Toshiba satellite a200 Manuales De Servicio

Satellite A200/A205/Pro A200 Series Maintenance Manual            

[CONFIDENTIAL]

         

20

To determine if the computer’s external USB devices are functioning properly, perform the 
following procedures. Figure 2-6 outlines the process. Start with Procedure 1 and continue as 
instructed. 

Procedure 1:  External device and connection check 

Procedure 2:  Replace system board 

The USB device may be damaged or the connection may be faulty. Perform Check 1. 

Check 1 

Make sure USB device cable is firmly plugged into one of the USB sockets. If the 
cable is connected correctly, go to Check 2. 

Check 2 

Plug the USB device into another USB socket (there are three in all). If the USB 
device still does not work, go to Check 4. 

If the device functions correctly when connected to another USB port, go to 
Check 3. 

Check 3 

Make sure that the USB socket is firmly secured to the system board of the 
computer. If the malfunction remains, the system board may be damaged. Go to 
Procedure 2. 

Check 4 

Connect an alternative USB device to one of the computer’s USB ports, and then 
boot the computer. The computer automatically detects the external device. 

If the alternative USB device works correctly, the original device may be 
damaged and should be replaced. 

If the alternative USB device appears to have the same problem as the original 
device, the system board may be damaged. Go to Procedure 2. 

If the error persists, the system board may be damaged. Replace it with a new one following 
the instructions in Chapter 4.