Sony MZ-R91 service manual E s N, E s O K ?, E s e t, Section Electrical Adjustments

Page 18
1. NV Reset (Memory clear) r
2. Power Supply Manual Adjustment r
3. Temperature correction r
4. CD Overall Adjustment r
5. MO Overall Adjustment

Ver 1.4 2001. 01

SECTION 5

ELECTRICAL ADJUSTMENTS

[Outline]

In this set, automatic adjustment of CD and MO can be per- formed by entering the test mode. (See page 11)

However, before starting automatic adjustment, the memory clear, power adjustment and temperature adjustment must be performed in the manual mode.

The keys in the description refer to the keys on both set and remote commander unless otherwise specified.

Though LCD display shows the LCD of the remote commander, same contents are also displayed on the LCD of the set.

[Precautions for Adjustment]

1.Adjustment must be done in the test mode only. After adjusting, release the test mode.

2.Use the following tools and measuring instruments.

Test CD disc

TDYS-1

 

 

(Part No. : 4-963-646-01)

SONY MO disc available on the market.

Laser power meter

LPM-8001

 

 

(Part No. : J-2501-046-A)

• Digital voltmeter

3.Unless specified otherwise, supply DC 3V from the DC IN 3V jack.

4.Switch position

HOLD switch ................ OFF

[Adjustment Sequence]

Adjustment must be done with the following steps.

Manual Mode

Overall Mode

[NV Reset]

• Setting method of NV reset

1.Select the manual mode of test mode, and set mode num- ber 021NV Reset.

LCD display

021R e s N V

2.Press the X key.

LCD display

021R e s O K ?

3.Press the X key once more.

LCD display

021R e s * * *

rNV reset (after several seconds)

021R e s e t !

4.Quit the manual mode, and activate the test mode.

[Power Supply Manual Adjustment]

• Adjustment sequence

Adjustment must be done with the following steps.

1.VC PWM Duty (L) adjustment (mode number: 762) r

2.VREM PWM Duty (H) adjustment (mode number: 763) r

3.VREM PWM Duty (L) adjsutment (mode number: 764) r

4.VC PWM Duty (H) adjustment (mode number: 765)

r

5.VREM PWM Duty (H) adjustment (mode number: 766) r

6.VREM PWM Duty (L) adjustment (mode number: 767)

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Image 18
Contents Specifications NEWLCX-2R Exploded Views Electrical Parts List Table of ContentsDiagrams Flexible Circuit Board RepairingSection Servicing Notes EepromGeneral Headphones with a remote control RM-MZ2SSection Location of ControlsSection Disassembly Panel ASSY, BottomUpper Panel Section LCD MODULE, BUTTON, CONTROL, Service ASSY, Upper Panel MZ-R90MZ-R91 Main BOARD, Case ASSY, Battery Belt ASSY, OrnamentalService ASSY, OP Chassis ASSY, SET, MD Mechanism Deck MT-MZR90-165Holder Assy Motor Flexible BoardMOTOR, DC Sled M602 Operation in Setting the Test Mode Test ModeSetting Method of Test Mode Releasing the Test ModeConfiguration of Test Mode Manual ModeA n u a l 011 0 6 3 B 0 Overall Adjustment Mode011 0 F F J 0 011 0 5 9 a 0T a t Sound Skip Check Result Display ModeSetting method of Sound Skip Check Result Display Mode T r ySelf-Diagnosis Display Mode 000 1 s tDescription of Indication History Description of Error Indication CodesClearing Self-Diagnosis Data and Total Recording Time RECKey Check Mode Key IndicationE s O K ? Section Electrical AdjustmentsE s N E sR h V c l C l P W MC h P W M R h V c hD R U N E t T m pS S Y D O KE s u m e Laser Power CheckO O K E s C l rSignal Path Section DiagramsBlock Diagram Servo Section REC DigitalBlock Diagram A/D, D/A CONVERTER, Audio Section Block Diagram KEY CONTROL/DISPLAY/POWER Supply SectionSignal Path Play Analog OUT REC Analog REC Digital Printed Wiring Board Semiconductor LocationJEW MZ-R90/R91 IC501 SN761056ADBT IC Block Diagrams IC301Waveforms IC304, 305 RN5RZ25AA-TRIC601 IC602IC603 IC605 XC6367B103MR IC803 XC6383C301MRIC902 IC804 RV5C348A-E2 IC901IC PIN Function Description Sclk VDC0Swdt VSC0Xras VDIO1VSIO1 IxoeLddr XlrfApcref VDC4Sense Sync RECPause KEY WrpwrTSB Edge FfclrSleep GND SWSET KEY Half LockRMC KEY REC KEYSection Exploded Views Panel Section MZ-R90HK, CH, JEW Panel Section MZ-R91 Chassis section Not suppliedChassis Section 101 105 113 112 114 106 110 107 111 109102 103 104 108 109 MD-MECHANISM Deck Section Electrical Parts List MainCeramic Chip 5PF CAP, ChipCXD2660GA ConnectorFILTER, Chip EMI Common Mode IC MPC17A56FTAEBFET FET HAT2051T-ELFET HAT2050T-EL Transistor ZDT6718TASwitch Composition Circuit BlockOPEN/CLOSE Detect Thermistor TH901 1-803-795-21 THERMISTOR, Positive Vibrator SWITCH, Slide HoldSWITCH, Slide Synchro REC MiscellaneousMZ-R90/R91 Subject Addition of Korean Model CorrectionElectrical Parts List Exploded ViewsHong Kong Model Korean Model 112 105 106 #114 151 176 @Indicates changed portion.EXPLODED Views IC MPC17A56FTA IC MPC18A31FTAEB