Sony CDX-C90 Service Manual ▷ View online
– 94 –
CONTROL
CIRCUIT
LOW VCC
DETECTOR CIRCUIT
WRITE/ERASE
PULSE TIMER
PULSE TIMER
ERASE CIRCUIT
RY/BY
BUFFER
CHIP ENABLE/
OUTPUT ENABLE
CIRCUIT
I/O
BUFFER
DATA
LATCH
ADDRESS
LATCH
Y
DECODER
8,388,608
CELL
MATRIX
Y GATE
WRITE CIRCUIT
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
DQ3
DQ11
VCC
DQ4
DQ12
DQ5
DQ13
DQ7
DQ14
DQ6
DQ10
DQ2
DQ9
DQ1
DQ8
DQ0
GND
CE
OE
1
2
3
4
5
6
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
21
22
A8
A9
A15
A14
A13
A13
A12
A11
NC
RY/BY
WE
A7
A6
A6
A4
A5
NC
NC
RESET
NC
47
48
45
46
A3
A2
A2
A1
A17
A10
X
DECODER
A16
BYTE
GND
DQ15/A–1
A0
STB
STB
A18
LOGIC
DOUT/ACK
ADDRESS/COUNTER
DATA WORD
Y DEC
SERIAL MUX
EEPROM
DATA REGISTER
X DEC
H. V. PUMP/TIMING
LOGIC
CONTROL
SERIAL
R/W
INC
LOAD
EN
LOGIC
STOP
START
3
6
2
5
1
7
8
4
DIN
DOUT
VCC
TEST
SCL
SDA
NC
NC
NC
GND
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
IC102 CXA1946BR
IC302 BA8270F-E2
IC303 AT24C16N-10SI-TR
IC503 MBM29F800BA-70PFTN97
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
– 95 –
PHASE
DET
PRESCALER
MAIN
COUNT
IF COUNT
CTL
20BIT COUNT
SHIFT REGISTER LATCH
REFERENCE
DIVIDER
I/O
CTL
1
2
4
5
6
7
9
10
20
18
17
16
15
14
13
12
11
11
19
XIN
CE
CK
DA
CD
P0
P1
P3
XOUT
VSS
PD
VDD
FMIN
AMIN
P2
IFIN
SD
P4
P4
16
NOISE
AMP
AF AGC
DET
FILTER
AMP
NOISE
DET
SOM1
SOM2
IF AGC
DET
DET
AGC
REG
NOISE AGC
DET
2ND IF
AMP
NFB
GATE
NFB
AMP
SUB
GATE
MAIN
GATE
GATE
BUFFER
PHASE
SHIFTER
NFB
GATE
NFB
AMP
SUB
GATE
MAIN
GATE
GATE
BUFFER
PHASE
SHIFTER
24 23 22 21 20
19
18
17
1
2
3
4
5
6
7
8
9
10
12
11
15
14 13
(CH2)
(CH1)
IC721 BU2624FV-E2
IC600 BA6285FP-E2
IC851 TA2051FN(EL)
1
NC
NC
NC
NC
2
3
4
5
OUT1
RNF
7
GND
8
9
10
11
12
OUT2
NC
NC
NC
NC
NC
NC
NC
NC
VREF
IN1
GND
IN2
VCC
M.BAT
T
NC
NC
DRIVER
DRIVER
VREF
6
24
23
22
21
20
18
17
16
15
14
13
19
CONTROL
– 96 –
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. CASE SECTION
N
N
Ref. No.
Part No.
Description
Remark
#6
1
2
3
4
5
1
1
1
1
1
21
12
14
16
1
13
15
15
1
1
1
1
1
1
1
1
1
17
18
20
19
22
11
9
8
7
7
6
10
#6
#7
#1
MG-363S-121
#4
F901
M904
#1
#1
A
A
B
B
#18
23
1
3-906-712-11 SCREW (2.6X4) (CU), +PTT
* 2
3-025-797-01 COVER (UPPER)
3
1-783-269-11 CORD (WITH CONNECTOR) (POWER)
* 4
A-3294-476-A AUDIO BOARD, COMPLETE (US)
* 4
A-3294-505-A AUDIO BOARD, COMPLETE (E)
* 5
3-025-798-01 BRACKET (MD)
* 6
1-668-190-11 SENSOR BOARD
7
3-321-813-01 WASHER, COTTER POLYETHYLENE
8
3-026-749-01 GEAR (WORM)
9
3-026-751-01 GEAR (C)
10
3-026-750-01 GEAR (B)
11
X-3375-557-1 MOTOR ASSY
12
3-937-282-01 CASE (UPPER)
* 13
3-938-138-01 SHEET (E)
14
3-915-923-01 SCREW, GROUND POINT
* 15
1-670-686-11 EL BOARD
16
3-937-812-01 CASE (LOWER)
17
1-783-271-11 CORD (WITH CONNECTOR) (RCA)
(BUS AUDIO IN, SUB OUT)
18
1-783-271-21 CORD (WITH CONNECTOR) (RCA)
(FRONT LINE OUT, REAR LINE OUT)
* 19
3-025-805-01 PANEL, REAR
20
1-783-270-21 CORD, POWER
21
1-790-088-11 CORD (WITH CONNECTOR) (INVERTER)
22
3-029-367-01 COVER (MD)
23
3-029-989-01 CUSHION (COIL)
F901
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
M904
A-3301-552-A MOTOR SUB ASSY (PANEL)
– 97 –
5-2. FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
#3
#3
69
68
64
63
56
61
62
60
59
58
67
52
66
57
53
51
65
54
55
71
72
70
51
3-025-811-01 BUTTON (SOURCE)
52
3-025-820-01 FRAME (FRONT), ORNAMENT
53
3-025-793-01 KNOB (VOL)
54
3-025-815-01 LEVER (SEEK/AMS)
55
3-025-808-01 PLATE (SEEK/AMS), LIGHT GUIDE
56
3-025-814-01 BRACKET (FRAME)
57
3-349-825-61 SCREW
58
3-025-817-01 BUTTON (10 KEY)
59
3-025-818-01 BUTTON (FUNCTION)
60
3-026-388-01 BUTTON (MODE)
61
3-025-816-01 BUTTON (RELEASE)
62
3-934-415-01 SPRING (RELEASE)
63
1-669-127-11 FLEXIBLE SW BOARD
64
3-025-807-01 PANEL, FRONT BACK
65
3-026-389-01 COVER (SOURCE)
66
3-025-810-01 SHEET (FRONT), ADHESIVE
67
X-3375-934-1 PANEL SUB ASSY, FRONT (US)
67
X-3376-540-1 PANEL SUB ASSY, FRONT (E)
68
3-938-230-01 SHEET (BLIND)
69
1-803-056-11 LIQUID CRYSTAL MODULE
* 70
3-029-132-01 SHEET (MODE)
* 71
3-029-749-01 SHEET (SOURCE)
* 72
3-030-385-01 SHEET (10 KEY)
Click on the first or last page to see other CDX-C90 service manuals if exist.