Toshiba T2000 Maintenance Manual page 32

one of the error status codes in Table 2-2, replace the system board.
Table 2-2 Normal status and error status of the printer port LED
Normal Error
Table 2-2 Normal status and error status of the printer port LED (continued)
Status Status
1Bh 9Bh
1Ch
1Dh 9Dh
1Eh 9Eh
1Fh 9Fh
20h A0h
21h A1h
22h A2h
23h A3h
24h A4h
25h A5h
26h A6h
NOTE: If the error occurs on the 19h to 24h normal status, the system does not halt.
The error message remains on the screen and when the IRT program is finished, these
error messages are erased.
Status
F1h
F2h
F3h
F4h
F5h
F6h
F7h
2-18
Meaning
CMOS battery test
Reserved
Setup RAM size from CMOS (413h)
Size conventional RAM
Conventional RAM test
PIC ch1/ch2 test
NMI check
Interrupt process test (INT8)
Protect mode test
Size extended RAM
Conventional and extended RAM test
Protect mode exception test
An FDD was running when the power was turned off.
Power was turned off while the IRT was running.
The hardware reset switch was pressed.
An external display card was attached when the power
was turned off.
An external expansion memory card was attached when
the power was turned off.
An external display card was attached while the power
was turned off.
An internal display card was changed while the power
was turned off.
Backup RAM has been corrupted.
The backup RAM checksum, system RAM checksum,
V-RAM checksum, or expansion memory checksum in
backup RAM has been corrupted.
System RAM has been corrupted.
V-RAM has been corrupted.
Internal expansion memory has been corrupted.
Explanation
Process
1 beep key wait
Continue
Continue
Continue
3 beeps continue
Continue
Continue
3 beeps continue
3 beeps continue
Continue
3 beeps continue
3 beeps continue