Maintenance; Service Information; Interior Access - Fluke 8050A Instruction Manual

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