Sony MZ-N420D Service Manual page 20

MZ-N420D
• Adjustment Method of REG1
(item number: 745)
Set LCD display
745
A D * *
** : Adjusted value
1. Connect a digital voltmeter to the TP1909 (REGO1) on the
[VOLUME +]
MAIN board, and adjust
[VOLUME --]
key (voltage down) so that the voltage becomes
2.05 ± 0.01V.
MAIN board
TP1909 (REGO1)
BATT – (GND)
2. Press the key to write the adjusted value.
ENTER/NX
Adjustment and Connection Location: MAIN board
• Adjustment Method of REG3_LOW1
(item number: 747)
Set LCD display
747
A D * *
** : Adjusted value
1. Connect a digital voltmeter to the TP1907 (REGO3) on the
[VOLUME +]
MAIN board, and adjust
[VOLUME --]
key (voltage down) so that the voltage becomes
1.25 ± 0.01V.
MAIN board
TP1907 (REGO3)
BATT – (GND)
2. Press the key to write the adjusted value.
ENTER/NX
Adjustment and Connection Location: MAIN board
20
key (voltage up) or
digital
voltmeter
(see page 22)
key (voltage up) or
digital
voltmeter
(see page 22)
• Adjustment Method of REG3_LOW2
(item number: 748)
Set LCD display
748
A D * *
** : Adjusted value
1. Connect a digital voltmeter to the TP1907 (REGO3) on the
[VOLUME +]
MAIN board, and adjust
[VOLUME --]
key (voltage down) so that the voltage becomes
1.25 ± 0.01V.
MAIN board
TP1907 (REGO3)
BATT – (GND)
2. Press the key to write the adjusted value.
ENTER/NX
Adjustment and Connection Location: MAIN board
• Adjustment Method of REG3_HIGH
(item number: 749)
Set LCD display
749
A D * *
** : Adjusted value
1. Connect a digital voltmeter to the TP1907 (REGO3) on the
[VOLUME +]
MAIN board, and adjust
[VOLUME --]
key (voltage down) so that the voltage becomes
1.25 ± 0.01V.
MAIN board
TP1907 (REGO3)
BATT – (GND)
2. Press the key to write the adjusted value.
ENTER/NX
Adjustment and Connection Location: MAIN board
key (voltage up) or
digital
voltmeter
(see page 22)
key (voltage up) or
digital
voltmeter
(see page 22)