Ic Block Diagrams - Sony CDX-646 Service Manual

• 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
IC201 LA6576L-TE-L
FWD
1
INPUT
2
REV
3
VCC2
4
VLO–
VLO+ 5
VO4+ 6
VO4– 7
VO3+ 8
VO3– 9
VO2+ 10
VO2–
11
VO1+ 12
VO1–
13
VCC1 14
15
VIN1
VIN1–A 16
AMP-A
–
+
VIN1+A
17
VIN1–B 18 – AMP-B
+
28
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
OUTPUT
CONTROL
LEVEL
SHIFT
LEVEL
SHIFT
5VREG
+
–
–
+
LEVEL
SHIFT
LEVEL
SHIFT
–
+
36 S-GND
CH2-4
35 MUTE2
MUTE
CH1
34
MUTE1
MUTE
33
VIN4
32 VIN4–
31 VIN4+
30 VREF-IN
VIN1/VREF
29 VIN1 (VREF)-SW
SWITCH
28 VREF-OUT (CH1)
27 REG-OUT
REG-IN
26
25 VIN3+
+
–
24 VIN3–
23 VIN3
22
VIN2+
+
–
21
VIN2–
20 VIN2
19 VIN1+B