Sharp MD-R3 manuals

Sharp MD-R3 Service Manual (92 pages)

Brand: Sharp | Category: CD players | Size: 5.07 MB |

English

Table of contents

SERVICE MANUAL

1

SPECIFICATIONS

2

IMPORTANT SERVICE NOTES

2

NAME OF PARTS

3

OPERATION MANUAL

4

TROUBLESHOOTING

5

(Continued)

6

Guía rápida

7

DISASSEMBLY

8

Turn clockwise the

9

CD mechanism up to

9

the uppermost position

9

Display PWB

10

CD MECHANISM SECTION

11

MD MECHANISM SECTION

12

Spindle Motor

13

Turntable

13

Ø1.7x2.5mm

13

Extension cable

14

Setting the CD TEST mode

14

2. Adjusting the servo unit

15

CD SERVO PWB

16

TEST MODE

17

MD SECTION

18

Loosen the 

19

Lead-In Switch

19

Mechanism Switch PWB

19

[ H B o : _ _ ]

21

[ H E o : _ _ ]

21

[ H F o : _ _ ]

21

7. MANUAL adjustment mode

22

High reflection disc

22

Low reflection disc

22

8. EEPROM setting mode

23

[ H A L S O F_ _ ]

25

[ L A L S O F S_ ]

25

[ G A L S O F S_ ]

25

9. TEST-PLAY mode

26

11. INNER mode

27

10. TEST-REC mode

27

1pin of IC 1201 (TP1274)

28

88 pin of IC 1201 (TP1275)

28

EXPLANATION OF ERROR DISPLAY

29

-PROM Setting Mode Chart

32

Figure 32

32

NOTES ON SCHEMATIC DIAGRAM

33

POWER+7V

35

IX0240AW

36

SYSTEM MICROCOMPUTER

36

VOUTR,VOUTL

37

REGULATOR

38

MAIN CAM SWITCH

39

TO MAIN PWB

39

HOE-LD-PD

40

CD MOTOR PWB-G

40

PICKUP UNIT

40

M65821FP

41

SERVO/SIGNAL CONTROL

41

SIGNAL PROCESSOR

41

CD CHANGER PWB-D

42

8 9 10 11 12

43

MIC PWB-B3

44

SWITCH PWB-B5

44

SWITCH PWB-B4

44

MD SWITCH PWB-G

48

MD MAIN PWB-E

49

MAIN PWB-A

51

COLOR TABLE

52

TRAY SWITCH PWB-H

53

PICK UP UNIT

54

CD SERVO PWB-C

54

MD PICKUP UNIT

55

MD MECHANISM SWITCH PWB-F

55

MD MAIN PWB - E (TOP VIEW)

56

VOLTAGE (MD MAIN PWB)

58

WAVEFORMS OF CD CIRCUIT

59

WAVEFORMS OF MD CIRCUIT

60

D/A CONVERSION PLAY

61

CD fails to operate

62

(FE OUT)

63

(FS OUT)

63

1~2 sec

64

Rotation cycle of motor

65

Voltage varies depending

65

When MD fails operate

66

• Normal playback

68

• Audio playback circuit

68

• Focus servo failure

69

• Disc motor fails to run

70

• Tracking servo failure

70

• Slide servo failure

70

FUNCTION TABLE OF IC

71

MICROCOMPUTER

72

REF — + 3.15V

77

TRG Input Connect +B

77

LR376481

78

PARTS GUIDE

79

VIBRATORS

80

DESCRIPTIONPARTS CODE

81

NO. PART CODE

81

DESCRIPTION

81

RESISTORS

82

OTHER CIRCUITRY PARTS

84

MECHANICAL PARTS

84

CD MECHANISM PARTS

85

CHANGER MECHANISM

85

CABINET PARTS

85

ACCESSORIES

86

OTHER SERVICE PARTS

86

Silicon

90

PACKING OF THE SET

91

ALL RIGHTS RESERVED

92

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