Sony MZ-N505 service manual 764AD, 765AD, 766AD, 767AD, 015###S, Temperature Coreection

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

Adjustment and Connection Location: MAIN board (See page 25)

•Adjustment Method of Vl PWM Duty (L) (item number: 764)

Set LCD display

764AD **

**: Adjusted value

1.Connect a digital voltmeter to the AP913 (VLO) 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

AP913 (VLO)

AP602 (GND)

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

Adjustment and Connection Location: MAIN board (See page 25)

•Adjustment Method of Vl PWM Duty (H) (item number: 765)

Set LCD display

765AD **

**: Adjusted value

1.Connect a digital voltmeter to the AP913 (VLO) on the MAIN

board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 2.55 ± 0.01 V.

digital voltmeter

MAIN board

AP913 (VLO)

AP602 (GND)

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

Adjustment and Connection Location: MAIN board (See page 25)

•Adjustment Method of Vrec PWM Duty (L) (item number: 766)

Set LCD display

766AD **

**: Adjusted value

MZ-N505

1.Connect a digital voltmeter to the TP (VREC) on the MAIN

board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 1.13 ± 0.02 V.

digital voltmeter

MAIN board

TP (VREC)

AP602 (GND)

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

Adjustment and Connection Location: MAIN board (See page 25)

•Adjustment Method of Vrec PWM Duty (H) (item number: 767)

Set LCD display

767AD **

**: Adjusted value

1.Connect a digital voltmeter to the TP (VREC) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --]key (voltage down) so that the voltage becomes 1.65 to 1.75 V.

digital voltmeter

MAIN board

TP (VREC)

AP602 (GND)

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

Adjustment and Connection Location: MAIN board (See page 25)

TEMPERATURE COREECTION

• Adjustment Method of Temperature Correction

1.Select the manual mode of test mode, and set the item number 015 (see page 14).

Set LCD display

015###S**

###: Address

**: Adjusted value

2.Measure the ambient temperature.

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

(hexadecimal value) becomes the ambient temperature. (Initial value: 19h = 25 ° C, Adjusting range: 80h to 7fh (–128 ° C to +127 ° C)

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

23