH2 ON(RCH)
58 AFM CH2(RCH)
CN21
80
79 L:METAL/H:OXIDE
H:AFM MUTE IN
IC71
AFM POWER SAVE2
AFM POWER SAVE1
L:REC CONT
H:VIDEO REC/EE(MOD)IN
77
BUF
78
97
98
AFM POWER SAVE1
AFM POWER SAVE2
L:REC CONT IN
H:VIDEO REC/EE
H:REC CONT IN
IC70
L:VIDEO REC/EE
IC70
SHIFT
LEVEL
Q71,72
AFM EE/PB(FET)
Q22,23
LPF
Q21
FL21
RV21
AFM C-A
RF LEVEL
MUTE
Q24
CN22
37
AFM PB A RF
BPF
540K
Q601
FL601
RF
DET
RF
VAR
IC125,Q602-604
PB
DET
L:VIDEO REC/EE
20
10
2
5
12
6
IC601
IC602
GEN
PULSE
IC122-124
IC120
18
AGC
LATCH 99
CN21
L:VIDEO REC/EE
IC120,121
AFM PB B RF
CN22
39 LPF
FL41
Q41
AGC
Q42,43
MUTE
Q44
8
ENVE
2
RF
VAR
10
6
5
20
RF
IC702
C SW PULSE
RF LEVEL
AFM C-B
RV41
RF MUTE
18
AMP
VAR
IC704
DO
IC704,707
DO
AMP
13
FL702
BPF
310K
540K
BPF
FL603
BUF
CH1 H:EE/L:PB
IC71
50
MON L:AFM/H:LNG
MON L:FIX/H:VAR
84
83
CH2 H:EE/L:PB
49
SHIFT
LEVEL
Q61,62
CH1 EE/PB(FET)
Q63,64
Q81,82
Q83,84
SHIFT
LEVEL
LEVEL
SHIFT
LEVEL
SHIFT
CH2 EE/PB(FET)
MON FIX/VAR(FET)
MON AFM/LNG(FET)
PC
VCO
HOLD
DO
DET
PB
CONT
Q705
FREQ.
CH4 CARRIER
RV703
RV702
CH4 DEVIATION
12
10
5
17
1
16
IC709
MOD/DEMOD
11
310K
BPF
12
PC
FL602
11
10
VCO
HOLD
DO
DET
DEMODULATOR
IC608
5
FREQ.
CH3 CARRIER
RV601
17
12
PC
10
11
CH3 DEVIATION
16
17
VCO
HOLD
MOD/DEMOD
DET
DO
RV603
Q605
CONT
CH3 CARRIER
1 PB
FREQ.
RV602
5
IC609
BPF
540K
FL703
12
11
10
PC
RF MUTE
17
VCO
DET
DO
HOLD
CH4 CARRIER
FREQ.
RV701
5
IC708
DEMODULATOR
L:REC CONT IN
MUTE
IC662 Q662,663
SEL
AMP
LPF MOA
FL762
IC600
NOISE REDUCTION
VCA
DET
3
5
24
IC131,132
Q131
IC663
RV662
CH3
IC762
MUTE
FL762 Q762,763
SEL LPF
RV762
VCA MOA
DET
LEVEL
LIMITER
RV131
26 20
9
IC763
AMP
LPF
Q672
Q673
LPF
Q676
MIX MUTE AMP
Q675 Q676
CH2 AFM REC SIG
6
CN22
L:REC CONT IN
L:META/H:OXIDE
H:AFM MUTE IN
RF MUTE
H:VIDEO REC/EE
IC125
IC125
IC705
IC701
D700
PB LEVEL
AFM CH1
RV801
CH1 AFM PB
CH3 EE SIG
RV802
AFM CH1
EE LEVEL
EE LEVEL
AFM CH2
RV804
CH4 EE SIG
PB LEVEL
AFM CH2
RV803
CH2 AFM PB
APR-42,31-59
APR-42,31-61
APR-42,31-63
APR-42,31-65
APR-42,31-67
APR-42,31-68
APR-42,31-69
APR-42,31-70
APR-42,31-73
APR-42,31-74
APR-42,31-71
APR-42,31-72
APR-42,31-87
APR-42,31-88
RP-107,401-14
CN21
SV-206,303-13
RP-107,401-16
APR-42,31-95
AU-262,11-77
AU-262,11-78
APR-42,31-77
APR-42,31-78
CN21
APR-42,31-96 CN21
CN22
RP-107,401-38
APR-42,32-5
APR-42,32-1
AGC HEAD AMP
AGC AMP
DEMOD
BALANCE
IC662
IC762
BALANCE
DEMOD
DEMOD BALANCE
CH4
DEMOD BALANCE
IC663
AMP
NR LEVEL
CH3
RV663
RV763
CH4
NR LEVEL
AMP
IC763