Symptom Probable Cause Action
Network or packet light
continues to flash after
power on
Internal error occurred For external NPS (all models):
1. Disconnect the power cable at the NPS unit.
2. Wait 10 seconds, then reconnect the power cable.
3. If the problem continues, replace the NPS unit.
For LAN attachment (Model 003):
1. Power off/on the printer. LAN must be shown on the display.
2. If the problem continues, replace the LAN card. See “Model 003
Attachment Cards: Serial, Twinax, LAN, Coax” on page 359.
Test page will not print For external NPS (all models):
1. Check that parallel configuration values are at factory defaults.
2. Unplug the NPS unit at the parallel port and reseat.
3. Press and hold the test button on the NPS unit until the Network or
Packet light flashes, then release the test button.
4. If the test page still does not print, perform the parallel port wrap test on
the printer.
5. If the parallel port wrap test passes, replace the NPS unit.
6. If the parallel port wrap test fails, replace the printer logic board.
For LAN attachment card (Model 003):
1. Check that parallel configuration values are at factory defaults.
2. Reseat the LAN card.
3. Press and hold the test button on the LAN card until the network light
flashes, then release the test button.
4. Remove the LAN card and perform the parallel port wrap test on the
printer.
5. If the parallel port wrap test passes, replace the LAN card.
6. If the parallel port wrap test fails, replace the logic board.
Chapter 1. Diagnosing Problems
153
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