Toshiba PRO L645 Manual Do Utilizador

 not, 

dures below as instructed. 

 Execution Check 

ent Check 

 

rs, 

Flatiron carries 3 USB port. To check if the computer’s USB port is malfunctioning or
follow the troubleshooting proce

Procedure 1:   Diagnostic Test Program

Procedure 2:   Connect Check and Replacem

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 occu
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.