HP 4200 User Manual page 98

Power LED is not lit.
Network LED never
blinks.
Alert LED remains
lit after bootup is
completed.
Power failure. Restore AC power. Bad power cord or power cord
unplugged. Verify and replace cord.
Network connection is bad. Verify network cable connections,
replace cable.
Critical failure is detected. Note the message on LCD front panel.
Power cycle the unit. If the problem persists, contact HP.