Lexmark T65x and X65x Mono Product Study Guide Rev 1.47
For Training Purposes Only 6/3/2009
27
Service Mode
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 fuser cooling fan turns on.
4. The fuser unit assembly lamps turn on.
5. The system card assembly cooling fan turns on.
6. Operator panel LED becomes solid.
7. The transport motor turns on.
Entering Diagnostics mode on the T65x
1. Press and hold and .
2. Turn on the printer.
3. Release the buttons after ten seconds.
NOTE: Powering up in diagnostic mode allows the technician to test the machine (using a generic
FRU) and then remove the generic FRU, if the FRU did not fix the problem. The generic FRU will
mirror and lock during a standard POR.
For a complete listing of the printer menu tree, consult the Service Manual.
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