Table 5-1, Troubleshooting - Eads Racal Instruments 1264C Manual

PROBLEM
Unit does not Power On
Voltage alarm condition
(RED LED illuminated).
Temperature alarm
condition (RED LED
illuminated).
Fan alarm condition
Maintenance 5-12
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Table 5-1, Troubleshooting

POSSIBLE CAUSES
•
1264C mainframe not
connected to power
source.
•
Blown AC Mains Fuse.
•
Power supply protections
are active causing the
supply to be "shutdown".
•
Faulty AC wiring or bad
front panel AC Power
Switch.
•
Faulty VXI module
installed or voltage fault
occurred.
•
VXI supply is out of
tolerance.
•
Supply intake
temperature limit
exceeded.
or
•
Insufficient module
cooling air.
•
Fan intake is blocked, or
fan filter is clogged.
•
S400 Voltage switch set
to incorrect position.
1264C User Manual
WHAT TO DO
•
Make sure that the 1264C is
connected to a live electrical outlet and
the AC power switch is on. Try
operating another piece of equipment
from this outlet.
•
Unplug AC mains power and check the
fuse. See "Removal and Replacement
of the AC Mains Fuse" in Chapter 5.
•
Refer to "Power Supply Protections" in
Chapter 4.
•
Cycle power to clear fault. If fault
persists remove installed VXI modules
(cycle power) until fault is cleared.
•
Verify integrity of AC wiring to AC
Power switch and the switch itself.
Contact customer service.
•
Cycle power.
•
If fault persists remove installed VXI
modules until fault indication is
cleared.
•
Perform Basic Functional Check
procedure from Chapter 3.
•
Check for restrictions to airflow at
mainframe intake and exhaust.
•
Clean mainframe module cooling fan
filter.
•
Check ambient temperature.
•
Check for restrictions to airflow at
mainframe intake and exhaust.
•
Clean mainframe module cooling fan
filter.
•
Set S400 to position that corresponds
to the input power voltage.
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