Specifications

Troubleshooting EPOST (Extended Power-On Self Test) - 6
EPOST (Extended Power-On Self Test)
EPOST behaves exactly like POST in that it checks the same three
areas in the same order and displays an error array if a fault is
detected. However, EPOST has more extensive testing and its error
arrays are completely different. When a fault is detected during
EPOST, all LEDs extinguish and the status panel will loop through
the following sequence until you switch off power:
• All LEDs On for approximately one second
• All LEDs Off for approximately one second
• EPOST Error Code for approximately one second
• All LEDs Off for approximately two seconds, then repeat loop
If no error is detected by EPOST, an EPOST test page will print
before control is passed on to the PostScript interpreter (if a
duplex unit is attached, two double-sided pages will print).