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The mirrored connector note

Fictional RPJ-4 trainer, J1 connector, C1/C2 revision1. Supplied virtual records only. All values are fictional problem data; no equipment operation.

Customer says: Request is on, but the technician recorded zero at J1.2 and suspects the controller.

The old photo was taken from the wire-entry side. The cavity numbering was copied from a mating-face diagram.

Tests you can run

Repair options

The lesson behind this case