90-60 C813 Transceiver Installation (Optional; continued)
E. Scheduled Maintenance and Inspections
Refer to Technisonic Industries Limited Installation and Operating Instructions.
F. Special Maintenance and Inspections
1. Turn battery & avionics switches off. Open circuit breaker panel and remove
transceiver per Part C, as required.
2. Inspect condition of and verify no obvious damage to transceiver, avionics tray (if
installed), copper bus bars, circuit breaker, and wiring. Verify no loose, chafed,
or broken wires or terminals. Verify no evidence of arcing. Verify equipment
security.
3. Secure circuit breaker panel and install transceiver per Part D, as required. Perform
ground checks per last two steps of Part D.
90-70 C823-16 Audio Control Installation
A. Removal
1. Refer to Figure 90-1. Turn battery switch off. Pull-out associated circuit breaker.
2. Release four slot-head fasteners securing C823-16 audio control to radio tray, and
remove audio control.
B. Installation
1. Refer to Figure 90-1. Turn battery switch off & pull-out associated circuit breaker.
2. Position C823-16 audio control into appropriate radio tray support and lock four
slot-head fasteners.
3. Push-in associated circuit breaker & turn battery switch on. Perform post-
installation function checks per the appropriate Northern Airborne Technology
(NAT) Installation and Operation Manual (supplied with unit).
C. Schematic
Refer to Figure 90-7 for C823-16 audio control installation wiring schematic.
Page 90.8 Chapter 90 Police Version JUL 2020
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