Sony CDX-C7850R Service Manual ▷ View online
– 71 –
IC202 CXA1946BQ
IC103 MSM6688GS
1
2
3
4
42
41
40
39
38
37
36
32
31
30
29
35
34
33
5
6
7
8
9
10
12
13
14
11
15
16
17 18
19 20 21 22 23 24
25
26
27
28
43
44
45
47
48
49
50
52
53
54
55
56
51
46
MCU I/F
STATUS
REGISTER
TEST
CIRCUIT
12BIT
ADC
LPF
12BIT
DAC
+
-
+
-
SG
CIRCUIT
ADDRESS
CONTROLLER
ADPCM
ANALYZER/
SYNTHESIZER
TIMING
CONTROLLER
OSC
DATA
I/O
REGISTER
CONTROLLER
D0
D1
D2
D3
BUSY
RPM
VPM
TEST
TEST
TEST
TEST
TEST
MCUM
CE
ACON
CS3
CS2
CS1
SADX
SADY
SADY
PDWN
TEST
TEST
AGND
RSEL2
RSEL1
RSEL1
DGND
TEST
TEST
ADIN
FOUT
AOUT
FIN
AMON
DVDD
AVDD
SG
SGC
LOUT
LINE
MOUT
MIN
CE
WR
RD
RESET
NAR
RWCK
DVDD
XT
XT
WE
DROM
DI/0
CS4
TAS
SAS
MON
37
GAIN12
38
GAIN11
39
IN14
40
IN13
41
IN12
42
IN11
INPUT SW
36
GAIN134
LOUD
VOLUME
8dB STEP
VOLUME
1dB STEP
TONE
FADER
35
LDLC1
34
LDHC1
33
INAO1
32
VRIN1
31
VOUT1
30
TIN1
29
TCLC1
28
TCLC11
27
TCLC12
26
TCO1
25
FDIN1
24 FNTO1
23 REO1
VCTBUFF
VCTBUFF
VCTBUFF
LATCH
CONTROL
LATCH
1
GAIN234
LOUD
VOLUME
8dB STEP
VOLUME
1dB STEP
TONE
FADER
2
LDLC2
3
LDHC2
4
INAO2
5
VRIN2
6
VOUT2
7
TIN2
8
TCLC2
9
TCLC21
10
TCLC22
11
TCO2
12
FDIN2
14 REO2
13 FNTO2
VCTBUFF
VCTBUFF
VCTBUFF
SHIFT
REGISTER
ZCDET
43
IN21
44
IN22
45
IN23
46
IN24
47
GAIN21
48
GAIN22
INPUT SW
18 VCC
17 VCT
16 DATA
15 TIMER
22 CE
21 CLK
20 DGND
19 GND
45k
45k
– 72 –
IC204 CXA1846N
20 19
18
17
16
15
14
13 12 11
1
2
3
4
5
6
7
8
9 10
1dB STEP
VOLUME
8dB STEP
VOLUME
1dB STEP
VOLUME
8dB STEP
VOLUME
VCT
BUFFER
LATCH
SHIFT
REGISTER
LATCH
CONTROL
ZC
DET
+
–
+
–
–
INP 1
INN 1
VCT 1
INAO 1
VRIN 1
OUT 1
N.C.
GND
VCT
VCC
INP 2
INN 2
VCT 2
INAO 2
VRIN 2
OUT 2
CE
DATA
CLK
INIT
IC401 PCM1716E
1
2
3
4
5
6
7
8
9
10
11
12
13
14
27
26
25
24
23
22
21
20
19
18
17
16
15
28
SERIAL
INPUT I/F
8 x OVER
SAMPLING
DIGITAL
FILTER
&
FUNCTION
CONTROLLER
MULTI-LEVEL
DELTA-SIGMA MODULATOR
DAC
DAC
LOW-PASS FILTER
(R)
LOW-PASS FILTER
(L)
MODE
CONTROL
I/F
CRYSTAL
OSC
BPZ-CONT
SCK
LRCIN
DIN
BCKIN
CLKO
XTI
XTO
DGND
VDD
VCC2R
AGND2R
EXTR
N.C
VOUTR
AGND1
M/IIS
MC/DM1
MC/DM1
MD/DM0
MUTE
MODE
CS/IWO
OPEN
DRAIN
DRAIN
RST
ZERO
VCC2L
VCC1
AGND2L
EXTL
N.C
VOUTL
+
–
+
–
+
–
+
–
OVER VOLTAGE
PROTECT
REGULATOR
1
2 3 4
5
6
7
8
9
10
12
11
NC
MODE2
MODE1
STB
VDD
AMP
VCC
ANT
COM
AM
FM
GND
IC602 BA3918-V3
– 73 –
#2
#2
#2
#1
#1
#1
#1
#1
#2
#2
#4
#2
#2
#2
#5
#5
#5
#1
F901
20
1
2
3
4
5
6
7
8
9
10
17
11
12
13
14
15
15
16
18
TU10
21
19
MG-363S-121
22
23
24
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
• Abbreviation
G : German model
1
3-022-316-11 COVER
2
X-3375-070-1 PANEL ASSY, SUB
3
3-022-338-01 BUTTON (EJECT)
* 4
1-668-088-21 RELAY BOARD
5
X-3375-068-1 LOCK ASSY
6
X-3375-066-1 BRACKET (GEAR) ASSY
7
3-953-235-01 DAMPER, OIL
8
3-011-170-01 GEAR (HOLDER)
9
3-341-752-11 WASHER, POLYETHYLENE
* 10
A-3294-672-A MAIN BOARD, COMPLETE (AEP,UK)
* 10
A-3294-675-A MAIN BOARD, COMPLETE (G)
* 11
3-014-819-01 HEAT SINK (REG2)
* 12
3-022-317-11 BRACKET (AMP)
* 13
3-022-336-01 HEAT SINK
* 14
3-031-812-01 PLATE (TUX-B), SHIELD
15
3-915-923-01 SCREW, GROUND POINT
16
3-022-335-01 BRACKET (MD)
17
3-022-311-01 CHASSIS
18
1-475-684-11 INVERTER UNIT, EL
19
1-776-527-71 CORD (WITH CONNECTOR) (ISO) (POWER)
20
1-777-246-21 CORD (WITH CONNECTOR) (ANTENNA)
21
3-023-539-02 SHEET (INSULATING)
22
3-831-441-99 CUSHION (SP)
* 23
4-871-306-02 RUBBER (A)
* 24
3-016-299-01 CUSHION
F901
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
TU10
A-3282-045-A TUNER UNIT (TUX-012(E))
– 74 –
5-2. FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
#3
not supplied
(KEY board)
(KEY board)
#3
#3
EL900
LCD900
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
68
70
51
3-022-329-21 BUTTON (SOURCE)
52
3-033-667-01 KNOB (VOL)
53
3-022-323-31 LEVER (SHUTTLE)
* 54
3-030-648-01 PLATE (RING), LIGHT GUIDE
55
X-3377-447-1 PANEL SUB ASSY, FRONT
56
3-022-330-11 BUTTON (MODE)
57
3-022-331-01 BUTTON (SOUND)
58
3-022-324-02 PLATE (SHUTTLE), LIGHT GUIDE
59
3-022-333-01 BUTTON (OPEN)
60
3-932-225-01 SPRING (OPEN)
61
3-022-308-01 BUTTON (PTY)
62
3-022-332-01 BUTTON (10 KEY)
63
3-022-327-01 PLATE (LCD), GROUND
64
1-694-414-11 CONDUCTOR BOARD, CONNECTION
* 65
3-034-558-01 ILLUMINATOR (LCD)
* 66
3-022-326-03 PLATE (LCD), LIGHT GUIDE
67
3-010-999-01 BEARING (L)
68
3-010-998-01 SPRING (BEARING)
69
3-011-000-01 BEARING (R)
70
3-022-319-03 PANEL, FRONT BACK
EL900
1-517-766-11 LIGHT, ELECTRO LUMINESCENT
LCD900 1-803-504-11 DISPLAY PANEL, LIQUID CRYSTAL
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