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M-0329B Instruction Book
7.1
Maintenance
Due to the extremely sophisticated nature of the
circuitry in the M-0329B, field repair is not
recommended. All units are fully calibrated at the
factory prior to shipment; there is not need to re-
calibrate a unit prior to initial installation. Calibration
is only required after a component is replaced. In
the event that a unit does not operate properly, it
should be established that the problem is caused
by malfunction of a Beckwith unit and not caused
by an external fault or wiring error. Once this is
assured, the entire unit should be returned to
Beckwith Electric. Pack the unit carefully (in the
original carton if possible), assuring that there is
adequate packing material to protect the contents.
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NOTE:
Any equipment returned for repair must
be sent with transportation charges
prepaid. The equipment must remain
the property of the user. The warranty is
void if the value of the unit is invoiced to
Beckwith Electric at the time of return or
if the unit is returned with transportation
charges collect.
If under warranty, units will be repaired rapidly and
returned at no cost and with return transportation
paid if the fault is found to be due to workmanship
or failure of material. If a unit is under warranty and
express shipment for return of the repaired unit is
requested, shipping charges will be billed at the
current rate. If the fault is due to abuse or misuse,
or if the unit is out of warranty, a modest charge will
be made. Repair can normally be expected to take
two weeks, plus shipping time. If faster service is
required, it should be requested at the time of
return.
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NOTE:
Units returned with only a blown fuse
are not covered by warranty and a
nominal repair charge will be made for
replacement of the fuse. Please check
the fuses before returning the M-0329B
for repair in order to avoid unnecessary
repair charges.
To help in analyzing the problem, a complete
description of the malfunction and conditions
leading to the failure should be included with the
unit.
However, if you choose to repair the unit, it is
necessary to be completely familiar with the circuitry
involved, and have an adequate understanding of
field effect devices. Be sure to carefully read the
WARNING
page at the beginning of this manual.
It is suggested that first a visual inspection be
made for any component that does not appear
normal or appears to have overheated. Analysis of
the circuit will then often lead to the cause of the
failure and components that need to be replaced.
If no obvious problems exist, it is suggested that
the
TEST
and
CALIBRATION PROCEDURES
be
followed until a portion of a circuit is detected
which does not perform as expected or until a
calibration point is found which will not meet
requirements. These procedures should lead to a
determination of the defective component.
