Table 2-3 Error Symptoms List (Continued)
NOTE: To diagnose a problem, first find the error symptom in the left column. If directed to a check procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first Action/ FRU listed in right column is the most likely cause.
Error Symptoms | Action/FRU |
|
|
USB device failed. | Ensure that the USB device |
| is properly installed. |
| Refer to the service manual |
| for the USB device. |
| USB device. |
| USB device cable. |
| System board. |
|
|
USB device problems. | Refer to the service manual |
| for the USB device. |
|
|
Diagnostic Program | |
|
|
Diagnostics programs | Reboot the system from the |
cannot be executed. | diagnostics diskette. |
| Load default settings. |
| Diagnostics diskette. |
| Memory module. |
| System board. |
|
|
Missing diagnostics file(s). | Diagnostics diskette. |
|
|
Keyboard | |
Some or all keys on | “Keyboard” on page 65. |
keyboard do not work. |
|
|
|
Power Supply | |
|
|
Pressing power switch does | Power switch cable |
not turn off the system. | assembly |
(Only unplug power cord | “Power Supply” on page 68 |
from electrical outlet can |
|
turn off system.) |
|
|
|
Pressing power switch does | Ensure the power override |
not turn on system. | switch (situated at the back |
| of the machine, just above |
| the connector for the power |
| cable) is not set to off. |
| Power switch cable |
| assembly. |
|
|
Check Procedures 53
