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4039-1XX
10R/12R/12C/
12L
J20-1 to J20-4
J20-2 to J20-4
J20-3 to J20-4
J20-8 to J20-4
.
10P
J14-1 to J14-4
J14-2 to J14-4
J14-3 to J14-4
J14-8 to J14-4
If any voltages are not correct replace the system board.
Note: "Contrast" on the Diagnostics menu (changed to "Transfer" on
4039 plus machines) does not adjust the print contrast but changes
the transfer algorithm slightly.
Users who run large jobs with very dense graphics in high humidity
environments may get some print quality improvement from
changing this setting; users with more normal jobs will see no
difference.
Make sure the HVPS contacts to the transfer roll housing are in good
condition.
14
Service Manual
16L
J17-1 to J17-4
J17-2 to J17-4
J17-3 to J17-4
J17-8 to J17-4
Voltage while Printing
Less than 5VDC
Less than 5VDC
The meter should
fluctuate slightly
between each page.
1VDC
Voltage while
Printing
Less than
1VDC
Greater than
1VDC
The meter
should fluctu-
ate slightly
between
each page.
Less than
1VDC
Voltage
while Idling
0VDC
0VDC
0VDC
6VDC
Voltage while
Idling
+21-26VDC
Less than
5VDC
Less than
5VDC
+21-26VDC
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