Sony WX-C55 Service Manual page 50

IC1 BU2624FV (MAIN BOARD)
REFERENCE
XIN 1
DIVIDER
CE 2
I/O
CK 4 SHIFT REGISTER LATCH
CTL
DA
5
CD 6
P0 7
9
P1
P3 10
IC300 CXA2510AQ
30 29 28 27
120µ/
70µ
– +
PBFB1 31
X1
PBRIN1 32
F2
33
PBREF1
PBFIN1 34
VCT 35
VCT
PBGND
36
+
37
PBFIN2
F1
PBREF2 38
X1
PBRIN2 39
PBFB2 40
120µ/
70µ
1 2 3 4 5
50
PHASE
DET
MAIN
PRESCALER
COUNT
IF COUNT
CTL
20BIT COUNT
26 25 24 23 22 21
NR
T2
+ –
NR BIAS
MODE
TAPE/AUX
TAPE EQ
MODE
FWD/RVS
VCC
LPF
+
DETECT
–
F3
OFF/B
T1
NR
6 7 8 9 10
20 XOUT
19
VSS
18 PD
17 VDD
16 FMIN
AMIN
15
P2
14
13 IFIN
12 SD
11 P4
20 MSMODE
MS
19 DRSW
18
TAPESW
17 INSW
NR
16 NRSW
15 NC
MS ON/
OFF
14 MSOUT
13 DGND
12
MSTC
11 FF
IC331, 341 NJM4558M
A OUT 1 8
VCC
7
A B OUT
– +
A IN– 2
B
+ –
A IN+ 3
6 B IN–
VEE 4 5 B IN+
IC620 BA8270F
BUS ON
BUS ON
1
SWITCH
RESET
RST 2
SWITCH
BATTERY
BATT 3
SWITCH
4
CLK
VREF 5
6
DATA
GND 7
14 VCC
13 RST
12 BUS ON
CLK IN
11
10 BU IN
9 DATA IN
8 DATA OUT