11.1 General information 154
11.1.1 Required qualification 154
11.1.2 Maintenance schedule 154
11.1.3 Logbook 154
11.1.4 Spare parts 154
11.2 Identifying electrical equipment 155
11.2.1 Device identification 155
11.2.2 Cables and wires 155
11.2.3 Understanding wiring diagrams 155
11.3 Alarm / fault indications 156
11.3.1 Messages 156
11.3.2 Error message levels 156
11.3.3 Fault handling 156
11.3.4 Standard troubleshooting procedure 157
11.4 Removing the CDP control panel 158
11.5 LEDs and switches on circuit boards 159
11.5.1 AMC circuit board 159
11.5.2 IOEC I/O modules 160
11.6 Corrective maintenance 161