Lexmark 4039-1XX, Руководство по обслуживанию

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16
Service Manual
Blank Page
Inspect the printhead shutter for proper operation and make sure the
actuator on top of the cartridge is present and extends into the
printhead shroud when the printer top cover is closed. A failed
printhead will cause a 931 Service error rather than blank output.
Check the continuity of the HVPS cable. The HVPS and transfer roll
contacts should be clean and spring back when pressed. Make sure
the transfer roll contact under the left bearing is making contact with
the HVPS.
Make the following voltage checks while running the print test
continuously and again while idling.
10R/12R/12C/
12L
16L
Voltage while
Printing Voltage while
Idling
J20-1 to J20-4 J17-1 to J17-4 Less than
1VDC +21-26VDC
J20-2 to J20-4 J17-2 to J17-4 Greater than
1VDC Less than
5VDC
J20-3 to J20-4 J17-3 to J17-4 The meter
should fluctu-
ate slightly
between each
page. Less than
5VDC
J20-8 to J20-4 J17-8 to J17-4 Less than
1VDC +21-26VDC