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2 Troubleshooting Procedures 2.4 System Board Troubleshooting
Procedure 3 Printer Port LED Check on Suspend/Resume Mode
The printer port LED displays the IRT status and error status by turning lights on and off as an
eight-digit binary value after turning on of the power.
To use the printer port LED, follow the steps below:
1. Turn on the computer’s power and set it to the resume mode.
2. Turn off the computer’s power.
3. Plug the printer port LED into the parallel port (printer port).
4. Read the LED status from left to right as you face the computer.
5. Convert the status from binary to hexadecimal notation.
6. If the final LED status is FFh (normal status), go to Procedure 4.
7. If the final LED status matches any of the test status values in Table 2-4, perform
Procedure 5.
2-30 Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)