Service manual

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Section VIII: Keyboard Maintenance
Occasionally it will become necessary to clean and adjust the keyboard. The contacts, although
gold plated, may become dirty, contaminated, or corroded. When contacts become poor, noises
and erratic sounds may be generated while playing the instrument.
To service the keyboard, the bottom cover must be removed. This cover is held on with 8 wood
screws. If the keyboard compartment is found to be excessively dirty, it should be blown out
with air first.
Avoid touching the buss bars or the spring contacts with the fingers since hand oils and
perspiration will cause corrosion. Under normal conditions, any dirt can be removed by spraying
the assembly with a light coating of a high grade contact cleaner. At the factory, we use and
recommend Cramolin®. If this is not available, TV tuner spray may be used. Do not under any
circumstances use abrasives or abrasive tools, since this will destroy the gold plating. If spraying
does not cure the problem, try wiping the buss bar with a cotton swab in the area of the problem
key or keys.
Sometimes it is necessary to adjust the spring contacts for more tension. This is done by bending
the spring so that it is closer to the buss bar. It is easiest to bend at the end nearest the mounting
board. In all cases, the "pitch" contact must occur before the "trigger" contact. The pitch buss
bar is nearest the front of the instrument. The trigger buss bar is in the center, and the third buss
bar nearest the rear of the instrument is not used and therefore need not be cleaned or adjusted.
To clean the keys, use a soft cloth moistened with a mild soap solution. Never allow solutions or
spray cleaners to run down between the keys. Avoid harsh solvents, since the keys are made of
plastic and may be dissolved. Scratches may be removed with a plastic or automotive polishing
compound. Waxing the keys is not recommended.