| Symptom/Error |
FRU/Action |
| Drive letters changed unexpectedly after installing OS/2 or a SCSI
adapter. |
1. This is normal. Use setup to change drive letters back to
desired settings. |
| Intermittent failures. (See "Undetermined
Problems" before replacing FRUs) (*) |
1. Power Supply
2. Power Supply Fans
3. Any Device or Adapter |
| Diskette drive LED stays on. |
1. Diskette Drive |
| Hard disk LED stays on. |
1. Hard Disk Drive
2. System Board |
| Hard disk LED not working but computer is completely functional. |
1. Control/Speaker Assembly
2. System Board |
| Reference Diskette does not start. |
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
4. Reference Diskette |
| Read / write errors on 2.88MB floppy. If drive was just installed
either down level IML code was loaded or that model doesn't support 2.88MB
drives. |
1. Use View configuration to see if floppy is listed as a 2.88MB.
If not, load the latest RefDisk onto System Partition. |
| Image Adapter/A Memory Test failure indicated by graphic representation
of adapter. |
1. Memory Module (shown in graphic) |
| IML image was updated, Diskette and F1 error prompt appears. |
1. Verify an operating system has been loaded onto default HD. |
| IML image was updated, Diskette icon appears and I99903XX appears on
information panel (95). |
1. Verify an operating system has been loaded onto default HD. |
| Internal Data/Fax modem doesn't communicate with remote modem/fax.
Note: Make sure the serial device power option is set to "on" under
Set Features |
1. Check that communication software settings are suitable for communication.
2. Internal Data/Fax Modem
3. System Board |
| Internal Data/Fax modem does not respond to software and diagnostics
find no problem. |
1. Check in power configuration and verify the modem is turned on. |
| Program load error during remote IPL from the file server. |
1. Network Adapter |
| Program loads from hard disk or a non system disk or disk error (with
the RefDisk in drive A). |
1. Diskette Drive
2. System Board
3. Power Supply
4. Reference Diskette |
| No colors on a color display. (Connect display to VGA port and run
Enhanced VGA test to see if display is the problem) |
1. Display (any type)
2. VGA terminator |
| Screen colors change. |
1. Display (any type)
2. DisplayAdapter
3. System Board |
| One or more keys don't work and the computer is otherwise functional.
(Check keyboard) (*) |
1. Keyboard
2. Keyboard Cable
3. System Board |
| Power supply appears to fail at power-on but if you disconnect optional
hard disks the problem goes away (load problem). (See "Settingthe
Motor-Start Jumper" |
1. Motor Start Jumper (Remove motor start start jumper from one
or more option drives.) |
| Power-on indicator does not come on, fan runs and computer is functional. |
1. Control/Speaker Assembly |
| Power-on indicator does not come on, fan runs and computer is not functional. |
1. System Board
2. Power Supply |
| Power-on indicator does not come on, fan not running and computer is
not functional.(See "Undetermined Problems"before
replacing FRUs) (*) |
1. Power Supply
2. System Board |
| Operating system does not work or system starts up in BASIC. (See"IMLand
IPL Errors" before replacing FRUs) |
1. Default Hard Disk Drive |
| Real Time Clock loses time. Not always a hardware failure. See "RTC
Problems) |
1. Default Hard Disk Drive |
| Computer cannot be powered-off. |
1. Control/Speaker Assembly
2. System Board
3. Power Supply |