Sharp SD-EX220 (serv.man2) Service Manual ▷ View online
SD-EX220H
6 – 17
5.6K
0.01
1.5
0.001
KDS226
MA111
47
0.22
0.22
47
0.22
0.22
0.1
0.1
1K
K
0.1
47/25
330K
0.001
1K
K
0.1
0.1
33K
4.7K
2.2K
6.8K
SFPW56
SFPW56
SFPW56
SFPW56
SFPW56
SFPW56
SFPW56
SFPW56
15K
15K
15K
15K
3.3K
3.3K
15K
15K
15K
15K
3.3K
3.3K
680
680
1K
1K
1K
1K
RA143
680
RA135
680
0.1
0.1
WA
68K
56K
2.7K
0.1(2W)
0.1(2W)
330K
22K
22K
82K
TJM4558CD
OPE
AMP.
8
4
0.01
1/50
1.5
0.01
1.5
1.5
0.01
0.01
0.001
0.001
0.001
0.1
100/16
0.1
100/16
100/16
0.1
100/16
0.1
MA111
MA111
MA111
MA111
2SB709 AR
390
390
2.2K
1K
1K
MA111
4.7K
5.6K
5.6K
5.6K
0.001
4.7K
4.7K
4.7K
MA132WK
MA132WA
100/50
0.001
SLA5515M
ICA101
SWITCHING
A
UDIO
POWER
A
MP.
ICA102
SWITCHING
AUDIO
POWER
A
MP.
SLA5515M
0.33
0.33
0.33
0.33
MA111
1
2
3
7
6
5
11 10 9
8
7
6
5
4
3
2
1
12 13 14 15
16
17 18 19 20 21
11 10 9
8
7
6
5
4
3
2
1
12 13 14 15
16
17 18 19 20 21
6
5
4
3
1
5
4
3
2
1
5
4
3
1
4
3
2
1
+B_AMP
GND
+B
GND
VBOOTA
VBOOTB
DTADJA
OUTB
VBBB
DTADJB
OUTB
SA
VCC
SB
GND
VKK
VKK
OUTA
VDD
INB
OUTA
VBBA
VBBB
INA
VBBA
VKK
VKK
GND
SB
VCC
SA
OUTB
DTADJB
VBBB
OUTB
DTADJA
VBOOTB
VBOOTA
VDD
VBBB
INB
OUTA
VBBA
INA
VBBA
OUTA
L-CH_+1
L-CH_-1
R-CH_-1
R-CH_+1
DRIVER_+9V
+B
1
3
2
1/25
1/25
1/25
1/25
1
2
3
3
2
1
1
2
-
+
-
+
CNP934
6-1
4
2
-F
TO
POWER
PWB
CNPS02
6
-
11
10
-
B
TO
PROTECT
CIRCUIT
PWB
180P(CH)
180P(CH)
180P(CH)
180P(CH)
0.001
0.001
+B
+B
+B
+B
CURRENT
SENSOR
• The number
1
to
6
,
11
,
12
are waveform number shown in page 5-2.
RA126
122
CA144
CA142
CA152
CA150
DA130
ICA102
DA108
CA146
DA110
CA114
CA166
DA401
LA100
RA174
RA172
RA138
RA130
LA106
RA146
CA184
CA180
CA192
RA150
CA188
CA196
LA104
CA182
CA186
RA148
RA170
LFA100
BIA103
CNSA103
CA418
CA420
CA417
CA419
DA116
RA140
RA132
RA142
RA134
RA144
RA136
RA145
RA137
LA102
RA153
RA152
CA116
CA178
DA114
DA112
CA156
DA131
DA132
CA145
CA160
CA154
RA127
123
RA434
RA438
RA436
RA432
CA151
CA149
CA141
DA109
CA143
ICA101
CA117
CA175
CA115
CA165
DA111
LA101
RA175
RA173
RA139
RA131
RA141
RA133
RA171
LA105
CA187
CA179
CA183
RA147
CA193
CA197
LFA101
RA151
LA107
CA181
CA185
RA149
LA103
CA194
DA115
DA113
CA153
CA155
DA133
CA159
DA405
RA421
RA416
RA415
QA400
RA412
RA409
RA403
RA400
RA406
DA403
DA400
PSA400
CA401
CA403
LA400
CA413
CA406
CA402
LFA400
CA404
CA405
RA426
RA425
RA429
RA424
RA427
RA428
ICA401
CA408
RA422
CA407
BIA104
CNSA104
DA107
5
6
11
12
7
8
9
10
11
12
SD-EX220H
7 – 1
Audio
SD-EX220H
Service Manual
Market
E
CHAPTER 7.
OPERATION FLOWCHART
[1] Troubleshooting
When the CD does not function
When the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Clean the objective lens, and
check the playback operation. When this section does not operate even after the above step is taken, check the following items.
check the playback operation. When this section does not operate even after the above step is taken, check the following items.
Remove the cabinet and follow the trouble shooting instructions.
"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens. Before attempting
any adjustment make certain that the lens is clean. If not, clean it as mentioned below."
any adjustment make certain that the lens is clean. If not, clean it as mentioned below."
Turn the power off.
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.
When a CD cannot be played
1. "E-CD01" is displayed.
1-1. Check the power to IC1 (LC78646E), the presence of the clock signal (16.9344 MHz) and the status of the RESET terminal (pin 66 on IC1).
1-2. Does the pickup move to the PICKUP-IN Switch (SW4) position?
If 1-1 and 1-2 are OK, check the system microcomputer (especially the communication line with the DSP).
2. Pressing the CD operation key is accepted, but playback does not occur.
2-1. Focus-HF system check
2-2. Tracking system check
2-3. Spin system check
2-4. PLL system check
2-5. Others
Parts code
1
CD optical pickup Lens cleaner disc
UDSKA0004AFZZ
HOW TO USE
CAUTION
Cleaning fluid
Cleaner disc
Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the
brush on the CD cleaner disc which has the mark next to it.
Place the CD cleaner disc onto the CD disc tray with the brush side down, then
press the play button.
You will hear music for about 20 seconds and the CD player will automatically stop.
If it continuous to turn, press the stop button.
1.
2.
3.
The CD lens cleaner should be effective for 30-50 operations, however if the
brushes become worn out earlier then please the cleaner disc.
If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft
cloth.
Do not drink the cleaner fluid or allow it to come in contact with the eyes. In the
event of this happening then drink and / or rinse with clean water and seek medical
advice.
The CD cleaner disc must not be used on car CD players or on computer CD-ROM
drives.
All rights reserved. Unauthorized duplicating, broadcasting and renting this product
is prohibited by law.
SD-EX220H
7 – 2
Vp-p=1.0 V~1.3 V
0.5 mV/div,0.5
∝sec/div
T
FDO
DRF
TE
Stopped
CH1=500 mV
DC 10:1
CH2=10 V
DC 10:1
CH3=1 V
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
2
3
=Record Length=
Smoothing : ON
CH1 :
0.000 V
CH2 :
0.0 V
Main :
100 K
Zoom :
2 K
Mode : AUTO
Type : EDGE CH1
Delay :
Type : EDGE CH1
Delay :
0.0 ns
Hold off :
0.2
∝s
CH3 :
0.00 V
CH4 :
0.00 V
BW : FULL
=Trigger=
=Filter=
=Offset=
-3 div
-1 div
0 div
+1 div
+3 div
CH Position To
CH2
Position
0.20 div
0.20 div
T
FDO
TDO
Stopped
CH1=500 mV
DC 10:1
CH3=500 mV
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
3
=Record Length=
Smoothing : ON
CH1 :
0.000 V
CH2 :
0.0 V
Main :
100 K
Zoom :
2 K
Mode : AUTO
Type : EDGE CH1
Delay :
Type : EDGE CH1
Delay :
0.0 ns
Hold off :
0.2
∝s
CH3 :
0.000 V
CH4 :
0.00 V
BW : FULL
=Trigger=
=Filter=
=Offset=
CH1
v/DIV
500 mV
500 mV
If the level is not normal.
1. Is focus servo activated ?
(Waveform drawing Figure 7-2-2)
Pins 7~11, 79 and 80 on IC1
Check the laser diode driver Q1 peripheral circuit.
Check the laser diode driver Q1 peripheral circuit.
When a disc is loaded, start playback operation.
2. Does DRF change from "L" to "H" ?
Is the disc rotating ?
3. Is the HF waveform normal ?
(Waveform drawing Figure 7-2-3)
Check the spin system.
If the disc is spinning and a HF waveform is generated,
DRF will go H.
DRF will go H.
Figure 7-2-1
Check the laser diode driver Q1 peripheral circuit.
2-1 Focus-HF system check.
Although a CD is inserted and the cover is closed, "NO
DISC" is displayed.
DISC" is displayed.
1. Does the pickup move to the PICKUP-IN Switch (SW4)
position ?
Sled motor (M801).
Press the OPEN/CLOSE switch (SW771) without inserting a
disc, and try starting the playback operation.
disc, and try starting the playback operation.
2. Does the focus (lens) move up and down ?
(Waveform drawing Figure 7-2-1)
Check the focus peripheral circuit.
3. Is the laser lit ?
Spindle motor (M802).
4. Is the turntable rotating ?
Figure 7-2-2
Figure 7-2-3
Yes
Yes
Yes
No
No
No
No
No
No
No
Yes
Yes
No
SD-EX220H
7 – 3
T
T
FDO
SPDO
Stopped
CH1=200 mV
DC 10:1
CH2=500 mV
DC 10:1
500 ms/div
1999/04/07 09:51:15
(500 ms/div)
NORM:20 kS/s
2
1
=Record Length=
Smoothing : ON
CH1 :
0.000 V
CH2 :
0.000 V
Main :
100 K
Zoom :
2 K
Mode : NORMAL
Type : EDGE CH2
Delay :
Type : EDGE CH2
Delay :
2.924 ms
Hold off :
0.2
∝s
CH3 :
0.00 V
CH4 :
0.00 V
BW : FULL
=Trigger=
=Filter=
=Offset=
T
T
TE
DRF
Stopped
CH1=10 V
DC 10:1
CH2=1 V
DC 10:1
100 ms/div
(100 ms/div)
NORM:100 kS/s
2
1
=Record Length=
Smoothing : ON
CH1 :
0.0 V
CH2 :
0.00 V
Main :
100 K
Zoom :
2 K
Mode : NORMAL
Type : EDGE CH1
Delay :
Type : EDGE CH1
Delay :
2.924 ms
Hold off :
0.2
∝s
CH3 :
0.00 V
CH4 :
0.00 V
BW : FULL
=Trigger=
=Filter=
=Offset=
The tracking servo is not activated.
Check the peripheral circuits at pins 14, 15 and 20 on IC1, and
CNS1A/B.
Check the peripheral circuits at pins 14, 15 and 20 on IC1, and
CNS1A/B.
If the waveform shown in Figure 7-3-1 appears and soon
after NO DISC appears ?
after NO DISC appears ?
2-2 Tracking system check.
Check the TE waveform at pin 15 on IC1.
A normal jump operation cannot be completed or the beginning of
the track cannot be found.
Check the around pin 20 on IC1.
the track cannot be found.
Check the around pin 20 on IC1.
"Initialization" is possible, but play is not possible ?
Data cannot be read. Check the VCO-PLL system.
"Initialization" is not possible.
Figure 7-3-1
Figure 7-3-2
Press the OPEN/CLOSE switch without inserting a disc, and
then try starting the play operation.
then try starting the play operation.
2-3 Spin system check.
The spin driver circuit is OK.
1. The turntable rotates a little ?
(Waveform drawing Figure 7-3-2)
Check around pin 22 on IC1, pins 15 and 16 on IC2, and CNS3A/B.
2. The turntable doesn't rotate.
No
Yes
No
Yes
Yes
No
Click on the first or last page to see other SD-EX220 (serv.man2) service manuals if exist.