Sony MDS-JE770 Higher Bits Lower Bits Hexa Details, Bit When Binary, Hexadecimal Binary

Page 11

MDS-JE770

Reading the Display:

Convert the hexadecimal display into binary display. If more than two causes, they will be added.

Example

When 42 is displayed:

Higher bit : 4 = 0100 t b6

Lower bit : 2 = 0010 t b1

In this case, the retry cause is combined of “CLV unlock” and “ader5”.

When A2 is displayed:

Higher bit : A = 1010 tb7+b5

Lower bit : 2 = 0010 t b2

The retry cause in this case is combined of “access fault”, “IVR rec error”, and “ader5”.

Reading the Track Mode Display

 

Higher Bits

Lower Bits

Hexa-

 

Details

 

 

 

 

 

 

 

 

 

 

Hexadecimal

8

4

2

1

8

4

2

1

 

decimal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

b7

b6

b5

b4

b3

b2

b1

b0

 

When 0

 

When 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Binary

0

0

0

0

0

0

0

1

01

 

Emphasis OFF

 

Emphasis ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

0

0

0

0

1

0

02

 

Monaural

 

Stereo

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

0

0

0

1

0

0

04

 

This is 2-bit display. Normally 01.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

0

0

1

0

0

0

08

 

01:Normal audio. Others:Invalid

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

0

1

0

0

0

0

10

 

Audio (Normal)

 

Invalid

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

1

0

0

0

0

0

20

 

Original

 

Digital copy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

1

0

0

0

0

0

0

40

 

Copyright

 

No copyright

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

0

0

0

0

0

0

0

80

 

Write prohibited

 

Write allowed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reading the Display:

Convert the hexadecimal display into binary display. If more than two causes, they will be added.

Example When 84 is displayed: Higher bit : 8 = 1000 t b7 Lower bit : 4 = 0100 t b2

In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of “emphasis OFF”, “monaural”, “original”, “copyright exists”, and “write allowed”.

Example When 07 is displayed: Higher bit : 0 = 1000 tAll 0 Lower bit : 7 = 0111 t b0+b1+b2

In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of “emphasis ON”, “stereo”, “original”, “copyright exists”, and “write prohibited”.

Hexadecimal t Binary Conversion Table

Hexadecimal

Binary

Hexadecimal

Binary

 

 

 

 

0

0000

8

1000

1

0001

9

1001

 

 

 

 

2

0010

A

1010

 

 

 

 

3

0011

B

1011

 

 

 

 

4

0100

C

1100

 

 

 

 

5

0101

D

1101

 

 

 

 

6

0110

E

1110

 

 

 

 

7

0111

F

1111

 

 

 

 

11

Image 11
Contents MDM-7A Specifications873-890-11 MDS-S50SELF-DIAGNOSIS Function Genera l Power requirementsSupplied accessories MDS-JE770Items of Error History Mode Items and Contents Exploded Views Table of ContentsDisassembly DiagramsFlexible Circuit Board Repairing MDS-JE770 Section Service NotesIOP JIG for Checking BD Board WaveformRecord Precedure Optical PICK-UP Block Type Discrimination KSN-260EMain Board Component Side Checks Prior to Parts Replacement and AdjustmentsForced Reset Bit Binary Retry Cause Display ModeHexadecimal Binary Bit When BinaryHigher Bits Lower Bits Hexa Details Button Descriptions MDS-JE770 Section GeneralDisassembly Flow MDS-JE770 Section DisassemblyFront Panel Section Two screws Main BoardOver Light Head HR901, BD Board Mechanism Deck Section MDM-7ALoading Motor Assy M103 Holder AssyOptical PICK-UP Sled Motor Assy M102, SliderSpindle Moter Assy M101 Exiting the Test Mode MDS-JE770 Section Test ModePrecautions for USE of Test Mode Setting the Test ModeSelecting the Test Mode MENU/NO Operating the Continuous Playback ModeFunctions of Other Buttons Test Mode DisplaysMode display Error rate displayInformation When Memory NG is DisplayedMeanings of Other Displays Automatic SELF-DIAGNOSIS FunctionCheck before replacement MDS-JE770 Section Electrical AdjustmentsParts Replacement and Adjustment Auto Gain Control Output Level Adjustment flowTemp Adjust Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK- UP KMS-260B/260E Precautions for AdjustmentsChecks Prior to Repairs Using the Continuously Recorded DiscTraverse Waveform Auto CheckOther Checks Traverse CheckSelf-Recording/playback Check Play Check MO Error Rate CheckCD Error Rate Check Focus Bias CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjutment Iop NV Save Traverse AdjustmentFocus Bias Adjustment MO Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment CD Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points Circuit Boards Location MDS-JE770 Section DiagramsMain Board For schematic diagramsFor printed wiring boards BD BoardIC190 Block Diagrams BD SectionIC171 IC1 2/2 Main SectionIC360 2/2 Write Head SemiconductorOVERSemiconductor Optical Pick UP BlockBoard Board Main Main Schematic Diagram Main /2 See page 51 for IC Block Diagrams IC1 Model is printed on diagramHP Board Display BoardKB Board KEY-SW BoardLED Drive Schematic Diagram Display SectionCN921 C924 LF900 C910 RY910C951 C952 D910Main Schematic Diagram Power SectionIC101 CXA2523AR BD Board IC Block DiagramsIC500 AK4524 Main Board Pin No Pin Name Description IC PIN Function DescriptionIC101 CXA2523AR RF Amplifier BD Board Pin No Pin Name Desription Avdd MvciAsyo AsyiFS4 TfdrFfdr FrdrFlck IIC PowerADA.RESET FldtProtect ADA. LatchEPN DINT1/H ClipREC Flcs TimerSTB Beep SWOSC0 ResetVDISP1 VFL1Chassis Section Section Exploded ViewsNot supplied Supplied with J790 FL750 With RV790 FL750 1-517-987-11 Indicator TUBE, FluorescentMechanism MDM-7A Motor ASSY, Loading HEAD, Over LightMotor ASSY, Spindle Motor ASSY, SledMDS-JE770 Section Electrical Parts List Short SwitchMetal Chip Jumper ResistorMDS-JE770 Display HP KB KEY-SW KEY-SW Main MDS-JE770 Main 2SD2144S-TP-UVW Resistor VOL-SEL MDS-JE770 Main PTMemo MDS-JE770 Revision History