Maintenance
DPO4000 Series Service Manual 4-3
CAUTION. Avoidthe 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-panelbuttons. 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.
Inspect the outside of the oscilloscopefor damage, wear, and missing parts,
using Table 4--1as a guide. Immediat ely repair defects that could cause personal
injury or leadto further damage to the oscilloscope.
Table4- 1: External inspection check list
Item Inspectfor Repairaction
Cabinet, front panel,
andcover
Cracks,scratches, def ormations,
damaged hardware
Repairor replace defective
module
Front-panelknobs Missing, damaged, or loose
knobs
Repairor replace missing or
defective knobs
Connectors Brokenshell s, cracked insulation,
anddef ormed contacts. Dirt in
connectors
Repairor replace defective
modules. Clear or wash out dirt.
Carryinghandle, and
cabinet feet
Correctoperation Repairor replace defective
module
Accessories Missingitems or parts of items,
bent pins, brokenor frayed
cables, and damaged connectors
Repairor replace damaged or
missing items, frayed cables, and
defective modules
If the displayis very dirty, moisten the wipe with distilled water or a 75%
isopropyl alcohol solution andgently rub the display surface. Avoid using excess
force or you may damage the plastic disp lay surface.
CAUTION. Toprevent getting moisture inside the oscilloscope during external
cleaning, use only enoughliquid to dampen the cloth or applicator.
Exterior Inspection