Toshiba PSAA9, PTA71, PTA70 manual Parallel PortOptional

2 Troubleshooting 2.13Parallel Port(Optional)

2.13 Parallel Port(Optional)

To check if the computer’s Parallel Port is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 Test Program Check

Procedure 2 Connector Check

Procedure 1 Test Program Check

Execute the Parallel Port test program available as part of the maintenance test program. This program checks the Parallel Port. Insert the Bootable CD into the CD. Turn on the computer and run the test. See Chapter 3 for information on how to perform the test.

If any error is detected by the test, go to Procedure 2

Procedure 2 Connector Check

The Parallel Port connector is mounted on the parallel board. If the Parallel Port malfunctions, the parallel board or or cable or system board or CPU might be faulty. Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 The parallel board may be faulty. Replace it with a new one following the instructions in Chapter 4. If the Parallel Port is still not functioning properly, perform Check 2.

Check 2 The parallel board cable may be faulty. Replace it with a new one following the instructions in Chapter 4. If the Parallel Port is still not functioning properly, perform Check 3.

Check 3 The system board may be faulty. Replace it with a new one following the instructions in Chapter 4. If the Parallel Port is still not functioning properly, perform Check 4.

Check 4 The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform Check 5.

Check 5 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one.

2-26 Satellite A100/A105 / TECRA A7 Maintenance Manual