CKM-CE75-E1M Operations and Maintenance
24-10707-112 Rev. D
5-2
9. If the Earth Ground jumper is enabled, connect a wire from the
ground stud on the enclosure to the DC1+ terminal. The GND FLT
and SYS FLT LEDs should light. Remove the wire and the GND
FLT and SYS FLT LEDs should extinguish. Repeat for the DC1
terminal.
10. When a standby battery set is used, remove AC power from the
CKM-FPO power supply. Verify that the DC1 LED remains lit and
that the AC FLT LED lights. Reconnect AC power and verify that the
AC FLT extinguishes.
M
AINTENANCE PROCEDURES
The following are the maintenance instructions for the CKM-FPO75 power
supply system.
• Disconnect AC power prior to servicing.
• Verify that no fault conditions display on any of the yellow fault LEDs.
• Verify the integrity of all fuses and replace as necessary using the fuse
ratings listed in Specifications on page 2-7.
• The battery set (if used) should be checked and replaced if found to be
defective or if more than 4 years old (or as required by local code).
• Verify that all output voltages are within the range listed in Specifications
on page 2-7.
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