Sony MDS-JE770 Section Test Mode, Precautions for USE of Test Mode, Setting the Test Mode

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MDS-JE770

SECTION 4

TEST MODE

4-1. PRECAUTIONS FOR USE OF TEST MODE

•As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stopped before setting and removing it.

Even if the A EJECT button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not stop rotating.

Therefore, it will be ejected while rotating.

Be sure to press the A EJECT button after pressing the MENU/NO button and the rotation of disc is stopped.

4-1-1. Recording laser emission mode and operating buttons

•Continuous recording mode (CREC 1MODE) (C35)

•Laser power check mode (LDPWR CHECK) (C13)

•Laser power adjustment mode (LDPWR ADJUS) (C04)

•Iop check (Iop Compare) (C27)

•Iop value nonvolatile writing (Iop NV Save) (C06)

•Traverse (MO) check (EF MO CHECK) (C14)

•Traverse (MO) adjustment (EF MO ADJUS) (C07)

•When pressing the z REC button.

4-2. SETTING THE TEST MODE

The following are two methods of entering the test mode.

Procedure 1: While pressing the lAMS L knob and x button, connect the power plug to an outlet, and release the lAMS L knob and x button.

When the test mode is set, “[Check]” will be displayed. Rotating the lAMS L knob switches between the following three groups; ··· y Check y Service y Develop y ···.

Procedure 2: While pressing the lAMS L knob, connect the power plug to the outlet and release the lAMS L knob. When the test mode is set, “TEMP CHECK”(C12) will be displayed. By setting the test mode using this method, only the “Check” group of method 1 can be executed.

NOTE: Do not use the test mode in the [Develop] group. If used, the unit may not operate normally.

If the [Develop] group is set accidentally, press the MENU/NO button immediately to exit the [Develop] group.

4-3. EXITING THE TEST MODE

Press the REPEAT button. The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.

4-4. BASIC OPERATIONS OF THE TEST MODE

All operations are performed using the lAMS L

The functions of these buttons are as follows.

knob, YES button, and MENU/NO button.

	Function name		Function

MENU/NO button			Cancel or move to top hierarchy

YES button			Set

AMS		Left or Right	Select
AMS
knob		Push	Set submenu
		Push	Set submenu

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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