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XTC/3 Operating Manual
6.3.1 Troubleshooting XTC/3
Table 6-1 Troubleshooting XTC/3
SYMPTOM CAUSE REMEDY
1. power on LED not
illuminated
a. blown fuse/circuit
breaker tripped
a.have qualified personnel replace
fuse/reset circuit breaker
b. electrical cord unplugged
from wall or back of XTC/3
b. reconnect power cord
c. incorrect line voltage c. have qualified personnel verify
line voltage
2. XTC/3 "locks" up a. cover or back panels not
attached to XTC/3
a. ensure all covers and panels are
in place and securely fastened
b. high electrical noise
environment
b. reroute cables to reduce noise
pickup (1 ft away from high power
conducting lines makes a sizable
reduction in the amount of noise
entering XTC/3), keep all ground
wires short with large surface area
to minimize ground impedance
c. poor grounds or poor
grounding practice
c. verify proper earth ground, use
appropriate ground strap, eliminate
ground loops by establishing the
correct system grounding, verify
proper XTC/3 grounding
3. XTC/3 does not
retain parameters on
power down (loss of
parameters on power
up)
a. faulty static RAM a. SRAM battery has a normal life
expectancy of ten years. If your
XTC/3 has an SRAM problem
contact INFICON
b. power supply problem b. contact INFICON
c. dead battery c. contact INFICON
4. some keys on front
panel function while
others do not
a. faulty keypad or faulty
keypad ribbon cable
a. contact INFICON
5. all keys on the front
panel fail to function
a. XTC/3 is "locked" up a. turn power to OFF or to STBY,
then to ON, see item 2 above