Troubleshooting Flowchart - Toshiba T3300SL Maintenance Manual

2.2

Troubleshooting Flowchart

Use the flowchart in Figure 2-1 as a guide to determine which FRU troubleshooting procedures to
execute. Before performing the flowchart steps, verify the following:
Verify with the customer that Toshiba MS-DOS is loaded on the computer. Other
non-Toshiba operating systems will cause the computer to malfunction.
Make sure all optional equipment is disconnected from the computer.
Make sure the floppy disk drive is empty.
NOTE: If you forget the password and cannot start up the computer, connect the printer port
wraparound board (F31PRT), then turn the POWER switch on. The computer will override
the password function by erasing the current password.
Insert the Toshiba MS-DOS
diskette into the FDD.
Turn the Power Switch ON
and wait 5 Seconds.
POWER INDICATOR
MEMORY TEST XXXXKB
message displayed
MEMORY TEST XXXKB
message proceed from
2-6
START
Does the
illuminate?
YES
Is an
Error Message
displayed?
NO
Is the
?
YES
Does the
0KB to 640KB?
YES
1
Figure 2-1 Troubleshooting flowchart
Perform Power Supply Board
NO
Troubleshooting Procedures in
Section 2.3.
Perform System Board
YES
Troubleshooting Procedures in
Section 2.4.
NO
Perform Display Troubleshooting
Procedures in Section 2.8.
Perform System Board
NO
Troubleshooting Procedures in
Section 2.4.