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Sony MDS-JB920 service manual 71, IC121, CXD2654R, IC152 BH6511FS-E2

Models: MDS-JB920

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IC121

IC121

CXD2654R

EFMO

DVSS

TEST3

TEST2

TEST1

FGIN

SPFD

SPRD

SFDR

SRDR

FS4

FRDR

FFDR

DVDD

TFDR

TRDR

LDDR

APCREF

DTRF

CKRF

XLRF

F0CNT

ADFG

APC

DCHG

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

SPINDLE

PWM

AUTO SEQUENCER

MNT0

1

SERVO

GENERATOR

75 TE

74 SE

MNT1

2

MONITOR

EACH

73

AVSS

MNT2

3

CONTROL

BLOCK

MNT3

4

ADIP

72

ADRB

71

ADRT

DECODER

70

AVDD

SWDT

5

69

ADIO

SCLK

6

XLAT

7

CPU I/F

EACH

68

VC

SRDT

8

BLOCK

SERVO

A/D

67

AUX1

DSP

CONVERTER

SENS

9

ANALOG

66 FE

XRST

10

MUX

65

ABCD

64

BOTM

SQSY

11

SUBCODE

63

PEAK

DQSY

12

PROCESSOR

RECP

13

62

CLTV

61

FILO

PLL

60

FILI

EFM/ACIRC ENCODER/ DECODER

59

PCO

XINT

14

SHOCK RESISTANT

MEMORY CONTROLLER

TX

15

58

AVSS

OSCI

16

CLOCK

EACH

OSCO

17

GENERATOR

BLOCK

XTSL

18

57

RFI

DIGITAL

SAMPLING

COMP

DIN0

19

56

BIAS

AUDIO

RATE

DIN1

20

55

AVDD

I/F

CONVERTER

54

ASYI

DOUT

21

53

ASYO

DATAI	22	ATRAC
LRCKI	23	ENCODER/DECODER
XBCKI	24
ADDT	25	52 MVCI

													ADDRESS/DATA BUS A00 - A11, D0 - D3														51	D3
	26	27	28	29	30			31	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47	48	49	50
	DADT	LRCK	XBCK	FS256	DVDD			A03	A02	A01	A00	A10	A04	A05	A06	A07	A08	A11	DVSS	XOE	XCAS	A09	XRAS	XWE	D1	D0	D2
IC152 BH6511FS-E2
CAPA–	CAPA+		IN2R		IN2F	VM2	OUT2F		PGND2		OUT2R		VM12		OUT1R		PGND1		OUT1F		VM1		IN1F		IN1R		VDD
32	31		30		29	28	27		26		25		24		23		22		21		20		19		18		17
			INTERFACE				AMP				AMP				AMP					AMP			INTERFACE				VDD
CHARGE					PREDRIVE																PREDRIVE
PUMP.
	OSC
					PREDRIVE																PREDRIVE
			INTERFACE				AMP				AMP				AMP					AMP			INTERFACE				PSB
1	2		3		4	5	6		7		8		9		10		11		12		13		14		15		16
GND	VG		IN4R		IN4F	VM4	OUT4F		PGND4		OUT4R		VM34		OUT3R		PGND3		OUT3F		VM3		IN3F		IN3R		PSB
																				– 71 –

Image 55

Sony MDS-JB920 service manual 71, IC121, CXD2654R, IC152 BH6511FS-E2

Contents

MINI DISC DECK SPECIFICATIONSSERVICE MANUAL MDS-JB920– 2 – SELF-DIAGNOSISFUNCTIONSelecting the Test Mode Items of Error History Mode Items and Contents– 3 – Table of Error CodesDISASSEMBLY TABLE OF CONTENTS6.DIAGRAMS SECTION SERVICING NOTESADVARSEL – 5 –Flexible Circuit Board Repairing Notes on chip component replacementJIG FOR CHECKING BD BOARD WAVEFORM Record Precedure – 7 –Display Precedure Procedure Checks Prior to Parts Replacement and AdjustmentsForced Reset – 8 –Fig. 1 Reading the Test Mode Display – 9 –Retry Cause Display Mode PrecedureReading the Display – 10 –Hexadecimal nBinary Conversion Table • Front view • Rear view SECTION GENERAL– 11 – LOCATION OF CONTROLS– 12 – – 13 – SECTION – 14 –CASE DISASSEMBLYFRONT PANEL SECITON – 15 –MAIN BOARD MECHANISM SECTION MDM-5A – 16 –SLIDER CAM BASE UNIT MBU-5A,BD BOARD – 17 –SW BOARD, LOADING MOTOR M103 – 18 – 1. PRECAUTIONS FOR USE OF TEST MODE2. SETTING THE TEST MODE SECTION TEST MODE5. SELECTING THE TEST MODE – 19 –5-1.Operating the Continuous Playback Mode – 20 –5-3. Non-VolatileMemory Mode EEP MODE 4.Auto gain display Not used in servicing – 21 –6. FUNCTIONS OF OTHER BUTTONS 7. TEST MODE DISPLAYSMEANINGS OF OTHER DISPLAYS – 22 –1.PARTS REPLACEMENT AND ADJUSTMENT SECTION ELECTRICAL ADJUSTMENTS– 23 – – 24 – 2. PRECAUTIONS FOR CHECKING LASER DIODE EMISSINON4. PRECAUTIONS FOR ADJUSTMENTS Laser power meterChecking Procedure – 25 –6. CHECK PRIOR TO REPAIRS 6-1.Temperature Compensation Offset Check6-4.Focus Bias Check – 26 –6-5.C PLAY Checking MO Error Rate Check CD Error Rate Check– 27 – 7. INITIAL SETTING OF ADJUSTMENT VALUE9. TEMPERATURE COMPENSATION OFFSET ADJUTMENT 10. LASER POWER ADJUSTMENTConnection 11. TRAVERSE ADJUSTMENTSpecification Adjusting Procedure– 29 – 12.FOCUS BIAS ADJUSTMENT14. FOCUS BIAS CHECK 13.ERROR RATE CHECK15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT – 30 –BD BOARD SIDE B 16. ADJUSTING POINTS AND CONNECTING POINTS– 31 – BD BOARD SIDE A– 32 – SECTION DIAGRAMS6-1.IC PIN FUNCTION DESCRIPTION •BD BOARD IC121 CXD2654R – 33 –– 34 – – 35 – •MAIN BOARD IC100 CXD8607N A/D CONVERTER – 36 –– 37 – – 38 – – 39 – MDS-JB920– 40 – MDS-JB920 BLOCK DIAGRAM – SERVO Section –– 41 – – 42 –MDS-JB920 6-3.BLOCK DIAGRAM – MAIN Section –– 43 – – 44 –Note on Schematic Diagram – 45 –– 46 – • Circuit Boards Location•See page 45 for Circuit Boards Location 6-5.PRINTED WIRING BOARDS – BD Section –– 47 – – 48 –Page – 49 –– 50 – MDS-JB920MDS-JB920 6-7.SCHEMATIC DIAGRAM – BD Section 2/2 – See•– 51 – – 52 –• Waveforms – 53 –– 54 – MDS-JB920Page Page Page Page Page Page – 55 –– 56 – MDS-JB920– 58 – – 57 –MDS-JB920 Page Page Page Page – 59 –– 60 – MDS-JB920– 62 – – 61 –MDS-JB920 MDS-JB920 – 63 –• Semiconductor Location US, CND – 66 –MDS-JB920 US, CNDPage Page Page Page – 67 –– 68 – MDS-JB920– 70 – 6-15.SCHEMATIC DIAGRAM - BD SWITCH SectionPRINTED WIRING BOARD – BD SWITCH Section – – 69 –IC152 BH6511FS-E2 – 71 –IC121 CXD2654RCXD8607N – 72 –– MAIN Board – IC100IC200 – 73 –CXD8767N LA5632 IC300SN74HC153ANS IC7002 16 17 18 SECTION EXPLODED VIEWS– 75 – 1 CHASSIS SECTION 562 FRONT PANEL SECTION 63 – 76 –59 58 206 201 – 77 –3MECHANISM SECTION MDM-5A 223 207 203 2254BASE UNIT SECTION MBU-5A 252 – 78 –254 AC BAT BD SECTION ELECTRICAL PARTS LIST– 79 – – 80 – – 81 – DISP– 82 – MAINMAIN MAIN – 84 –MAIN – 85 –MAIN – 87 – SW VOLHome A&V Products Company MDS-JB920Sony Corporation 9-922-869-11