Lexicon RX-7 User Manual download pdf (Page 25)

Lexicon Troubleshooting & Maintenance

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component is properly grounded and connected to the same

electrical ground as the ZX-7/RX-7.

3. Turn off all components within your system, and then

disconnect the input cable on the amplifier. Turn the amplifier

back on. If the hum disappears the fault may be with the input

cable that is being used. Make sure the cables are properly

shielded or use a cable that has better shielding. Make sure the

cable is not running or laying on top of any AC power cords.

4. Ground loop problems may also be caused by poor grounding

of the electrical system within your home or may be caused by

faulty earth grounds in your home’s electrical system. To isolate

the problem, try unplugging components with three prong

grounded power cords one at a time to see if one or all are

causing the problem.

In the past, cold water pipes and other utilities were often used

for grounds. These items may not be still valid because of

corrosion of the existing pipes and the installation and use of

PVC piping. Please check with a licensed electrician for further

evaluation.

If all else fails. . .

1. Contact an authorized Lexicon dealer.

2. Contact Lexicon Customer Service at 781-280-0300

3. Visit www.lexicon.com for frequently asked questions and

additional troubleshooting information.

Note:

Visit the knowledge base at http://www.lexicon.com/kbase for answers to

frequently asked questions and additional troubleshooting information.

MAINTENANCE

Routine maintenance should be performed on a periodic basis.

Clean the exterior surfaces of the unit with a soft, dry, lint-free cloth.

Do not use alcohol, benzene, acetone-based cleaners, or strong

commercial cleaners. Do not use a cloth made with steel wool or

metal polish. If the unit is exposed to a dusty environment, a

low-pressure blower may be used to remove dust from its exterior.

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Lexicon RX-7 User Manual Page 25