Sony CDX-4270R Service Manual ▷ View online
37
SE3L
SE3R
MUTE
SDA
SCL
PAUSE
OUT FL
OUT FR
OUT RL
OUT RR
SUBOUT+
SUBOUT–
VDD
GND
CREF
SE1L
SE1R
MD+
MD–
CDL+
CDL–
CDR–
CDR+
PDR
PDGND
PDL
SE2L
SE2R
INPUT
GAIN &
AUTO
ZERO
ZERO
PAUSE
DETECT
INPUT MUL
TIPLEXER &
MIXING ST
AGE
REAR SIDE
SELECTOR
FRONT SIDE
SELECTOR
LOUDNESS
CONTROL
CIRCUIT
INPUT
GAIN
BEEP
LOUDNESS
CONTROL
CIRCUIT
SOFT
MUTE
VOLUME
CONTROL
CIRCUIT
COMPANDER
TREBLE/
BASS
CONTROL
CIRCUIT
SUBWOOFER
OUT
FADER
SUBWOOFER
LP
IIC
BUS
DIGITAL CONTROL CIRCUIT
POWER
SUPPLY
FRONT
FADER
FRONT
FADER
REAR
FADER
REAR
FADER
VOICE BANDPASS
HP
LP
SDA
SCL
1
2
3
4
5
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
3
4
5
6
7
18
19
20
17
16
15
14
8
9
10
13
12
11
2
1
CLK
CONTROL
INPUT
INTERFACE
DIGITAL
FILTER
5LEVE DAC
LOWPASS FILTER
CMOS
AMP
5LEVEL DAC
LOWPASS FILTER
CMOS
AMP
MODE
CONT
ROL
XTI
DGND
VDD
LRCIN
DIN
BCKIN
ZERO
D/C R
VOUTR
AGND
VCC
VOUTL
D/C L
MODE
RSTB
MD/DM0
MC/DM1
ML/MUTE
CLKO
XTO
NOISE SHAPER
IC401 TDA7462D013TR
IC702 PCM1717E-ST2
38
SWITCH
LP1/LP2
LP1/LP2
PORT
EXTENSION
CHARGE
PUMP
TEST
LOGIC
16 BIT PROG
COUNTER
REF
OSCILLATOR
TIMER
CONTROL
SWITCH
OUT
SUPPLY
&
POWER ON
RESET
11-21 BIT PROG COUNTER
14 BIT PROG
COUNTER
SWITCH
AM/FM
PHASE
COMP
INLOCK
DETECTOR
11 BIT PROG
COUNTER
SWITCH
SWM/DIR
6 BIT PROG
COUNTER
SWITCH
SWM/DIR
PRE COUNTER
:32/33
I
2
C BUS
INTERFACE
SWITCH
AM/FM
VDD1
1
2
3
4
6
7
8
5
9
10
11
14
12
13
17
18
19
20
21
22
23
24
25
26
27
28
16
15
LP FM
LP HC
LP AM
V REF
LCL/DX
SEEK
NIL
MONO
OSCIN
OSCOUT
NC
SCL
SDA
IF AM
LPOUT
VDD2
GND AM
AM IN
FM IN
NC
GND D
VDD1
ADDR
HFREF
AMOSC
DOUT/INLOCK
SSTOP
IF FM
IC601 TDA7427AD1TR
11
12
13
10
9
8
7
6
5
4
3
1
2
20
18
17
16
15
14
19
PAUSE
DETECTOR
INTERFACE
REGISTER
RDS/RDBS
DECODER
OSCILLATOR
AND CLOCK
TEST
CONTROL
MULTI-PATH
DETECTOR
RDS/RDBS
DEMODULATOR
CLOCKED
COMPARATOR
POWER SUPPLY
AND RESET
57kHz
8th ORDER
BAND-PASS
SIGNAL
QUALITY
DETECTOR
IIC-BUS
SLAVE
TRANSCEIVER
SCL
SDA
DAVN
VDDD
VSSD
VSSD
OSCI
OSC0
OSC0
TCON
MPTH
MRO
LVIN
CIN
SCOUT
VREF
MPX
VSSA
VDDA
AFIN
MAD
PSWN
5
4
4
IC602 SAA6588T-118
REGULATOR
VREF
+
–
+
–
THERMAL
SHUT
DOWN
OVER
VOLTAGE
PROTECT
PROTECT
CIRCUIT ON
5
1
2
3
4
AMP
ON
AMP
OUT
GND
VCC
VDD
OUT
OUT
ON
ON
5.7V
IC901 BA4903ST-V5
39
#1
#1
#1
#3
#1
#1
#1
#1
F901
3
8
9
10
11
7
7
4
TU601
5
MG-363X-121
2
1
#2
#2
#2
#2
#4
#4
#2
#2
#2
#2
6
12
SECTION 5
EXPLODED VIEWS
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories and packing materials and
hardware (# mark) list are given in
the last of this parts list.
the last of this parts list.
The components identified by
mark
mark
! or dotted line with mark.
! are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
Ref. No.
Part No.
Description
Remark
5-1. CHASSIS SECTION
N
N
Ref. No.
Part No.
Description
Remark
1
X-3376-728-1 PANEL (1) ASSY, SUB
2
X-3377-993-1 LOCK ASSY
* 3
X-3376-729-1 COVER ASSY
* 4
3-030-876-01 CHASSIS (MAIN)
5
1-776-527-61 CORD (WITH CONNECTOR) (ISO) (POWER)
* 6
3-030-927-01 BRACKET (M/D)
7
3-915-923-01 SCREW, GROUND POINT
* 8
A-3294-759-A MAIN BOARD, COMPLETE
* 9
3-030-928-01 HEAT SINK (REG)
* 10
3-019-565-01 BRACKET (IC)
* 11
3-030-991-01 HEAT SINK
* 12
3-024-285-11 CUSHION (RUBBER)
F901
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
TU601
1-693-440-22 TUNER UNIT
40
57
58
59
61
60
66
65
54
53
51
52
56
#5
#5
#5
B
A
B
A
55
not supplied
(DISPLAY board)
(DISPLAY board)
68
67
62
LCD501
63
64
69
5-2. FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
3-019-549-51 BUTTON (RELEASE)
52
3-019-544-23 KNOB (SEEK/AMS)
53
3-039-482-01 SPRING (RELEASE)
54
3-019-550-01 BUTTON (MODE/SOUND)
55
3-030-872-01 BUTTON (1-10)
56
3-030-873-21 BUTTON (CD EJECT)
57
3-025-315-12 BUTTON (SOURCE)
58
3-019-547-21 KNOB (VOL)
59
3-019-548-01 RING
60
3-019-543-11 KNOB (D-BASS)
* 61
X-3376-730-1 HOLDER (LCD) ASSY
* 62
3-030-879-01 BRACKET (LCD)
* 63
3-032-198-01 SHEET (E)
* 64
3-032-199-01 SHEET (ESD)
* 65
3-032-289-01 SHEET (DIFFUSION 5)
66
3-030-863-01 PANEL, FRONT BACK
* 67
3-030-997-01 SHEET, BACK
68
X-3377-866-1 PANEL ASSY, FRONT
69
3-019-527-01 BUTTON (DSPL)
LCD501 1-803-440-11 DISPLAY PANEL, LIQUID CRYSTAL
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