Sony MZ-B10 - Minidisc Voice Recorder, Руководство по обслуживанию

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21
MZ-B10
• Adjustment Method of VC1_LOW (PB)
(item number: 741)
1. Connect a digital voltmeter to the TP1928 (VCO1) on the MAIN
board, and adjust
[SPEED C]
key (voltage up) or
[SPEED CONTROL --]
key (voltage down) so that the voltage
becomes 2.4 ± 0.05V.
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)
VC1 L **
741
Set LCD display
**
: Adjusted value
digital
voltmeter
MAIN board
TP1928 (VCO1)
TP1616 (GND)
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.
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.
3. Adjust with the
[SPEED C]
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.
6. Adjust with the
[SPEED C]
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.
9. Adjust with the
[SPEED C]
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 .
12. Adjust with the
[SPEED C]
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.
V1 num **
861
Set LCD display
**
: Adjusted value
V1 dat **
862
Set LCD display
**
: Adjusted value
V2 num **
863
Set LCD display
**
: Adjusted value
V2 dat **
864
Set LCD display
**
: Adjusted value