Read Sony CDX-C680 / CDX-C780 Service Manual online
– 67 –
• IC Block Diagrams
IC1 CXA1791N-T4
+
–
–
+
–
–
APC
PD AMP
APC
LD AMP
VREF
1.25V
1
LD
2
PD
VC
–
+
+
RF
IV AMP1
3
PD1
VC
VC
–
+
+
RF
IV AMP2
4
PD2
VC
VC
–
+
+
RF
SUMMING AMP
VC
–
+
+
FOCUS
ERROR AMP
18 RFI
19 APC ON
20 VCC
VCC
17 RFO
16 FE
15 FE BIAS
–
+
+
F
IV AMP
6
F
VC
VC
–
+
+
TRACKING
ERROR AMP
14 TE
VC
5
GND
–
+
+
E
IV AMP
7
E
VC
13 EI
12 EO
VC
8
VR
VC
10
NC
11 NC
VC
9
–
+
VCC
VC BUFFER
1
2
3
4
5
6
7
8
9
10
GND
IN1
VCC
IN2
GND
N.C.
OUT2
VS
OUT1
N.C.
CONTROL LOGIC
SDTO
XSOE
SCK
SDTI
XLT
XRDE
XWRE
OSCE
A5
A6
A7
SPSL
VSS
35
36
A8
XOE
33
34
37
39
A4
38
40
41
42
43
44
45
46
47
48
32
20
21
22
23
25
26
27
29
30
31
24
XCAS
D4
D3
D0
28 D1
XWE
XRAS
XRAS
A9
VDD
A0
A1
A2
A3
17
18
19 C176
DOUT
LRCK
4
5 6
7 8 9 10 11
13
14
15 16
12
XROI
RFCK
GTOP
1
2 3
WFCK
DIN
C4M
BCKI
VSS
DATI
LRCI
WDCI
XTAO
TEST
XTAI
BCK
DATA
49
50
51
52
52
53
54
55
54
55
56
57
61
62
63
64
58
59
60
60
XEMP
XWIH
AM4
AM3
AM2
AM1
AM0
AM0
VDD
XQOK
GSCR
SCOR
SCOR
NC
NC
NC
NC
GRST
XRST
DRAM
I/F
SELECTOR
TIMING
GEN.
DAC
I/F
DIGITAL
OUT
CPU I/F
ADDRESS MONITOR
VWA
READ
BASE
COUNTER
WRITE
BASE
COUNTER
DATA
LINKING
CONTROL
DSP
I/F
IC6 LB1638MTP-T1
IC2 CXD2522R-T6
Click on the first or last page to see other CDX-C680 / CDX-C780 service manuals if exist.