Sony XR-CA440H Service Manual page 20

XR-CA440H
• IC Block Diagrams
– MAIN Board –
IC1 TB2118F-EL-S
24 23 22 21
REGULATOR
SEEK/RECP
OSCILLATOR
ON/OFF
BUFFER
1 2
IC301 CXA2509AQ-T4
30
PBFB2 31
PBRIN2 32
PBREF2 33
34
PBFIN2
VCT 35
VCT
PBGND 36
PBFIN1 37
PBREF1 38
PBRIN1
39
PBFB1 40
1
20 19 18 17 16 15 14 13
+
AMP
VDD
VCC
– +
AMP
4BIT SWALLOW
COUNTER
SEEK/RECP
+
PRESCALLER
12BIT
SIG
PHASE
PROGRAMMABLE
COMPARATOR
COUNTER
20BIT
IF COUNTER
40BIT SHIFT
REFERENCE
REGISTER
DIVIDER
18BIT
22BIT
18BIT
SERIAL I/O OUTPUT
INTERFACE PORT PORT
11
3 4 5 6 7 8 9 10 12
29 28 27 26 25 24 23 22 21
24dB
120µ/70µ
T2
+ –
20 MSMODE
– +
NR BIAS
MS
19 DRSW
X1
MODE
TAPE/AUX
18 TAPESW
F2
17 INSW
TAPE EQ
16 NC
FWD/RVS
VCC 15 NC
MS ON/
OFF
+
LPF +
DETECT
–
14 MSOUT
F3
F1
13 DGND
X1
12 MSTC
11 G1FB
T1
120µ/70µ
24dB
3 4 5 6 7 8 9 10
2
IC330 LC75421M-TLM-E
36 35 34 33
+
–
CONTROL
+
CIRCUIT
–
CCB LOGIC
INTERFACE CIRCUIT
CONTROL
CIRCUIT
1 2 3 4 5
IC351 LB1930M-TLM
VCC 1 10 NC
NC 2 BUFFER
IN1 3 9 OUT1
MOTOR
CONTROL
DRIVE 8 NC
CIRCUIT
CIRCUIT
4 7
IN2 OUT2
BUFFER
S-GND 5 6 P-GND
IC611 BA3918-V2
REGULATOR
OVER VOLTAGE
PROTECT
–
+
2 3 4 5 6 7 8 9
1
20 20
32 31 30 29 28 27 26 25
+
+
–
+
–
–
6 7 8 9 10 11 12 13
IC581 BA8270F-E2
BUS ON
14
BUS ON
1
SWITCH
RESET
RST 2 13
SWITCH
12
11
BATTERY
BATT 3 10
SWITCH
4
CLK
VREF 5
DATA 6 9
GND 7 8
10 11 12
24 23 22 21 20 19
+
–
+
R VREF
–
L VREF
14 15 16 17 18
VCC
RST
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT