CD-BA3100 (serv.man7). Split - Section 5 - Voltage, Notes on schematic diagrams, Types of transistor LED, Waveforms, Troubleshooting, Function table of IC, Wiring of primarily supply leads - 47-61 - Sharp Audio Service Manual (repair manual)

cd-ba3100 (serv.man7) service manual
Model
CD-BA3100 (serv.man7)
Pages
15
Size
804.48 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Split - Section 5 - Voltage, Notes on schematic diagrams, Types of transistor LED, Waveforms, Troubleshooting, Function table of IC, Wiring of primarily supply leads - 47-61
File
cd-ba3100-sm7.pdf
Date

Read Sharp CD-BA3100 (serv.man7) Service Manual online

– 47 –
CD-BA3100H
VOLTAGE
1
VOLTAGE 
2
3
PIN
NO
PIN
NO
3
7
15
11
12
6
13
VOLTAGE 
14
1
2
5
9
8
10
4
2
1
4
5
8
7
3
PIN
NO
6
VOLTAGE 
1
PIN
NO
3
2
VOLTAGE 
2
1
3
PIN
NO
VOLTAGE 
PIN
NO
3
7
6
VOLTAGE 
1
2
5
9
8
4
24
23
22
21
20
19
18
17
16
10
14
15
11
12
13
9
8
7
6
1
4
5
2
3
PIN
NO
VOLTAGE 
12
10
PIN
NO
VOLTAGE 
11
15
14
3
2
5
1
6
4
9
13
7
8
16
17
18
18
17
16
10
14
15
11
12
13
9
8
7
6
1
4
5
2
3
PIN
NO
VOLTAGE 
12
11
15
7
6
8
9
10
4
5
2
14
1
13
3
PIN
NO
VOLTAGE 
3.3 V
IC302 
2.4 V
0.6 V
0.8 V
2 V
4.2 V
0.1 V
2.3 V
5 V
5 V
0 V
2.2 V
0 V
4.8 V
5.1 V
2.5 V
0 V
0 V
2.9 V
0 V
0 V
0 V
20
21
22
VOLTAGE 
PIN
NO
3
2
5
4
10
13
1
14
8
9
19
16
17
18
6
7
11
15
12
24
23
22
21
20
19
18
17
16
10
14
15
11
12
13
9
8
7
6
1
4
5
2
3
PIN
NO
VOLTAGE 
VOLTAGE 
PIN
NO
3
2
5
4
1
6
7
8
9
13
12
11
15
14
10
16
17
18
19
20
21
22
23
24
44
43
41
42
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
VOLTAGE 
PIN
NO
58
–20.8 V
–21.2 V
–19.0 V
–18.9 V
–18.9 V
–20.7 V
–19.6 V
–19.9 V
–14.4 V
–23.5 V
–23.4 V
–18.8 V
–22.8 V
–22.9 V
–22.6 V
–23.1 V
–20.5 V
–15.6 V
–20.6 V
–21.8 V
–28.4 V
4.8 V
–21.0 V
–21.3 V
–16.3 V
–16.4 V
–16.1 V
–16.4 V
–20.2 V
–16.0 V
–15.7 V
4.8 V
4.8 V
0 V
2.5 V
4.9 V
0 V
0 V
0 V
4.3 V
4.3 V
0 V
0 V
4.8 V
4.3 V
0 V
0 V
0 V
4.3 V
4.6 V
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
57
56
55
54
53
52
51
VOLTAGE 
PIN
NO
0 V
0 V
0 V
0.6 V
0 V
0.6 V
0 V
4.9 V
50
49
48
47
46
45
44
43
4.9 V
4.9 V
0 V
4.9 V
0 V
4.9 V
0 V
12.3 V 
12.3 V 
12.3 V 
4.4 V
5.0 V
3.0 V
3.4 V
0 V
2.3 V
5.4 V
0.7 V
0 V
4.8 V
0 V
0.7 V
5.4 V
0 V
4.8 V
2.9 V
2.4 V
0 V
0.5 V
0 V
0 V
4.9 V
4.9 V
4.9 V
4.9 V
4.9 V
4.9 V
4.9 V
4.9 V
4.9 V
0 V
4.8 V
40
31
28
30
39
38
37
36
29
34
27
32
33
35
26
25
24
23
22
21
20
19
18
17
16
10
14
15
11
12
13
9
8
7
6
1
4
5
2
3
41
42
PIN
NO
VOLTAGE 
IC701
IC2
3.7 V
3.7 V
4.9 V
2.1 V
2.1 V
0 V
4.2 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
2.1 V
2.1 V
1.6 V
4.9 V
4.9 V
0 V
0 V
1.6 V
3.0 V
4.9 V
1.6 V
2.1 V
2.1 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
2.0 V
2.1 V
2.1 V
2.1 V
1.7 V
1.8 V
1.7 V
VOLTAGE 
PIN
NO
42
41
3
2
5
4
1
6
7
8
9
13
12
11
15
14
10
16
17
18
19
20
21
22
23
24
25
26
35
33
32
27
34
29
36
37
38
39
30
28
31
40
3.7 V
0 V
3.2 V
3.2 V
3.2 V
3.2 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
4.9 V
4.9 V
4.9 V
4.9 V
4.7 V
0 V
0 V
0 V
0 V
3.2 V
0 V
0 V
0 V
0 V
3.2 V
0 V
0 V
0 V
0 V
3.2 V
3.2 V
3.2 V
3.7 V
0 V
0 V
3.7 V
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
PIN
NO
VOLTAGE 
PIN
NO
VOLTAGE 
1.6 V
1
2
3
4
5
6
7
IC1
1.0 V
1.6 V
1.8 V
3.3 V
0 V
8
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
1.6 V
1.6 V
1.6 V
1.6 V
1.6 V
1.6 V
1.5 V
1.5 V
1.5 V
1.5 V
0.8 V
3.2 V
0 V
1.6 V
1.6 V
1.6 V
1.6 V
0 V
0 V
3.2 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
1.6 V
0 V
0 V
0 V
3.2 V
3.2 V
10 V 
21 V 
Q851
0 V
12.9 V 
12.2 V 
Q850
21 V 
1.5 V
3.6 V
0 V
0 V
0 V
0 V
0 V
3.6 V
IC301
0.8 V
3.5 V
2.8 V
1.5 V
3.6 V
0 V
0 V
–37.7 V
IC901 
37.6 V 
0 V
–37.1 V
0 V
–35.5 V
0 V
0 V
36.8 V 
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
5 V
0 V
0 V
5 V
3.4 V
10 V 
3.0 V
IC601 
5.6 V
0.7 V
Q852
10 V 
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
–31.2 V
32.1 V 
IC902 
–32.3 V
31.1 V 
–29.7 V
0 V
0 V
IC903 
0 V
–13.0 V
13.2 V 
0 V
0 V
N.C.
N.C.
N.C.
N.C.
N.C.
4.5 V
4.5 V
IC303
2.1 V
2.1 V
0 V
0.3 V
4.5 V
3.0 V
2.4 V
4.6 V
3.3 V
0 V
4.6 V
1.2 V
2.1 V
3.3 V
2.1 V
3.9 V
3.5 V
2.7 V
1.2 V
2.0 V
2.6 V
2.6 V
5 V
9 V
IC705
9 V
9 V
1 V
0.5 V
9 V
9 V
0.5 V
4 V
3.5 V
4 V
3.5 V
0 V
4 V
9 V
9 V
2.5 V
4.9 V
1.5 V
IC703
2.5 V
0 V
2.5 V
2.5 V
0.9 V
2.5 V
0.4 V
0.4 V
4.9 V
16
10
14
15
11
12
13
9
8
7
6
1
4
5
2
3
PIN
NO
VOLTAGE 
0 V
4.5 V
0 V
2.5 V
2.5 V
0 V
2.5 V
2.5 V
ICT21
2.5 V
2.5 V
0 V
5.1 V
5.1 V
5.1 V
0 V
0 V
0.5 V
1.9 V
0.6 V
3.3 V
4.0 V
6.7 V
3.3 V
3.3 V
0.6 V
1.9 V
0.5 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
IC101
0 V
4.9 V
–25.4 V
–25.4 V
–25.4 V
–25.4 V
–25.4 V
–25.4 V
–25.4 V
–25.4 V
–28.1 V
–28.1 V
–28.1 V
–28.1 V
–28.4 V
–11.8 V
–24.6 V
–27.9 V
–27.9 V
–14.9 V
–14.9 V
–27.9 V
–18.2 V
–18.1 V
–18.1 V
–14.9 V
–26.9 V
–24.6 V
–24.6 V
–14.9V
–27.9V
4.9 V
2.5 V
3.5 V
3.0 V
1.9 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
IC702
PIN
NO
VOLTAGE 
CD-BA3100H
– 48 –
NSW1
PICKUP IN
ON—OFF
SW701
ON/STAND-BY
ON—OFF
SW702
PTY
ON—OFF
SW703
EON
ON—OFF
SW704
ASPM
ON—OFF
SW705
DISPLAY MODE
ON—OFF
SW706
DISC 1 PLAY
ON—OFF
SW707
DISC 2 PLAY
ON—OFF
SW708
DISC 3 PLAY
ON—OFF
SW709
DISC 4 PLAY
ON—OFF
SW710
DISC 5 PLAY
ON—OFF
SW711
DISC 6 PLAY
ON—OFF
SW712
DISC 5 EJECT
ON—OFF
SW713
DISC 6 EJECT
ON—OFF
SW714
DIMMER
ON—OFF
SW715
CD
ON—OFF
SW716
TAPE
ON—OFF
SW717
TUNER
ON—OFF
SW718
VIDEO/AUX
ON—OFF
SW719
MEMORY
ON—OFF
SW720
EQUALIZER
ON—OFF
SW721
DISC 1 EJECT
ON—OFF
SW722
DISC 2 EJECT
ON—OFF
 The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
(  ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
 Parts marked with “       ” (                          ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
 Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
 Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means pico-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
 Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
TYPES OF TRANSISTOR AND LED
SW723
DISC 3 EJECT
ON—OFF
SW724
DISC 4 EJECT
ON—OFF
SW727
REWIND
ON—OFF
SW728
FAST FORWARD
ON—OFF
SW729
STOP
ON—OFF
SW732
PLAY
ON—OFF
SW733
CLOCK
ON—OFF
SW734
TIMER
ON—OFF
SW735
TUNER UP
ON—OFF
SW736
TUNER DOWN
ON—OFF
SW737
REC/PAUSE
ON—OFF
SW738
X-BASS
ON—OFF
SWB101
DISC DETECT 1
ON—OFF
SWB102
DISC DETECT 2
ON—OFF
SWB103
DISC DETECT 3
ON—OFF
SWB104
MODE 1
ON—OFF
SWB105
MODE 2
ON—OFF
SWB106
MODE 3
ON—OFF
SWB107
MODE 4
ON—OFF
SWB108
MODE 5
ON—OFF
SWB109
TRAY 1
ON—OFF
SWB110
TRAY 2
ON—OFF
REF. NO
DESCRIPTION
POSITION
POSITION
REF. NO
DESCRIPTION
(1)  (2) (3) 
(S) (G) (D) 
E   C    B 
FRONT
VIEW
KTA1266  GR
KRA107  M
KRC102  M
KRC104  M
KRC107  M
KTA1274 Y
KTA1273  Y
KTC3203  Y
KTC3199  GR
2SA1015 GR
2SC1845 F
2SC380 O
KTC2026
4204SRT121
4204UYT121
B C E
FRONT
VIEW
FRONT
VIEW
– 49 –
CD-BA3100H
WAVEFORMS OF CD CIRCUIT
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  :                   0.0 ns
Hold off  :                0.2 
µ
s
CH3  :      0.000 V
CH4  :        0.00 V
BW   : FULL
=Trigger=
=Filter=
=Offset=
CH1
  v/DIV
  500 mV
1
IC1  21
2
IC1  20
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  :                   0.0 ns
Hold off  :                0.2 
µ
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
1
IC1  21
3
IC1  67
4
IC1  15
Vp-p=1.0 V~1.3 V
0.5 mV/div,0.5 
µ
sec/div
5
IC1   4
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  :               2.924 ms
Hold off  :                0.2 
µ
s
CH3  :         0.00 V
CH4  :         0.00 V
BW   : FULL
=Trigger=
=Filter=
=Offset=
3
IC1  67
4
IC1  15
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  :               2.924 ms
Hold off  :                0.2 
µ
s
CH3  :        0.00 V
CH4  :        0.00 V
BW   : FULL
=Trigger=
=Filter=
=Offset=
1
IC1  21
6
IC1  22
T
FDO
PDO2
PDO1
Stopped
CH1=500 mV
DC   10:1
CH3=1 V
DC   10:1
CH4=1 V
DC   10:1
500 ms/div
(500 ms/div)
NORM: 20 kS/s
1
4
3
=Record Length=
Smoothing :   ON
CH1  :      0.000 V
CH2  :          0.0 V
Main  :      100 K
Zoom  :         2 K
Mode  :   AUTO
Type   :   EDGE CH2
Delay  :                    0.0 ns
Hold off  :                0.2 
µ
s
CH3  :        0.00 V
CH4  :        0.00 V
BW   : FULL
=Trigger=
=Filter=
=Offset=
CH1
  v/DIV
  500 mV
1999/04/05  17:33:17
1
IC1  21
7
IC1  73
8
IC1  74
T
T
DOUT
Stopped
CH1=2 V
DC   10:1
500 ns/div
1999/04/07  09:25:28
(500 ns/div)
NORM: 200 MS/s
1
=Record Length=
Smoothing :   ON
CH1  :        0.00 V
CH2  :        0.00 V
Main  :         1 K
Zoom  :      100
Mode  :   NORMAL
Type   :   EDGE CH1
Delay  :               2.887 ms
Hold off  :                0.2 
µ
s
CH3  :        0.00 V
CH4  :        0.00V
BW   : FULL
=Trigger=
=Filter=
=Offset=
9
IC1  39
T
T
DATA
DATACK
LRSY
Stopped
CH1=2 V
DC   10:1
CH2=2 V
DC   10:1
CH3=2 V
DC   10:1
µ
s/div
(5 
µ
s/div)
NORM: 100 kS/s
1
2
3
=Record Length=
Smoothing :   ON
CH1  :        0.00 V
CH2  :        0.00 V
Main  :        5 K
Zoom  :     100
Mode  :   AUTO
Type   :   EDGE CH3
Delay  :                    0.0 ns
Hold off  :                0.2 
µ
s
CH3  :        0.00 V
CH4  :        0.00 V
BW   : FULL
=Trigger=
=Filter=
=Offset=
CH3
  v/DIV
       2 V
1999/04/05  20:50:17
10
IC1   58
IC1  59
IC1  60
11
12
CD-BA3100H
– 50 –
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.
TROUBLE SHOOTING
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.
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."
Turn off the power, and wipe  the lens softly using a cleaning paper moistened with commercially available cleaning solution so
as not to damage it. Be careful not to touch the lens with bare hands.
Dust gradually accumulates on the objective lens during use, and it may degrade performance.  To avoid this problem, use a
cleaning disc designed for CD optical pickup lenses.
When a CD cannot be played
1. "E-CD01" is displayed.
(1) Check the power to IC1 (LC78645E), the presence of the clock signal (33.8688 MHz) and the status of the RESET terminal
     (pin 48 on IC1).
(2) Does the pickup move to the PICKUP-IN Switch (NSW1) position?
If (1) and (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.
(1) Focus-HF system check
(2) Tracking system check
(3) Spin system check
(4) PLL system check
(5) Others
 Parts code
1.
CD optical pickup Lens cleaner disc
UDSKA0004AFZZ
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Download Sharp CD-BA3100 (serv.man7) Service Manual (Repair Manual)

Here you can read online and download Sharp CD-BA3100 (serv.man7) Service Manual in PDF. CD-BA3100 (serv.man7) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp CD-BA3100 (serv.man7) System. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.