Sony MZ-N520 Service Manual page 20

MZ-N520/N520CK
• Adjustment Method of VC1_LOW (PB)
(item number: 741)
Set LCD display
7 41
** : Adjusted value
1. Connect a digital voltmeter to the TP1928 (VCO1) on the MAIN
[VOL +]
board, and adjust key (voltage up) or
age down) so that the voltage becomes 2.35 ± 0.05V.
MAIN board
TP1928 (VCO1)
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 VC1_HIGH (REC)
(item number: 742)
Set LCD display
7 42
** : Adjusted value
1. Connect a digital voltmeter to the TP1928 (VCO1) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 2.50 ± 0.05V.
MAIN board
TP1928 (VCO1)
TP1311 (GND)
2. Press the key on the set or the
X
commander to write the adjusted value.
Adjustment and Connection Location: MAIN board
20
A D * *
[VOL --]
key (volt-
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 VC2_LOW
(item number: 743)
Set LCD display
7 43
** : Adjusted value
1. Connect a digital voltmeter to the TP1905 (VCOUT) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 2.30 ± 0.01V.
MAIN board
TP1905 (VCOUT)
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 VC2_HIGH
(item number: 744)
Set LCD display
7 44
** : Adjusted value
1. Connect a digital voltmeter to the TP1905 (VCOUT) on the
[VOL +]
MAIN board, and adjust
key (voltage down) so that the voltage becomes 2.55 ± 0.01V.
MAIN board
TP1905 (VCOUT)
TP1311 (GND)
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)