Specifications

To test the flexible disk drive voltages
Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and
assemblies.
WARNING
This procedure is to be performed by service-trained personnel aware of the hazards
involved, such as fire and electrical shock.
Equipment Required
Equipment Critical Specification Recommended
Model/Part
Digitizing Oscilloscope > 100 MHz Bandwidth HP 54600B
1 Turn off the instrument, then remove the power cable. Remove the instrument
cover and the disk drive assembly.
2 Reconnect the disk drive cable to the rear of the flexible disk drive. Turn the disk
drive assembly over so that the solder connections of the cable socket on the
flexible drive are accessible.
3 Connect the power cable, then turn on the instrument.
4 Insert the disk that contains the functional performance verification software and
enter the test operating system.
5 In the Sys PV menu select the Flexible Disk test. Insert a disk that has enough
available bytes to run the test in the disk drive, then select Run-Repetitive.
Troubleshooting
To test the flexible disk drive voltages
5–28