336 Keysight N9010A EXA Service Guide
CPU/Disk Drive Troubleshooting
A5 Disk Drive
A5 Disk Drive
There are two different types of A5 Disk Drives available. Early analyzers used a
typical hard disk drive, while more recent analyzers use a SSD drive which is a
solid state (FLASH) drive. There are also different drive capacities and interface
types that have been, and are being used, and due to continual changes being
made by the drive manufacturers these will continue to change from time to
time.
The A5 Disk Drive is physically connected to the CPU assembly. Failures of this
disk drive can be either hardware or software related. The first step in trouble
shooting is to determine if the failure is software related. If software is found
not to be the issue, the disk drive should be replaced.
Refer also to Service Note N9010A-03 for compatibility of removable disk
drives and CPUs.
Before replacing the A5 disk drive it is highly recommended that the factory calibration data be
backed up to an external drive and the SD memory card (if available) if at all possible. If this
data is not backed up prior to replacing the disk drive all instrument adjustments and
performance verification tests will need to be run after the drive is replaced.
For information on how to backup this data see the “Calibration Data Backup and
Restore” section in Chapter 16 of this manual.
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