Digital Equipment DECstation 5000/100 Series, Maintenance Manual

Page: 112 / 392

Run the external loopback transmit and
receive test on the communications
connector attached to the device that
reported the problem. Refer to
"To Use the Transmit and Receive Test"
later in this chapter for directions.
Yes
No
Does the transmit and receive test
report an error?
Refer to "To Use the Transmit
and Receive Test" later in this
WS33M105
Refer to "To Use the Pins Test To
to the device that reported the problem.
the communications connector attached
Run an external loopback pins test on
No
Yes
Refer to "To Use the Pins Test
(Continued)
Does the pins test report an error?
End
End
Troubleshoot" later in this chapter for
directions.
To Troubleshoot" later in this
chapter to troubleshoot.
End
Replace the system module.
report an error?
Does the serial line test script
No
Yes
chapter to troubleshoot.
Figure 4-10. Troubleshooting a printer, modem, or other serial line
device
4–34 Identifying Failed FRUs