Tektronix DPO3000 Series, Service Manual

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Maintenance
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 Tektronix Service Center or representative.
Lubrication.
There is no periodic lubrication required for this oscilloscope.
Exterior Inspection
Inspect the outside of the oscilloscope for damage, wear, and missing parts,
using the following table 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 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 deformed
contacts. Dirt in connectors. Repair or replace defective
modules. Clear or wash out
dirt.
Carrying handle, and
cabinet feet Correct operation. Repair or replace defective
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.
Interior Inspection To access the inside of the oscilloscope for inspection and cleaning, refer to the
Removal Procedures in this section.
Inspect the internal portions of the oscilloscope for damage and wear, using the
following table as a guide. Repair any defects immediately.
If any circuit board is repaired or replaced, check the table to see if it is necessary
to adjust the oscilloscope.
MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual 4–3