Sony CDX-C680 / CDX-C780 Service Manual ▷ View online
– 68 –
IC4 MB814400C-70PFTN
WRITE
CLOCK
CLOCK
GENERATOR
DATA INPUT
BUFFER
DATA OUTPUT
BUFFER
COLUMN
DECODER
SENSE AMP
I/O GATE
4M BIT
MEMORY
CELL
ROW
DECODER
ADDRESS
BUFFER
PRE-
DECODER
REFRESH
ADDRESS
COUNTER
COUNTER
BOARD
BIAS
GENERATOR
MODE
CONTROL
CLOCK
GENERATOR
1
CLOCK
GENERATOR
2
18
24
25
26
17
16
15
14
5
4
1
2
3
9
10
11
12
13
23
22
DQ1
DQ2
WE
RAS
A9
A0
A1
A0
A1
A2
A3
VCC
VSS
DQ4
DQ3
DQ3
CAS
OE
A8
A7
A6
A5
A4
A4
1
5
2
4
3
6
7
8
SELECT A
SELECT B
3
2
1
0
3
2
1
0
INH
Y1
Y3
Y
Y1
Y0
VEE
VSS
X3
X0
X
X1
X2
VDD
A
B
9
12
14
15
11
16
13
10
1
2
3
4
5
6
7
8
9 10 11
12
13
14
OUT1-A
OUT1-B
PRE-
OUT1
IN1 (–)
IN1 (+)
REG-B
REG-
OUT
BIAS-
IN
MUTE
IN2 (–)
IN2 (+)
PRE-
OUT2
OUT2-B
OUT2-A
IN4 (–)
PRE-
OUT4
IN4 (+)
VCC
VCC
OUT3-B
GND
IN3(–)
GND
IN3(+)
PRE-
OUT3
OUT4-A
OUT4-B
OUT3-A
15
16
17
18
19
20
21
VCC
VCC
22
23
24
25
26
27
28
LEVEL
LEVEL
IN
IN
+
–
+
–
SHIFT
SHIFT
LEVEL
SHIFT
IN
+
–
LEVEL
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
SHIFT
IN
+
–
IC201 BU4052BCFV
IC7 BA6797FP-E2
– 69 –
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
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
REFERENCE
REFERENCE
VCCL
VCCL
VCCL
INL
SVRL
INML
INMR
SVRR
INR
VCCR
VCCR
VCCR
BUFFER
BUFFER
BUFFER
BUFFER
LIFT
AMP
SIGNAL
AMP
LIFT
AMP
SIGNAL
AMP
CL+
CL–
LGND
OUTL
OUTR
RGND
CR–
CR+
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 NC
IN(–)1
IN(+)1
IN(+)2
IN(–)2
NC
NC
NC
OUT1
VREF
NC
GND
NC
VCC
NC
OUT2
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
IC10 BU2624FV
IC205, 207, 208 TDA8574
IC209, 210 TA2050F (EL)
IC505 BA8270F
IC202 CXA1946BQ
– 70 –
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
1
2
3
4
5
6
7
14
13
12
11
10
9
8
TIMING
&
SYNCHRONIZATION
SIGNAL
PROTECTION
32 WORD X 8 BIT
DUAL PORT RAM
DUAL PORT RAM
CRC
CHECKER
CPU INTERFACE
VDD
VDD
DQSY
SRDT
SCLK
SW2
SW1
TEST
EXCK
SBSO
SCOR
WFCK
MCK
XMODE
GND
+
–
+
–
+
–
+
–
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
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
+
–
+
–
+
–
–
1
OPOUT
20
GND
25
OPIN–
24
OPIN+
2
NC
3
NC
4
BIAS
5
DRIN'
6
DRIN
23
NC
22
MUTE
21
NC
DRIVER
MUTE
7
NC
8
NC
9
NC
10
NC
11
NC
12
D
ROUT–
+
–
13
D
ROUT+
LEVEL SHIFT
IN
+
–
THERMAL
SHUT DOWN
19
GND
14
NC
18
NC
16
NC
15
NC
VCC
17
1
2
3
4
5
CD
NC
OUT
VDD
GND
RESET
IC401 PCM1716E
IC551 LC89170M-TLM
IC602 BA3918-V3
IC604 RN5VD33AA
IC601 BA6195FP-YT2
– 71 –
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
#2
#2
#2
#1
#1
#1
#1
#1
#2
#2
#4
#2
#2
#2
#5
#5
#5
#1
F601
21
(C780)
1
2
3
4
5
6
7
8
9
10
17
11
12
13
14
15
15
16
18
20
TU10
22
19
* 1
3-022-316-11 COVER
2
X-3375-069-1 PANEL ASSY, SUB
3
3-022-338-01 BUTTON (EJECT)
* 4
1-668-088-11 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-3294-384-A MAIN BOARD, COMPLETE (C780)
* 10
A-3294-405-A MAIN BOARD, COMPLETE (C680)
* 11
3-014-819-01 HEAT SINK (REG2)
* 12
3-022-317-01 BRACKET (AMP)
* 13
3-022-336-01 HEAT SINK
* 14
3-355-209-01 PLATE (B), GROUND
15
3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
* 16
3-022-335-01 BRACKET (MECHANISM DECK)
* 17
3-022-311-01 CHASSIS
18
1-475-684-11 INVERTER UNIT, EL
19
1-776-207-71 CORD (WITH CONNECTOR) (POWER)
20
1-777-246-11 CORD (WITH CONNECTOR) (ANTENNA)
21
1-783-326-11 CORD (WITH CONNECTOR) (EQ OUT) (C780)
22
3-023-539-01 SHEET (INSULATING)
F601
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
TU10
A-3282-045-A TUNER UNIT (TUX-012(E))
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