Sony 4-216-840-0 service manual Functions of Other Buttons, Test Mode Displays

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6. FUNCTIONS OF OTHER BUTTONS

	Function	Contents
	á	Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo
	á	turns ON/OFF.
		turns ON/OFF.
	p	Stops continuous playback and continuous recording.
	)	The sled moves to the outer circumference only when this is pressed.
	0	The sled moves to the inner circumference only when this is pressed.
	SCROLL	Switches between the pit and groove modes when pressed.

	PLAY MODE	Switches the spindle servo mode (CLVS ÷CLV A).
	LEVEL/DISPLAY/CHAR	Switches the displayed contents each time the button is pressed
	EJECT ¤	Ejects the disc
	REPEAT	Exits the test mode

7. TEST MODE DISPLAYS

Each time the [DISPLAY/CHAR] button is pressed, the display changes in the following order.

1. Mode display

Displays “TEMP ADJUST”, “CPLAYMODE”, etc.

2. Error rate display

Displays the error rate in the following way. C1 = ¹¹¹¹AD = ¹¹

C1 = Indicates the C1 error. AD = Indicates ADER.

3. Address display

The address is displayed as follows. (MO: recordable disc, CD: playback only disc)

Pressing the [SCROLL/CLOCKÊSET] button switches between the group display and bit display. h = ¹¹¹¹ s = ¹¹¹¹ (MO pit and CD)

h = ¹¹¹¹ a = ¹¹¹¹ (MO groove) h = Indicates the header address.

s = Indicates the SUBQ address. a = Indicates the ADIP address.

Mode display

Error rate display

Address display

Auto gain display

(Not used in servicing)

Detrack check display (Not used in servicing)

IVR display

(Not used in servicing)

Note: “–” is displayed when servo is not imposed.

4.Auto gain display (Not used in servicing) The auto gain is displayed as follows.

AG = ¹¹/¹¹[¹¹]

5.Detrack check display (Not used in servicing) The detrack is displayed as follows.

ADR = ¹¹¹¹¹¹¹

6.IVR display (Not used in servicing)

The IVR is displayed as follows. [¹¹][¹¹][¹¹

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Contents MDS-JE520 SpecificationsMDM-5A SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Diagrams Table of ContentsSection Servicing Notes Varning Flexible Circuit Board RepairingIOP JIG for Checking BD Board WaveformRecord Precedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and AdjustmentsPrecedure Retry Cause Display ModeHexadecimal nBinary Conversion Table Section General Cover Section DisassemblyFront Panel Section Mechanism Deck Section MDM-5A Main BoardBase Unit MBU-5A, BD Board Slider CAMSW BOARD, Loading Motor M103 Exiting the Test Mode Section Test ModePrecautions for USE of Test Mode Setting the Test ModeDisplay Contents Mark Group Selecting the Test ModeOUT Operating the Continuous Playback ModeNon-Volatile Memory Mode EEP Mode MIDFunctions of Other Buttons Test Mode DisplaysMeanings of Other Displays Parts Replacement and Adjustment Section Electrical AdjustmentsLaser power meter Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK-UP KMS-260A Precautions for AdjustmentsTraverse Check Temperature Compensation Offset CheckLaser Power Check Check Prior to RepairsSelf-Recording/playback Check Play Checking MO Error Rate CheckCD Error Rate Check Focus Bias CheckRecording and Displaying the IOP Information Initial Setting of Adjustment ValueTemperature Compensation Offset Adjustment Laser Power AdjustmentTraverse Adjustment ING CONTINUOUSLY-RECORDED Disc Focus Bias AdjustmentMO Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment CD Auto Gain Control Output Level AdjustmentAdjustment Location IC PIN Function Description Section DiagramsSens MNT2 XbusyXlat SrdtAsyi XrasXWE AsyoSprd FS4Srdr SfdrRST AderByte CnvssLD-LOW STBChack LdinREC Analog REC Digital Block Diagram MD Servo Section∙ Signal Path Play Analog OUTREC Analog Block Diagram Main SectionCND Circuit Boards LocationSemiconductor Location MDS-M100 65 for Waveforms. See page 51 for IC Block Diagram Schematic Diagram BD Board 2/2 SeePrinted Wiring Board SW Board Schematic Diagram SW BoardIC152 BH6511FS-E2 IC121 CXD2654RMain Board IC301 ΜDA1341TS/N2 IC406 M62016L IC421 M5293LMDS-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 Exploded Views SectionCover Section AEP, SP Chassis Section221 A-4680-409-A Holder Complete Assy Mechanism Section MDM-5A201 206 204 205 209 4-988-466-11 Spring ELECTROSTATIC, LeafBase Unit Section MBU-5A AC Select BD Section Electrical Parts ListTransistor FMW1 Short SwitchIC/TRANSISTOR CXA2523ARMain ConnectorCeramic Carbon InductorExcept US, CND Main Panel Panel SW Trans Sony Corporation