Sony MZ-E800 service manual 762 Vc1PWM, 764 Vr1Vc1, VchPWM, VrhVch, Adj Ok, Chg-dV

Page 18

Adjustment method of Vc PWM Duty (L) (item number: 762)

Remote commander LCD display

762 Vc1PWM **

**: Adjusted value

1.Connect a digital voltmeter to the TP918 (VC) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 2.305+0.06–0V.

digital voltmeter

MAIN board

TP918 (VC)

TP904 (SET GND)

2.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 19)

Adjustment method of Vrem PWM Duty (L) (item number: 764)

Remote commander LCD display

764 Vr1Vc1 **

**: Adjusted value

1.Connect a digital voltmeter to the TP919 (VR) on the MAIN

board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 2.24+0.03–0V.

digital voltmeter

MAIN board

TP919 (VR)

TP904 (SET GND)

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

(The item number changes to 765 when X key is pressed)

Adjustment and Connection Location: MAIN board (see page 19)

Adjustment method of Vc PWM Duty (H) (item number: 765)

Remote commander LCD display

765 VchPWM **

**: Adjusted value

1.Connect a digital voltmeter to the TP918 (VC) on the MAIN

board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 2.715+0.075–0V.

digital voltmeter

MAIN board

TP918 (VC)

TP904(SET GND)

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

(The item number changes to 766 when X key is pressed)

Adjustment and Connection Location: MAIN board (see page 19)

Adjustment method of Vrem PWM Duty (H) (item number: 766)

Remote commander LCD display

766 VrhVch **

**: Adjusted value

1.Connect a digital voltmeter to the TP919 (VR) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 2.6+0.02–0.01V.

digital voltmeter

MAIN board

TP919 (VR)

TP904 (SET GND)

2.When press the X key to write the adjusted value, LCD displays as follows and power supply manual adjustment has completed.

Remote commander LCD display

036 ADJ OK

Adjustment and Connection Location: MAIN board (see page 19)

Charging Manual Adjustment

• Adjustment sequence

Adjustment must be done with the following order.

1.Charging detection set value adjustment (item number 757) r

2.Normal charging current adjustment (item number 721)

r

3. Trickle charging current adjustment (item number 722)

Adjustment method of charging detection set value (item number 757)

1.Connect a resistor 2.4 between TP901 (BATT+) and TP902 (BATT-) on the MAIN board.

2.Apply 2 V across TP901 (BATT+) and TP904 (SET GND), and across TP903 (2V IN) and TP904 (SET GND) on the MAIN board respectively.

3.Select the manual mode of the test mode, and set item number 757 (see page 13).

Remote commander LCD display

757 Chg-dV **

**: Adjusted value

4.Adjust with [VOL +] key or [VOL --]key so that the adjusted value becomes 1.

If the adjusted value is already attained, go to the next adjustment item without pressing the X key.

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

Adjustment and Connection Location: MAIN board (see page 19)

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Contents Specifications 927-939-12Exploded Views Electrical Parts List Table of ContentsDiagrams Flexible Circuit Board RepairingSection Servicing Notes When a disc is loaded Operation of MechanismWhen a disc is unloaded Parts and controls Section GeneralSection Disassembly Panel ASSY, RearFront Panel Section Shutter SectionDisplay PANEL, Liquid Crystal LCD901 MD Mechanism Deck MT-MZE800-170OP Service Assy LCX-2E Main BoardMOTOR, DC SSM17A/C-NP Spindle M901, MOTOR, DC Sled M902 Holder AssyOperation 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 0 011 C 6 8 S 0F F J 0 000 1 s tReset the error display code Description of Error Indication CodesDescription of Indication History RPLAY 000000 FF SET OKSection Electrical Adjustments ResetPower CC 021 ResVchPWM 762 Vc1PWM764 Vr1Vc1 VrhVchAssy11 ChgPW1ChgPW2 000 *** NGSection Diagrams Block Diagram Main /2Slcv Block Diagram DISPLAY/KEY CONTROL/POWER Supply Section Printed Wiring Board Semiconductor LocationPlayback + Line Schematic Diagram Main Board 3/4 See page 37 for Waveforms Charge IC Block Diagrams IC301 TA2131FL EL WaveformsIC501 SN761056CDBT IC551 IC903 XC6383C601MR IC904 XC6368B101MRIC PIN Function Description IC601 CXD2661GA-2 Xras VDIO1VSIO1 IxoeLddr XlrfApcref VDC4SO0 VlcdSI0 SCK0Xwake DC Xwake CloseXwake SET Xchg PWRFlash WR EN SSB DataSSB CLK DBB0Section Exploded Views Panel SectionMain Section 5666103 MD Mechanism Deck Section MT-MZE800-170105 104 102 117 101 103 106 107 109 108 116 115 110 114 113 112 111Section Electrical Parts List MainInductor Composition Circuit Block Accessories & Packing Materials Revision History