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Maintenance
DPO4000 Series Service M anual
4-3
CAUTION. Avoid the use of chemical cleaning agents, which might damage the
plastics used in this oscilloscope. Use only deionized water when cleaning the
menu buttons or front-panel buttons. Use a 75% isopropyl alcohol solution as a
cleaner and rinse with deionized water. Before using any other type of cleaner,
consult your Tektr onix Service Center or r epresentative.
Lubrication. There is no periodic lubrication required for this oscilloscope.
Inspect the outside of the oscilloscope for damage, wear, and missing parts,
using Table 4--1 as a guide. Immediately repair defects that could cause personal
injury or lead to further damage to the oscilloscope.
Table 4- 1: External inspection check list
Item Inspect for Repair action
Cabinet, front panel,
and cover
Cracks, scratches, deformations,
damaged hardware
Repair or replace defective
module
Front-panel knobs Missing, damaged, or loose
knobs
Repair or replace missing or
defective knobs
Connectors Broken shells, cracked insulation,
and def ormed contacts. Dirt in
connectors
Repair or replace defective
modules. Cl ear or wash out dirt.
Carrying handle, and
cabinet feet
Correct operation Repair or replace defect ive
module
Accessories Missing items or parts of items,
bent pins, broken or frayed
cables, and damaged connectors
Repair or replace damaged or
missing items, frayed cables, and
defective modules
If the display is very dirty, moisten the wipe with distilled water or a 75%
isopropyl alcohol solution and gently rub the display surface. Avoid using excess
force or you may damage the plastic display surface.
CAUTION. To prevent getting moisture inside the oscilloscope during external
cleaning, use only enough liquid to dampen the cloth or applicator.
Exterior Inspection