Owner's Manual Preamplifier N 320S

5-5
Nº 320S Troubleshooting & Maintenance
Care & Maintenance
The Nº 320S requires routine care and maintenance to ensure
optimal performance. The bulleted items below indicate
maintenance procedures that should be performed on a regular
basis.
Note
Failure to perform the maintenance procedures included in
this section may void the manufacturer’s warranty and/or
standard repair policies.
• Use a feather duster or a low-pressure blower to remove dust
from the Nº 320S exterior surface.
• Use a soft, lint-free cloth to remove dirt and fingerprints from
the Nº 320S exterior surface. Do not use a cloth made with
steel wool or metal polish. If needed, this cloth can be
dampened with isopropyl alcohol. Do not dampen the cloth
with Benzene, acetone-based cleaners, and other commercial
cleaners. Wipe the Nº 320S exterior surface in the same
direction as the grain of the brushed aluminum.
CAUTION
DO NOT APPLY LIQUID DIRECTLY TO THE Nº 320S
EXTERIOR SURFACE. DOING SO MAY DAMAGE
ELECTRICAL COMPONENTS.
• Replace the remote control batteries as needed. Refer to
Remote Control Batteries (1-6) for additional information.
• Refer to Installation Considerations (page 1-4) for information
about preventative maintenance.
(continued)