Sony AM-NX9 Service Manual page 21

• Adjustment Method of VREC_LOW (X2 speed)
(item number: 751)
Set LCD display
751
V R E C L
1. Connect a digital voltmeter to the TP1620 (VREC) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 1.20 ± 0.02V.
MAIN board
TP1620 (VREC)
BATT – (GND)
u/ENTER
2. Press the key to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment Method of VREC_MIDDLE (X4 speed)
(item number: 752)
Set LCD display
752
V R E C M
1. Connect a digital voltmeter to the TP1620 (VREC) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 1.20 ± 0.02V.
MAIN board
TP1620 (VREC)
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)
• Adjustment Method of VREC_HIGH (HEAD MOTOR)
(item number: 753)
Set LCD display
753
V R E C H
1. Connect a digital voltmeter to the TP1620 (VREC) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes between 1.65V
and 1.75V.
MAIN board
TP1620 (VREC)
BATT – (GND)
2. Press the u/ENTER key to write the adjusted value.
Adjustment and Connection Location: MAIN board
AM-NX9
[VOL --]
key (voltage up) or
digital
voltmeter
(see page 22)
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