Toshiba PORTEGE R830 Maintenance Manual page 75

Troubleshooting Procedures
NOTE: When checking the connection, be sure to check it with care for the followings.
1. Cable can not be disconnected from the connector.
2. Cable is connected straight to the connector.
3. Cable is connected all the way seated in the connector.
4. Cable or connector can not be broken.
Check 2 Connect USB FDD to other USB port and check if it works properly. If it does not
work properly, perform Check 3
Check 3 USB FDD may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 4
Check 4 Sound/ USB board (and FPU) or eSATA/HDMI/USB board (and FPC) may be
damaged. Replace it with a new one following the instructions in Chapter 4,
Replacement Procedures and check the operation. If the problem still exists,
perform Check 5.
Check 5 System board may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures.
2-34
PORTEGE R830 Satellite R830 Series Maintenance Manual (960-880) [CONFIDENTIAL]