Sony MZ-B10 service manual V1 num 861, V1 dat 862, V2 num 863, V2 dat 864, VC1 L 741

Rewriting the NV values

Note : Modify four adjusted values through the following proce- dure. Modifying the item number 863 and 864 is not neces- sary after version 1.600.

• Adjusted values modifying procedure

1.Select manual mode of the test mode, and set item number 860 (see page 16).

2.Press the > key to set item number 861.

Set LCD display

V1 num **

861

**: Adjusted value

3.Adjust with the [SPEED CONTROL +] key (adjusted value up) or [SPEED CONTROL -]key (adjusted value down) so that the adjusted value becomes E3.

4. Press the X key on the set or the	key on the remote
commander to write the adjusted value.

5.Press the > key to set item number 862.

Set LCD display

V1 dat **

862

**: Adjusted value

6. Adjust with the [SPEED CONTROL +] key (adjusted value up) or [SPEED CONTROL -]key (adjusted value down) so that the adjusted value becomes 55.

7. Press the X key on the set or the key on the remote commander to write the adjusted value.

8.Press the > key to set item number 863.

Set LCD display

V2 num **

863

**: Adjusted value

9. Adjust with the [SPEED CONTROL +] key (adjusted value up) or [SPEED CONTROL -]key (adjusted value down) so that the adjusted value becomes 89.

10. Press the X key on the set or the key on the remote commander to write the adjusted value.

11.Press the > key to set item number 864 .

Set LCD display

V2 dat **

864

**: Adjusted value

12.Adjust with the [SPEED CONTROL +] key (adjusted value up) or [SPEED CONTROL -]key (adjusted value down) so that the adjusted value becomes 03.

13. Press the	X	key on the set or the	key on the remote
commander to write the adjusted value.

MZ-B10

Power Supply Manual Adjustment

• Adjustment sequence

Adjustment must be done with the following steps.

1.VC1_LOW (PB) adjustment (item number : 741)

2.VC1_HIGH (REC) adjustment (item number : 742)

3.VC2_LOW adjustment (item number : 743)

4.VC2_HIGH adjustment (item number : 744)

5.REG1 adjustment (item number : 745)

6.REG3_LOW1 adjustment (item number : 747)

7.REG3_LOW2 adjustment (item number : 748)

8.REG3_HIGH adjustment (item number : 749)

9.VREC_LOW (X2 speed) adjustment (item number : 751)

10.VREC_MIDDLE (X4 speed)adjustment (item number : 752)

11.VREC_HIGH (HEAD MOTOR) adjustment (item number : 753)

• Setting Method of Power Supply Manual Adjustment

1.Make sure that the power supply voltage is 1.2V (BATT IN).

2.Select the manual mode of the test mode (see page 16).

3.Set item number.

Note1: BATT- terminal is not GND when AC adaptor is used.

Note2: Power supply adjustment auto item feed mode (page 26) is available to perform the temperature Correction and Power Supply Adjustment without entering the manual mode.

•Adjustment Method of VC1_LOW (PB) (item number: 741)

Set LCD display

VC1 L **

741

**: Adjusted value

1.Connect a digital voltmeter to the TP1928 (VCO1) on the MAIN board, and adjust [SPEED CONTROL +] key (voltage up) or [SPEED CONTROL --]key (voltage down) so that the voltage becomes 2.4 ± 0.05V.

digital voltmeter

MAIN board

TP1928 (VCO1)

TP1616 (GND)

2.Press the X key on the set or the key on the remote commander to write the adjusted value.

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

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