4026-0XX
Power-On Self Test (POST)
When you turn the printer on, it performs a
1.All LEDs come on solid.
2.The fan turns on for 2 seconds.
3.All the LEDs turn off.
4.The engine board checks the status of the cover interlock switch.
5.The LEDs begin to turn on then off sequentially.
6.The fan turns off.
7.The engine board checks the status of the paper exit sensor.
8.The engine board checks the status of the thermistor.
9.The fuser lamp turns on.
Note: The printer may be idle for up to 40 seconds as the fuser warms to operating temperature. Printer idle time is shorter if the fuser is already warm.
10.The polygon motor (printhead motor) turns on.
11.The main motor turns on.
12.The paper feed gears turn.
13.The print cartridge drive gear engages.
14.The paper feed
15.All the LEDs turn off.
16.Models
•The controller board checks flash ROM installation.
•The controller board verifies that flash is formatted.
•The controller board attempts to format flash if unformatted.
•The Data LED blinks during format.
•The printer continues POST after format is complete.
•If format fails, a “Flash Memory Failure” error displays.
17.The main drive motor turns off.
