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Chapter 5
Service and Repair
Types 4825 and 4826 are designed and constructed to provide many years of safe,
reliable operation. However, if the correct function or operating safety of the instru-
ment is impaired, disconnect it immediately from the mains source and secure it
against unintended operation. For repair contact your local Brüel & Kjær representa-
tive. Under no circumstances should repair be attempted by persons not qualified in
electronic instrumentation service.