Tektronix RSA3300A, Service Manual

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Maintenance
6- 6
RSA3303A & RSA3308A Service Manual
Inspection — Interior. To access the inside of the analyzer for inspection and
cleaning, refer to the Removal and Installation Procedures in this section.
Inspect the internal portions of the analyzer for damage and wear, using
Table 6--3 as a guide. Defects found should be repaired immediately.
CAUTION. To prevent damage from electrical arcing, ensure that circuit boards
and components are dry before applying power to the analyzer.
Table 6- 3: Internal inspection check list
Item Inspect for Repair action
Circuit boards Loose, broken, or corroded
solder connections. Burned
circuit boards. Burned, broken, or
cracked circuit-run plating.
Remove failed module and
replace with a new module.
Wiring and cables Loose plugs or connectors.
Burned, broken, or frayed wiring.
Firmly seat connectors. Repair or
replace the modules that have
defective wires or cables.
Chassis Dents, deformations, and dam-
aged hardware.
Straighten, repair, or replace
defective hardware.
Cleaning Procedure — Interior.
To clean the analyzer interior, do the following
steps:
1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi).
2.
Remove any remaining dust with a lint-free cloth dampened in isopropyl
alcohol (75% solution) and rinse with warm deionized water. (A cotton-
tipped applicator is useful for cleaning in narrow spaces and on circuit
boards.)
STOP . For further cleaning, contact your local Tektronix service center.