Maintenance - Signal Audio Workshop CH2-M Owner's Manual

Maintenance:

Cleaning:
Do not clean the unit with water or with water soaked cloth.
Cleaning is best made with dry dusting brush and vacuum cleaner.
Dust and moisture are the primer enemy of switches and contacts
within this unit. Avoiding them as much as you can will prolong the
unit's life significantly.
Maintenance:
There are no user's serviceable parts inside the unit.
Opening and servicing this unit by someone who is not authorized by
Signal AWS is strictly prohibited.
Technical service is made only by those who are authorized from
Signal AWS.
We recommend replacement of vacuum tubes only when
The unit has proven to not function correctly and according to
the type of problem discovered.
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