Figure 24. AM-1780 POWER CKT BKR set at ON and AM-1780 POWER lamp lights.
If step 1d checks good, then all of EPC step 1 is good, and EPC step 2 would be checked.
Before doing EPC step 2, connect the known good handset to jack J803 on the commander's C-2298
control box. See Figure 25.