Sony CDX-4180R / CDX-4180RV Service Manual ▷ View online
4-2. BLOCK DIAGRAM — CD SECTION —
– 25 –
– 26 –
CDX-4180R
43
14
15
15
16
14 RF
59 CLKO
57 XLTO
56 DATO
56 DATO
21
PCMD
20
LRCK
22
BCK
34
XTAI
50 XRST
DIGITAL SIGNAL
PROCESSOR
IC1
55 CNIN
54 SEIN
1
FOK
3
MDP
27
GFS
46
SQSO
47
SQCK
49
SENS
51
DATA
52
XLAT
53
CLOK
SCOR
SERVO 5V
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
SERVO 5V
PD
LD
RV1
FOCUS BIAS
RV4
FOCUS GAIN
LD DRIVE
Q2
1
FEO
2
FEI
16
SLO
22
XRST
23
C. OUT
24
SENS
25
FOK
6
FEO
13
TAO
34 PD
33 LD
Q1
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
D-BASS
CONTROL
IC701
MOD1
MOD2
MOD2
DB/DS
6
DI
5
BCKI
8
LRCI
3
CLKO
12
LO
14
RO
R-CH
18 XTI
19 XTO
D/A CONVERTER
IC702
X700
16.9344MHz
2
DEEM
22
RSTN
30 DEEM
6
GFS
17 SQSI
31 DBMOD1
16 DBMOD2
16 DBMOD2
19 SQCKO
78 CD SENCE
SYSTEM CONTROL
IC801(1/2)
SERVO 5V
M
M
M
I-V
CONV.
4
DATA25
3
XLAT25
28 CLOK25
75 SCOR
5
XRSRO
2
FOK
23 C OUT
1
LD ON
57 XMODE
27 SCLK
25 SRDT
77 DQSY
115 REV
114 FWD
113 CTL2
CD 5V
REG
Q909
MD 8V
REG
Q912
MD 8V
SWITCH
Q910, 911
CD POWER
SWITCH
Q907,908
SERVO 5V
REG
Q913
120 SELF SW
117 IN SW
116 L SW
118 D SW
CD ON
32
35
MD ON
SW2
(SELF)
CD 5V
BACK UP
MD 8V
SERVO 5V
MAIN
SECTION
1
Signal path
: CD
: CD
SW3
(LIMIT)
SW1
(DISC IN)
SW4
(DOWN)
04
4-3. BLOCK DIAGRAM — MAIN SECTION —
CDX-4180R
– 27 –
– 28 –
-3
L
2
1
62
63
64
2
1
1
2
12
18
16
4
11
21
20
22
19
19
83
81
53
8
9
10
6
9
13
15
16
5
CNJ600
(ANT)
AM ANT
FM L-CH
FM R-CH
LO/DX
AM-IFC
FM-IFC
VCO
SD
ST-IND
23
FM-DET
S-METER
FM+B
TU+B
AM+B
VT
AM DET
FM ANT
TUNER UNIT
TU1
TUNER LINE SWITCH
IC404(1/2)
IC404(2/2)
R-CH
R-CH
Signal path
: FM
: MW
: CD
: FM
: MW
: CD
CD
SECTION
35
36
37
38
TONE
21
20
ELECTRONIC VOLUME
IC401
18
17
16
L4
L1
L3
L2
CL
DI
CE
FLOUT
RLOUT
SYSTEM CONTROL
IC801(2/2)
59
58
41
104
14
13
90
49
72
37
64
109
47
48
12
15
61
60
FM8V
RV801
S-METER
AM8V
D602
D601
TU 5V REG
Q601
B+ SWITCH
Q604, 605
SWITCH
Q901,902
COM+B REG
Q903
D-BASS
SWITCH
S801
ROTARY
ENCODER
RE801
TU5V
TU5V
FM8V
5
4
6
10
11
9
18
1
20
PLL
IC601
LO/DX
IFIN
AMOSC
DIN
CLK
DOUT
X OUT
X IN
FMOSC
PD
VT
CONTROL
Q611
VT
SWITCH
IC603
S-METER
BUFFER
Q801
X601
7.2MHz
76
46
43
79
106
107
BATT
CHECK
Q906
ACC DET
SWITCH
Q917, 918
BACK UP LINE
BACK UP LINE D807
D910
LCD DRIVE
IC801
CE
CLK
DATA
MUTE
Q111
MUTE
Q110
MUTE
SWITCH
Q401
U COM 5V
TU 5V
COM+B
BACK UP LINE
RESET
IC902
S900
RESET
CNP802
(REMOTE IN)
(REMOTE IN)
KEY MATRIX
LSW801-819, S802
(DISPLAY BOARD)
KEY ACTIVE
Q914,915
PL801
PL802
PL802
LAMP REG
Q802, 805
COM +8V
LSW801-819
LED801-805
TEL MUTE
SWITCH
Q916
4
5
9
10
11
6
8
8
2
3
7
POWER SUPPLY
IC901
STBY
BU5V
COM8V
COM8V
AM8V
FM8V
FM8V
PULL UP 5V
U COM 5V
COM+8V
AM8V
FM8V
MODE2
MODE1
VCC
AMP+B
ANT+B
BACK UP LINE
BACK UP LINE
ACC
CHECK
Q905
D906
F901
11
3
12
4
10
2
9
1
13
ATT
16
BATT
7
ACC
5
AMP REM
6
ANT REM
15
TEST
X1A
X0A
PLL SO
62 TU MUTE
PLL CKO
PLLSI
20
16
14
10
9
8
10
11
9
4
2
4
5
RDS DEMODULATOR
IC602
SMETER
FM-DET
AVDD
CLK
DATA
DAVN
XI
XO
MPDH
PLL SO
PLL CKO
PLLSI
SD IN
13
82
SEEK
SEEK OUT
65 AF SEEK
ST IN/MONO
S-METER
KEY IN0
BU IN
AD ON
AVRH
KEY ACK
RE0
RE1
ACC IN
TEL MUTE
KEY IN1
KEY IN2
RC IN0
RC IN1
RESET
MPDH
108 LAMP ON
LCD CKO
LCD SO
P2/S2
LCD CE
REGMOD1
REGMOD2
PW SEL
AMP MUTE
BEEP
D801
Q402
AF MUTE
AU MUTE
VOL CE
VOL SO
VOL CKO
PW ON
TEST
NOSE
12
11
5
3
9
7
POWER AMP
IC200
22 4
FL
RL
MUTE
STBY
-6
REAR
R
-5
L
-4
FRONT
R
R-CH
R-CH
PJ400
R-CH
CNP501
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
55
AMP ON 56
110
111
80
95
40
SW801
(POWER SELECT)
OFF
ON
04
BACK UP
D918
D919
LINE OUT
+
92
93
X800
4.19MHz
X602
4.332MHz
X0
X1
73
74
X801
32.768kHz
AM 8V
Q610
8
6
9
1
13
2
MUTE
Q607
MUTE
SWITCH
Q701
1
7
3
HPF
2
6
5
HPF
LCD801
– 29 –
4-4. CIRCUIT BOARDS LOCATION
tuner unit
(TU1)
(TU1)
DISC IN SW board
DISPLAY board
LOAD SW board
SERVO board
MAIN board
LIMIT SW board
SUB board
– 30 –
Note on Schematic Diagram:
• 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
• 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
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