Tektronix 070-9778-03, Service Manual

Page: 55 / 119

Maintenance
TLA 711 Color Benchtop Controller Service Manual
6–3
Cleaning procedures consist of exterior and interior cleaning. Periodic cleaning
reduces instrument breakdown and increases reliability. Clean the benchtop
controller as needed, based on your operating environment.
Inspect the outside of the benchtop controller for damage, wear, and missing
parts. Use Table 6–1 as a guide. Modules that appear to have been dropped or
otherwise abused should be checked thoroughly to verify correct operation and
performance. Immediately repair defects that could cause personal injury or lead
to further damage to the benchtop controller or the benchtop chassis that the
module plugs into.
Table 6–1: External inspection check list
Item Inspect for Repair action
Front panel and side
cover Cracks, scratches, deformations,
missing or damaged retainer
screws, or ejector handles. Replace defective or missing
parts.
Front panel connectors Broken shells, cracked insulation,
and deformed contacts. Dirt in
connectors. Replace defective parts. Clear dirt
out of connectors.
Rear connectors Cracked or broken shells, dam-
aged or missing contacts. Dirt in
connectors. Replace defective parts. Clear dirt
out of connectors.
Accessories Missing items or parts of items,
bent pins, broken or frayed
cables, and damaged connectors. Replace damaged or missing
parts, frayed cables.
CAUTION.
To prevent damage to electrical components from moisture during
external cleaning, use only enough liquid to dampen the cloth or applicator.
Clean the exterior surfaces with a soft dry lint-free cloth, or a soft-bristle brush.
If any dirt remains, use a soft cloth or swab dipped in a 75% isopropyl alcohol
solution. Use a swab to clean narrow spaces around controls and connectors. Do
not use abrasive cleaning compounds on any part of the benchtop controller.
Exterior Inspection
Exterior Cleaning
Procedure