Sony CDX-646 Service Manual page 28

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• IC Block Diagrams
– RF Board –
IC101 CXA2596M-T6
HOLD 1
AGCVTH 2
APC LD
LD 3
AMP
APC PD
PD 4
AMP
AGC
COMPARATOR
A 5
B 6
RF SUMMING
C 7 AMP
D 8
FOCUS ERROR
VEE 9
AMP
F 10
F I-V AMP
E 11
E I-V AMP
VCC
VC 12
VEE
TE
L 13942296513
IC201 LA6576L-TE-L
FWD 1
INPUT
2
REV
3
VCC2
4
VLO–
OUTPUT
CONTROL
5
VLO+
6
VO4+
VO4– 7
8
VO3+
VO3– 9
–
+
10
VO2+
VO2– 11
12
VO1+
VO1– 13
VCC1 14
www
15
VIN1
16
VIN1–A
.
AMP-A
–
+
VIN1+A
17
VIN1–B 18 – AMP-B
+
28
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24 VCC
23 LC/PD
22 LD ON
21 HOLD SW
20 AGCCONT
19 RF BOT
18 RFTC
COMPARATOR
17 RF I
RF EQ
16 RFO
AMP
15 RFE
14 FE
TRACKING
13 TE
ERROR
AMP
THERMAL SHUT DOWN
LEVEL
SHIFT
VIN1/VREF
LEVEL
SHIFT
5VREG
+
–
LEVEL
SHIFT
LEVEL
SHIFT
–
+
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y
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Q Q
3 6 7 1 3
S-GND
36
CH2-4
35
MUTE2
MUTE
CH1
34
MUTE1
MUTE
33
VIN4
32
VIN4–
31
VIN4+
30
VREF-IN
29 VIN1 (VREF)-SW
SWITCH
28 VREF-OUT (CH1)
27 REG-OUT
26 REG-IN
25 VIN3+
+
–
24 VIN3–
23 VIN3
22
VIN2+
+
–
21
VIN2–
20 VIN2
19 VIN1+B
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