Roland JD-XA, Заметки по обслуживанию

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35
Jul. 2015 JD-XA
8. CV Adjust
This adjusts the output voltage of the CV OUT 1 and 2 jacks.
+————————————————+
|CV1 0V[1]: **|
|Press [ENTER] |
+————————————————+
1.
Connect the monaural miniature phone jack to the CV OUT 1 jack.
2.
Using the tester, while measuring the output voltage of the CV OUT 1
jack, press + or - to adjust the output voltage to 0±0.01 V .
3.
Press Enter .
A screen like the one shown below is displayed.
+————————————————+
|CV1 5V[1]: **|
|Press [ENTER] |
+————————————————+
4.
In the same way, press
+
or
-
to adjust the output voltage to
5±0.01 V
.
5.
Press
Enter
.
A screen like the one shown below is displayed.
+————————————————+
|CV1 0V[2]: **|
|Press [ENTER] |
+————————————————+
6.
In the same way, press + or - to adjust the output voltage to 0±0.01 V .
7.
Press Enter .
A screen like the one shown below is displayed.
+————————————————+
|CV1 5V[2]: **|
|Press [ENTER] |
+————————————————+
8.
In the same way, press
+
or
-
to adjust the output voltage to
5±0.01 V
.
9.
Press
Enter
.
A screen like the one shown below is displayed.
+————————————————+
|CV1 0V: ( **)|
|Press [ENTER] |
+————————————————+
10.
Verify that the output voltage is 0±0.01 V .
11.
Press Enter .
12.
For the CV OUT 2 jack, carry out the adjustment and verifying in the
same way as steps
1
through
9
.
13.
Press Write .
The results of adjustment are written and execution advances to the next
test item.
9. GATE Check
This verifies the output voltage of the GATE OUT 1 and 2 jacks.
+————————————————+
|GATE1: ON|
|Press [ENTER] |
+————————————————+
1.
Verify that the output voltage of the GATE OUT 1 jack is higher than 4 V .
2.
Press Enter .
A screen like the one shown below is displayed.
+————————————————+
|GATE1: OFF|
|Press [ENTER] |
+————————————————+
3.
Verify that the output voltage of the
GATE OUT 1
jack is lower than
0.5 V
.
4.
Press
Enter
.
5.
For the
GATE OUT 2
jack, verify in the same way as steps
1
through
3
.
6.
Press .
A screen like the one shown below is displayed.
+————————————————+
| Completed. |
| Turn off power.|
+————————————————+
This ends the Analog Adjustment Mode. Switch off the power.