Sony CDX-4170R Service Manual ▷ View online
– 26 –
– 27 –
CDX-4170R
4-2. BLOCK DIAGRAM
14 RF
59 CLKO
57 XLTO
56 DATA
21
PCMD
20
LRCK
22
BCK
34
XTAI
50 XRST
DIGITAL SIGNAL PROCESSOR
IC1
55 CNIN
54 SEIN
1
FOK
3
MDP
46
SCOR
47
SQSO
49
SQCK
51
SENS
52
DATA
53
XLAT
43
CLOK
35 PD1
36 PD2
39 E
38 F
31
RFO
19
CLK
20
XLT
21
DATA
RF AMP, SERVO CONTROL
IC2
OPTICAL PICK-UP
KSS-520A
37 FE BIAS
CD 5V
PD
LD
RV1
FOCUS BIAS
RV4
FOCUS GAIN
LD DRIVE
Q1,2
1
FEO
2
FEI
16
SLO
22
XRST
23
C. OUT
24
SENS
25
FOK
6
FEO
13
TAO
34 PD
33 LD
16 CH2+
15 CH2-
18 CH1+
17 CH1-
19
CH1 IN
22
CH2 IN
24
CH3 IN
TRACKING
FOCUS
3
CH4 IN
FOCUS/TRACKING COIL DRIVE,
MOTOR DRIVE
IC3
13 CH3+
14 CH3-
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
12 CH4+
11 COM
6
FWD
7
REW
4
CTL1
5
CTL2
10 CH5+
3
DI
1
LRCI
2
BCKI
4
CLK
9
DOUT
10
BCKO
11
LRCO
6
RSTN
DDBB
IC701
IC701
14
MOD1
15
MOD2
16
MOD3
6
DI
5
BCKI
8
LRCK
3
CKO
12
LO
38
L1
37
L2
36
27
16
LSIN
CL
17
DI
18
CE
TONE
L3
28
LTOUT
14
RO
R-CH
18 XTI
19 XTO
D/A CONVERTER
IC702
X701
16.9344MHz
2
DEEM
22
RSTN
62 EMPH O
21 DBCNT1
79 DBCNT2
78 DBCNT3
15 CNIN/SCOR
45 SQSI
44 SQCKO
17 SENS
20
CKO
19
SO
VOL
18
CE
74
TUNMUT
77
TEST
38
BEEP
SYSTEM CONTROL
IC501
ELECTORONIC VOLUME
IC303
POWER AMP
IC302
CNP901
4
STB
2
MODE2
3
MODE1
5
BU+B
7
VCC
6
AMP+B
8
ANT+B
POWER SUPPLY
IC901
CD 5V
M
M
M
LCD801
PL801
PL802
D313
INVERTER
Q301
Q302
STBY
MUTE
D309
63 CLK
64 DATA
61 INH
LCD DRIVE
IC801
34 CD SO
35 CD LAT
33 CD CKO
80 INTSELO
32 CD RST
1
FOK
23 LM LOD
22 LM EJ
61 LDON/CTL2
24 CD MON
25 CDON/CTL1
2
LSW
SW3
(LIMIT)
22
LFIN
1
3
5
F-L
FL+
FL-
1
9
21
LFOUT
20
LROUT
23
LSOUT
R-CH
L
-2
-1
(FRONT)
R
(LINE OUT)
10
2
39
CKO
40
SO
LCD
41
INH
11
7
9
R-L
RL+
RL-
10
2
TEST
15
AMP REM
ANT REM
6
5
BATT
ACC
F901
7
16
R-CH
R-CH
L
-4
-3
(REAR)
R
D310
D908
D909
D910
D509
D510
1
BU5V
RESET
IC902
2
MUTE
CONTROL
Q305
D805-824
LED
SWITCH
Q503, 504
POWER
CONTROL
Q704
8V REG
Q702
SCOR
SWITCH
Q506
CN/SCOR
SWITCH
Q507
CN
SWITCH
Q505
POWER
CONTROL
Q703
KEY
ACTIVE
Q508,509
BATT
DET
Q901
ACC/BATT
DET
Q902
KEY MATRIX
SW801-820
4
ILLON
69
NOSE SW
62 CE
42
CE
LAMP REG
Q501
BATT
LAMP REG
Q502
D-BASS
SW821
68
6
55
AD ON
RC IN1
RC IN0
36
ACC IN
9
COM8V
BATT
10 AM8V
11 FM8V
BU5V
COM8V
AM8V
FM8V
BATT
ACC
52
KI2
51
KEYIN0
50
KEYIN1
31
KEYAC
72
PWSEL
5
PWON
64
TUON
65
FMON
BATT
CNJ901
(REMOTE IN)
ACC
46 DSW
SW4
(DOWN)
30 SELFSW
SW2
(SELF)
3
INSW
SW1
(DISC IN)
16
BU IN
S502
(RESET)
BATT
MD8V
CD5V
5V REG
Q701
X502
8MHz
9
OSCOUT
8
OSCIN
X501
32.768kHz
12
XTOUT
14
RESET
11
XTIN
66
MUT
75
AMPMUT
76
APON
S501
(POWER SELECT)
ON
OFF
1
IN
RDSIN
RDSOUT
13
DATA
12
CLK
RDS DECODER
IC102
R-CH
R-CH
RV101
FM RDS
S-METER
X101
7.2MHz
9
10
X102
4.332MHz
57 VSM
63 SEKOUT
71 SDIN
70 ST
73 SI
RDS
26 CKI
29 CE
28 SO
28 SO
PLL
27 CKO
30 SI
30 SI
D102
S-METER
AMP
Q103
5V REG
Q104
FM 8V
RDS REG
Q102
1
AM ANT
2
FM ANT
18
S-METER
13
SEEK
19
SD
TUNER UNIT
TU101
CNJ101
(ANTENNA)
9
+B
10
AM+B
11
AM IF COUNT
20
FM IF
21
ST/MONO
22
FM DET
Signal path
: FM
: MW
: CD
: FM
: MW
: CD
8
FM+B
6
VCO
5
VT
4
LO/DX
17
FM LCH
04
15
FM RCH
12
AM DET
TU8V
FM8V
TU8V
AM8V
16
VCC
13 AM/FM IF
FM IN
AM IN
3
CE
4
D IN
PLL
IC101
15
VT
19
DX/LO
11
16
24
X IN
5
CLK
6
D OUT
1
X OUT
– 28 –
4-3. CIRCUIT BOARDS LOCATION
DISPLAY SUB board
tuner unit
DISC IN SW board
DISPLAY board
LOAD SW board
SERVO board
MAIN board
LIMIT SW board
SUB board
– 33 –
• Waveforms
(MODE:PLAY)
1
2
3
4
5
6
7
Approx. 620mVp-p
IC2
1
(FEO)
0V
IC2
#¡
(RFO)
1.2Vp-p
Approx. 200mVp-p
IC2
$™
(TEO)
0V
IC1
3
(MDP)
2.6Vp-p
7.6
µ
sec
IC1
@º
(LRCK)
5.8Vp-p
22.7
µ
sec
IC1
@™
(BCK)
5.7Vp-p
474nsec
16.89MHz
IC1
#¢
(XTAI)
3.2Vp-p
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
no mark : CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
J
: CD
– 47 –
• IC Block Diagrams
IC1 CXD2507AQ
IC3 BA6796FP-T1
XLON
SPOD
SPOC
SPOB
SPOA
CLKO
VDD
CNIN
SEIN
CLOK
XLAT
XLTO
DATO
52
53
54
55
56
57
58
59
60
61
62
63
64
51
SERVO AUTO
SEQUENCER
SEQUENCER
33
34
35
36
37
38
39
40
41
42
43
45
46
47
48
49
50
44
DATA
XRST
SENS
MUTE
SQCK
SQSO
EXCK
SBSO
SCOR
VSS
WFCK
EMPH
DOUT
C4M
FSTT
XTSL
XTAO
XTAO
XTAI
MNTO
20 21 22 23 24 25 26 27
29 30 31 32
28
LRCK
PCMD
BCLK
GTOP
XUGF
XPCK
VDD
GFS
RFCK
C2PO
XROF
MNT3
MNT1
1
2
3
4
5
6
7
8
9
9
10
11
12
16
17
18
19
13
14
15
FOK
MON
MDP
MDP
MDS
LOCK
TEST
FILO
FILI
PCO
VSS
VSS
AVSS
CLTV
AVDD
RF
BIAS
ASYI
ASYO
ASYE
WDCK
5
14
CPU
INTERFACE
SUB CODE
PROCESSOR
DIGITAL
CLV
EFM
DEMODULATOR
DIGITAL
PLL
ASYMMETRY
CORRECTOR
CORRECTOR
5
D/A
INTERFACE
ERROR
CORRECTOR
3
6
3
16K
RAM
DIGITAL
OUT
CLOCK
GENERATOR
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
OPOUT
CH4-IN
CH4
CTL1
CTL2
FWD
REV
TRAY
GND
CH3 –
CH5 –
COM
CH4 +
CH3 +
CH3-IN
CH3
VREF
CH2
CH2-IN
VCC
VCC
CH1 –
CH2 –
CH1-IN
OP IN –
CH1
CH1 +
OP IN +
CH2 +
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT
DOWN
15
16
17
18
19
20
21
22
23
24
25
26
27
28
LOGIC
CTL1
CTL2
FWD
REV
V/I
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