Panasonic SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG Service Manual ▷ View online
On the unit (SL-CT520), each automatic adjustment result are
displayed on the remote control display. This function is
convenient to check or identify which automatic adjustment
displayed on the remote control display. This function is
convenient to check or identify which automatic adjustment
1. Load the test disc (SZZP1054C).
2. Press
the
(SKIP/SEARCH)
and
(SKIP/SEARCH) buttons simultaneously and hold them,
and additionally press the
and additionally press the
(PLAY/PAUSE) button.
Follow the below steps when E-1 is displayed.
(Cause: Focus balance (FBC) is set beyond the limit.)
·
Check if
1. the waveform or voltage of the focus servo circuit is
correct, and
2. the optical pick-up returns to the normal state by
exchanging the traverse deck.
Follow the below steps when E-4 is displayed.
(Cause: Focus gain (FGC) is set beyond the limit.)
·
Check if
1. the waveform or voltage of the focus servo circuit is
correct,
2. the focus coil of the optical pick-up is correct (around 8
ohms), and
3. the optical pick-up returns to the normal state by
exchanging the traverse deck.
circuit is incorrect.
The followings are the contents of the automatic adjustment
result displays (Self-Check Function).
result displays (Self-Check Function).
3. Press the
(STOP/TURN OFF) button once.
4. An automatic adjustment result is displayed on the remote
control display.
Follow the below steps when E-F is displayed.
(Cause: All adjustments (TGC, FGC, TBC, FBC) are set
beyond the limit.)
beyond the limit.)
·
Check if
1. the optical pick-up returns to the normal state by
exchanging the traverse deck, and
2. the waveform or voltage of the servo ICs are correct.
Note:
It is not always necessary to exchange the traverse
deck when an error message is displayed.
deck when an error message is displayed.
Be sure to check if the circuit is defective or not before
exchanging the traverse deck.
exchanging the traverse deck.
Note:
If any other disc than the test disc (SZZP1054C) is used, an
error message may be displayed.
error message may be displayed.
This is not a malfunction.
8 Automatic Adjustment Results Display Function
(Self-Check Function)
8.1. How to display automatic adjustment results
8.2. Display of automatic adjustment results (Self-Check Function)
13
SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG
·
This schematic diagram may be modified at any time
with the development of new technology.
with the development of new technology.
Notes:
S201:
Laser ON/OFF switch in ON position
(It turns ON with disc holder closed.)
(It turns ON with disc holder closed.)
S202:
Rest detector switch in OFF position
(It turns ON when optical pick-up
comes to innermost periphery.)
(It turns ON when optical pick-up
comes to innermost periphery.)
S310:
Hold (HOLD) switch in OFF position
S801:
Play/pause (
) switch
S802:
Stop/turn off (
,TURN OFF) switch
S803:
F.skip/search (
) switch
S804:
R.skip/search (
) switch
S805:
Volume control switch (VOL-)
S806:
Volume control switch (VOL+)
·
Important safety notice:
Components
identified
by
mark
have
special
characteristics important for safety.
Furthermore, special parts which have purposes of fire-
retardant (resistors), high-quality sound (capacitors), low-
noise (resistors), etc. are used.
retardant (resistors), high-quality sound (capacitors), low-
noise (resistors), etc. are used.
When replacing any of components, be sure to use only
manufacturer’s specified parts shown in the parts list.
manufacturer’s specified parts shown in the parts list.
·
The supply part number is described alone in the
replacement parts list.
replacement parts list.
·
Voltage and signal line
: Positive voltage line
: Playback signal line
·
Circuit voltage and waveform described herein shall be
regarded as reference information when probing defect
point, because it may differ from an actual measuring value
regarded as reference information when probing defect
point, because it may differ from an actual measuring value
due
to
difference
of
Measuring
instrument
and
its
measuring condition and product itself.
Measurement conditions:
−
−
−
−
AC adaptor is used for power supply.
−
−
−
−
Set the hold switch to ON.
−
−
−
−
The parenthesized is the voltage for test disc (1 kHz,
L+R, 0 dB) in play mode, and the other, for no disc in
stop mode.
L+R, 0 dB) in play mode, and the other, for no disc in
stop mode.
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.
9 Type Illustration of ICs, Transistors and Diodes
B1ABMD000004
UN521LTX
UN5114TX
UN521MTX
UN5113TX
UN5215TX
UNR521000L
UN5114TX
UN521MTX
UN5113TX
UN5215TX
UNR521000L
B1CFHA000002
No.1
No.1
E
C
B
S
D
G
2SB1182TLPQR
B3AAB0000037
C
B
E
C
B
E
MN6627962JB
C0DBFFB00005
C2BBGF000595
C0DBFFB00005
C2BBGF000595
128PIN
48PIN
80PIN
80PIN
B1GFGCAA0001
Ca
A
Cathode
Anode
MA8056MTX
MA8120MTX
MA8120MTX
A
Ca
Anode
Cathode
C
C
E
E
B
B
C3EBCG000096
C3ABMG000207
C3ABMG000207
8PIN
50PIN
2SB709ATX
B1GBCFJG0004
B1GBCFJG0004
MA111TX
A
Ca
Anode
Cathode
10 Schematic Diagram Notes
14
SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG
11 Schematic Diagram
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
SL-CT520(EG,EB,EE,SG) CIRCUIT DIAGRAM
IC301
C2BBGF000595
C2BBGF000595
SYSTEM CONTROL
S310
(HOLD)
ON
OFF
R332
1K
R810
33K
W
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
RW
ZAN/JVDGE
HOLD
A.SHOCK
PLAY
REST
ZANSEL
TRAINSEL
MPSEL
CHGSEL3
CHGSEL
XBSSEL
XCSEL
TYPSEL/SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG12/LED
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
COM3
COM2
COM1
COM0
VL1
BLKCK
NC
VL2
VL3
BUZ
MUTEH
HPCNT
Vcc
XOUT
XIN
Vss
XCIN
XCOUT
RESET
CNVss
GUP
DSPORT
NC
PDOWN
POWERDRAM
NRST
KEY1
KEY2
VMONIT
OR1
VMONIT
OR
VMONIT
OR2
DOCT
OR
6KEY
VREF
A
Vss
RIO
ACDET
ECS
S
TAT
MDA
T
A/DIDO
MCLK/SK
CHARGE2
CHARGE1
MLD
POWER
OPEN
NRFDETSEL
J
L
O P Q
S T
M
R325
33K
R304
1M
Q502
B1CFHA000002
B1CFHA000002
SWITCHING
R317
100K
100K
R323
100K
A
Y
B
S801
(/)
Z
IC302
C3EBCG000096
C3EBCG000096
EE PROM
DO
DI
V
CC
NC
GND
NC
5
6
7
8
4
3
2
1
SK
CS
R361
1K
R327
100K
R806
10K
C301
1
N
R
X
FOCUS
COIL
TRACKING
COIL
1
2
24
3
4
5
6
7
8
9
10
11
12
13
14
15
CN101
16
17
18
19
20
21
22
23
1
2
24
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
STAND-BY
VC
RF
VB
VA
GCTL
VF
VE
Vcc
VREF
MPD
LD
GND
TR+
TR-
FO+
FO-
TRV-
TRV+
SP-
SP+
GND
REST
TRAVERSE
MOTOR
S202
(REST SWITCH)
SPINDLE
MOTOR
M
M
Q201
2SB709ATX
2SB709ATX
LASER POWER
DRIVE
DRIVE
R531
2.2
S201
(LASER ON/ OFF)
SL101
(SHORT LAND)
A
B
C
D
E
F
G
H
I
C D E F G H I
J
1
2
3
4
5
6
7
8
9
10
11
12
LD
MPD
Vcc
VE
VF
GCNT
.
GND
S.by
VC
RF
VB
VA
A
B
C
D
E
F
G
H
I
J
K
A
B
C
D
E
F
G
H
I
J
K
NC
OPTICAL PICK-UP
R534
22K
R532
22
Q2
UN5114TX
UN5114TX
LED DRIVE
D90
B3AAB0000037
(CHG)
R90
100
R306
47K
47K
S805
(VOL
-
)
S806
(VOL
+
)
R809
6.8K
R808
8.2K
R811
27K
S802
()
S804
()
R807
12K
R330
100K
100K
b
a
C538
0.1
K
V
R307
10K
B
A
R529
0
R204
220K
C201
4V47
U
e
C101
4V47
C539
0.1
S803
()
R335
0
R313
100K
100K
R328
100K
100K
C305
4700P
R329
100K
100K
C302
1
G
D
S
d
R322
0
R324
0
C321
1
R321
0
Q31
UN5215TX
UN5215TX
DC IN DET.
(BATTERIES)
(BATTERIES)
f
D31
MA111TX
R33
470K
R319
100K
2.5V
1.2V
1.3V
2.5V
2.5V
2.5V
2.5V
3V
2V
(0V)
0V
0V
2.5V
2.5V
2.5V
2.5V
2.5V
0V
0V(2.5V)
1.8V(1.4V)
2.5V
2.5V
0V
2.3V
0V
0V
0V(1.1V)
2.5V(2.3V)
2.5V(2.4V)
2.5V(0V)
0V(2.5V)
2.5V
2.5V
(2.4V)
2.5V
0V
2.5V
(2.3V)
2.5V
(2.2V)
2.5V
2.5V
0V
(1.8V)
0V
2.5V
2.5V
(1.7V)
2.5V
2.5V(0V)
2.5V
1V
2.5V
2.5V
0V
0V
:POSITIVE VOLTAGE LINE
:PLAYBACK SIGNAL LINE
2.5V
0V
SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG
15
13
14
15
16
17
18
19
20
21
22
23
24
SL-CT520(EB,EG,EE,SG) CIRCUIT DIAGRAM
IC501
MN6627962JB
MN6627962JB
SERVO AMP/SERVO PROCESSOR/
DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER & D/A CONVERTER
DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER & D/A CONVERTER
R502
56K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
48
49
50
51
52
53
54
55
56
57
65 66 67 68 69 70 71 72 73 74 75
85
76
86
77
87
78
88
79
89
80
100
81 82 83 84
33
34
35
36
37
38
39
40
41
43
44
45
46
47
42
UDQM
D8
D9
D10
D11
D12
D13
DRV
DD
2
D14
D15
D7
D6
D5
D4
D3
D0
D1
D2
DV
SS
3
VM4SEL/OFF
AV
DD
1
HPCNT
IOV
DD
2
X2
X1
DV
SS
2
AV
DD
2
LOOUTL
AV
SS
1
NC
LOOUTR
HPV
DD
L
HPOUTL
HPVssL
HPV
DD
R
HPOUTR
HPV
SS
R
NTEST
DV
DD
2
ATOFS
FEIN
AFOFS
CEA
RFENV
FEOUT
TEOUT
TEN
ADPV
CC
CLD
E
V
DD
LD
V
DD
DRV
TEIN
VREF
DUTYADJ
CKMON
PD
LD
FEN
DV
SS
1
A7
A6
A5
A4
LDQM
NCAS
NWE
NRAS
CKE
A3
A2
A1
A0
REGON
DR
V
DD
1
DV
DD
1
A10
BA1
BA0
21
22
23
24
PWMSEL
SPOUT
25
SPPOL
TR
VP
TR
VM
DV
DD
3
NRST
FLAG0
TX
PMCK
SMCK
PLLFO
PLLF
IREF
DSLF
ARFIN
F
B
C
A
DCDET
L704
470
H
C570
1
C513
0.1
C504
0.1
R505
680
C561
0.1
Q
T
b
X
N
M
L
K
I
G
F
E
D
C
B
A
D
E
G
I
F
S
T
V
W
X
Y
Z
a
b
j
d
J
H
C704
0.1
C703
0.1
C701
4V470
C702
1
C506
1
L502
100
H
L504
100
H
B
P
O
26
27
28
29
30
31
32
58
59
60
61
62
63
64
90 91 92 93 94 95 96
97
98
99
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
BLKCK
STAT
MLD
TRP
TRM
FOP
FOM
IOV
DD
1
AV
DD
3
AV
SS
3
RFV
DD
RFN
RFOUT
RFIN
CAGC
ARFOUT
AV
SS
2
PMSEL1/FBAL
PMSEL2/TBAL
LASERSEL/BDO
CL
VS/RFDET
IPFLAG2/VDET
MCLK
M
D
ATA
SDRCK
A11
A9
A8
e
f
g
h
i
U
R
Q
P
O
W
d
C71
1
0.1
R51
1
2.2K
R521
2.2K
R520
2.2K
C505
0.022
C507
6.3V330
C531
390P
390P
R514
680
C523
1
C524
1
C529
0.1
C534
0.047
0.047
C520
1
R508
6.8K
C521
3300P
R518
3.3K
R506
39K
R519
47K
C510
0.039
C519
560P
560P
K
L M N O P Q A B
R527
2.2K
C536
1
R526
2.2K
R516
100K
100K
C518
560P
560P
VREF
RF
R523
10
C517
1
1
V
DD
V
SS
2
DQ0
3
DQ1
4
V
SS
Q
5
DQ2
6
DQ3
7
V
DD
Q
8
DQ4
9
DQ5
10
V
SS
Q
11
DQ6
12
DQ7
13
V
DD
Q
14
LDQM
15
/WE
16
/CAS
17
/RAS
18
/CS
19
BA
20
A10/AP
21
A0
22
A1
23
A2
24
A3
25
V
DD
DQ15
DQ14
V
SS
Q
DQ13
DQ12
V
DD
Q
DQ1
1
DQ10
V
SS
Q
DQ9
DQ8
V
DD
Q
NC/RFU
UDQM
CLK
CKE
NC
A9
A8
A7
A6
A5
A4
V
SS
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26
Z
Y X
W V
U T
S
F
O N
L K
g h
i
f
e
j
b
I
G
A B
D E
J
Q
H
C
d
M
P
R
C528
0.1
C527
0.1
IC503
C3ABMG000207
C3ABMG000207
DRAM
H
C522
0.1
X501
(16.9344MHz)
1
3
2
R504
1M
R507
150
R509
100K
R512
100K
R513
100K
R515
100K
R528
100K
C537
0.1
A
U
C535
0.1
R524
10K
R525
10K
C
e
B
A
C D
C51
1
0.1
R517
0
R536
0
(1.2V) 0V
(1V) 0V
(1.3V) 0V
2.5V
(1.2V) 0V
(1.4V) 2.5V
(1.1V) 0.1V
(1.4V) 2.5V
(1.4V) 0.1V
(1.4V) 0.1V
2.5V
(2.2V) 2.5V
0V
(1.2V) 0V
1.2V
1.2V
(1.2V) 0.9V
(1.2V) 0.9V
(2.2V) 1.4V
(2.3V) 0V
(1.2V) 0.9V
1.2V
(1.4V) 1.8V
2.5V
2.5V
0V
(0.2V)
0V
0V
0V
0V
0V
0V
0V
(0.6V)
0V
1.5V
3.2V
0V
(1.6V)
3.2V
(1.6V)
0V
(1.6V)
3.2V
(1.6V)
0V
(0.2V)
3.2V
3.2V
3.2V
3.2V
3.2V
(1.6V)
0V
(1.6V)
0V
(1.6V)
3.2V
(1.6V)
0V
0V
0V
0V
3.2V
3.2V (1.6V)
3.2V (1.5V)
0V (1.5V)
0V (1.5V)
3.2V (1.5V)
0V (1.6V)
3.2V
0V (1.6V)
0V (1.5V)
3.2V (1.5V)
3.2V (1.6V)
3.2V (1.5V)
0V (1.6V)
0V (1.5V)
0V (1.6V)
0V (1.5V)
0V (1.5V)
1.5V
2.5V
1.2V
0V
0V (1.1V)
2.5V
(2.3V
)2.5V
(2.4V)
2.5V
2.5V
1.5V
2.5V
1.2V
1.2V
2.5V
(1.5V)0V
3V
(1.5V)0V
3V
2.5V
3V
2.5V
(1.1V)1.5V
(1.1V)1.5V
0.8V
1.2V
(1.2V)
1.3V
3.2V(1.6V)
0V(1.6V)
0V(1.6V)
3.2V(1.6V)
0V
0V
0V(0.2V)
0V
3.2V
3.2V
3.2V(1.6V)
3.2V(1.5V)
0V(1.5V)
0V(1.5V)
3.2V
3.2V(1.5V)
0V(1.6V)
0V(1.6V)
0V(1.5V)
3.2V
(1.6V)0V
(1.5V)0V
(1.5V)0V
(1.5V)0V
3.2V
(1.6V)3.2V
(1.5V)3.2V
(1.6V)3.2V
(1.5V)3.2V
3.2V
3.2V
3.2V
3.2V
3.2V
0V
0V
(1.6V)0V
(1.6V)3.2V
(1.6V)0V
(1.6V)3.2V
3.2V
(1.7V) 2.5V
1.8V
2.5V
0V
0V
1.2V
:POSITIVE VOLTAGE LINE
:PLAYBACK SIGNAL LINE
SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG
16
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