Sharp MD-X8 Service Manual Page 65
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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MD-X8
Figure 65 SCHEMATIC DIAGRAM (20/20)
7
8 9 10 11 12
• The numbers 1 to 24 are waveform numbers shown in page 70 and 71.
123456789
10 11 12 13 14
28 27 26 25
24 23 22 21 20
19 18 17 16 15
VSSA
VDDA
VINL
VREFA
VINR
VADCN
VADCP
OVERFL
VDDD
VSSD
L3DATA
BCK
WS
DATAO
DATAI
TEST3
TEST2
AVSS
AVDD
VOUTR
VDDO
TEST1
R IN
AA.GND
L IN
AD.GND
L OUT
R OUT
AVCC
AA.GND
AA.GND
PDOWN
BACKUP
PDOWN
BACKUP
24
23
D.GND
DVDD
DVDD
D.GND
D.GND
D.GND
D.GND
DSTB
MDDATA
KDATA
SERCH
DSCK
LOAD SW
MD-ST
RESET
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
L3MODE
L3CLK
SYSCLK
VSSO
VREFD
VOUTL
LOADIN
RESET
2
1
3
SERCH
KDATA
DSCK
MDDATA
DSTB
L3DATA
L3CLK
L3MODE
STID
A
D
CNP950
P41 12 - C
TO MAIN PW
B
MD FLAT
CABLE (42)
1
24
1
2
R1947
47
JC121
0.047
R1456
1K
TP1503
TP1501
TP1502
TP1512
TP1511
CNS1902
C1810
1
K
R
1
7
0
C1704
1
R1806
12
R1807
12
R1734
47K
R1735
47K
R1733
47
R1731
47
C1729
220P(CH)
CJ172
220P
(CH)
C1724
22P
(CH)
C1722
100P
(CH)
TP1520
TP1518
TP1519
TP1521
TP1523
TP1524
TP1522
LR190
4.7µH
L1950
1µH
C1904
0.33
TP1515
TP1516
TP1517
Q1451
RNC1407
R1461 10K
R1459 10K
R1463
10K
C1425
0.047
TP1510
TP1509
TP1508
TP1507
TP1505
TP1506
R1452
3.3K
R1454 1K
R1458 6.8K
R1460 6.8K
R1462 6.8K
R1464 220
R1466 220
TP1504
R1995
2.2K
R1994
2.2K
R1810
1K
R1811
27K
R1708
4.3K
R1707
4.3K
C1460
1
IC1701
UDA1340
A/D,D/A CONVERTER
C1716
0.01
C1711
0.01
1
1
C1717
0.01
TP1711
TP1710
C1712
47/4
C1714
47/4
TP1713
TP1712
C1713
22/4
C1715
22/4
C1706
10/16
C1707
10/16
1
701
1M
R1702
680K
1
804
6
2 G
R1939
1K
R1712
100K
713
39K
R1714
39K
MD PLAYBACK SIGNAL
MD RECORD SIGNAL
- SERVICE MANUAL 1
- SPECIFICATIONS 2
- IMPORTANT SERVICE NOTES 2
- NAMES OF PARTS 3
- REMOTE CONTROL 4
- MINIDISC SYSTEM LIMITATIONS 5
- If a problem occurs 6
- TROUBLESHOOTING 6
- MD / CD STEREO 7
- Quick-Guide 7
- Guía rápida 7
- DISASSEMBLY 8
- Figure 10-2 10
- Figure 10-3 10
- Figure 10-1 10
- MD Mechanism 11
- MD MECHANISM SECTION 12
- Loading pinch 13
- Fixing washer 13
- (G1) x 1 13
- MD mechanism 13
- CD MECHANISM SECTION 14
- ADJUSTMENT 15
- CD TEST MODE 16
- MD SECTION 17
- • Test Mode 18
- 2. AUTO adjustment mode 19
- 3. RESULT sub-mode 19
- : Measurement value 24
- 8. TEST-PLAY mode 25
- 9. TEST-REC mode 25
- 10. INNER mode 25
- Jitter Meter 26
- EXPLANATION OF ERROR DISPLAY 27
- -PROM Setting Mode Chart 30
- Figure 30 30
- NOTES ON SCHEMATIC DIAGRAM 31
- FAN MOTOR 33
- AC POWER 33
- CORD(265) 33
- M56748FP 35
- TO µ-COM 36
- IX2679AF 37
- MIC PWB-C7 38
- JACK PWB-E 38
- AM SIGNALFM SIGNAL 39
- MAIN PWB-A(1/3) 39
- MAIN PWB-A(2/3) 40
- FM SIGNAL 41
- CD SIGNAL 41
- MAIN PWB-A(3/3) 42
- LC75396E 43
- AUDIO PROCESSOR 43
- MAIN PWB-A 44
- 8 9 10 11 12 45
- FOCUS/TRACKING/ 46
- SPIN/SLIDE DRIVER 46
- MD OPTICAL 48
- PICK UP UNIT 48
- MD MECHANISM SWITCH PWB-H 48
- DISPLAY PWB 50
- LED PWB-C4 50
- SWITCH B PWB-C3 50
- SWITCH C PWB-C5 50
- LAMP PWB-C1 50
- SWITCH A PWB-C2 51
- LAMP PWB-C1 SWITCH A PWB-C2 52
- DISPLAY PWB-C6 53
- POWER PWB-B1 55
- POWER AMP. PWB-B2 57
- SITUATION : 58
- MD MAIN PWB-G 61
- MD MECHANISM SWITCH 62
- MD OPTICIAL PICKUP UNIT 62
- MD PLAYBACK SIGNAL 65
- MD RECORD SIGNAL 65
- MD MAIN PWB -G(TOP) 66
- MD MAIN PWB - G (BOTTOM) 67
- VOLTAGE (MD MAIN PWB) 68
- WAVEFORMS OF CD CIRCUIT 69
- WAVEFORMS OF MD CIRCUIT 70
- D/A CONVERSION PLAY 71
- TROUBLESHOOTING (CD SECTION) 72
- 1.0V/DIV 73
- 0.5µsec/DIV(DC) 73
- (When playing 73
- back the disc) 73
- TROUBLE SHOOTING (MD SECTION) 76
- • Normal playback 78
- • Audio playback circuit 78
- • Focus servo failure 79
- • Disc motor fails to run 80
- • Tracking servo failure 80
- • Slide servo failure 80
- FUNCTION TABLE OF IC 81
- ROM:128K 84
- REF — + 3.15V 89
- PARTS GUIDE 91
- INTEGRATED CIRCUITS 92
- TRANSISTORS 92
- TRANSFORMERS 92
- VARIABLE RESISTORS 93
- VIBRATORS 93
- CAPACITORS 93
- DESCRIPTIONNO 94
- PART CODE NO. PARTS CODE 94
- DESCRIPTION 94
- RESISTORS 95
- DESCRIPTIONPARTS CODE 97
- NO. PART CODE 97
- OTHER CIRCUITRY PARTS 98
- MD MECHANISM PARTS 99
- CD MECHANISM PARTS 100
- CHANGER MECHANISM 100
- CABINET PARTS 100
- OTHER SERVICE PARTS 101
- SPEAKER BOX PARTS 101
- ACCESSORIES 101
- MAIN UNIT 107
- Pad, Remote 107
- Remote Control 107
- ALL RIGHTS RESERVED 108
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