Sony MAP-S1 Service Manual page 77

IC851 BD00GA3WEFJ-E2
8 7 6 5
OCP
SOFT
TSD
1 2 3 4
IC901, 902, 904 TC74VHC153FT (EL)
DATA INPUTS
STROBE A
VCC 2C3 2C2 2C1 2C0
2G SELECT
16 15 14 13 12 11
2C3 2C2 2C1 2C0
2G
B B A
B B A
1G
1C3 1C2 1C1 1C0
1 2 3 4 5 6
STROBE B 1C3 1C2 1C1 1C0
1G SELECT
DATA INPUTS
IC852 AM5890S
VINFC 1
TRB1 2
REGO2 3
VINSL+ 4
REGO1 5
FWD 6
REV 7
VCC1
VOTR– 9
VOTR+ 10
VOSL+ 11
VOSL– 12
VOFC– 13
VOFC+ 14
IC903, 910 TC74VHC257FT (EL)
SELECT 1
OUTPUT
2Y
9
10
1A 2
2Y
1B 3
A
1Y 4
2A 5
A
2B 6
1Y
2Y 7
7 8
OUTPUT GND
GND 8
1Y
+
+
PRE
DRIVER
VCC1
8
TRAY
DRIVER
SLED
DRIVER (4x)
VCC1
ACTUATOR
DRIVER (6x)
VCC2
MAP-S1
MUTE 28 MUTE
27 BIAS
+
26 VINTK
+
25 TRB2
VOLTAGE
24 RESET
DETECTION
+
23 VINLD
22 GND
21 VCTL
20 VCCD
VCC2
19 VCC2
SPINDLE 18 VOLD–
DRIVER (4x)
VCC2 17 VOLD+
ACTUATOR 16 VOTK–
DRIVER (6x)
VCC2 15 VOTK+
THERMAL
SHUT DOWN
16
15
14
13
12
11
10
VCC
OE
4A
4B
4Y
3A
3B
9 3Y
77