Sony MZ-B10 Service Manual page 21

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 **
** : Adjusted value
[SPEED CONTROL +]
3. Adjust with the
[SPEED CONTROL -]
up) or
that the adjusted value becomes E3.
4. Press the X key on the set or the
commander to write the adjusted value.
5. Press the > key to set item number 862.
Set LCD display
V1 dat **
** : Adjusted value
[SPEED CONTROL +]
6. Adjust with the
[SPEED CONTROL -]
up) or
that the adjusted value becomes 55.
7. Press the X key on the set or the
commander to write the adjusted value.
8. Press the > key to set item number 863.
Set LCD display
V2 num **
** : Adjusted value
[SPEED CONTROL +]
9. Adjust with the
[SPEED CONTROL -]
up) or
that the adjusted value becomes 89.
10. Press the X key on the set or the
commander to write the adjusted value.
11. Press the key to set item number 864 .
>
Set LCD display
V2 dat **
** : Adjusted value
[SPEED CONTROL +]
12. Adjust with the
[SPEED CONTROL -]
up) or
that the adjusted value becomes 03.
13. Press the X key on the set or the
commander to write the adjusted value.
861
key (adjusted value
key (adjusted value down) so
key on the remote
862
key (adjusted value
key (adjusted value down) so
key on the remote
863
key (adjusted value
key (adjusted value down) so
key on the remote
864
key (adjusted value
key (adjusted value down) so
key on the remote
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
** : Adjusted value
1. Connect a digital voltmeter to the TP1928 (VCO1) on the MAIN
[SPEED CONTROL +]
board, and adjust
[SPEED CONTROL --]
key (voltage down) so that the voltage
becomes 2.4 ± 0.05V.
MAIN board
TP1928 (VCO1)
TP1616 (GND)
2. Press the X key on the set or the
commander to write the adjusted value.
Adjustment and Connection Location: MAIN board
MZ-B10
**
741
key (voltage up) or
digital
voltmeter
key on the remote
(see page 25)
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