Sony 4-216-349-5, Singapore model, Hong Kong model service manual Base Unit Section MBU-5A, 251 252

Page 52

7-4. BASE UNIT SECTION (MBU-5A)

		252 265
		264	266	HR901
			266	271
			#5	271
			#5
263		#4	267
263		#4		268
270		272		268
270		#4
not supplied		262	269
not supplied		262
		261	#4	255
#4			#4	255
#4
not supplied		#6		256
		#6		256
				259
M101	S102	#5		260
		#5		258

		#4
		#4
	254
			257
		#4	252
	253		252
	253
		M102

251

252

The components identified by mark !or dotted line with mark

!are critical for safety. Replace only with part number specified.

Les composants identifiés par une marque !sont critiques pour la sécurité.

Ne les remplacer que par une piéce portant le numéro spécifié.

Ref. No.

Part No.

Description

Remark

251A-4699-893-A BD BOARD, COMPLETE

2523-372-761-01 SCREW (M1.7), TAPPING

*253 4-996-267-01 BASE (BU-D)

*254 4-996-255-01 BASE (BU-C)

2554-900-590-01 SCREW, PRECISION SMALL

2564-996-258-01 SPRING, COMPRESSION

2574-996-262-01 GEAR (SL-C)

*258 1-667-954-11 FLEXIBLE BOARD

*259 4-210-664-11 BASE (BU-A)

!260	8-583-028-01 OPTICAL PICK-UP KMS-260A/K1NP

*261 4-996-252-01 CHASSIS, BU

*262 4-996-254-01 BASE (BU-B)

263 4-967-688-11 MAGNET, ABSORPTION

Ref. No.

Part No.

Description

Remark

2644-996-260-01 GEAR (SL-A)

2654-996-261-01 GEAR (SL-B)

2664-996-264-01 SPRING (SHAFT), LEAF

2674-996-265-01 SHAFT, MAIN

2684-996-256-11 SL (BASE)

2694-996-257-01 RACK (SL)

2704-996-263-01 SPRING (CLV), TORSION

2714-988-560-01 SCREW (+P 1.7X6)

2724-211-036-01 SCREW (1.7X2.5), +PWH

HR901	1-500-502-11	HEAD, OVER WRITE
M101	A-4672-475-A	MOTOR ASSY, SPINDLE
M102	A-4672-474-A	MOTOR ASSY, SLED
S102	1-762-148-21	SWITCH, PUSH (2 KEY)

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Contents Specifications MDS-JE330SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Flexible Circuit Board Repairing VarnigTable of Contents DisassemblyDiagrams Exploded ViewsSection Servicing Note JIG for Checking BD Board WaveformIOP TEORecord Precedure Checks Prior to Parts Replacement and Adjustments Forced ResetCriteria for Determination Measure if unsatisfactory REC/PLAYRetry Cause Display Mode Bit BinaryHigher Bits Lower Bits Hexa Details Bit When BinaryHexadecimal Binary Location of Parts and Controls Section GeneralFront Panel Case and Front Panel Section DisassemblySlider CAM Base Unit MBU-5A and BD Board SW Board and Loading Motor M103Section Test Mode Precautions for USE of Test ModeSetting the Test Mode Exiting the Test ModeSelecting the Test Mode GroupOperating the Continuous Playback Mode Non-Volatile Memory Mode EEP ModeMID OUTTest Mode Displays Functions of Other ButtonsMeanings of Other Displays Section Electrical Adjustments Parts Replacement and AdjustmentPrecautions for Checking Laser Diode Emissinon Precautions for USE of Optical PICK- UP KMS-260APrecautions for Adjustments Creating Continuously Recorded DiscTemperature Compensation Offset Check Laser Power CheckChecks Prior to Repairs Specified ValuePlay Checking MO Error Rate Check CD Error Rate CheckFocus Bias Check Self-Recording/playback CheckInitial Setting of Adjustment Value Temperature Compensation Offset AdjutmentLaser Power Adjustment Recording and Displaying the IOP InformationTraverse Adjustment Focus 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 Section Diagrams Circuit Boards LocationBlock Diagrams BD Section MDS-JE330Main Section LD-LOVOFor schematic diagrams For printed wiring boardsWaveforms Display SectionPrinted Wiring Board BD Section Semiconductor LocationSchematic Diagram BD 1/2 Section Schematic Diagram BD 2/2 Section Schematic Diagram Main 1/2 Section Schematic Diagram Main 2/2 Section Printed Wiring Board Main Section Printed Wiring Board Panel Section Schematic Diagram Panel Section Printed Wiring Board BD Switch Section Schematic Diagram BD Switch Section IC Block DiagramsBD Section IC101 IC121 CXD2654R IC152 BH6511FS-E2IC381 M5218AL IC441 LB1641 Main section IC301 UDA1341TS/N2IC406 M62016L IC101 RF Amplifier CXA2523AR BD board IC PIN FunctionsPin No Pin Name Function MNT0 FOK MNT1 ShckMNT2 Xbusy MNT3 SlocMvci AsyoAsyi AvddTfdr FfdrFrdr FS4IC501 System Control M30620MC-400FP Main board OPT DEL OPT SEL Mode SEL PB-PREC/PB SDA Section Exploded Views Case and Back Panel SectionFront Panel Section 6162Mechanism Section MDM-5A 225 226 206 205Base Unit Section MBU-5A 251 252Section Electrical Parts List ResistorsDisplay Display KEY SW Main PIN, Connector 7P Inductor MDS-JE330 Main SW VOL SEL Vibrator