Toshiba T2150 series Maintenance Manual page 34

Table 2-2 Printer port LED resume mode error status
Error status
F1H RAM BIOS error
F2H The system has optional ROM, or optional card (CGA, MDA).
F5H Main memory checksum error
F6H Video RAM checksum error
F7H Extended memory checksum error
Procedure 4 Diagnostic Test Program Execution Check
Execute the following tests from the Diagnostic Test Menu. Refer to chapter 3, Tests and
Diagnostics, for more information on how to perform these tests.
1. System test
2. Memory test
3. Printer test
4. ASYNC test
5. Real Timer test
6. PCMCIA test
7. SOUND test
8. CD-ROM test
If an error is detected during these tests, go to Procedure 5.
Procedure 5 Replacement Check
The system board or the sound board may be damaged. Disassemble the T2150 series follow-
ing the steps described in chapter 4, Replacement Procedures, and perform the following
checks:
Check 1. Replace the system board with new one. Refer to chapter 4 for instructions on
how to remove and replace the system board.
Check 2. Replace the sound board with new one. Refer to chapter 4 for instructions on
how to remove and replace the sound board.
T2150 Series
Meaning of status
2-15