Sony MDS-JE770 specifications Schematic Diagram Display Section, LED Drive

Page 47

6-10. SCHEMATIC DIAGRAM – DISPLAY SECTION –

IC740

NJL74H400A

S724

LEVEL/DISPLAY/CHAR

MDS-JE770

	REMOTE	R726
	CONTROL	JW
	CONTROL
	RECEIVER
		S726
		I/
R741
100		C742
		C742
C730	C743	100
0.1	0.01	10V

R725 47k

R733 3.3k

S733

GROUP

R724	R723	R722
4.7k	3.3k	2.2k
	S723	S722
	REPEAT	PLAY MODE
	R732
	2.2k
	S732	S731
GROUP SKIP		TIME

CN720 8P

POWER LED 3.3V KEY2 GND RM ALBUM LED KEY3 TIMER

CN710 8P

POWER LED 3.3V KEY2 GND RM ALBUM LED KEY3 TIMER

	S721
S713
ENCODER
AMS	EJECT

	KEY3
	TIMER
	P.DOWN
C700	SYS 3.3
C700
22	AC
6.3V	AC
	AC
	-32
	DISPLAY.GND
	DISPLAY.GND
	RMC
	RMC
	FLCS
	FCLK
	FCLK
	FLDT
	FLDT
	KEY0
	JOG0
	KEY1

CN700 17P

MAIN(1/2) BOARD CN3 (Page43)

R742	R1726	R1733
47	220	220
S746	D726	D733	R716	R715
TIMER	SEL5221S-TP15	SEL5821A-TP15	R716	R715
TIMER			33k	10k
	STANDBY	GROUP
R747			S716	S715
10k			S716	S715
REC
OFF			REC MODE	INPUT
			REC MODE	INPUT
PLAY	Q726
C740	UN4211-TA	Q733
C740	LED DRIVE	UN4211-TA
0.1	LED DRIVE	LED DRIVE
0.1

LP730

LP740

R775

220

D775

SEL5821A-TP15

MD LP

S18

S17

S16

S15

S14

S13

S12

S11

S10

S09

S08

S07

S06

S05

S04

S03

S02

S01

S39

S38

Q775

UN4211-TA

LED DRIVE

C760

22

6.3V

/PUSH ENTER
		R714	R713	R712
		4.7k	3.3k	2.2k
		S714		S712	S711
		CLEAR	YES	MENU/NO
R706	R705	R704	R703	R702
33k	10k	4.7k	3.3k	2.2k
S706	S705	S704	S703	S702	S701
				REC

JOG1

KEY2

C720 0.1

(CHASSIS)

S19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG09

SEG08

SEG07

SEG06

SEG05

SEG04

SEG03

SEG02

SEG01

AD4

AD3

S37

SEG19

AD2

S20

SEG20

AD1

S36

S21

SEG21

VDISP2

S22

SEG22

NC

S23

SEG23

VFL2

S24

SEG24

P4

S25

SEG25

P3

S26

SEG26

P2

C771

0.1

S27

SEG27

P1

S28

SEG28

IC760

VDD

R770

MSM9201-04GS-K

100

S29

SEG29

DA

R769

100

S30

SEG30

CP

R768

100

S31

SEG31

FL/LED

CS

R767

100

S32

SEG32

DRIVER

RESET

R766

3.3k

S33

SEG33

OSCO

C770

C768

C769

0.001

S34

C766

C767

SEG34

OSCI

0.001

0.001

39p

0.1

S35

SEG35

GND

R762

Q762

VDISP1

VFL1

100

2SC2603TP-EF

FL DRIVE

G01

COM01

COM24

Q761

G02

COM02

COM23

2SC2603TP-EF

COM03

COM04

COM05

COM06

COM07

COM08

COM09

COM10

COM11

COM12

COM13

COM14

COM15

COM16

COM17

COM18

COM19

COM20

COM21

COM22

R761

FL DRIVE

100

R763

R764

100k

100k

G03

G04

G05

G06

G07

G08

G09

G10

G11

G12

G13

G14

G15

G16

G17

G18

G19

G20

G21

G22

C761

C762

0.001

0.001

C751

C753

10

10

50V

50V

G01

G02

G03

G04

G05

G06

G07

G08

G09

G10

G11

G12

G13

G14

G15

G16

G17

G18

G19

G20

G21

G22

G23

G24

S36

S37

S38

S39

S01

S02

S03

S04

S05

S06

S07

S08

S09

S10

S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

S30

S31

S32

S33

S34

S35

FL750

FLUORESCENT

INDICATOR

TUBE

		CN2780
		6P
		STBY.5V
		IIC CLK
		IIC DATA
		GND
	MAIN(2/2)	IIC BUSY
	BOARD	IIC BUSY
	BOARD	IIC POWER
	CN830	IIC POWER
	(Page44)

	HP(L)
	GND
MAIN(1/2)	HP(R)
MAIN(1/2)
BOARD
CN390	CN790
(Page43)	WIRE(3P)
(Page43)

		L1782
		JUMPER
		R1785
		220
L1784
JUMPER
		R1781
		220
L1783 JUMPER
	L1786
	JUMPER
	R791
	10
	C791
L799	470p
JW
		L1790
		0∝H
	R796	C796
RV790	10	470p
1k/1k

	J780
	PC LINK
	(KEY BOARD)
R786	L785
100	JUMPER

L784

JUMPER

R782 100

L781

JUMPER

L783

JUMPER

J790

PHONES

PHONE LEVEL

(CHASSIS)

4747

Image 47

Contents MDM-7A Specifications873-890-11 MDS-S50SELF-DIAGNOSIS Function Genera l Power requirementsSupplied accessories MDS-JE770Items of Error History Mode Items and Contents Exploded Views Table of ContentsDisassembly DiagramsFlexible Circuit Board Repairing MDS-JE770 Section Service NotesIOP JIG for Checking BD Board WaveformRecord Precedure Optical PICK-UP Block Type Discrimination KSN-260EMain Board Component Side Checks Prior to Parts Replacement and AdjustmentsForced Reset Bit Binary Retry Cause Display ModeHexadecimal Binary Bit When BinaryHigher Bits Lower Bits Hexa Details Button Descriptions MDS-JE770 Section GeneralDisassembly Flow MDS-JE770 Section DisassemblyFront Panel Section Two screws Main BoardOver Light Head HR901, BD Board Mechanism Deck Section MDM-7ALoading Motor Assy M103 Holder AssyOptical PICK-UP Sled Motor Assy M102, SliderSpindle Moter Assy M101 Exiting the Test Mode MDS-JE770 Section Test ModePrecautions for USE of Test Mode Setting the Test ModeSelecting the Test Mode MENU/NO Operating the Continuous Playback ModeFunctions of Other Buttons Test Mode DisplaysMode display Error rate displayInformation When Memory NG is DisplayedMeanings of Other Displays Automatic SELF-DIAGNOSIS FunctionCheck before replacement MDS-JE770 Section Electrical AdjustmentsParts Replacement and Adjustment Auto Gain Control Output Level Adjustment flowTemp Adjust Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK- UP KMS-260B/260E Precautions for AdjustmentsChecks Prior to Repairs Using the Continuously Recorded DiscTraverse Waveform Auto CheckOther Checks Traverse CheckSelf-Recording/playback Check Play Check MO Error Rate CheckCD Error Rate Check Focus Bias CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjutment Iop NV Save Traverse AdjustmentFocus Bias Adjustment MO Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment CD Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points Circuit Boards Location MDS-JE770 Section DiagramsMain Board For schematic diagramsFor printed wiring boards BD BoardIC190 Block Diagrams BD SectionIC171 IC1 2/2 Main SectionIC360 2/2 Write Head SemiconductorOVERSemiconductor Optical Pick UP BlockBoard Board Main Main Schematic Diagram Main /2 See page 51 for IC Block Diagrams IC1 Model is printed on diagramHP Board Display BoardKB Board KEY-SW BoardLED Drive Schematic Diagram Display SectionCN921 C924 LF900 C910 RY910C951 C952 D910Main Schematic Diagram Power SectionIC101 CXA2523AR BD Board IC Block DiagramsIC500 AK4524 Main Board Pin No Pin Name Description IC PIN Function DescriptionIC101 CXA2523AR RF Amplifier BD Board Pin No Pin Name Desription Avdd MvciAsyo AsyiFS4 TfdrFfdr FrdrFlck IIC PowerADA.RESET FldtProtect ADA. LatchEPN DINT1/H ClipREC Flcs TimerSTB Beep SWOSC0 ResetVDISP1 VFL1Chassis Section Section Exploded ViewsNot supplied Supplied with J790 FL750 With RV790 FL750 1-517-987-11 Indicator TUBE, FluorescentMechanism MDM-7A Motor ASSY, Loading HEAD, Over LightMotor ASSY, Spindle Motor ASSY, SledMDS-JE770 Section Electrical Parts List Short SwitchMetal Chip Jumper ResistorMDS-JE770 Display HP KB KEY-SW KEY-SW Main MDS-JE770 Main 2SD2144S-TP-UVW Resistor VOL-SEL MDS-JE770 Main PTMemo MDS-JE770 Revision History