Sony CDX-C880 Service Manual ▷ View online
DISC IN SW board
LOAD SW board
tuner unit
(TU10)
(TU10)
SUB board
LIMIT SW board
SERVO board
MAIN board
RELAY board
KEY board
CSV board
– 37 –
– 38 –
Pin No.
Pin Name
I/O
Pin Description
112, 113
NC
—
Not used in this set.
114
MD
O
CD serial data output
115
MC
O
CD serial clock output
116
ML
O
CD serial latch output
117
CSV-NAR
I
Audio composition request signal input
118
LEDON
O
Front panel LED control output
119
VSS
—
GND
120
POWON
O
System power control output
4-2. CIRCUIT BOARDS LOCATION
4-3. BLOCK DIAGRAM — CD SECTION —
– 39 –
– 40 –
CDX-C880
59 RFDC
55 FE
57 TE
80 SSTP
89
PCMD
87
LRCK
85
WDCK
91
BCK
DIGITAL SERVO/
DIGITAL SIGNAL PROCESSOR
IC501
71 TFDR
72 TRDR
72 TRDR
73 FFDR
74 FRDR
69 SFDR
70 SRDR
79 MDP
3
PD1
4
PD2
7
E
6
F
17
RFO
16
FE
14
TE
CD5V
RF AMP, LD-APC ERROR AMP
IC1
OPTICAL PICK-UP
KSS-521A
2
PD
PD
LD
LD DRIVE
Q3
1
LD
19
LD ON
2
TR+
1
TR-
14 F+
13 F-
23
OP+
24
OP-
10
OP+
TRACKING
FOCUS
11
OP-
9
MUTE
20
OP+
19
OP-
OP IN+
OP IN-
TRACKING/FOCUS COIL DRIVE,
SLED MOTOR DRIVE
IC7
SPINDLE MOTOR DRIVE
IC601
16 S+
17 S-
M902
(SLED)
12 SRDT
3
SCOR
5
MCK
1
EXCK
2
SBSO
4
WFCK
EEPROM
IC551
11 SCLK
13 DQSY
9
DATI
10 LRCI
11 WDCI
7
BCKI
16
15
17
17
DRAM CONTROLLER
IC2
20
|
23
•
25
•
34
|
38
33
XOE
32
XCAS
27
XWE
26
XRAS
A0-A9
D1-D4
45
SDTI
84
C4M
33
DOUT
28
SCOR
27
XROF
3
C4M
2
7
1
2
2
3
4
5
5
6
1
2
3
4
5
6
8
9
10
11
12
13
14
7
8
8
9
10
11
12
13
14
DIN
59 SCOR
4
XROI
20
WFCK
7
EXCK
6
SBSO
8
SQCK
CLOK
9
SQSO
1
WFCK
42 XWRE
43 WRDE
44 XLT
10
SENS
11
SCLK
24
GFS
37
FOK
47 XSOE
48 SDTO
57 XQOK
58 GSCR
12
DATA
14
GRST
SCK
25
RFCK
21
GTOP
5
RFCK
6
GTOP
DRAM
IC4
A0-A9
D1-D4
14
XTAI
LRCK
BCK
DATA
4
XRAS
3
XWE
23 XCAS
22 XOE
M
12 DROUT+
13 DROUT-
M901
(SPINDLE)
25
24
M
M903
(LOADING)
M
INVERTER
9
L+
7
L-
2
LMOT1
4
LMOT2
LOADING MOTOR
DRIVE
IC6
X1
10MHz
TX
SW4
(DOWN)
SW3
(LIMIT)
SW1
(DISC IN)
SW2
(SELF)
28
|
31
67 CD DATA
42 SCLK
54 FOK
55 GFS
16
43
44
44
CD SYSTEM CONTROL
IC5
57 SENS
65 SCK 2
66 SI 2
20 LD ON
62 IN SW
63 SELF SW
14 LM EJ
15 LM LOM
31 X IN
32 X OUT
17 CDMON
18 CD ON
9
DRV OE
10 D SW
45
GRSRST
ESPSDT
ESPXQOK
EMPH O
46
68
69
69
70
ESPXLT
ESPXRDE
ESPXWRE
GRSCOR
71
56
48
48
49
DATA
CLK
SCOR
ESPXSOE
64
19
59
61
52
BUS SI
BUS ON
AMUT
CD CKO
CE
51
60
30
RESET
BU IN
BUS CLK
5
•
9
|
12
•
14
|
18
1
•
2
•
24
•
25
8
LINK OFF
LINK OFF
21
CD RST
VC
BUS SI
BUS ON
AATT
EMPH
RESET
BU IN
BUS CLK
53
BUS SO
BUS SO
3
Signal path
: CD
: CD
04
63
46
XRST 15
XRST
64
26
MD
MD
2
27
MC
MC
28
ML
ML
2
DATA
3
BCK
1
LRCK
16
VOUTL
CD L-CH
13
VOUTR
R-CH
1
LINE AMP
IC403
3
D/A CONVERTER
IC401
X401
16.9344MHz
5
XTI
6
XTO
4
CLKO
22 RST
MD
CONTROL
Q402, 403
5V REG
Q401
CD
CONTROL
Q404, 405
SWITCH
Q1, 5
BATT
MD 5V
D/A 5V
SERVO 8V
BU 5V
SWITCH
Q2, 4
5V REG
IC404
MD 5V
1
MAIN
SECTION
MAIN
SECTION
DISPLAY
SECTION
SECTION
4-4. BLOCK DIAGRAM — MAIN SECTION —
– 41 –
– 42 –
33
32
MUTE
CONTROL
Q205, 206
ACC
CHECK
Q608
BU
CHECK
IC604
BEEP
DRIVE
Q502
MUTE
CONTROL
Q211
VOL
CONTROL
Q203
67
CKO
66
SO
64
VOLCE
68
SUBCE
61
SW1
62
SW0
118
LEDON
81
ACCIN
78
ILLIN
79
TELMUTE
58
TESTIN
15
BEEP
55
1
2
RAMBU
120
POWON
SUB
VOL/
SUB
R
L
FRONT
-1
-2
CN201
CN201
21 16 22
11
14
13
20
12
11
7
9
4
15
9 10
9 8 7
26
25
23
7
24
CLK
DATA
CE
PDOWN
RES
CE
B A
SWITCH (SUB)
IC201
CLK
DATA
CE
ELECTRONIC VOLUME (SUB)
IC204
ELECTRONIC VOLUME
IC202
12
D201
7
1
3
LINE DRIVER (SUB)
IC205
2
12
13
SW201
(LINE OUT/IN)
OUT IN
Q201
Q207
Q208
LINE DRIVER
IC207
REO1
FNTO1
Q214
Q215
GND
ISOLATION
IC209
GND ISOLATION
IC210
STBY
22
MUTE
3
5
1
9
2
10
5
14
13
15
7
16
6
AMP+B
BATT
BU5V
ILL
CHECK
Q604
ACC
D607
D602
6
FM-ON
7
4
3
2
TU-ON
REG
IC603
3
1
BATT
BZ501
BEEP
SW502
(POWER SELECT)
MODE2
MODE1
STB
9
8
COM8V
ANT+B
6
AMP+B
ANT+B
7
VCC
10 AM8V
11 FM8V
COM8V
AM8V
FM8V
AMP+B
POWER SUPPLY
IC602
ACC
F901
BATT
Q622
BU5V
R-CH
R
L
REAR
-3
-4
R-CH
R
L
EQ OUT
-1
-2
R-CH
CN202
CN203
R
L
SUB OUT
-1
-2
R-CH
LINE
OUT/IN
POWER AMP
IC211
CN601
FL+
FL-
RL+
RL-
AMP REM
ILL
ATT
TEST
ACC
BATT
ANT REM
1
13
1
13
SYSTEM CONTROL
IC501 (1/2)
LPF
Q51
FM 8V
AM 8V
D12
L-OUT
R-OUT
S-METER
SD
ST-IND
AM-IFCOUT
FM-IFCOUT
VCO (FM/AM)
VT (FM/AM)
LO/DX
RECEIVE/SEEK
TUNER UNIT
TU10
18
16
AM-DET.OUT 12
19
53
60
5
13
20
22
22
11
21
21
6
5
4
13
39
41
40
42
CN201
BUS AUDIO
IN
R-CH
X10
7.2MHz
SI
ST-MONO
SD-IN
VSM
TUNMUTE
SO
PLL
CKO
CE
CE
TIR
Q17
R-CH
R-CH
CD SECTION
CD L-CH
16
9
15
IF.IN
AM.OSC
AM.OSC
FM.OSC
PD
LO/DX
SEKOUT
XI
XO
D.OUT
NARROW
D.IN
CLK
CE
1
20
6
5
4
2
PLL
IC10
25
26
27
26
27
28
7
MUTE 65
8.5V REG
Q12
5V REG
Q11
TU 8.5V
FM-ANT
AM-ANT
FM+B
+B (FM/AM)
AM+B
1
2
8
9
10
WIDE/
NARROW 24
1
DISPLAY SECTION
S-OUT
4
(ANTENNA)
04
Signal Path
: FM
: AM
: CD
TIRPLAY
MUTE
DRIVE
Q19
2
1
TIR/AM/CSV SWITCH
IC104
7
6
3
5
WIDE
3
Q15
Q16
Q102
Q103
IC11
ANT+B
TU 5V
98
99
CE
RES
PDOWN
18
NARROW
CONTROL
Q14
L-CH
R-CH
-5
-6
40
4
1
30
LOCNTR
BBE
PRCSS
8 9 10
TONE
31
VOL
4
12
3
11
R-CH
FR+
FR–
RR+
RR–
BYPASS/BOOST
ENHANSMENT
IC301
14
20
VCT
VREF (L)
VREF (R)
REF VOLTAGE
IC206
5
7
3
1
17
56
POWSEL
51
DSTSEL2
57
EQ-SEL
E model
FM200k
AM10k
FM50k
AM9k
ON
OFF
SW501
FREQUENCY
SELECT
SW201
(LINE OUT/IN)
IN OUT
15
PDOWN
RES
CE
116
114
115
109
A-MUTE
ML
MD
MC
ML
AATT
MD
MC
110
EMPH
EMPH
2
CD
SECTION
100
CDX-C880
4-5. BLOCK DIAGRAM — DISPLAY SECTION —
– 43 –
– 44 –
7
8
1
2
3
4
5
6
4
3
2
1
2
1
9
8
12
6
3
CD
SECTION
DATA IN
11
CLK IN
13
RESET
DATA OUT
BUS ON
10
18
17
10
24
59
19
11
90
13
14
16
18
17
19
6
7
1
8
9
92
93
73
74
10
11
77
BU IN
DATA
BUSON
CLK
BATT
RST
BUS INTERFACE
IC505
BACK-UP
CHECK
Q504
IR
RECEIVER
IC901
CN501
(BUS CONTROL IN)
Q501
1
SYSRST
RST
BU IN
CKI
SO
UNI
SI
BUSON
SIRCS
DOOIND
SO
CKO
LCD
CE
XO
XI
X1A
X0A
49
DSTSEL0
20
DATA
21
SO
22
CKO
23
CE
NAR
9
RST
41
LCDANG
BATT
D509
BU IN
LINK OFF
BUS CLK
BUS SI
BUS ON
RESET
BUS SO
RESET
IC601
BU5V
SW801
RESET
D501
BATT
D507
LED
CONTROL
Q624, 625
BATT
LED802-804
J801
(REMOTE IN)
CSV
DATA
CLK
LCD
CE
32
14
INH
INH
VLC5
VLC4
VLC3
VLC2
VLC1
VLC0
GREEN
COLOR
SELECT
Q900, 902
2
AMBER
COLOR
SELECT
Q901, 903
LCD900
X501
3.6864MHz
X502
32.768MHz
LCD ANGLE
CONTROL
Q621, 623
ILL
CONTROL
Q617, 619
ILL
CONTROL
Q626, 627
LED
CONTROL
Q611, 612
29
ILL-ON
118
117
LEDON
30
DIMMER
BATT
BATT
SYSTEM CONTROL
IC501 (2/2)
LCD DRIVE
IC900
04
Q503
X901
14.31818MHz
D819
D814
KEYIN0
KEYIN1
KEYIN1
AD ON
KEYACK
35
76
RC-IN1
72
RC-IN0
48
37
36
RE-IN1
RE-IN0
CSV CONTROLLER
IC901
XO 1
XI 1
19
20
EN900
ROTARY
ENCODER
Q508
IC907(1/2)
IC909
31
A16
42
RDC
A17
A0
A15
10
CSV SRAM
IC903
RDD 44
A16
IC907(2/2)
30
A17
26
6 A17
IC908
32 OE
57
64
1
8
11
18
D0
D7
A0
A15
21
23
25
25
29
1
5
11
20
31
31
D0
D7
D0–D7
A0-A15
46
47
47
LSW901-909,912–918,
S900,SW803
D821
KET ACTIVE
SW
Q801, 802
EL INVERTER DRIVE
IC550,Q553–556
12
DOORSW
Q557
FRONT
PANEL
PANEL
(NOSE SWITCH)
Q552
DC +B
DC +B
ELECTRONIC
LUMINESCENT LIGHT
EL900
80
NOSESW
SW802
(NOSE DET)
38 DO
36 DI
39 CLK
37 CE
REQ
21 RST
35
B+ SWITCH
Q901,902
CSV 3.3V
BU5V
CSV AMP
IC906
5
7
ADC/
DAC
48
DAC
MAIN SECTION
S-OUT
4
CDX-C880
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