Sony CDX-C8850R Service Manual ▷ View online
37
37
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
63
46
14
GRST
SCK
25
RFCK
21
GTOP
5
RFCK
6
GTOP
DATA
BCK
LRCK
DRAM
IC4
A0-A9
D1-D4
MCK
14
XTAI
LRCK
BCK
DATA
EMPH
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
59
61
52
BUS SI
BUS ON
CD CKO
CE
51
8
60
30
RESET
BU IN
LNK OFF
BUS CLK
5
•
9
|
12
•
14
|
18
1
•
2
•
24
•
25
SWITCH
Q1, 5
MD ON
CD ON
BU5V
SWITCH
Q2, 4
MD5V
VC
BUS SI
BUS ON
RESET
BU IN
LINK OFF
BUS CLK
53
BUS SO
BUS SO
DISPLAY SECTION
2
Signal path
: CD
: CD
TUNER
SECTION
SECTION
1
04
TUNER SECTION
3
DISPLAY SECTION
4
4-2. BLOCK DIAGRAM — CD SECTION —
CDX-C8850R
(Page 39)
(Page 39)
(Page 38)
(Page 38)
38
38
RES
RST
BATT
CLK
DATA
BUS ON
BUIN
BUS ON
LINK OFF
BUS ON
BUS CLK
BUS SI
BU IN
RESET
BUS SO
CLK
IN
DATA
IN
DATA
OUT
2
13
3
10
4
11
1
12
6
9
8
BUS INTERFACE
IC271
RST
DSP CK
SYS RST
90
SIRCS
KEY IN0
KEY IN1
6
UNI SO
BUS ON
21
24
7
UNI SI
UNI CK
20
47
22
BU IN
BOOT
77
76
19
DSP SI 17
SPLAT 78
LCD ANG 41
DOOR IND 95
PWM 65
SHIFT 72
48
AD ON
KEY ACK
107
64
NOSE SW
DOOR SW
RX/FLS SI
115
12
TX/FLS SO 13
SYSTEM CONTROL
IC500 (2/2)
BUS ON
SWITCH
Q272
RESET
IC506
5
6
4
2
3
1
7
8
CN271
(BUS CONTROL IN)
D276
D275
BATT
CD
SECTION
2
Q275
Q273
1
2
RESET
IC702
7
3
6
BU5V
IR
RECEIVER
IC910
KEY MATRIX
LSW701,
LSW900-918
S900
1
S703
RESET
109
60 RC IN1
49 RC IN0
RE IN0
RE IN1
KEY
ACTIVE
Q523
1
2
ROTARY
ENCODER
RE900
S500
(NOSE DET)
CNJ272
(REMOTE IN)
3A
1Y
2A
Q274
38
98
101
49
81
69
85
86
57
54
62
60
52
63
61
33
97
DSPLAT
SP SI
SP CK
TX/FLSSO
ILL ON
45
TIT IND
LCD CEO
P ON
66
LCD INH
70
LCD CE1
60
LCD DATA
64
LCD CLK
RX
DOOW SW
BOOT
EXTAL
XTAL
RES
UNI SO
UNI SI
UNI SCK
BU IN
DATA
CSK
CE1
0E
VLCD
VLC1
VLC2
VLC3
BUS ON
X701
18.432MHz
11
16
17
18
19
9
8
7
LCD DRIVER
IC920
DISPLAY CONTROL
IC701
LCD CLK
LCD INH
LCD DATA
LCD CE0
VLCD
VLC1
VLC2
VLC3
19
11
10
9
8
18
17
14
VLC4
VLC5
7
6
LCD DRIVER
IC900
IC921
3
GREEN 1
LIQUID CRYSTAL
DISPLAY PANEL
LCD900
POWER
CONTROL
Q904
AMBER/GREEN
SELECT
Q900, 903
AMBER 2
AMBER/GREEN
SELECT
Q901, 902
DIMMER 4
LED
DRIVE
Q971, 972
LCD10V
10V
10V
LCD10V
LCVD10V
POWER
CONTROL
Q251
BATT
POWER
CONTROL
Q252
POWER
CONTROL
Q253, 256
POWER
CONTROL
Q423, 424
VOLTAGE
CHECK
IC421
REG
Q884
PWM
CONTROL
IC871
POWER
Q881
REG
CONTROL
Q421, 422
POWER
CONTROL
Q887
LCD CONTRAST
ADJUST
Q254, 255
BATT
BATT
POWER
CONTROL
Q886 (2/2)
POWER
CONTROL
Q886 (1/2)
SHIFT
DRIVER
Q890
PU5V
BU5V
10V
MD ON
S8V
VDD5V
REG
Q885
REG
Q882, 883
REG
Q888
MD5V
BATT
BATT
CD
SECTION
4
04
OVER-VOLT
CHECK
Q271
BATT
4-3. BLOCK DIAGRAM — DISPLAY SECTION —
CDX-C8850R
(Page 37)
(Page 37)
39
39
MUTE
DRIVE
Q751
TIR PLAY
SW
Q754
WIDE/NARROW
SELECT
Q131,132
S-METER
Q133
ILL CHECK
Q431
X500
3.58MHz
X501
32.768kHz
X151
10.25MHz
04
Signal path
: FM
: MW
: CD
: MIC
: FM
: MW
: CD
: MIC
R-CH
9
10 AM+B
+B
8
16
FM+B
FM R-CH
18
FM L-CH
12
AM DET
13
SEEK
20
SD
22
ST/MONO
24
FORCED
19
S-METER
4
LO/DX
23
FM DET
5
VT
6
VCO
15
RDS
11
AMIF
21
FMIF
2 FM ANT
1 AM ANT
FM8V
(ANTENNA)
TUNER UNIT
TU101
15 FMIF
14
16
AMIF
SSTOP
12
SCL
10
OSCO
9
OSCI
24 FM IN
25 AM IN
28 LPOUT
13
SDA
5 LO/DX
16 MPX
PLL
IC151
5
BUSY
1–4
D0–D3
11
CE1
35
PDOWN
53
RESET
54
WR
55
RD
56
CE2
48 XT
44 DI/O
39 SADX
36 SAS
37 TAS
40 CS1
46 WE
44 DI/O
39 SADX
36 SAS
37 TAS
40 CS1
46 WE
47 XT
18
AOUT
26 LIN
TIR CONTROL
IC951
23
29 ST/MONO
SD IN
31
32 NARROW
46 VSM
92 XO
93 X1
70 SDA
71 SCL
71 SCL
85
61
52 QUALITY
116 NS MASK
120 SSTOP
WIDE
18
DSP SO
59
81
EMPH
19
DSP CK
58
VOL CLK
56
VOL DATA L
57
VOL DATA R
98
AMP STBY
25
CSV SI
26
CSV SO
27
CSV VCK
62
POW ON
16
CSV ON
36
MUTE
96
DSPON
15
BEEP
73
X1A
74
X0A
84
TUON
83
TELMUTE
114
FM ON
110
CSV REQ
111
CSV CE
79
DSP REDY
17
DSP SI
40 ASEL1
37 ASEL0
37 ASEL0
118 AFMUTE
117 SEEK
69
10
CD/MD ON
SYSTEM CONTROL
IC500 (1/2)
20
18
16
14
8 9
AUDIO SELECTOR
IC771
TU8V
ILL
ACC
AM8V
R-CH
Q752
Q753
AM/TIR
SELECTOR
IC752
CD ON
CNP601
BUS AUDIO IN
-5
L
-6
R
2
1
6
7
IC351
Q631
IC601
IC603
Q601
ACC CHECK
Q441
ACC IN
3 TIR BUSY
TIR D0-D3
106 TIR CE0
4 TIR PDOWN
5 TIR RST
5 TIR RST
104 TIR WR
103 TIR RD
105 TIR CE1
103 TIR RD
105 TIR CE1
69 RDS DAVN
53 MPT
ILL IN
TIR PLAY
D431
AMP MUTE
Q471
REG
Q841
REG
IC402
REG
IC403
POWER
CONTROL
Q461,462
MUTE
DRIVE
Q472-474
CSV MIX
IC691
CSV PLAY
SW
Q691
D491
D441
BZ500
DSPXLAT
ROMCONT
LAT
28
DSP RST
9
DSP STP
30
DSP XMST
55
VOL LOAD
11
CSV PLAY
112
CSV RST
IC352
LINE OUT
FRONT
FRONT
REAR
REAR
-1
L
-3
L
-2
R
-4
R
12
11
7
9
4
STBY
22
MUTE
3
5
1
9
2
10
14
7
16
6
5
13
ACC
ILL
TEL MUTE
F901
BATT
R-CH
RR
FR
RL
FL
-2
R
-1
L
SUB OUT
R-CH
R-CH
R-CH
POWER AMP
IC481
7
2
12
13
LINE AMP
IC604
CNP401
FL+
FL-
RL+
RL-
ILL
ACC
ATT
BATT
ANT REM
AMP REM
ANT REM
AMP REM
CNP601
INFL
INRL
OUTFL
OUTRL
2
4
20
6
ELECTRONIC
VOLUME (Lch)
IC602
IN1
IN2
OUT1
OUT2
58
63 62
RST
57
CKSTP
82
XMST
77
L/S
10
35
43
29
DSP
IC300
71 S1I
LIN
BFOT
RVDT
61
TRDT
60
REDY
59
SCK
11
DIN
9
CLK
2
18
20
16
ELECTRONIC
VOLUME (Rch)
IC632
IN3
4 IN1
IN2
OUT3
OUT2
6
OUT1
L/S
10 11
DIN
9
CLK
36
50
48
CSV CONTROL
IC801
AN1
XO1
XI1
35 REQ
DI
38
37 CE
DO
21
39 CLK
RST
DAC
57-64
D0-D7
1-8,11-18
A0-A15
20 26
19
XTLO
RL
27
41
XTLI
40
BCK
75
LRCK
76
FL
SUB OUT
9V
10V
10V
CSV5V
(A)
9V
TU8V
BATT
POWER
CONTROL
Q402,463
REG
IC404
REG
IC401,Q401
VDD5V
D3.3V
A3.3V
BUZZER
DRIVE
Q504
AM POWER
CONTROL
Q180,181
TU8V
AM8V
REG
Q185
TU8V
TU5V
FM POWER
CONTROL
Q182,183
TU8V
AM8V
9
8
3
1
IC351
MIC AMP
IC841
12
11
AMP
IC131
BUFFER
Q130
2
7
2
4
1
2
3
5
6
BCK
LRCK
DATA
MCK
EMPH
X300
16.9344MHz
5
7
3
1
5
7
IC663
5
7
IC661
5
7
IC843
1
3
FR
RR
FR
RR
R-CH
CNJ252
(MIC IN)
Q451
POWER
CONTROL
Q801,802
VOICE
MEMORY
IC805
CSV PROGRAM
ROM
IC803
SELECTOR
IC804
ADDRESS
DECODER
DECODER
IC802
BU5V
CSV5V(D)
X801
14.318MHz
1
3
POWER
CONTROL
Q901
TU5V
RDS5V
R-CH
99–102
X951
4.19MHz
8
DIN
12
DOUT
17
SAD
16
SAS
15
TAS
14
CS
13
WE
MEMORY
IC951
8
DAVN
2
MPTH
5 OSCI
4 OSCO
10
SCL
9
SDA
20 LVIN
16 MPX
RDS DEMODULATOR
IC901
X904
4.332MHz
Q134
RV131
FM RDS
S-METER
CD
SECTION
CD
SECTION
4-4. BLOCK DIAGRAM — TUNER SECTION —
CDX-C8850R
(Page 37)
(Page 37)
40
40
DISC IN SW board
LOAD SW board
tuner unit
(TU101)
(TU101)
SUB board
LIMIT SW board
SERVO board
MAIN board
RELAY board
POWER board
DISPLAY board
4-5. CIRCUIT BOARDS LOCATION
For schematic diagrams
• All capacitors are in µF unless otherwise noted. pF: µµF
• 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.
•
%
: indicates tolerance.
•
¢
: internal component.
•
C
: panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: MW
J
: CD
L
: MIC
• Abbreviation
TYPE A : ENGLISH, FRENCH
TYPE B : ENGLISH, SPANISH
TYPE C : ENGLISH, GERMAN
TYPE B : ENGLISH, SPANISH
TYPE C : ENGLISH, GERMAN
For printed wiring boards
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
®
: Through hole.
•
¢
: internal component.
• 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)
(Side A)
parts face are indicated.
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
• Waveforms
(MODE:PLAY)
1
2
3
4
5
6
7
Approx. 620mVp-p
IC1
!§
(FE)
0V
IC1
!¶
(RFO)
1.2Vp-p
Approx. 200mVp-p
IC1
!¢
(TE)
0V
IC501
&ª
(MDP)
2.6Vp-p
7.6
µ
sec
IC501
*¶
(LRCK)
5.8Vp-p
22.7
µ
sec
IC501
(¡
(BCK)
5.7Vp-p
474nsec
16.89MHz
IC501
`⁄‚‹
(XTAI)
3.2Vp-p
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