Power-On Reset (Por) Sequence; Using Safe Mode - Lexmark M5150 Service Manual

Power‑on Reset (POR) sequence
When you turn on the printer, it performs a POR sequence.
Check for correct POR functioning of the base printer by observing the following:
1
The LED turns on.
2
The main fan turns on.
3
The operator panel turns on.
4
The fuser heater turns on. The fuser takes longer to warm up from a cold start than a warm start.
5
The operator panel LED starts blinking.
6
A splash screen appears on the display. The following errors or messages may appear:
•
Close Door or Insert Cartridge appear if the front access door is open or the print cartridge is missing
• Cartridge errors, such as Defective Cartridge or Missing Cartridge
7
Ready appears on the display.
8
The main drive motor turns on.
9
The EP drive assembly drives the developer shaft located in the print cartridge.
10
The exit rollers turn.
11
The printer may begin calibration.

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. See
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:
•
Enter Safe Mode from the Configuration menu, and then POR the printer. See
•
For 2.4" display models, press the Stop and Back keys, and then POR the printer.
•
For 4.3" and 7" display touchscreen models, press the 6 and 7 keys, and then POR the printer.
•
For LED models, you must contact the next level of technical support for assistance.
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
"Safe Mode print behavior" on page
Engine behavior
Reports that duplex printing is disabled. Duplex print option is not selectable.
Diagnostic information
54
54.
"Safe Mode" on page
Control panel behavior
4063
344.