2.5 USB FDD Troubleshooting 2 Troubleshooting Procedures
TECRA M3 Maintenance Manual (960-507) 2-31
Procedure 3 Connector Check and Replacement Check
The USB FDD is connected to the System Board.
Check 1 When using the USB port, make sure the USB FDD cable is firmly connected to
CN4600 (USB port 0) or CN4601 (USB port 3) on the SN board and the SN cable
is firmly connected to CN9501 on the system board and CN9511 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.
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