Sony R501PC service manual 64V1 PWM, 14 S14, 10Laser, 00ADJ OK, 14SetTmp, 11###S

Page 19

2.Connect a digital voltmeter to the TP902 (VC) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 2.75 ± 0.01 V.

digital

voltmeter

MAIN board

TP902(VC)

TP910(GND)

3.Press the X key to write the adjusted value.

(The item number changes to 764 when X key is pressed)

Adjustment and Connection Location: MAIN board (see page 20)

Adjustment method of Vl PWM Duty (item number: 764)

This set LCD display

7 64V1 PWM

1.Press the [ENTER] key and change the LCD display.

This set LCD display

7 64 AD

: Adjusted value

2.Connect a digital voltmeter to the TP901 (VL) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 2.30 ± 0.01 V.

digital

voltmeter

MAIN board

TP901(VL)

TP910(GND)

3.When press the X key to write the adjusted value, LCD dis- plays as follows and power supply manual adjustment has com- pleted.

This set LCD display

MZ-R501/R501PC

3.Adjust with [VOL +], [VOL --]key so that the adjusted value

(hexadecimal value) becomes the ambient temperature. (Initial value: 14h = 20 ° C, Adjusting range: 80h to 7fh (–128 ° C to +127 ° C)

This set LCD display

014S14

:Address

14: Adjusted value

4. Press the X key to write the adjusted value.

5-7. Laser Power Check

Connection :

laser

power meter

Optical pick-up objective lens

digital voltmeter

MAIN board

TP(+)

TP(–)

Checking Method :

1.Select the manual mode of test mode (see page 12), and set the laser power adjusting mode (item number 010).

This set LCD display

010Laser

2.Press the . key continuously until the optical pick-up moves to the most inward track.

3.Open the cover and set the laser power meter on the objective lens of the optical pick-up.

4.Press the N key, and set the laser MO read adjustment mode (item number 011).

This set LCD display

0 00ADJ OK

Adjustment and Connection Location: MAIN board

5-6. Temperature Correction

• Adjustment Method of temperature correction

1.Select the manual mode of test mode, and set the mode num- ber 014 (see page 12).

This set LCD display

014SetTmp

2.Measure the ambient temperature.

011LrefPw

5.Press the [ENTER] key and set the address & adjusted value display (See page 13).

This set LCD display

011###S

###: Address

: Adjusted value

6.Check that the laser power meter reading is 0.81 ± 0.08 mW.

7.Check that the voltage both ends (TP (+) and TP (–)) of resis- tor R501 at this time is below 44 mV.

19

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Contents LCX-4R SpecificationsMZ-R501/R501PC Flexible Circuit Board RepairingDiagrams Table of ContentsElectrical Adjustments DisassemblyOptical PICK-UP Flexible Board Section Servicing NoteGeneral Looking at the controlsCase Lower Assy Section DisassemblyCase Upper Assy Main Board LCD ModuleMD Mechanism Deck Service ASSY, OP Motor Flexible Board Holder AssyDC Motor M601, DC Motor M603 DC Motor M60200 6 Section Test Mode00Manual Configuration of Test ModeManual Mode Transition method in Manual Mode11072A1D 113A4S1D11OFEJ1D 11063B1DDescription of Indication History Reset the error display codeDescription of Error Indication Codes Setting method of Reset the Error Display CodeKey Check Mode Sound Skip Check Result Display Mode88RMC OK 88RMC OK 32Pw-T W 21Reset21ResOK? 21Res72V5dat 62 S0171V5num 71 S2000ADJ OK 64V1 PWM14 S14 10Laser13WritPw Configuration of overall adjustment12HrefPw 12###S00MO OK 00Assy35Ofst 00CD OK0000TimeMK Mode Settings62***S20 62***S3043Resume 67***S6768***S20 68***S01IC PIN Function Description Section DiagramsSET KEY MIC SenseXtest MIFVSS3Xtsl APCDSPVDD0 DSPVSS0Slcw SldwSlcu SlcvSET CODE0 CLK SELOpen Close SW GND SWFlashvdd Xhold SWSycn REC Sync LevelMain Board Block Diagram Servo SectionMain Board Block Diagram Audio SectionBlock Diagram System Control / Power Section Main Board 3/3 System CONTROL/POWER SectionWaveforms Common note on Printed Wiring BoardSide a Printed Wiring Board Main Section Refer to page 33 for NoteSemiconductor Location Side B IC B/D Except US, CND Model C323 R314 C308 AP310 C102 C312 C307 IC501 SN761057DBT IC Block DiagramsIC701 SC111257FCR2 IC901 IC601IC302 TA2131FL IC301 AK5354VTCase Upper Blue Section Exploded ViewsPanel Section Case Upper Silver54 A-3323-653-A Main BOARD, Complete Except US,CND Chassis Section58 3-225-632-01 Spring LIMITER, Compression MD Mechanism Deck Section MT-MZR500-172 Section Main Electrical Parts List Jumper Resistor Ceramic Chip 9PFDiode Diode UDZ-TE-17-2.4BInductor Chip JACK, DC Polarity Unified TypeInductor COIL, ChokeNetwork Resistor SwitchSWITCH, Slide Hold FILTER, Chip EMI Common ModeItalian AEP AccessoriesCONNECTOR, Optical Except R501US,E ENGLISH,RUSSIAN,HUNGARIAN POLISH,CZECH,SLOVAKIANMemo Date Description of Revision Revision History