Tektronix TPS2000 Series, Руководство по обслуживанию

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Maintenance
TPS2000 Series Digital Storage Oscilloscopes Service Manual
6--3
Inspection, Exterior. Inspect the outside of the oscilloscope for damage, wear, and
missing parts. Oscilloscopes that appear to have been dropped or otherwise
abused should be checked thoroughly to verify correct operation and perfor-
mance. Immediately repair defects that could cause personal injury or lead to
further damage to the oscilloscope.
Cleaning Procedure, Exterior. To clean the oscilloscope exterior and probes:
1.
Remove loose dust on the outside of the oscilloscope and probes with a
lint-free cloth. Use care to avoid scratching the clear glass display shield.
2.
Use a soft cloth dampened with water to clean the oscilloscope, or use a 75%
isopropyl alcohol solution for more efficient cleaning.
CAUTION.
To prevent getting moisture inside the oscilloscope during external
cleaning, use only enough liquid to dampen the cloth or applicator.
To avoid damage to the surface of the oscilloscope or probes, do not use any
abrasive or chemical cleaning agents.
Inspection, Interior.
Inspect and clean the interior if it appears that the oscillo-
scope may have been damaged or exposed to an unusually dirty environment.
To inspect and clean the interior, disassemble the oscilloscope by completing
each of the disassembly procedures in the order given starting on page 6--5.
Inspect the internal portions of the oscilloscope for damage and wear using
Table 6--1 as a guide. Repair defects immediately.
Table 6--1: Internal inspection check list
Item Inspect for Repair action
Front and
Rear Case Cracks or deformations. Scratched lettering
or display filter. Loose connectors or labels. Repair or replace defective
hardware.
Circuit boards Loose, broken, or corroded solder connec-
tions. Burned circuit boards. Burned,
broken, or cracked circuit-run plating. Remove failed module and
replace with a new module.
Solder
connections Cold solder or rosin joints. Resolder joint and clean with
isopropyl alcohol.
Wiring and
cables Loose plugs or connectors. Burned, broken,
or frayed wiring. Firmly seat connectors. Repair or
replace modules with defective
wires or cables.