Sony MZ-N520 Service Manual page 22

MZ-N520/N520CK
• Adjustment Method of VREC_LOW (X2 speed)
(item number: 751)
Set LCD display
7 51
** : Adjusted value
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)
TP1311 (GND)
2. Press the key on the set or the
X
commander to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment Method of VREC_MIDDLE (X4 speed)
(item number: 752)
Set LCD display
7 52
** : Adjusted value
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)
TP1311 (GND)
2. Press the key on the set or the
X
commander to write the adjusted value.
Adjustment and Connection Location: MAIN board
22
A D * *
[VOL --]
key (voltage up) or
digital
voltmeter
key on the remote
--
(see page 24)
A D * *
[VOL --]
key (voltage up) or
digital
voltmeter
-- key on the remote
(see page 24)
• Adjustment Method of VREC_HIGH (HEAD MOTOR)
(item number: 753)
Set LCD display
7 53
** : Adjusted value
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)
TP1311 (GND)
2. Press the key on the set or the
X
commander to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment Method of CHGV_LOW
(item number: 755)
Set LCD display
7 55
** : Adjusted value
Note: Remove the rechargeable battery.
1. Connect a digital voltmeter to the BATT+ and BATT– on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 1.35 ± 0.01V.
MAIN board
BATT +
BATT –
2. Press the key on the set or the
X
commander to write the adjusted value.
Adjustment and Connection Location: MAIN board
A D * *
[VOL --]
key (voltage up) or
digital
voltmeter
-- key on the remote
(see page 24)
A D * *
[VOL --]
key (voltage up) or
digital
voltmeter
-- key on the remote
(see page 24)