The basic troubleshooting process is:
                [1] Run each test in the order given.
                  [2] If the test results differ from those given in the manual, 
                  you have found a problem.
                  [3] Turn the power off.
                  [4] Study the components listed in the "Possible Problem 
                  Area" section of each test instruction.
                  [5] After you have found and corrected a suspected problem, 
                  repeat the failed test.