Sony BVW-55 Maintenance Manual page 657

CN1
KY RX
CN-1779,4-5 5
KY TX
CN-1779,4-6 6
CN100
CONT
8
TXD
2
FOR CHECK RXD
3
MD
7
CN1
KEY RX
CN-1779,4-3 3
KEY TX
CN-1779,4-4 4
PB VD
CN-1779,4-7 7
CN100
RES
4
RV100-103
VR SEL
RV1,4-6
AUDIO
REC
LEVEL
RV41
AUDIO
PB
(CH1)
LEVEL
VR SEL
RV7
TRACKING
RV2,3,51
AUDIO
PB
(CH2-4)
LEVEL
BVW-55
Block diagram
IC104
IC105
5 PB0-4
8 D8-15
20 A0-19
15
IC102,103
RESET
IC IC108
INHIBIT
SERIAL
EEPROM
MPU
D125,126
4
LED
2
STBY/
SERVO
LOCK
4 IC106
ADDRESS
IC113 IC100
DECODER
4 4
SEL BUF
4
TP1
IC1 IC41
SEL BUF
IC41
3 3
BUF
KY-446 KY-446
Block diagram
IC109
S100-119,122-139
IC107
D110,111,114-124
8
SRAM
4 38
CS SWITCH
8
I/O
EXPANDER
30
LED
CS
3
4
3-15 3-15
IC111
CN2
5 JOG/SHTL FG 4
1-4
8
JOG/SHUTTLE
CONTROL
CS
CN2
SHTL/JOG
7
SHTL RESET
8
2
CN1
SUB LCD(CS,CK,RS,DATA)
8-11
SE-454,2-6to9
SE-454,2-3
SE-454,2-2
CN-1779,4-8to11
CONTROL PANEL FUNCTION
KY-446
LOT NO. 812-