Filter
Top Products
WFM 601A, WFM 601E & WFM 601M User Manual
D–1
Appendix D: User Service
This section describes preventive maintenance for the waveform monitor and
how to replace graticule light bulbs. If the waveform monitor does not function
properly, send it to a qualified service personnel or contact Tektronix for service.
Cleaning or Replacing the Fan Filter
To ensure adequate air flow, clean or replace the rear-panel fan filter regularly.
The interval between filter cleaning or replacement is determined by the
operating environment. In a dusty environment, check the filter monthly. The
Accessories kit shipped with your waveform monitor contain several replace-
ment filters.
To clean or replace the filter, follow these steps:
1. Turn off power to the waveform monitor.
2. Carefully pull the fan cover housing off the fan. No screws attach the cover
to the fan.
3. Remove the filter from the fan cover.
4. Wash the filter in a mild detergent solution, rinse thoroughly and dry. Place
the clean, dry filter or a new filter in the fan cover.
5. Replace the cover over the fan.
Fuse Replacement
The line fuse for this instrument is located inside the cabinet, under a protective
shield. Do not attempt to replace this fuse. Contact a qualified service technician
for assistance.