Toshiba T200 User Manual page 33

Procedure 2 Printer Port LED Check on Boot Mode
The printer port LED displays IRT and test status by turning lights on and off as an eight-digit
binary value for boot mode. Figure 2-2 shows the printer port LED.
NOTE: When performing this check, the Power-up Mode option in the SETUP pro-
gram must be set to boot mode.
To use the printer port LED, follow these steps:
1. Turn on the computer's power, then set to boot 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 computer's parallel cable.
5. Connect the external keyboard to the KB port.
6. Hold down the space bar and 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 2-1, perform
Check 1.
NOTE: If an error condition is detected by the IRT, the printer port LED displays an
error code after the IRT ends. For example, when the printer port LED displays 1F
and halts, the IRT has already completed display initialization. In this instance, the
IRT indicated an error was detected during system memory test.
T200/T200CS
Figure 2-2 Printer Port LED
2-13