Sony CDX-C90 Service Manual ▷ View online
– 91 –
+
–
–
+
–
–
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
• IC Block Diagrams
IC1 CXA1791N-T4 (SERVO BOARD)
IC6 LB1638MTP-T1
IC2 CXD2522R-T6
IC551 LC89170M-TLM
1
2
3
4
5
6
7
14
13
12
11
10
9
8
TIMING
&
SYNCHRONIZATION
SIGNAL
PROTECTION
32 WORD X 8 BIT
DUAL PORT RAM
DUAL PORT RAM
CRC
CHECKER
CPU INTERFACE
VDD
VDD
DQSY
SRDT
SCLK
SW2
SW1
TEST
EXCK
SBSO
SCOR
WFCK
MCK
XMODE
GND
– 92 –
+
–
+
–
+
–
–
1
OPOUT
20
GND
25
OPIN–
24
OPIN+
2
NC
3
NC
4
BIAS
5
DRIN'
6
DRIN
23
NC
22
MUTE
21
NC
DRIVER
MUTE
7
NC
8
NC
9
NC
10
NC
11
NC
12
D
ROUT–
+
–
13
D
ROUT+
LEVEL SHIFT
IN
+
–
THERMAL
SHUT DOWN
19
GND
14
NC
18
NC
16
NC
15
NC
VCC
17
WRITE
CLOCK
CLOCK
GENERATOR
DATA INPUT
BUFFER
DATA OUTPUT
BUFFER
COLUMN
DECODER
SENSE AMP
I/O GATE
4M BIT
MEMORY
CELL
ROW
DECODER
ADDRESS
BUFFER
PRE-
DECODER
REFRESH
ADDRESS
COUNTER
COUNTER
BOARD
BIAS
GENERATOR
MODE
CONTROL
CLOCK
GENERATOR
1
CLOCK
GENERATOR
2
18
24
25
26
17
16
15
14
5
4
1
2
3
9
10
11
12
13
23
22
DQ1
DQ2
WE
RAS
A9
A0
A1
A0
A1
A2
A3
VCC
VSS
DQ4
DQ3
DQ3
CAS
OE
A8
A7
A6
A5
A4
A4
1
2
3
4
5
6
7
8
9 10 11
12
13
14
OUT1-A
OUT1-B
PRE-
OUT1
IN1 (–)
IN1 (+)
REG-B
REG-
OUT
BIAS-
IN
MUTE
IN2 (–)
IN2 (+)
PRE-
OUT2
OUT2-B
OUT2-A
IN4 (–)
PRE-
OUT4
IN4 (+)
VCC
VCC
OUT3-B
GND
IN3(–)
GND
IN3(+)
PRE-
OUT3
OUT4-A
OUT4-B
OUT3-A
15
16
17
18
19
20
21
VCC
VCC
22
23
24
25
26
27
28
LEVEL
LEVEL
IN
IN
+
–
+
–
SHIFT
SHIFT
LEVEL
SHIFT
IN
+
–
LEVEL
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
SHIFT
IN
+
–
IC4 MB814400C-70PFTN (SERVO BOARD)
IC601 BA6195FP-YT2
IC7 BA6797FP-E2
– 93 –
3rd order
NOISE
SHAPER
S / P
TIMING
CIRCUIT
CLOCK
GENERATOR
DATA SELECT
DATA SELECT
P/S CONVERT
&
D/F-CLK GEN.
4BIT DATA
BITSTREAM
"0" DETECT
MUTE
CIRCUIT
OR
3rd order
NOISE
SHAPER
L . I . P.
ATT
x 0.75
L . I . P.
ATT
x 0.75
DITHER
OVERFLOW DETECTOR
FIR 4
MODE
INAF
OVFLAG
MUTER
MUTEL
MTPOL
DRPOL
MODE
NC
DFDTOR
DFLRCKO
TEST4
TEST3
VSS
IF SELD
IF SELC
NC
SBCKI
SDATAR
SDATAL
NC
DFDTOL
DFBCKO
DFDTEN
TEST1
TEST2
VSS
PLMG2
VDD
NSDOL4
NSDOL3
NSDOL2
NSDOL1
NC
NC
VDD
VDD
NC
64FSI
NSDOR1
NSDOR2
NSDOR3
NSDOR4
MCKIN
VDD
PLMG1
NRGCLR
SYSM
LATCH
SHIFT
ATT
INIT
LRCKI
DATAI
BCKI
VSS
VSS
NC
INVO2
INVO1
INVI
NC
128FSO
CKVDD
DINIT
52
53
54
55
56
57
58
59
60
61
62
63
64
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
32
31
30
29
28
27
26
25
24
23
22
21
20
FIR 2
FIR 1
FIR 3
ATT
IIR
OVERFLOW DETECTOR
FIR 4
FIR 2
FIR 1
FIR 3
ATT
IIR
POLALITY
2
+
–
+
–
–
MUX
MUX
1
2
2
3
4
5
5
6
7
8
9
10
16
15
14
13
12
11
AINL
AGNDL
AOUTL
VA–
VA+
AOUTR
AGNDR
AINR
8
8
8
8
8
16
ZCEN
CS
SDATAI
VD+
DGND
SCLK
SDATAO
MUTE
CONTROL
REGISTER
SERIAL
PARALLEL
REGISTER
IC1 CXD8679Q (MAIN BOARD)
IC103, 104 CS3310-KSR
IC3, 4 PCM1702U-J (MAIN BOARD)
BALANCED
CURRENT
SEGMENT
SEGMENT
DAC A
BALANCED
CURRENT
SEGMENT
SEGMENT
DAC B
BY-POLR
OFFSET
CIRCUIT
REFERENCE
&
SERVO CIRCUIT
INPUT
INTERFACE
&
SINE CONVERTER
CIRCUIT
1
DATA
2
CLOCK
3
NC
4
+VDD
5
D.COM
6
–VDD
7
L.E
8
NC
9
NC
10
NC
20 –VCC
19 REF DC
18 NC
17 SERVO DC
16 A.COM
15 A.COM
14 I OUT
13 NC
12 BPO DC
11 +VCC
Click on the first or last page to see other CDX-C90 service manuals if exist.