Power-On Reset (Por) Sequence; Using Safe Mode - Lexmark MX310 Series Service Manual

Power‑on Reset (POR) sequence
When you turn the printer on, it performs a POR sequence.
Check for correct POR functioning of the base printer by observing the following:
1
The control panel indicator light turns on.
2
The control panel display turns on.
3
A splash screen appears on the display.
4
The cooling fan turns on.
5
The fuser heater turns on.
Note: The fuser takes longer to warm up from a cold start than a warm start.
6
The main drive motor turns on.
7
The EP drive assembly drives the developer shaft located in the imaging unit.
8
The exit rollers turn.
9
The control panel indicator light blinks.
10
Ready appears on the display.

Using Safe Mode

Safe Mode lets the printer continue to operate in a special limited mode in which it attempts to continue offering as
much functionality as possible despite known issues.
Warning—Potential Damage: Safe Mode is intended as a short‑term workaround and should be used only in the
case of a non‑critical error when a print job must be completed before service can be arranged to repair the printer.
The printer must be returned to standard operating mode before diagnostics can be run or full‑function printing can
continue.
You can enter Safe Mode in one of the following ways:
•
Enable Safe Mode from the Configuration menu, and then POR the printer.
•
Press the Stop and Back keys, and then POR the printer.
Return the printer to standard operating mode to service the printer and return to full‑function printing.
Safe Mode print behavior
The following table outlines the behavior for this printer model while in Safe Mode:
Safe Mode engine features
Simplex printing only
Ignore duplex sensor
Ignore bin full sensor
Print at narrow media operating point Pages will be printed slower.
Ignore narrow media sensor
Engine behavior
Will report that no duplexer is installed.
Bin full messages will not be reported.
Narrow media will print without
restrictions.
Diagnostic information
36
Control panel behavior
Duplex print option will not be
selectable.
Bin full messages will not occur.
N/A
N/A
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