2-16 420 Series
Procedure 3 Connector Check and Replacement Check
The 3.5-inch Floppy Disk Drive is connected to the FDD port by the FDD cable. This cable
may be damaged or disconnected from the external 3.5-inch FDD port. Do the following
checks:
Check 1 Make sure the FDD cable is firmly connected to the FDD port.
FDD PJ5 420 system
If this cable is disconnected, connect it to the system unit and repeat Procedure 2.
If the FDD is still not functioning properly, perform Check 2.
Check 2 The cable may be defective or damaged. Replace the cable. If the FDD is still not
functioning properly, perform Check 3.
Check 3 The FDD or its cable may be defective or damaged. Replace the FDD with a new
one following the steps in Chapter 4, Replacement Procedures. If the 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, Re-
placement Procedures.
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