Toshiba T4500 User Manual page 28

Insert the diagnostics disk into the FDD,
then run the diagnostics test program.
detected by any of the
The system is normal.
If the diagnostics program cannot detect an error, the problem may be intermittent. The Running
Test program should be executed several times to isolate the problem.
Check the Log Utilities function to confirm which diagnostic test detected an error(s), then per-
form the appropriate troubleshooting procedures as follows:
1. If an error is detected on the system test, memory test, display test, ASYNC test, printer
test, or real timer test, perform the System PCB Troubleshooting procedures in Section 2.4.
2. If an error is detected on the keyboard test, perform the Keyboard Troubleshooting proce-
dures in Section 2.7.
3. If an error is detected on the floppy disk test, perform the Floppy Disk Drive Troubleshoot-
ing procedures in Section 2.5.
4. If an error is detected on the hard disk test, perform the Hard Disk Drive Troubleshooting
procedures in Section 2.6.
2-4
Do typed
characters appear
correctly?
Did
the diagnostics
test program load
properly?
Perform each test.
Is
an error
diagnostic tests?
Figure 2-1 Troubleshooting Flowchart (2 of 2)
Perform the Keyboard Troubleshooting
procedures in Section 2.7.
Perform the Floppy Disk Drive Trouble-
shooting procedures in Section 2.5.
After confirming which diagnostic test has
detected an error, perform the appropriate
procedures as outlined below.