Lexmark C935 Series, Service Manual

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2-2
Printer Service Manual
5057-XXX
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Confirm the installation status
Be sure to check the following items before starting the troubleshooting procedures.
•
With the power cord unplugged from the wall outlet, check that the cord is free from breakage, short-circuit,
disconnected wire, or incorrect connection in the power cord.
•
The printer is properly grounded. Check the power cord ground terminal.
•
The printer is not installed at a place subjected to extreme temperature, extreme humidity or rapid changes
in temperature.
•
The printer is not installed close to water service, humidifier, heat generating unit, fire, in a very dusty
place, or a place exposed to air flow from the air conditioning system.
•
The printer is not installed in a place where volatile gas or inflammable gas is generated.
•
The printer is not installed in direct sun.
•
The printer is installed on a level and stable surface.
•
Media meets specifications and is installed properly.
•
Customer maintenance parts have been replaced at the specified intervals.
•
Check all attached options for proper attachment and electrical connection.
•
Refer to the User’s Guide for proper installation.
Power-on Reset sequence
The following is an example of the events that occur during the POR sequence:
1.
Turn the machine on.
2.
The Lexmark splash screen appears with a progress bar in the center until the code is loaded.
3.
The scanner exposure lamp flashes several times.
4.
The fuser cooling fan turns on.
5.
The fuser unit assembly lamps turn on.
6.
The RIP card assembly cooling fan turns on.
7.
Operator panel LED becomes solid.
8.
The transport motor turns on.
To enter the diagnostic menu:
1. Turn off the printer.
2. Press and hold the
and buttons simultaneously.
3. Turn on the printer.
4. Release the buttons after 10 seconds.