Display Board, KB Board, KEY-SW Board, HP Board | Sony MDS-JE770

MDS-JE770

6-9. PRINTED WIRING BOARD – DISPLAY SECTION – • See page 36 for Circuit Board Location.

There are a few cases that the part isn’t mounted in model is printed on diagram.

1		2	3
	DISPLAY BOARD

4

5

6

7

8

9

10

11

12

13

A

B

C

JW704		JW711	JW712	JW713	JW714	JW715	JW716
JW703
	JW709
	JW709						C766
	JW708						C766
	JW708						60
	JW707		R766				60
	JW707		R766				61
	JW706						61
	JW706
	JW705		JW710
JW702
	73
	71
	Q775
	JW701
	E
	R775
	8

1 CN710

JW717

41 40

IC760

21

20

80 1

LP719

C771

C767

C768

R767

R763

R761

LP710

Q761

E

DISPLAY

R768

R769

R770

C769

C770

JW719

C761

C762

JW720

JW721

JW722

R764

R762

C760

JW726

JW718

Q762

E

C753

FL750

FLUORESCENT

R721

TUBE

JW727

2

JW728

1

JW729

JW725

JW724

JW723

JW730

S721

EJECT

A

C751

JW731

D775

JW732

MDLP

LP750

R715

JW735

JW733

JW738

S704

M

S715

INPUT

R716

	S706
	H
JW734	C700

CN700

	S703
	M	S701
		S701
		REC
		z
	R704
	R705
	S716
	REC MODE
		R702
		R703
	S705
	X
	S702
	x
	R706
	JW737	C720
	JW736	C720
	JW736
	JW739	LP720

S714
CLEAR
		3	2	1
R712
	5	S713		4
		S713
S711	l		AMS	L
MENU/	PUSH ENTER
NO

R714

R713

S712

YES

1-681-741- 11

(11)

D

C

MAIN	KB BOARD	MAIN
BOARD E
		BOARD
CN830

E

KEY–SW BOARD

LP740

S726

I/

R747

C740
	S746
	TIMER
REC	OFF	PLAY	C743
		OUT GND VCC	C743
	IC740

LP730

C742

	S722			S723
	S722			REPEAT
	PLAY MODE			REPEAT
	PLAY MODE
				R723
			S733	S732
			GROUP	GROUP
				SKIP
	R1733	JW752	D733
			Q733
				E
				E
	R742

	S724
	LEVEL/
	DISPLAY/CHAR
	R724	R725
		S731
		TIME
	R733	R732
	R726	Q726
	R726	E
		E
		CN720
		8

(Page 45)	CN2780	6	1	CN3
				(Page 45)

PC LINK

KEY BOARD

J780

R1785		R1781	L1782
		L1786
L1783					L1784
L783	L785	L781
			R782	R786	L784

HP BOARD

	MAIN	3	L799
	BOARD	D
	CN390	1	R791
	CN390	CN790	R791
	(Page 45)	CN790
	(Page 45)
		RV790	R796
			R796

		L1790
C791	C796	J790
		PHONES

F

D726 STANDBY

R741

R722

R1726

JW750

JW751

	1
	1-681-742-	11
	1-681-742-	(11)
		(11)

65

43

2 1

	11
1-681-744-	(11)

RV790

PHONE

LEVEL

1-681-743-

(CHASSIS)

MDS-JE770

E 51499

11

(11)

•Semiconductor

Location

Ref. No.	Location

D726	F-1
D733	E-4
D775	C-7
IC740	F-3
IC760	A-4
Q726	E-6
Q733	E-5
Q761	A-7
Q762	A-7
Q775	B-2

46 46

Image 46

Sony MDS-JE770 specifications Display Board, KB Board, KEY-SW Board, HP Board

Contents

MDS-S50 Specifications873-890-11 MDM-7A MDS-JE770 Genera l Power requirementsSupplied accessories SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Diagrams Table of ContentsDisassembly Exploded Views MDS-JE770 Section Service Notes Flexible Circuit Board Repairing JIG for Checking BD Board Waveform IOP Record Precedure KSN-260E Optical PICK-UP Block Type Discrimination Forced Reset Checks Prior to Parts Replacement and AdjustmentsMain Board Component Side Retry Cause Display Mode Bit Binary Higher Bits Lower Bits Hexa Details Bit When BinaryHexadecimal Binary MDS-JE770 Section General Button Descriptions MDS-JE770 Section Disassembly Disassembly Flow Front Panel Section Main Board Two screws Mechanism Deck Section MDM-7A Over Light Head HR901, BD Board Holder Assy Loading Motor Assy M103 Sled Motor Assy M102, Slider Optical PICK-UP Spindle Moter Assy M101 Setting the Test Mode MDS-JE770 Section Test ModePrecautions for USE of Test Mode Exiting the Test Mode Selecting the Test Mode Operating the Continuous Playback Mode MENU/NO Error rate display Test Mode DisplaysMode display Functions of Other Buttons Automatic SELF-DIAGNOSIS Function When Memory NG is DisplayedMeanings of Other Displays Information Parts Replacement and Adjustment MDS-JE770 Section Electrical AdjustmentsCheck before replacement Adjustment flow Auto Gain Control Output Level Precautions for Adjustments Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK- UP KMS-260B/260E Temp Adjust Using the Continuously Recorded Disc Checks Prior to Repairs Traverse Check Auto CheckOther Checks Traverse Waveform Focus Bias Check Play Check MO Error Rate CheckCD Error Rate Check Self-Recording/playback Check Temperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Traverse Adjustment Iop NV Save Focus Bias Adjustment CD Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment MO Auto Gain Control Output Level Adjustment Adjusting Points and Connecting Points MDS-JE770 Section Diagrams Circuit Boards Location BD Board For schematic diagramsFor printed wiring boards Main Board IC171 Block Diagrams BD SectionIC190 IC360 2/2 Main SectionIC1 2/2 Optical Pick UP Block SemiconductorOVERSemiconductor Write Head Board Board Main Main Schematic Diagram Main /2 See page 51 for IC Block Diagrams Model is printed on diagram IC1 KEY-SW Board Display BoardKB Board HP Board Schematic Diagram Display Section LED Drive D910 RY910C951 C952 CN921 C924 LF900 C910 Schematic Diagram Power Section Main IC Block Diagrams IC101 CXA2523AR BD Board IC500 AK4524 Main Board IC101 CXA2523AR RF Amplifier BD Board IC PIN Function DescriptionPin No Pin Name Description Pin No Pin Name Desription Asyi MvciAsyo Avdd Frdr TfdrFfdr FS4 Fldt IIC PowerADA.RESET Flck DINT1/H Clip ADA. LatchEPN Protect Beep SW TimerSTB REC Flcs VFL1 ResetVDISP1 OSC0 Section Exploded Views Chassis Section FL750 1-517-987-11 Indicator TUBE, Fluorescent Not supplied Supplied with J790 FL750 With RV790 Mechanism MDM-7A Motor ASSY, Sled HEAD, Over LightMotor ASSY, Spindle Motor ASSY, Loading MDS-JE770 Section Electrical Parts List Jumper Resistor SwitchMetal Chip Short MDS-JE770 Display HP KB KEY-SW KEY-SW Main MDS-JE770 Main 2SD2144S-TP-UVW Resistor MDS-JE770 Main PT VOL-SEL Memo MDS-JE770 Revision History