Maintenance
TDS 420A, TDS 430A & TDS 460A Service Manual
6-5
Table 6- 2: External Inspection Check List
Item Inspect For Repair Action
Cabinet, front panel,
and cover
Cracks, scratches, deformations,
damaged hardware or gaskets.
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.
Replace defective modules.
Clear or wash out dirt.
Carrying handle, bail,
cabinet feet.
Correct operation. Replace defective module.
Accessories Missing items or parts of items,
bent pins, broken or frayed
cables, and damaged connec-
tors.
Replace damaged or missing
items, frayed cables, and defec-
tive modules.
Cleaning Procedure — Exterior. Use the following procedure to clean the exterior
of the oscilloscope.
CAUTION. To prevent getting moisture inside the oscilloscope during external
cleaning, use only enough liquid to dampen the cloth or applicator.
1. Remove loose dust on the outside of the oscilloscope with a lint free cloth.
2. Remove remaining dirt with a lint free cloth dampened in a general purpose
detergent-and-water solution. Do not use abrasive cleaners.
3. Clean the monitor screen with a lint-free cloth dampened with either isopro-
pyl alcohol or, preferably, a gentle, general purpose detergent-and-water
solution.
Inspection — Interior. To access the inside of the oscilloscope for inspection and
cleaning, refer to the Removal and Installation Procedures on page 6--9.
Inspect the internal portions of the oscilloscope for damage and wear using
Table 6--3 as a guide. Defects found should be repaired immediately.
If any electrical module is replaced, check Table 5--1 on page 5--3 to see if it is
necessary to adjust the oscilloscope.
CAUTION. To prevent damage from electrical ar cing, ensure that circuit boards
and components are dry before applying power to the oscilloscope.
To Next Page
Loading...
Need help?
General
