Sony MZ-S1 Service Manual page 24

MZ-S1
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 ± 0.01 V.
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 ± 0.01 V.
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
24
(See page 26)
AD **
[VOL --]
key (voltage up) or
digital
voltmeter
(See page 26)
AD **
[VOL --]
key (voltage up) or
digital
voltmeter
(See page 26)
AD **
1. Connect a digital voltmeter to the AP605 (VREC) on the MAIN
board, and adjust
(voltage down) so that the voltage becomes 1.13 ± 0.02 V.
MAIN board
AP605 (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 AP605 (VREC) on the MAIN
board, and adjust
(voltage down) so that the voltage becomes 1.65 to 1.75 V.
MAIN board
AP605 (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 16).
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.
[VOL +]
key (voltage up) or
digital
voltmeter
(See page 26)
AD **
[VOL +]
key (voltage up) or
digital
voltmeter
(See page 26)
###S**
[VOL --]
, key so that the adjusted value
[VOL --]
key
[VOL --]
key