4100tn displays asterisks upon bootup

[dony]

Does anyone know why asterisks display after the printer boots up? The memory check seems to be okay.

I've tried to do a cold reset and go into service mode with no luck. Any suggestions?

[ptjeff1]

Usually it's bad memory, firmware card, jetdirect card(s), or formatter. Remove any cards in the EIO slots, and any extra memory and see if the problem persists. If you have another Laserjet 4100 swap firmware, otherwise you might have a bad formatter.

[dony]

Thanks, Jeff. I'll try it out.