Reference Table 6A, Network Server Problems-External Nps; Reference Table 7, Power Supply Connector Pins And Voltages - IBM V03 Maintenance Information

Symptom
Note: The term "ping" means to send a signal in anticipation of a return response. The return response indicates that the printer
and the host are communicating.
Reference table 6a, network server problems—External NPS
Symptom
LAN card will not
communicate with host
LAN card communicates
with host but printer does
not print
Note: The term "ping" means to send a signal in anticipation of a return response. The return response indicates that the printer
and the host are communicating.

Reference table 7, power supply connector pins and voltages

Table 18. Voltages
Pin
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Probable cause
Probable cause
Network problem
Data stream problem
Voltage
N/A
−5 V dc
+5 V dc (power down signal)
+5 V dc
+5 V dc
Action
Action
Select correct token ring speed. Turn off the NPS unit and try again.
1. Have the customer "ping" the printer to verify communications.
2. Have the customer verify host and print server configuration. Including IP
address, gateway address, and subnet mask.
3. Have the customer check physical network cabling.
1. Have the customer check print job stream.
2. Take a data trace of the attachment and contact support.
Range
−5.25/ −4.75 V dc
+4.75 / +5.25V dc
+4.75 / +5.25 V dc
+4.75 / +5.25 V dc
Chapter 1. Diagnosing problems
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