Bird Technologies 4391A - Manual (Page 33)

21
Troubleshooting
General
The troubleshooting instructions are intended to aid in fault isolation. This is
accomplished through the use of a troubleshooting table.
First, locate the symptom(s) in the problem column of Table 7. In some cases the
same fault can have more than one symptom and more than one possible rem-
edy. Compare the possible causes until you arrive at a suspected fault. Once a
fault has been isolated, repair or replace the defective components.
Note: Always recalibrate the RF Power Analyst after repairing the fault.
Table 7 Trouble-shooting
PROBLEM POSSIBLE CAUSE REMEDY
Inaccurate
power
readings RF Power Analyst
uncalibrated Recalibrate.
Defective Plug-in
Elements Replace defective
elements.
Intermittent connection
at the element wiper Adjust the element
wiper contact.
Loose hold down catch Readjust catch to
hold element
securely in place.
Worn line section Replace line
section.
Defect on Data
Acquisition PC board
assembly Replace the PC
board assembly
(attached to line
section).
High
standing
waves Dirty Connectors Clean the
connectors.
Worn or damaged
connectors Replace the
connectors
Foreign objects in line
section Remove object from
the line section.
Short battery
life 115/230V switch in
wrong position Set 115/230V switch
to correct position.
Damaged/worn
batteries Replace the
batteries.
Will not
operate from
AC line 115/230V switch in
wrong position Set 115/230V switch
to correct position.
Blown fuse Replace blown fuse.
Defective line cord Repair or replace.