31. Maintenance and Troubleshooting
31-2
31.2 How to Replace the Fuse
The 5A fuse located at the back of the processor unit protects the system from overcurrent and internal fault. If the
power cannot be turned on, check if the fuse has blown. If it has blown, find out the cause before replacing the fuse.
If it blows again after replacement, contact your dealer for advice.
Name Type Code No.
Fuse (5A) FGB0-A 5A AC125V 000-549-064
WARNING
Use the proper fuse.
Use of a wrong fuse can damage the
equipment or cause fire.
Fuse (5A)
31.3 How to Replace the Battery
The CPU Board (PCI-951-5S-RS-R40 or OP0100) in the processor unit contains a lithium battery that preserves
data when the power is turned off. When the voltage of the battery is low the time is wrong, all default settings are
restored, etc. When this occurs, have the battery replaced by a qualified technician, at your earliest convenience.
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