Installation guide

WS33P019
Replace the system module.
No
Yes
Does the serial line test
End
script report an error?
(Continued)
Run the external loopback
transmit and receive test on
the communications
connector attached to the
device that reported the
problem.
Does the transmit and
receive test report an error?
reported the problem.
attached to the device that
communications connector
pins test on the
Run the external loopback
Yes
Does the transmit and
receive test report an error?
Yes
Troubleshoot according to
the error message.
Troubleshoot according to
the error message.
No
No
Figure 2-20 Troubleshooting a printer,
modem, or other serial line
device, 2 of 2
TROUBLESHOOTING TOOLS 2–37