Sony BVW-55 Maintenance Manual page 651

CH1
CN11
CH1 LNG REC SIG
APR-42,31-85 68
TP301
CN300
CH1 HEAD (Y)
2
LAU CH1 HEAD
1
CH1 HEAD (X)
CN11
2 CH 1/2
APR-42,31-97 TO 98 79,80
BIAS ON
CN11
APR-42,31-100 64 TC INSERT
APR-42,31-83 82 NR ON
APR-42,32-3 90 ATT ON
APR-42,32-4 92 SLOW EQ ON
APR-42,32-7 94 METAL
CN11
LTC PB/REC
SV-206,301-4 93
CN11
CH1 BIAS CLK(X)
SV-206,301-7 97
CN11
CH1 BIAS CLK(Y)
SV-206,301-5 98
IC700
CN11
T/C CURRENT
SV-206,301-2 95 BUF
CN11
CH2
CH2 LNG REC SIG
APR-42,31-89 72
CN300
CH2 HEAD (Y)
5
LAU CH2 HEAD
4
CH2 HEAD (X)
CN11
CH2 BIAS CLK(X)
SV-206,301-8 99
SV-206,301-6 100
CH2 BIAS CLK (Y)
IC800
CN11
2
APR-42,31-79 TO 80 54,56
2
APR-42,31-81 TO 82 58,60
2 BUF
APR-42,31-95 TO 96 77,78
2
APR-42,31-93 TO 94 75,76
CN11
APR-42,31-99 63
IC803-805
CN11
APR-42,31-73 62
APR-42,31-91 73 BUF
APR-42,31-92 74
BVW-55
Block diagram
IC100,101
Q100
IC100
AGC
AMP
AMP
AGC
CONT
METAL
METAL
SEL
Q102-106
RV302 RV301
S300
TP301 CH1 FREQ. CH1 FREQ.
CH1 HEAD
RESP(M) RESP(O) Q304 Q305
TUNE
PB EQ METAL
MUTE
AMP EQ
Q302
IC301
METAL PB MUTE
RV300
PB/
CH1 HEAD
IC300 REC
DUMP
CONT
Q300,301
LV300
CH1 INSERT
BIAS TRAP
PB/REC
LV501
RELAY
CH1 PB/REC
DRIVE
IC504,Q512
IC503
RY500
BUF
RV702 RV704
IC706
AMP +
LV500 RV505
RV700 IC702
IC701
OR TC INSERT
5V
IC505,Q502
IC507
REG
GATE RV500 RV542
-5V
CH1 BIAS ON METAL/
T500
OXIDE
SELECT
CH1 BIAS ON
METAL/OXIDE
SAME THING AS THE ABOVE BLOCK DIAGRAM
CH 1/2 REC MUTE
CH 1/2 PB MUTE
5V-2
CH 1/2 EE/PB
Q951
IC951-953
CH 1/2 REC/PB
IC981 POWER
5V-4
Q952,953
SW
POWER
CONTROL
POWER
CH1 REC/PB -5V-4
SW
METAL/OXIDE S801
Q954
LIM/AGC
-5V-2 -6V
MANUAL
AU-262 AU-262
Block diagram
IC106
RV101
CH1 DOLBY IC103
LEVEL(EE) MANUAL
BUF
SIGNAL IC106
LIMIT
LEVEL
MUTE LIM/AGC
DETECT
Q101 IC102
LIMIT/AGC
RV100
TP302
DOLBY
Q306 Q307 IC301 IC302,304,403 Q114
SLOW PB
ATT AMP MUTE
EQ PHASE
RV303 RV304
ATT ON SLOW PB MUTE
OXIDE PB METAL PB
EQ ON
PHASE PHASE
METAL/
OXIDE
SELECT
Q308-311
METAL/OXIDE
TP500
IC501 IC501 Q119 IC111
REC
BUF + AMP MUTE
PHASE
RV110 RV109
OXIDE METAL
IC502 CH1 REC
REC REC
MUTE
CROSS
PHASE PHASE
TALK
RV502 METAL/
OXIDE
SELECT
Q113,115
Q190,191
RV504 RV503
IC503 METAL/OXIDE
CROSS
TALK
CV500
5V
METAL/OXIDE
IC9OO
PWM
CONT
5V
IC9OO
PWM
CONT
5V-2
IC180,181
6V 5V-2
IC907,Q900 Q180
REF
REG 5V-2 AGC/LIM REF
VOLTAGE
RV180
IC907,Q901
REG -5V-2
-5V-2
3-9 3-9
Q107
TP100
IC207
BUF
IC208
IC205
(LINE OUT) CH1 LNG PB SIG
BUF
DOLBY
CH1 EE/PB
C
(FET)
(REC) RV102
CH1 EE/ PB LEVEL
IC103
EE/
PB
BUF
CONT
Q108 Q117,109
EE/PB
RV103
METAL
REC
IC109
Q112
EQ
RV105 RV104
METAL METAL
FREQ. FREQ.
RESP. RESP.
METAL/
OXIDE
RV106
OXIDE
REC
IC110
EQ
Q111
R108 RV107
OXIDE OXIDE
FREQ. FREQ.
RESP. RESP.
5V
IC902 +12V
Q902,905,906 Q926
CP REG +12V
ON/OFF POWER
+12V
DRIVE SW
IC903,Q907-916
POWER
CONT
5V
CP REG -12V
POWER
Q903,904,927 SW
Q926
ON/OFF
-12V 6V
-12V POWER ON MUTE
DRIVE
POWER
ON/OFF
DET CP POWER OFF MUTE
IC904
Q917,918
Q922,923
D903
CH2 LNG PB SIG
5V-2
Q193 Q293
POWER POWER
5V-5 5V-6
SW SW
Q194,195 Q294,295
POWER POWER
CONT CONT
POWER POWER
-5V-5 -5V-6
SW SW
Q192 Q292
-5V-2
METAL/OXIDE
CN11
42 AFM-16,21-41
CN11
37,38
CN11
39,40
CN11
36 APR-42,31-37
35 CP-316,601-6
HP-88,8-7
CN11
46 AFM-16,21-45
LONGITUDINAL AUDIO REC/PB
AU-262
LOT NO. 812-