Sony AM-NX9 Service Manual page 20

Portable minidisc recorder
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AM-NX9
• Adjustment Method of REG1
(item number: 745)
Set LCD display
745
R E G 1
1. Connect a digital voltmeter to the TP1909 (REGO1) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 2.05 ± 0.01V.
MAIN board
TP1909 (REGO1)
BATT – (GND)
u/ENTER
2. Press the
key to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment Method of REG3_LOW1
(item number: 747)
Set LCD display
747
R E G 3 L 1
1. Connect a digital voltmeter to the TP1907 (REGO3) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 1.25 ± 0.01V.
MAIN board
TP1907 (REGO3)
BATT – (GND)
2. Press the
u/ENTER
key to write the adjusted value.
Adjustment and Connection Location: MAIN board
20
[VOL --]
key (voltage up) or
digital
voltmeter
(see page 22)
[VOL --]
key (voltage up) or
digital
voltmeter
(see page 22)
• Adjustment Method of REG3_LOW2
(item number: 748)
Set LCD display
748
R E G 3 L 2
1. Connect a digital voltmeter to the TP1907 (REGO3) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 1.25 ± 0.01V.
MAIN board
TP1907 (REGO3)
BATT – (GND)
u/ENTER
2. Press the
key to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment Method of REG3_HIGH
(item number: 749)
Set LCD display
749
R E G 3 H
1. Connect a digital voltmeter to the TP1907 (REGO3) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 1.25 ± 0.01V.
MAIN board
TP1907 (REGO3)
BATT – (GND)
2. Press the
u/ENTER
key to write the adjusted value.
Adjustment and Connection Location: MAIN board
[VOL --]
key (voltage up) or
digital
voltmeter
(see page 22)
[VOL --]
key (voltage up) or
digital
voltmeter
(see page 22)

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