Troubleshooting Terminal, Printer, and Serial Device Connections - Edition 5 (32022-90058)

Troubleshooting Procedures
Troubleshooting Pathway
Chapter 2
27
2. Testing DTC-Device Connections. If necessary, use TermDSM for more detailed
diagnostics. This must be done at another device or the console. Test DTC-device
connections first. This can detect faults within the device, the device cable, and parts
of the DTC circuitry. If DTC-device connections are not causing the problem, further
DTC diagnostics are suggested.
3. Testing the DTC. Using TermDSM, perform a DTC selftest. The selftest can detect
faults within specific field replaceable units (FRU) of the DTC. If the DTC passes the
selftest, the fault might be in the LAN. Proceed with LAN diagnostics.
4. Testing the LAN. LAN troubleshooting is beyond the scope of this manual. It
generally requires special tools and the expertise of an HP support representative.
Procedures to follow for the first three tasks in the troubleshooting pathway for
host-based management are summarized in the following sections.