HP DL120 - ProLiant - G5 Troubleshooting Guide download pdf (Page 56)

Hardware problems 56

Cable problems

Drive errors, retries, timeouts, and unwarranted drive failures when using an older

Mini SAS cable

Action: The Mini SAS connector life expectancy is 250 connect/disconnect cycles (for external, internal, and

cable Mini SAS connectors). If using an older cable that could be near the life expectancy, replace the Mini

SAS cable.

Local I/O cable problems

NOTE: The local I/O cable is used only with HP ProLiant p-Class server blades.

Action: If the local I/O cable does not have hot-plug functionality, be sure you are not using a PS/2 keyboard

or mouse. With a PS/2 keyboard or mouse, the local I/O cable cannot be connected as a hot-plug device.

Connect the local I/O cable before booting the server, or switch to USB devices (if supported) to use the local

I/O cable hot-plug functionality.

Modem problems

No dial tone exists

Action:

1. Be sure the cables are plugged in as specified in the modem documentation.

2. Connect a working telephone directly to the wall jack, and then test the line for a dial tone.

3. If no dial tone is detected, the phone line is not working. Contact the local telephone company and

arrange to correct the problem.

No response occurs when you type AT commands

Action: Reconfigure the COM port address for the modem.

1. Be sure the communications software is set to the COM port to which the modem is connected.

2. Check IRQ settings in the software and on the modem to be sure no conflict exists.

3. Type AT&F at the command prompt to reset the modem to factory-default settings.

4. Be sure you are in terminal mode and not MS-DOS mode.

5. Refer to the HP website (http://www.hp.com) for a complete list of AT commands.

AT commands are not visible

Action: Set the echo command to On using the AT command ATE.

Data is displayed as garbled characters after the connection is established

Action:

1. Be sure both modems have the same settings, including speed, data, parity, and stop bits.

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HP DL120 - ProLiant - G5 Troubleshooting Guide Page 56