Sony CDP-CX255 / CDP-CX70ES / CDP-CX88ES Service Manual ▷ View online
— 59 —
• MAIN Section
IC302 CXA8055M
IC303 CXD8505BQ
ATT
FIR1
IIR
FIR2
FIR3
L.I.P
(X8)
PLM
PLM
3rd order
NOISE SHAPER
AC, DC
DITHER
CLOCK
GENERATOR
ATT
FIR1
IIR
FIR2
FIR3
L.I.P
(X8)
V
SS
2
R1(+)
V
SS
R1(–)
V
DD
V
DD
2
VSUB(C)R
DV
SS
R
DV
DD
R
DFV
DD
1
SPLM
20/16
XSEL
SYSM
ATT
SHIFT
LATCH
INIT
BCKI
LRCKI
DATAI
VSUB(D)R
DFV
SS
VSUB(D)L
INAF
512F
S
O
256F
S
O
128F
S
O
INVI
INVO1
MUTER
3rd order
NOISE SHAPER
MODE
“O” DETECT
MUTE
CIRCUIT
63
64
62
61
3 4
TIMING
CIRCUIT
S/P
9
10
11
12
13
14
15
16 17 18 19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
44
43
45
46
47
48
49
51
INVO2
50
52
53
54
55
56
57
58
59
60
MUTEL
TEST1
TEST2
DFV
DD
2
DV
DD
L
DV
SS
L
VSUB(C)L
V
DD
2
V
DD
V
SS
V
SS
2
1
V
SS
2
2
L2(+)
V
SS
L2(–)
5
V
DD
6
V
DD
2
7
VSUB(A)L
8
XV
DD
XOUT
XIN
XV
SS
XV
SS
VSUB(A)R
V
DD2
V
DD
R2(–)
V
SS
R2(+)
V
SS2
L1(–)
L1(+)
42
41
40
39
38
37
36
35
34
33
31
30
29
28
27
26
25
24
23
22
32
1
CIREF
ANALOG
VOLUME
CONTROL
CIRCUIT
CONSTANT
CONTROL
CIRCUIT
ECL
SWITCHING
CIRCUIT
ECL
SWITCHING
CIRCUIT
LOGIC
REFERENCE
VOLTAGE
CIRCUIT
NC
AGND
NC
IOR–
IOR+
C5
C6
C7R
AVEES
AVEES
C4R
C3
DVEE
C1R
DGND
1N1–R
1N1+R
NC
1N2+R
1N2–R
RIREF
VREF
VCNT
AGND
AVCC
NC
IOL–
IOL+
C7L
AVEES
AVEES
C4L
DVEE
DVCC
C1L
DGND
1N1–L
1N1+L
NC
1N2+L
1N2–L
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
11
CONSTANT
CONTROL
CIRCUIT
— 60 —
• JACK Section
ON/OFF
CURRENT
LIMITER
VREF
OVERHEAT
PROTECT
RESET
GENERATOR
ON/OFF
3
6
9
2
5
8
1
4
7
10
ERROR
AMP
ERROR
AMP
VIN1
VO1
CN
EN1
GND
RES
CD
EN2
VO2
VIN2
IC901 LA5616
3
6
7
2
5
1
4
9
8
10
ON/OFF
AMP
V REF
AMP
RESET
VOMUTE
CD
VIN
VO
RES
CN
GND
EN
VID
VOD
IC902 LA5601
— 61 —
• DISPLAY Section
IC701 M66004M5FP
CODE/COMMAND
CONTROL
CIRCUIT
INDICATION
CODE
RESISTOR
(8BITX16)
DECODER
(35BITX16)
INDICATION
CONTROL
RESISTOR
CLOCK
GENERATER
CIRCUIT
OUTPUT
PORT
(2BIT)
SIRIAL
RECEIVE
CIRCUIT
22
21
20
19
13
60
14, 15, 16
17, 18
1 – 12
64 – 61
32
23 – 31
59 – 33
INDICATION
CONTROLLER
DIGIT OUTPUT
CIRCUIT
CODE SELECT
CODE
WRITE
RAM
WRITE
(35BITX16)
DECODER
SEGMENT
OUTPUT
CIRCUIT
CIRCUIT
DIG12
DIG15
VCC2
SEG00
SEG26
DIG11
DIG00
RESET
CS
SCK
SDATA
P1
P0
VCC1
X OUT
X IN
VSS
SEG35
SEG27
VP
24
0
D
R
CK
23
0
D
R
CK
22
0
D
R
CK
21
0
D
R
CK
20
0
D
R
CK
19
0
D
R
CK
18
0
D
R
CK
17
0
D
R
CK
16
0
D
R
CK
15
0
D
R
CK
14
0
D
R
CK
13
4
5
6
7
8
9
10
11
12
0
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
1
D
R
CK
D
1
R
CK
D
1
0
0
R
CK
D
R
CK
D
R
CK
1
2
3
D
1
R
CK
D
1
0
0
R
CK
D
R
CK
D
R
CK
QC
QD
QE
QF
QG
QH
QI
QJ
QK
QL
QM
QN
QA
QB
VCC
D
ATA
OE
LT
RST
CLK
GND
SQP
QO
QP
IC702 M66310FP
— 62 —
SECTION 8
EXPLODED VIEWS
8-1. CASE SECTION
NOTE:
• Items marked “*” are not stocked since they are
seldom required for routine service. Some delay
should be anticipated when ordering these items.
should be anticipated when ordering these items.
• The mechanical parts with no reference number in
the exploded views are not supplied.
• Hardware (# mark) list and accessories and pack-
ing materials are given in the last of this parts list.
• Abbreviation
CND : Canadian model
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.
Les composants identifiés par une
marque
marque
! sont critiques pour la
sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
Ne les remplacer que par une
piéce portant le numéro spécifié.
1
1
1
1
2
3
4
5
6
7
8
9
11
12
Front panel
#1
#1
#2
#2
#2
#2
#2
#2
#2
T501
#18
not supplied
not
supplied
supplied
CNP901
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
* 7
4-983-366-62 PANEL, BACK (CX70ES:CND)
* 8
3-703-244-00 BUSHING (2104), CORD
9
4-886-821-11 SCREW, S TIGHT, +PTTWH 3X6
* 10
4-962-200-01 PLATE (TR), GROUND
* 11
A-4699-700-A JACK BOARD, COMPLETE (CX255)
* 11
A-4699-702-A JACK BOARD, COMPLETE (CX70ES)
12
3-704-515-01 SCREW (BV/RING)(CX255)
12
3-704-515-11 SCREW (BV/RING)(CX70ES)
! CNP901 1-575-042-21 CORD, POWER
! T501
! T501
1-431-447-11 TRANSFORMER, POWER
1
3-363-099-01 SCREW (CASE 3 TP2)
* 2
4-982-946-11 CASE
* 3
A-4699-699-A MAIN BOARD, COMPLETE (CX255)
* 3
A-4699-701-A MAIN BOARD, COMPLETE (CX70ES)
4
1-773-183-11 WIRE (FLAT TYPE) (23 CORE)
5
1-777-345-11 WIRE (FLAT TYPE) (19 CORE)
* 6
4-982-807-01 COVER (FFC)
* 7
4-982-813-72 PANEL, BACK (CX255:US)
* 7
4-982-813-82 PANEL, BACK (CX255:CND)
* 7
4-983-366-52 PANEL, BACK (CX70ES:US)
#2
not
supplied
supplied
#2
10
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