MAP 0122: Network Print Server Attachment
Symptom Explanation Suspected FRUs/Causes
Network Print Server (NPS) Communication failures Host and print server configuration
Network print server
Logic board (includes parallel attachment)
LAN cable
Note:
For NPS 540+ (part number 30H4054) units attached to 4247 printers without an external power supply the printer
powers the unit through +5 V dc on pin of the printer parallel attachment connector.
NPS device part numbers 30H4082, 30H4083, 30H4055 cannot be powered by the printer and require an external
+12 V ac power supply.
There is no danger of damaging any NPS or other computer devices attached to the 4247 when there is +5 V dc
on the printer parallel interface pin 18.
Powering the NPS with the external power supply and by +5 V dc on the parallel connector at the same time will
not damage the NPS or printer logic board.
Chapter 1. Diagnosing Problems 59
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