Sony MZ-N505 Service Manual - Page 23

Temperature, Coreection

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MZ-N505 2. Press the X key to write the adjusted value. Adjustment and Connection Location: MAIN board (See page 25) • Adjustment Method of Vl PWM Duty (L) (item number: 764) Set LCD display 764 **: Adjusted value AD ** 1. Connect a digital voltmeter to the AP913 (VLO) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.30 ± 0.01 V. digital voltmeter MAIN board AP913 (VLO) AP602 (GND) 2. Press the X key to write the adjusted value. Adjustment and Connection Location: MAIN board (See page 25) • Adjustment Method of Vl PWM Duty (H) (item number: 765) Set LCD display 765 AD ** **: Adjusted value 1. Connect a digital voltmeter to the AP913 (VLO) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.55 ± 0.01 V. digital voltmeter MAIN board AP913 (VLO) AP602 (GND) 2. Press the X key to write the adjusted value. Adjustment and Connection Location: MAIN board (See page 25) • Adjustment Method of Vrec PWM Duty (L) (item number: 766) Set LCD display 1. Connect a digital voltmeter to the TP (VREC) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 1.13 ± 0.02 V. digital voltmeter MAIN board TP (VREC) AP602 (GND) 2. Press the X key to write the adjusted value. Adjustment and Connection Location: MAIN board (See page 25) • Adjustment Method of Vrec PWM Duty (H) (item number: 767) Set LCD display 767 **: Adjusted value AD ** 1. Connect a digital voltmeter to the TP (VREC) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 1.65 to 1.75 V. digital voltmeter MAIN board TP (VREC) AP602 (GND) 2. Press the X key to write the adjusted value. Adjustment and Connection Location: MAIN board (See page 25) TEMPERATURE COREECTION • 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 ###S** 2. Measure the ambient temperature. 3. Adjust with [VOL +], [VOL --] key so that the adjusted value (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. 766 **: Adjusted value AD ** 23

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23
MZ-N505
2.
Press the
X
key to write the adjusted value.
Adjustment and Connection Location:
MAIN board
(See page 25)
•
Adjustment Method of Vl PWM Duty (L)
(item number: 764)
1.
Connect a digital voltmeter to the AP913 (VLO) on the MAIN
board, and adjust
[VOL°+]
key (voltage up) or
[VOL°--]
key
(voltage down) so that the voltage becomes 2.30
±
0.01 V.
2.
Press the
X
key to write the adjusted value.
Adjustment and Connection Location:
MAIN board
(See page 25)
•
Adjustment Method of Vl PWM Duty (H)
(item number: 765)
1.
Connect a digital voltmeter to the AP913 (VLO) on the MAIN
board, and adjust
[VOL°+]
key (voltage up) or
[VOL°--]
key
(voltage down) so that the voltage becomes 2.55
±
0.01 V.
2.
Press the
X
key to write the adjusted value.
Adjustment and Connection Location:
MAIN board
(See page 25)
•
Adjustment Method of Vrec PWM Duty (L)
(item number: 766)
764
AD **
Set LCD display
**
: Adjusted value
digital
voltmeter
MAIN board
AP913 (VLO)
AP602 (GND)
1.
Connect a digital voltmeter to the TP (VREC) on the MAIN
board, and adjust
[VOL°+]
key (voltage up) or
[VOL°--]
key
(voltage down) so that the voltage becomes 1.13
±
0.02 V.
2.
Press the
X
key to write the adjusted value.
Adjustment and Connection Location:
MAIN board
(See page 25)
•
Adjustment Method of Vrec PWM Duty (H)
(item number: 767)
1.
Connect a digital voltmeter to the TP (VREC) on the MAIN
board, and adjust
[VOL°+]
key (voltage up) or
[VOL°--]
key
(voltage down) so that the voltage becomes 1.65 to 1.75 V.
2.
Press the
X
key to write the adjusted value.
Adjustment and Connection Location:
MAIN board
(See page 25)
TEMPERATURE
COREECTION
•
Adjustment Method of Temperature Correction
1.
Select the manual mode of test mode, and set the item number
015 (see page 14).
2.
Measure the ambient temperature.
3.
Adjust with
[VOL°+]
,
[VOL°--]
key so that the adjusted value
(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.
digital
voltmeter
MAIN board
AP913 (VLO)
AP602 (GND)
765
AD **
Set LCD display
**
: Adjusted value
766
AD **
Set LCD display
**
: Adjusted value
digital
voltmeter
MAIN board
TP (VREC)
AP602 (GND)
767
AD **
Set LCD display
**
: Adjusted value
digital
voltmeter
MAIN board
TP (VREC)
AP602 (GND)
015
###S**
Set LCD display
###
: Address
**
: Adjusted value