Toshiba T200 User Manual page 36

Procedure 3 Printer Port LED Check on Resume Mode
The printer port LED displays IRT and test status by turning lights on and off as an eight-digit
binary value for resume mode.
NOTE: When performing this check, the Power-up option in the SETUP program
must be set to resume mode.
To use the printer port LED, follow these steps:
1. Turn on the computer's power, then set to resume mode.
2. Turn off the computer's power.
3. Connect the parallel cable (standard equipment) to the PRT port.
4. Plug the printer port LED into the parallel cable.
5. Connect the external keyboard to the KB port.
6. Turn on the computer's power.
7. Read the LED status from left to right.
.
8. Convert the status from binary to hexadecimal notation.
9. If final LED status is FFh (normal status), go to Procedure 3.
10. If final LED status matches any of the test status values in Table 2-2, perform
Check 1.
Table 2-2 Printer Port LED Resume Mode Error Status
Error status
00H RAM BIOS error
F0H Press the reset switch.
F1H Suspend process error (The system will suspend while FDD is accessed, etc.)
F2H The system has optional ROM, or optional card (CGA, MDA).
F4H Backup RAM checksum error
F5H Main memory checksum error
F6H Video RAM checksum error
F7H Extended memory checksum error
F8H Backup RAM checksum error
F9H Main memory checksum error
FAH Video RAM checksum error
FBH Extended memory checksum error
FDH Card modem error (Card modem will be removed while system is in resume, etc.)
FEH Password error (The password will be erased before it is suspended.)
2-16
Meaning of status
T200/T200CS