9910 - Gently wiggle signal cable Gently wiggle signal cable Yes Go to 9993 - 9851 - Replace affected signal cable - Decision, Notes: 9852 No Go to 9992 - 9990 - Measure PMFX Box input high voltage - Decision, Notes: 9991 Note 9911 - Gently wiggle the affected channel’s signal cable above the connector where... 9994 - Gently wiggle the affected channel’s signal cable above the connector where... 9913 - Did the displayed count rate change?