Diagnostic Information; Power-On Self Test (Post) Sequence; Troubleshooting Tables - Lexmark Pro900 Series Service Manual

Lexmark Pro900 Series

2. Diagnostic information

Power-On Self Test (POST) sequence

Plug the All-In-One into an electrical outlet, and press the Power button.
The All-In-One does a Power-On Self Test (POST) sequence.
1. The Power button, Copy button, and Color button lights come on.
2. The following will be displayed on the LCD screen:
Lexmark
3. The purge pump runs, and then shuts off.
4. The carrier moves off of the maintenance station, and then returns.
5. The scanner assembly moves from the homing position, and then returns.
6. The Wi-Fi light stays on.
7. Copies will be displayed on the LCD screen.
If any of these fail to occur, remove and reinstall the print cartridge, and then repeat the POST. If the POST remains
incomplete, then see "Service checks" on page

Troubleshooting tables

The All-In-One has the capability to report internal errors. This is accomplished by displaying the error code on the
operator panel LCD. Also, some errors are reported to host through Extended NPA Device Status Alert (DSA). See
Consumer Printer Division Host-Printer Communications Specification for more details on NPA and DSA.
There are four classes of All-In-One errors:
•
POST errors
•
Catastrophic unrecoverable errors
•
Paper handling errors
•
Printhead errors
Note: Each error will have a unique, 4-digit code.
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Service Manual
2-11. Find the symptom, and take corrective action.