Sony CDX-C90R Service Manual ▷ View online
– 61 –
CDX-C90R
3-18. PRINTED WIRING BOARD — EL SECTION —
3-19. SCHEMATIC DIAGRAM — EL SECTION —
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
no mark : FM
Note:
• X
• X
: parts extracted from the component side.
•
r
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
(Page 56)
(Page 52)
– 62 –
3-20. PRINTED WIRING BOARD — SENSOR SECTION —
3-21. SCHEMATIC DIAGRAM — SENSOR SECTION —
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
U
: B+ Line.
Note:
• X
• X
: parts extracted from the component side.
•
r
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
(Page 60)
(Page 49)
– 63 –
+
–
–
+
–
–
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
– 64 –
+
–
+
–
+
–
–
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
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