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Sony MDS-JE770 specifications IC440

Models: MDS-JE770

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Page 44

IC440

MDS-JE770

6-7. SCHEMATIC DIAGRAM – MAIN SECTION (2/2) – • See page 51 for IC Block Diagrams.

IC440

M54641L

LOADING DRIVER

R441

22k

1

R442

Q440,445

Q440

15k

C442

REFERENCE

0.01

UN4211-TA

2

VOLTAGE

3

C441

R443

SWITCH

100

22k

4

16V

Q445

2SA1115TP-EF

5

D433

R432

R431

D431

1SS119-72

680

100

1SS119-72

C432

R433

C431

220

22

33

D432

25V

25V

1SS119-72

R434

22k

D409

11EQS04-NTAB2

IC401

6

BA033T

D408

11EQS04-NTAB2

7

+3.3V

IC406

M62016L

REGULATOR

D406

1SS133T-72

D401

RESET

11EQS04-NTA2B

D402

11EQS04-NTA2B

R406

220

C401

9

R407

CN406

10000

D403

D404

C932

C404

16V

C931

10k

2P

11EQS04-NTA2B

11EQS04-NTA2B

0.1

100

C402

0.1

10V

0.1

C406

C405

BT406

ML1220

0.33

0.01

50V

D411

8

11ES2-NTA2B

D412

11ES2-NTA2B

D461

C930

IC411

11ES2-NTA2B

0.1

M5F7805L

C412

0.1

C411

C461

+5V

10000

FB465

1000

D462

C941

C416

REGULATOR

16V

0∝H

35V

11ES2-NTA2B

0.1

1000

FB460

C942

6.3V

D466

0.1

C466

0∝H

1000

11ES2-NTA2B

35V

R423

100k

D467

FB410

JW

11ES2-NTA2B

MAIN

BOARD

(1/2)

(Page43)

R424

C425

R421

R425

220

22k

C422

C421

220

47

0.1

0.1

50V

10

11

R420

C423

12

JUMPER

100

D421

C424

63V

D422

0.1

11ES2-NTA2

RD4.7EB2

IC421

M5293L

13

14

-32V

REGULATOR

15

JW451

JUMPER

R911

16

2.2k

Q911

2SD2144S-TP-UVW

RELAY

17

R912

DRIVE

47k

JW452

JUMPER

18

19

R21

R821

R22

R822

20

10k

10k

10k

10k

R824

KB.DATA

4.7k

KB.CLK

Q35

CN830

UN4211-TA

L831

BUFFER

6P

JUMPER

R827

Q21

+5V

4.7k

UN4211-TA

Q822

R823

IIC/KB CLK

BUFFER

10k

Q821

2SC2603TP-EF

IIC/KB DATA

2SC2603TP-EF

R826

BUFFER

BUFFER

GND

10k

L834

IIC BUSY

KB

JUMPER

BOARD

IIC POWER

CN2780

UN4211-TA

FB832

33FB8

835FB

836FB

KB.CTL

(Page47)

Q34

R828

KEYBOARD

10k

OFF SWITCH

R825

10k

REW PO

LKC

TAAD

SYUB

IIC

IIC

IIC

IIC

R851

R855

5.6k

D851

R856

C853

J851

JUMPER

1SS133T-72

JUMPER

0.1

21

CONTROL

R852

A1

4.7k

Q851

22

2SC2603TP-EF

C851

A1 I/O

R853

0.1

10k

R854

C852

C855

C854

0.1

10

0.1

0.1

(CHASSIS)

44

CN400 11

5	PT
	BOARD
	CN921
	(Page49)
1
C940
0.1

EP940

EARTH

PLATE

(CHASSIS)

44

Image 44

Sony MDS-JE770 specifications IC440

Contents

SPECIFICATIONS 9-873-890-11MDS-JE770 MINIDISC DECKGenera l Power requirements Supplied accessoriesMDS-JE770 SELF-DIAGNOSISFUNCTIONMDS-JE770 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTSSelecting the Test Mode TABLE OF CONTENTS 3. DISASSEMBLY6. DIAGRAMS Table of Error CodesMDS-JE770 SECTION SERVICE NOTES Notes on chip component replacementFlexible Circuit Board Repairing NOTES ON LASER DIODE EMISSION CHECKJIG FOR CHECKING BD BOARD WAVEFORM MDS-JE770MDS-JE770 Record PrecedureDisplay Precedure OPTICAL PICK-UPBLOCK TYPE DISCRIMINATION MDS-JE770KSN-260B KSN-260ECHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS FORCED RESETProcedure @CN406MDS-JE770 RETRY CAUSE DISPLAY MODEProcedure Reading the Display MDS-JE770Reading the Display Hexadecimal t Binary Conversion TableMDS-JE770 SECTION GENERAL BUTTON DESCRIPTIONSMain unit Parts IdentificationMDS-JE770 SECTION DISASSEMBLY 3-1.DISASSEMBLY FLOW3-2.UPPER CASE 3-3.FRONT PANEL SECTION3Connector CN830 2 Connector CN390 1Wire flat type 17core CN3 5Claw3-4.MAIN BOARD 3-5.PT BOARD, VOL-SELBOARD SP model3 Connector CN400 2 Wire flat type 23core CN1 1 Wire flat type 27core CN2 7 MAIN board3-6.MECHANISM DECK SECTION MDM-7A 3-7.OVER LIGHT HEAD HR901, BD BOARDMDS-JE770 4 Remove the solder five portion3-8.HOLDER ASSY 3-9.LOADING MOTOR ASSY M103MDS-JE770 2 Claw3-10.SLED MOTOR ASSY M102, SLIDER 3-11.OPTICAL PICK-UPMDS-JE770 5 Remove the claw Shift the slider in the arrow3-12.SPINDLE MOTER ASSY M101 MDS-JE7702Spindle motor ASSY M101 1 Three screws M1.7, tapping4-1.PRECAUTIONS FOR USE OF TEST MODE 4-2.SETTING THE TEST MODEMDS-JE770 SECTION TEST MODE 4-3.EXITING THE TEST MODE4-5.SELECTING THE TEST MODE MDS-JE770Display Group4-5-1.Operating the Continuous Playback Mode MDS-JE7702. Error rate display 4-6.FUNCTIONS OF OTHER BUTTONS4-7.TEST MODE DISPLAYS 1. Mode display4-11.WHEN MEMORY NG IS DISPLAYED 4-8.MEANINGS OF OTHER DISPLAYS4-9.AUTOMATIC SELF-DIAGNOSISFUNCTION 4-10.INFORMATIONCheck before replacement MDS-JE770 SECTION ELECTRICAL ADJUSTMENTS5-1.PARTS REPLACEMENT AND ADJUSTMENT Adjustment flow MDS-JE7705-2.PRECAUTIONS FOR CHECKING LASER DIODE EMISSION 5-4.PRECAUTIONS FOR ADJUSTMENTSMDS-JE770 Optical pick-upflexible board5-5.USING THE CONTINUOUSLY RECORDED DISC 5-6-1.Temperature Compensation Offset CheckChecking Procedure 5-6-2.Laser Power Check5-6-4.Auto Check 5-6-5.Other Checks5-6-6.Traverse Check Procedure5-6-8.C PLAY Check MO Error Rate Check CD Error Rate Check5-6-7.Focus Bias Check 5-6-9. Self-Recording/playbackCheck5-7.INITIAL SETTING OF ADJUSTMENT VALUE 5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT5-10.LASER POWER ADJUSTMENT Setting Procedure5-12.TRAVERSE ADJUSTMENT 5-11.Iop NV SAVEProcedure Adjusting ProcedureMDS-JE770 5-13.FOCUS BIAS ADJUSTMENTAdjusting Procedure 5-14.ERROR RATE CHECK 5-16.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT5-14-1.CD Error Rate Check 5-14-2.MO Error Rate Check5-17.ADJUSTING POINTS AND CONNECTING POINTS BD BOARD SIDE ABD BOARD SIDE B MDS-JE770MDS-JE770 SECTION DIAGRAMS 6-1.CIRCUIT BOARDS LOCATIONPT board KEY-SWboard MAIN board HP board KB boardFor schematic diagrams For printed wiring boardsWAVEFORMS -BD Board MAIN Board6-2.BLOCK DIAGRAMS - BD SECTION MDS-JE770IC171 IC190MAIN SECTION IC310IC550 IC740Location PageSemiconductorOVER SemiconductorBD BOARD 2/2 Page BD BOARD 2/2 Page BD BOARD 2/2 MDS-JE770Page KMS - 260B/260EBOARD MDS-JE770MDS-JE770 Page44MDS-JE770 IC440Location SemiconductorMDS-JE770 Semiconductor MDS-JE770Location MDS-JE770 6-10.SCHEMATIC DIAGRAM - DISPLAY SECTION4747 PT BOARD MDS-JE770BOARD VOL-SEL6-12.SCHEMATIC DIAGRAM - POWER SECTION 4949MDS-JE770 MAIN BOARD 2/2 CN400 Page6-13.IC BLOCK DIAGRAMS IC101 CXA2523AR BD BOARDIC151 CXD2662R BD BOARD IC141IC500 AK4524 MAIN BOARD IC440 M54641L MAIN BOARDIC421 M5293L MAIN BOARD MDS-JE770MDS-JE770 6-14.IC PIN FUNCTION DESCRIPTIONIC101 CXA2523AR RF Amplifier BD BOARD MDS-JE770 Pin NoPin Name DesriptionPLL Phase Locked Loop MDS-JE770Abbreviation EFM Eight to Fourteen Modulation VCO Voltage Controlled OscillatorMDS-JE770 TFDRIC1 M30803MG-106FPSYSTEM CONTROL MAIN BOARD MDS-JE770Pin No Pin NameMDS-JE770 ADA. LATCHMDS-JE770 BEEP SWIC760 MSM9201-04GS-KFL DRIVER DISPLAY BOARD MDS-JE770MDS-JE770 SECTION EXPLODED VIEWS7-1.CHASSIS SECTION 7-2.FRONT PANEL SECTION MDS-JE770not supplied supplied with J7907-3.MECHANISM SECTION-1 MDM-7A MDS-JE770312 313S102 HR901M103 MDS-JE770MDS-JE770 ELECTRICAL PARTS LISTSECTION MDS-JE770 Ref. NoMDS-JE770 DISPLAY HP KB KEY-SW MDS-JE770 KEY-SWMAIN MDS-JE770 MAIN MDS-JE770 MAIN Q490MDS-JE770 MAIN PT VOL-SELMEMO MDS-JE770MDS-JE770 REVISION HISTORY DateDescription of Revision 2001.05