Advanced Instruments 4C3 User Manual

79
Troubleshooting Table
Appendix A
Abrupt loss
of power
(no display)
1. Power availability.
Temporarily unplug
the power cord from
its wall outlet adn
replace it with a known
workable lamp or small
appliance.
2. Power connection.
3. Unplug the power cord
from the power cord
socket. Use a small
screwdriver to pry out
the voltage selector/fuse
holder. Visually check
the two 5 mm x 20 mm
time delay (T) fuses
mounted on it. Use
a continuity checker,
or replacement fuse
to check continuity if
there is any doubt.
Check the values
marked on the fuses.
For 100-130V oper-
ation they should be
2-Amp fuses; for 200-
240V operation they
should be 1-Amp fuses.
Symptom
Check
Suggested Action
a. Have the power
restored.
b. Make sure the
power cord is firmly
plugged into both the
wall outlet and the
socket on the back of
the instrument.
c. Replace the fuses if
blown or if incorrect
value.
Re-install the fuse
holder into the back
of the instrument with
the correct arrow-
heads matching.
If the fuses were
blown and the
replacement fuses
blow also, see
Chapter 5, Section C
for further assistance.

Advanced Instruments 4C3 Specifications

General

Brand	Advanced Instruments
Model	4C3
Category	Measuring Instruments
Language	English