Sony MDS-JE770 specifications KSN-260E, Optical PICK-UP Block Type Discrimination

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MDS-JE770

OPTICAL PICK-UP BLOCK TYPE DISCRIMINATION

There are two types of the optical pick-up block in this model.

These are compatible except for the laser power.

Check the type of the optical pick-up block before replacement.

Ajdust following items after replacing the optical pick-up block.

•5-6-2. Laser Power Check (See page 28)

•5-10. LASER POWER ADJUSTMENT (See page 31)

Differences

		KMS-260B	KMS-260E

	Color of the adhesive agent at PDIC portion	Pink	White

	Form of FPC retainer plate	Close the hole on SL base	Not close the hole on SL base

	APC variable resistor	Small volume (2 type)	Big variable resistor (3 type) and chip resistor (Fig. A)

			Small variable resistor (2 type) and chip resistor (Fig. B)
			Small variable resistor (2 type) and chip resistor (Fig. B)

KSN-260B

Hold on SL base

Fig. B type is for repair.

• Abbreviation

260B: KMS-260B model

260E: KMS-260E model

KSN-260E

Hold on SL base

FPC retainer plate

APC variable	Adhesive agent at
resistor	PDIC portion

(Fig A)

CHIP

3 type variable resistor

(Fig B)

CHIP

2 type variable

resistor

Adhesive agent at	FPC retainer plate
Adhesive agent at
PDIC portion

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Contents Specifications 873-890-11MDS-S50 MDM-7AGenera l Power requirements Supplied accessoriesMDS-JE770 SELF-DIAGNOSIS FunctionItems of Error History Mode Items and Contents Table of Contents DisassemblyDiagrams Exploded ViewsMDS-JE770 Section Service Notes Flexible Circuit Board RepairingJIG for Checking BD Board Waveform IOPRecord Precedure KSN-260E Optical PICK-UP Block Type DiscriminationMain Board Component Side Checks Prior to Parts Replacement and AdjustmentsForced Reset Retry Cause Display Mode Bit BinaryHexadecimal Binary Bit When BinaryHigher Bits Lower Bits Hexa Details MDS-JE770 Section General Button DescriptionsMDS-JE770 Section Disassembly Disassembly FlowFront Panel Section Main Board Two screwsMechanism Deck Section MDM-7A Over Light Head HR901, BD BoardHolder Assy Loading Motor Assy M103Sled Motor Assy M102, Slider Optical PICK-UPSpindle Moter Assy M101 MDS-JE770 Section Test Mode Precautions for USE of Test ModeSetting the Test Mode Exiting the Test ModeSelecting the Test Mode Operating the Continuous Playback Mode MENU/NOTest Mode Displays Mode displayError rate display Functions of Other ButtonsWhen Memory NG is Displayed Meanings of Other DisplaysAutomatic SELF-DIAGNOSIS Function InformationCheck before replacement MDS-JE770 Section Electrical AdjustmentsParts Replacement and Adjustment Adjustment flow Auto Gain Control Output LevelPrecautions for Checking Laser Diode Emission Precautions for USE of Optical PICK- UP KMS-260B/260EPrecautions for Adjustments Temp AdjustUsing the Continuously Recorded Disc Checks Prior to RepairsAuto Check Other ChecksTraverse Check Traverse WaveformPlay Check MO Error Rate Check CD Error Rate CheckFocus Bias Check Self-Recording/playback CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjutment Traverse Adjustment Iop NV SaveFocus Bias Adjustment Error Rate Check Auto Gain Control Output Level AdjustmentCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points MDS-JE770 Section Diagrams Circuit Boards LocationFor schematic diagrams For printed wiring boardsBD Board Main BoardIC190 Block Diagrams BD SectionIC171 IC1 2/2 Main SectionIC360 2/2 SemiconductorOVER SemiconductorOptical Pick UP Block Write HeadBoard Board Main Main Schematic Diagram Main /2 See page 51 for IC Block Diagrams Model is printed on diagram IC1Display Board KB BoardKEY-SW Board HP BoardSchematic Diagram Display Section LED DriveRY910 C951 C952D910 CN921 C924 LF900 C910Schematic Diagram Power Section MainIC Block Diagrams IC101 CXA2523AR BD BoardIC500 AK4524 Main Board Pin No Pin Name Description IC PIN Function DescriptionIC101 CXA2523AR RF Amplifier BD Board Pin No Pin Name Desription Mvci AsyoAsyi AvddTfdr FfdrFrdr FS4IIC Power ADA.RESETFldt FlckADA. Latch EPNDINT1/H Clip ProtectTimer STBBeep SW REC FlcsReset VDISP1VFL1 OSC0Section Exploded Views Chassis SectionFL750 1-517-987-11 Indicator TUBE, Fluorescent Not supplied Supplied with J790 FL750 With RV790Mechanism MDM-7A HEAD, Over Light Motor ASSY, SpindleMotor ASSY, Sled Motor ASSY, LoadingMDS-JE770 Section Electrical Parts List Switch Metal ChipJumper Resistor ShortMDS-JE770 Display HP KB KEY-SW KEY-SW Main MDS-JE770 Main 2SD2144S-TP-UVW Resistor MDS-JE770 Main PT VOL-SELMemo MDS-JE770 Revision History