Lexicon 284 - Manual (Page 21)

Signature 284 User Guide
17
Precautions and Maintenance
General Maintenance
The Signature 284 requires no maintenance. It is, however, good electrical
practice to clean all connectors once a year. An occasional dusting of the exterior
surface with a soft cloth helps maintain the unit's finish. Do not use any abrasive
chemicals or cleaners as these will damage the surface.
Most tube amp problems are in the tubes themselves. A simple swapping of
tubes can save a great deal of time, trouble and frustration. Although tube
replacement is a simple procedure, it should be performed by experienced
technicians.
The Signature 284 contains no user-serviceable parts.
Refer all service to qualified technical personnel.
• Do not expose amplifier to moisture, rain, water, direct
sunlight or extreme temperatures.
• Connect amplifier only to an AC power supply that meets the
specifications listed on the rear of the unit.
• Always ensure that the amplifier is properly grounded.
• Make sure that the amplifier has adequate air circulation
near the rear vents.
• To avoid damage to speakers and other playback equip-
ment, turn off the power to all equipment before making
connections.
• Do not use excessive force in handling controls.
• Remove the power plug from the AC mains if the amplifier
is to be stored for an extended period of time.
• Disconnect the AC Power Cord before removing the cover
for service.
• Avoid direct contact with heated tubes.
Precautions