Sony 4-216-840-0 service manual JIG for Checking BD Board Waveform, Iop

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JIG FOR CHECKING BD BOARD WAVEFORM

The special jig (J-2501-149-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be performed are shown as follows.

GND : Ground

I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser)

IOP	: For measuring IOP (Check the deterioration of the optical pick-up laser)
TEO : TRK error signal (Traverse adjustment)
VC	: Reference level for checking the signal
RF	: RF signal (Check jitter)

Mechanism deck

CN110

6P connector

5P Connector

RF

VC

TEO

IOP

I+3V

GND

		for MDM-3
		1	RF
	RF		VC
			TEO
	VC		IOP
	TEO	5	I+3V
	TEO	for MDM-5
		for MDM-5
	IOP	1	VC
	I+3V		RF
	I+3V		TEO
			IOP
	GND	6	I+3V
		6	GND

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Contents Specifications MDS-JE520MDM-5A SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Table of Contents DiagramsSection Servicing Notes Flexible Circuit Board Repairing VarningJIG for Checking BD Board Waveform IOPRecord Precedure Checks Prior to Parts Replacement and Adjustments Criteria for Determination Measure if unsatisfactoryRetry Cause Display Mode PrecedureHexadecimal nBinary Conversion Table Section General Section Disassembly CoverFront Panel Section Main Board Mechanism Deck Section MDM-5ASlider CAM Base Unit MBU-5A, BD BoardSW BOARD, Loading Motor M103 Setting the Test Mode Section Test ModePrecautions for USE of Test Mode Exiting the Test ModeSelecting the Test Mode Display Contents Mark GroupMID Operating the Continuous Playback ModeNon-Volatile Memory Mode EEP Mode OUTTest Mode Displays Functions of Other ButtonsMeanings of Other Displays Section Electrical Adjustments Parts Replacement and AdjustmentPrecautions for Adjustments Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK-UP KMS-260A Laser power meterCheck Prior to Repairs Temperature Compensation Offset CheckLaser Power Check Traverse CheckFocus Bias Check Play Checking MO Error Rate CheckCD Error Rate Check Self-Recording/playback CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjustment Recording and Displaying the IOP InformationTraverse Adjustment Focus Bias Adjustment ING CONTINUOUSLY-RECORDED DiscCD Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjustment Location Section Diagrams IC PIN Function DescriptionSrdt MNT2 XbusyXlat SensAsyo XrasXWE AsyiSfdr FS4Srdr SprdCnvss AderByte RSTLdin STBChack LD-LOWPlay Analog OUT Block Diagram MD Servo Section∙ Signal Path REC Analog REC DigitalBlock Diagram Main Section REC AnalogCircuit Boards Location CNDSemiconductor Location MDS-M100 Schematic Diagram BD Board 2/2 See 65 for Waveforms. See page 51 for IC Block DiagramSchematic Diagram SW Board Printed Wiring Board SW BoardIC406 M62016L IC421 M5293L IC121 CXD2654RMain Board IC301 ΜDA1341TS/N2 IC152 BH6511FS-E2MDS-M100 Semiconductor Location Schematic Diagram Main Board 1/2 See page 65 for Waveform MDS-M100 Ref. No Location D741 D742 IC761 Q741 Q742 Q767 MDS-M100 Section Exploded ViewsCover Section Chassis Section AEP, SP209 4-988-466-11 Spring ELECTROSTATIC, Leaf Mechanism Section MDM-5A201 206 204 205 221 A-4680-409-A Holder Complete AssyBase Unit Section MBU-5A Section Electrical Parts List AC Select BDCXA2523AR Short SwitchIC/TRANSISTOR Transistor FMW1Connector MainCeramic Inductor CarbonExcept US, CND Main Panel Panel SW Trans Sony Corporation