A321
Maintenance Airframe; Maintenance Powerplant
Fatigue; Troubleshooting; Workload; Training / Qualification
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Maintenance
General Maintenance Action
Environment - Non Weather Related; Equipment / Tooling; Human Factors; Procedure; Aircraft
I changed the sensor per fault code #27-XXXXX; F Prox Sensor; FIM 27-XX-XX-XXX-XXX. No help noted; OP/CK failed; made logbook entry and turned the job over. It was due to AMM picture and not enough lighting; hard location; limited material and during the work; they moved the airplane one place to another place. I will be very careful to follow the AMM R and R (Remove and Replace); will take picture before removal. Also will check if the parts can be installed backwards.
Technician reported installing a proximity sensor backwards and not passing the information down to the oncoming shift correctly.