Russound CP 4.6 Instruction Manual page 24

PR-4Zi and CP4.6 TEST PROCEDURE
The purpose of this Test Procedure is to instruct not only the Russound
Test Department on how to test the product but to instruct any outside
Service Technician that might need to do so as well. There are several
pictures throughout the Test Procedure to help the technician test the
product.
While proceeding through the procedure there will be several steps that
have a bold "Test:". These are special instructions for the "Russound
Test Department" on how to accomplish these connections using the
equipment provided the Test Department.