Sony MZ-R500/R500PC, 7 62 AD, 7 63 AD, Power Supply Manual Adjustment, Adjustment sequence

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

4)Select the manual mode of the test mode, and set item number 862 (see page 13).

This set LCD display

862V1dat

5)Adjust with the [VOL+] key (adjusted value up) or [VOL--]key (adjusted value down) so that the adjusted value becomes

01.

This set LCD display

862S01

: Address

01: Adjusted value

6)Press the X key to write the adjusted value.

7)Select the manual mode of the test mode, and set item number 871 (see page 13).

This set LCD display

MZ-R500/R500PC

• Setting method of power supply manual adjustment

1.Make sure that the power supply voltage is 3V.

2.Set the test mode (see page 12).

3.Press the . or [VOL--]key to activate the overall adjustment

mode.

This set LCD display

000Assy11

4.Press the [END SEARCH] key. (the [END SEARCH] key causes the item number to be switched to 762.)

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

This set LCD display

762Vc1PWM

1.Press the [ENTER] key and set the address & adjusted value display (see page 14).

This set LCD display

871V5num

8)Adjust with the [VOL+] key (adjusted value up) or [VOL--]key (adjusted value down) so that the adjusted value becomes 20.

This set LCD display

871S20

: Address

20: Adjusted value

9)Press the X key to write the adjusted value.

10)Select the manual mode of the test mode, and set item number 872 (see page 13).

This set LCD display

872V5dat

11)Adjust with the [VOL+] key (adjusted value up) or [VOL--]key (adjusted value down) so that the adjusted value becomes 39.

This set LCD display

872S39

: Address

39: Adjusted value

12) Press the X key to write the adjusted value.

7 62 AD

: Adjusted value

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 2.40 ± 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 763 when X key is pressed)

Adjustment and Connection Location: MAIN board (see page 21)

•Adjustment method of Vc PWM Duty (H) (item number: 763)

This set LCD display

763VchPWM

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

This set LCD display

5-5. Power Supply Manual Adjustment

• Adjustment sequence

Adjustment must be done with the following steps.

1.Vc PWM Duty (L) adjustment (item number 762)

2.Vc PWM Duty (H) adjustment (item number 763)

3.Vl PWM Duty adjustment (item number 764)

7 63 AD

: Adjusted value

19