Sony CDP-CX240 Service Manual ▷ View online
– 21 –
14. After the adjustment, load a disc only in slit 1, and press the 1/
u button to turn off the power.
15. Press the 1/u button while pressing the PUSH ENTER button
to turn on the power.
16. If the rotary table makes one round, and “YES” is displayed on
the fluorescent indicator tube after it stops, it means that the
adjustment has been performed properly.
adjustment has been performed properly.
Adjustment value 1:
At the shoulder part of waveform D1, T1 becomes H and T2 be-
comes L, and at the same time, the Y width must not be smaller
than 1/4 of the Z width.
In order to satisfy this value more easily, adjust so that X=Y ap-
proximately and observe the deviation of the waveform.
Adjustment value 2:
At the shoulder part of waveform D1, T1 becomes L and T2 be-
comes H, and at the same time, the Y width must not be smaller
than 1/4 of the Z width.
At the shoulder part of waveform D1, T1 becomes H and T2 be-
comes L, and at the same time, the Y width must not be smaller
than 1/4 of the Z width.
In order to satisfy this value more easily, adjust so that X=Y ap-
proximately and observe the deviation of the waveform.
Adjustment value 2:
At the shoulder part of waveform D1, T1 becomes L and T2 be-
comes H, and at the same time, the Y width must not be smaller
than 1/4 of the Z width.
Adjustment Location :
[ BD BOARD ] – Side B –
IC102
IC103
TP
(RF)
TP
(FE1)
TP
(TE)
TP
(VC)
[ MAIN BOARD ] – Component Side –
1
6
RV501
DISC SENSOR
ADJUSTMENT
CN506
TP2
(AFADJ)
TP1
(ADJ)
R540
IC501
R531
– 22 –
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
MAIN board
D.SENS (LUMINOUS) board
T.SENS board
T.MOTOR board
ILLUMINATION board
KEY BOARD board
DISP board
JOG board
DOOR MOTOR board
DOOR SW board
D.SENS (RAY-CATCHER) board
JACK board
BD board
L.SW board
L.MOTOR board
CDP-CX240
6-2. BLOCK DIAGRAMS
– BD SECTION –
– 23 –
– 24 –
4
3
5
6
6
7
8
10
11
16
21
22
RF
SUMMING
AMP
RF EQ
AMP
14
13
12
FOCUS
ERROR
AMP
TRACKING
ERROR
AMP
48
51
49
43
41
38
42
40
39
14
66
67
30
27
31
ASYMMETRY
CORRECTION
CORRECTION
ERROR
CORRECTION
DIGITAL
CLV
MIRR
DFCT
FOK
DETECTOR
72
75
75
20
4
80
79
5
6
7
8
60
3
32
33
26
29
28
LPF
LPF
LPF
4
5
2
1
19
20
10
9
23
24
15
17
16
12
13
26
27
M
M
E
PD1
PD2
PD2
F
9
3
LOUT
R ch
LMUTE
DATA
CLOK
SQSO
SQCK
XLAT
SYSM
SENS
SCOR
MAIN
SECTION
XRST
SCLK
AGC
09
OPTICAL PICK-UP
BLOCK (KSS-213B)
LASER
DIODE
PB
LD
LD
POWER
DETECTOR
TRACKING
COIL
FOCUS
COIL
M102
SLED
MOTOR
M101
SPINDLE
MOTOR
IC102
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
T+
T–
F–
F+
VC
D+5V
S101
LIMIT
MUTE
4
LD
DRIVE
Q101
APC LD
AMP
IC103
RF AMP
VC
BUFFER
TIMING
LOGIC
VC
VC
ASYO
RFAC
ASYI
RFDC
XTAI
XLON
XTAO
TE
CE
VC
SE
FE
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
MDP
SSTP
A/D
CONVERTER
DIGITAL
PLL
DIGITAL
OUT
16K
RAM
CPU
INTERFACE
SERVO
INTERFACE
SERVO
AUTO
SEQUENCER
FOK
DFCT
MIRR
SERVO DSP
FOCUS
SERVO
SERVO
TRACKING
SERVO
SLED
SERVO
PWM
GENERATOR
TRACKING
PWM
GENERATOR
FOCUS
PWM
GENERATOR
SLED
PWM
PWM
GENERATOR
SCLK
XRST
SENS
CLOK
XLAT
DATA
2
SQSO
SQCK
SCOR
LMUT
SYSM
LOUT
ROUT
DOUT
DIGITAL
OUT
OPTICAL
IC901
A
INTERNAL BUS
IC101
DIGITAL SIGNAL PROCESSOR
• Rch is same as Lch.
• SIGNAL PATH
• SIGNAL PATH
: CD
: CD (digital)
: CD (digital)
X101
16.9MHz
EFM
DEMODULATOR
D/A
INTERFACE
SERIAL
IN
INTERFACE
3rd ORDER
NOISE
SHAPER
PWM
OVER
SAMPLING
DIGITAL
FILTER
1
SUBCODE
PROCESSOR
– MAIN SECTION –
CDP-CX240
– 25 –
– 26 –
48
50
31
32
54
39
61
47
49
51
52
66
64
62
63
23
7
24
27
26
8
2
1
67
55
30
65
60
17
15
16
14
13
20
27
6
2
9
10
1
8
8
4
40
38
DISC
SENSOR
Q801, D801
JOG
RE601
DISC/
CHARACTER
MUTE
Q324
MUTE
Q321
MUTE
Q322,323
3
1
42
45
KEY MATRIX
S611 - 617,
S621 - 627,
S721 - 728,
S731 - 738
S621 - 627,
S721 - 728,
S731 - 738
SWITCH
Q503
68
71
•
74
77
11
13
•
15
19
10
1
•
26
23
•
21
78
80
•
1
12
1
•
3
63
•
65
60 - 46
32 - 41,30 - 6,31
40 - 54
4 - 39
45
55
62
46
28
56
20
58
19
18
63
61
60
56
BUFFER
Q701
1
4
8
7
6
8
7
6
RECT
D501, 502
D503, 504
RECT
–B
RECT
–30V REG
Q501
9
3
LOADING
MOTOR
DRIVE
DOOR
MOTOR
DRIVE
S-LINK
CONTROL A1
DATA
SCOR
SENS
SYSM
XLAT
SQCK
CLOK
LMUTE
LOUT
SQSO
SQSO
XRST
SCLK
AGC
09
BD
SECTION
A
1
2
3
1
3
2
6
5
IC302(1/2)
LPF
IC401
AMP
IC302(2/2)
MIX AMP
IC506
RESET
+5V/+7V REGULATOR
J903
CLK
DATA
DATA
SENS
SCOR
AMUTE
XLAT
SQCK
SUBQ
LDIN
LDOUT
DROUT
DRIN
22
6
21
5
4
TABLE
MOTOR
DRIVE
TBLL
TBLR
TP1
(ADJ)
TP2
(AFADJ)
T.S 2
T.S 1
T.S 3
RFSW
EXTAL
29
SMUTE
XTAL
DOORSW
INSW
OUTSW
D.SENS
57
AFADJ
25
ADJ
X501
10MHz
S810
DOOR
DET
S801
LOADING
DET
B+
RV501
DISC SENSOR
CD3
CD2
CD1
1 2 3
CD
S901 COMMAND MODE
IC501
SYSTEM CONTROLLER
IC601
REMOTE
CONTROL RECEIVER
CD1/2/3
KBDOUT
KBCOUT
KBDIN
KBCIN
KEY 3
KEY 0
–VCC
VO
+5V
REG
3
1
RESET
RST +VCC
+VCC
EN2
EN1
EN1
+5V
+7V
+7V
D802-D804
INSIDE
ILLUMINATION
RST
J821
KEY BOARD
CE
ICSW
WE
D00
D07
A0
A14
FL DATA
FL CLK
FLLT
LEDLT
RM IN
BUS OUT
BUS IN
RM
DATA
DATA
CLK
RST
LT
RST
LT
IC702
LED DRIVER
D601-604
D701-710
D701-710
CLK
AU BUS
BUFFER
BUFFER
Q901
J901, 902
VFL
AD1,SEG01 SEG35
DIG01 DIG15
DIG16
VFL
IC701
FL DRIVER
SCK
CLK
DATA
CLK
DATA
DA
CS
RESET
VF1
VF1
1G-15G
P1-P36
16G
VF2
VF2
FL701 FLUORESCENT INDICATOR TUBE
Q521
IC502 S-RAM
CE
WE
WE
D0
D7
A0
A14
D508
D509
M+5V
IC504
IC505
+VCC
VF2
VF1
FL701
D507
VFL
T901
POWER
TRANSFORMER
AC IN
IC803
IC802
IC801
DISC(A) SENSOR
DISC(B) SENSOR
ADDRESS SENSOR
• Rch is same as Lch.
• SIGNAL PATH
: CD
• SIGNAL PATH
: CD
IC503
MOTOR DRIVE
M802
LOADING
MOTOR
M810
DOOR
MOTOR
M801
TABLE
MOTOR
D505
LINE
FILTER
L901
7
M
M
M
MUTE
CONTROL
SWITCH
Q325-329
L
LINE OUT
L
2ND CD IN
D+5V
11 - 14,16 - 24
SWITCH
Q511,512
LED
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