Workstation 5 Field Service Guide
3-31
Workstation 5 Troubleshooting
Peripheral Related
Peripheral Related
IDN Port COM4 (RS422) Does Not Function
Symptoms: When using the IDN Print test, or attempting print from the
application, the IDN printer does not print or prints erratically. In other cases,
printing may occur, but the application does not receive confirmation. The
following assumes you are working with a patch cable and IDN printing device
that is known to be functional.
•
Examine the 8-Pin modular connector looking for pins that may be pushed
out of position. Carefully move the pins into the correct position if
necessary.
•
Defective interface.
o
Transceivers U24 (TX) and U25 (RX).
o
Voltage Level Shifter U2. (Under the CF Daughter Card)
o
IDN/RS232 Select Logic.
o
UART - U41.
o
Damaged/Defective RS422 Termination Components. Fuses F3 - F6,
clamping diodes D13-D16, resistors R103, R104, R112, R113, R117,
R125 and R132.
•
Defective or damaged IDN Module in the printer.
o
Substitute the IDN module.
RS232 COM4 Peripheral Device Does Not Function
Symptom: An RS232 peripheral connected to the IDN Port does not function.
•
Examine the 8-Pin modular connector looking for pins that may be pushed
out of position. Carefully move the pins into the correct position if
necessary.
•
Defective RS232 Line Driver/Receiver.
o
U18.
•
Defective IDN/RS232 Select Logic.
