Key Board - Sony XR-CA800 Service Manual

IC351 LB1930M-TLM
VCC 1
NC 2 BUFFER
IN1 3
CONTROL
CIRCUIT
4
IN2
BUFFER
S-GND 5
IC611 BA4908-V3
REGULATOR
OVER VOLTAGE
PROTECT
–
+
1 2 3 4 5 6
– KEY Board –
IC902 RRX9000-0601#1
L IN GND A V IN
16 15 14
INPUT 320kHz
320kHz
SLAGE /500kHz
BANDGAP
REFERENCE
1 2 3 4
L IN GND V STBY VCC
L
10 NC
9 OUT1
MOTOR
DRIVE 8
NC
CIRCUIT
7 OUT2
6 P-GND
7 8 9 10
V AGC
13
NOISE
SUPPRESSION
AGC
PULSE
FORMER
5 6 7
NC NC VPO
IC581 MM1175XFF
BUS ON
1
OUT
RESET
RESET
2
SWITCH
OUT
BATT
BATT 3
SWITCH
CLK
4
OUT
VREF 5
DATA
6
IN/OUT
GND 7
11 12
GND
LNS VCO NC
C
12 11 10 9
PULSE
COUNTER
8
NC
XR-CA800
14 VCC
RESET
13
IN
BUS ON
12
IN
CLK
11
IN
BATT
10
CHECK
9 DATA IN
8 DATA OUT
23