Toshiba S2 用户手册

2.8  Printer Port Troubleshooting 

To determine if the computer’s printer (parallel) port is functioning properly, perform the 
following procedures. Figure 2-8 outlines the process. Start with Procedure 1 and continue as 
instructed. 

Procedure 1:  Diagnostic check 

Procedure 2:  Printer port loopback check 

Procedure 3:  Replace system board 

Attach the printer port loopback connector firmly to the printer port and run the Diagnostic 
Program. See Chapter 3 for details. If the printer port test passes, there may be a problem with 
the printer. Go to Procedure 2. If the printer port test fails, go to Procedure 3. 

The printer may be faulty or not connected properly. Perform Check 1. 

Check 1 

Make sure printer cable is firmly plugged into both the printer and the printer port of 
the computer. If the cable is connected correctly, go to Check 2. 

Check 2 

Make sure the printer port is firmly secured to the system board of the computer. If 
the malfunction remains, go to Check 3. 

Check 3 

The printer cable may be damaged. Replace with a good cable. If the malfunction 
remains, go to Check 4.  

Check 4 

The printer may be faulty. Replace it with a good printer or connect it to a different 
computer. 

If the replacement printer works or the original printer does not work on a different 
computer, the printer sho uld be replaced. 

If the replacement printer does not work either, or the original printer functions 
normally on a different computer, go to Procedure 3. 

The system board may be damaged. Replace it with a new one following the instructions in 
Chapter 4.