Section 4
Maintenance
WARNING
THESE SERVICING INSTRUCTIONS
ARE
FOR
USE
BY
QUALIFIED PERSONNEL ONLY. TO
AVOID ELECTRICAL SHOCK, DO NOT PERFORM
ANY
SERVICING OTHER THAN THAT
CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU
ARE
QUALIFIED TO DO SO.
4-1. INTRODUCTION
4-2.
This section of the manual contains maintenance
information
for
the
8050A.
This
includes
access
procedures, disassembly and replacement procedures,
performance
tests,
calibration
adjustments,
and
troubleshooting procedures. The performance tests are
recommended
as
an acceptance test when the instrument
is
first received. The performance tests can also be used as
part of a routine preventive maintenance schedule.
4-3. A one-year calibration
cycle
is recommended to
maintain specifications given in Section 1
of
this manual.
The test equipment required for the performance tests or
calibration adjustments
is
listed in Table
4-1.
Test
equipment
with
equivalent
specifications
may
be
substituted for the recommended model.
4-4. SERVICE INFORMATION
4-5. The 8050A
is
warranted for a period
of
one year
upon shipment to the original purchaser. Conditions of
the warranty are given
at
the front
of
this manual.
Malfunctions that occur within the limitation of the
warranty
will
be
corrected
at
no
cost to the purchaser.
For
in-warranty repair, call (toll-free) 800-426-0361 for the
address
of
the nearest Fluke Technical Service Center. In
Alaska, Hawaii, Washington, or Canada call 206-356-
5400 (toll-call). Ship the instrument postpaid in the
original container.
If
the original
container
is
not
available, pack the instrument in a sturdy carton with
at
least three inches of non-settling padding on all sides.
Dated proof-of-purchase may be required for
in'-
warranty repairs.
4-6.
Fluke Technical Service Centers are also available
for calibration and/ or repair of instruments that are
beyond the warranty period. Call the number listed above
for shipping instructions. Ship the instrument
and
remittance in accordance with the instructions received.
4-7. GENERAL INFORMATION
4-9. Interior
Access
4-10.
The instrument has two pcb assemblies: the Main
PCB Assembly and the Display PCB assembly. To gain
access
to the calibration adjustments, the backup fuse, or
the ac line transformer, only the case needs to
be
removed.
Some troubleshooting can also be accomplished with
only the case removed. Other troubleshooting procedures
may require the removal of the Display PCB assembly.
CAUTION
To
avoid contaminating the pcb assemblies
with
oil
from
the
fingers,
handle
the
assemblies by the edges or wear gloves. If an
assembly does become contaminated, refer to
the Information on cleaning pcb's given later
In this section.
4-1
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