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2 Troubleshooting 2.11 Parallel Port
2.11 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 system board. If the Parallel Port
malfunctions, the 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 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 2.
Check 2 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 3.
Check 3 The CPU may be faulty. Disassemble the computer following the steps
described in Chapter 4 and replace the CPU with a new one.
2-22 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual