2.5 FDD Troubleshooting 2 Troubleshooting Procedures
Procedure 3 Connector Check and Replacement Check
The USB 3.5-inch FDD is connected to the System Board.
Check 1 When using the USB port, make sure the USB FDD cable is firmly connected to
PJ4600 (USB port 0) or PJ4601 (USB port 1) on the SN board and the SN cable is
firmly connected to PJ9501 on the system board and PJ9511 on the SN board.
If any of the connections are loose, reconnect firmly and repeat Procedure 2.
If any of the connections is damaged, or there is still an error, go to Check 2.
Check 2 The USB FDD or USB FDD cable may be defective or damaged. Replace it with
a new one. If the USB FDD is still not functioning properly, perform Check 3.
Check 3 The SN board or SN cable may be defective or damaged. Replace it with a new
one following the steps in Chapter 4, Replacement Procedures. If the USB FDD
is still not functioning properly, perform Check 4.
Check 4 Replace the System board with a new one following the steps in Chapter 4,
Replacement Procedures.
TECRA M2 Maintenance Manual (960-468) 2-31