Sony MZ-N505 Service Manual page 23

2. Press the key to write the adjusted value.
X
Adjustment and Connection Location: MAIN board
• Adjustment Method of Vl PWM Duty (L)
(item number: 764)
Set LCD display
764
** : Adjusted value
1. Connect a digital voltmeter to the AP913 (VLO) on the MAIN
[VOL +]
board, and adjust
(voltage down) so that the voltage becomes 2.30
MAIN board
AP913 (VLO)
AP602 (GND)
2. Press the key to write the adjusted value.
X
Adjustment and Connection Location: MAIN board
• Adjustment Method of Vl PWM Duty (H)
(item number: 765)
Set LCD display
765
** : Adjusted value
1. Connect a digital voltmeter to the AP913 (VLO) on the MAIN
[VOL +]
board, and adjust
(voltage down) so that the voltage becomes 2.55
MAIN board
AP913 (VLO)
AP602 (GND)
2. Press the key to write the adjusted value.
X
Adjustment and Connection Location: MAIN board
• Adjustment Method of Vrec PWM Duty (L)
(item number: 766)
Set LCD display
766
** : Adjusted value
(See page 25)
AD **
[VOL --]
key (voltage up) or
0.01 V.
digital
voltmeter
(See page 25)
AD **
[VOL --]
key (voltage up) or
0.01 V.
digital
voltmeter
(See page 25)
AD **
1. Connect a digital voltmeter to the TP (VREC) on the MAIN
board, and adjust
(voltage down) so that the voltage becomes 1.13
MAIN board
TP (VREC)
AP602 (GND)
2. Press the key to write the adjusted value.
X
Adjustment and Connection Location: MAIN board
• Adjustment Method of Vrec PWM Duty (H)
key
(item number: 767)
Set LCD display
767
** : Adjusted value
1. Connect a digital voltmeter to the TP (VREC) on the MAIN
board, and adjust
(voltage down) so that the voltage becomes 1.65 to 1.75 V.
MAIN board
TP (VREC)
AP602 (GND)
2. Press the X key to write the adjusted value.
Adjustment and Connection Location: MAIN board
TEMPERATURE COREECTION
key • Adjustment Method of Temperature Correction
1. Select the manual mode of test mode, and set the item number
015 (see page 14).
Set LCD display
015
### : Address
** : Adjusted value
2. Measure the ambient temperature.
[VOL +]
3. Adjust with
(hexadecimal value) becomes the ambient temperature.
(Initial value: 19h = 25 C, Adjusting range: 80h to 7fh (–128
C to +127 C)
4. Press the X key to write the adjusted value.
MZ-N505
[VOL +]
key (voltage up) or
digital
voltmeter
(See page 25)
AD **
[VOL +]
key (voltage up) or
digital
voltmeter
(See page 25)
###S**
[VOL --]
, key so that the adjusted value
[VOL --]
key
0.02 V.
[VOL --]
key
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