HP ProLiant DL380 G4 with MSA1000 HP ProLiant Servers Troubleshooting Guide - Page 56

Cable problems, Local I/O cable problems, Modem problems

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Page 56 highlights

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. Hardware problems 56

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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 (
) 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.