Toshiba L600D User Manual

Flatiron carries 3 USB port. To check if the computer’s USB port is malfunctioning or not, 
follow the troubleshooting procedures below as instructed. 

Procedure 1:   Diagnostic Test Program Execution Check 

Procedure 2:   Connect Check and Replacement Check 

Execute USB test in the USB test program. 

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

Right side USB port is connected to system board with CRT Board by CRT cable. This cable 
may be disconnected from system board. Disassemble the computer following the steps 
described in Chapter 4, Replacement Procedures. 

Check 1 

Make sure CRT cable is correctly and firmly inserted. If the problem still occurs, 
perform Check 2. 

 

Check 2 

CRT/B may be faulty. Replace it with a new one. If the problem still occurs, 
perform Check 3. 

Check 3 

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