Bird Technologies 8890-400 Series - Manuale (Pagina 39)

Troubleshooting
Table 1 contains troubleshooting information for problems
which can occur during normal operation. Locate the prob-
lem, review the possible cause, and perform the corrective
action.
Only those functions within the scope of normal mainte-
nance are listed. This manual cannot list all malfunctions
that may occur, or corrective actions. If a malfunction is not
listed or is not corrected by listed corrective actions, notify a
qualified service center.
29
Maintenance
Problem Possible Cause Corrective Action
No meter indication. No RF power. Check RF source.
Arrow on plug-in element pointed in
the wrong direction. Re-position element.
No pick-up from dc contact finger. Adjust, refer to Contact
Adjustment paragraph.
Open or short circuit in dc meter
cable. Replace defective ca-
ble.
Meter burned out or damaged. Return wattmeter and
elements to the factory
for meter replacement
and recalibration.
Intermittent or inconsis-
tent meter readings. Faulty transmission line Inspect line.
Faulty load. Check load.
Dirty dc contact on elements Clean contacts, refer to
the cleaning paragraph.
Sticky or defective meter. Return meter and ele-
ments to the factory for
meter replacement and
recalibration.
Excessive reflected
power (as indicated by
wattmeter). Resistor element damaged. Test resistor for resis-
tance value.
Insufficient dielectric fluid. Check coolant level and
add coolant if neces-
sary.
Leaking dielectric fluid. Worn or defective O-Ring seal. Replace O-Ring.
Loose clamping band. Tighten clamping band.
Table 1
Troubleshooting