Page 92.34 Chapter 92 ENG Version JUL 2020
92-191 G457-1 Antenna Installation (Transponder; continued)
E. Special Inspections
1. Refer to Figure 92-1. Turn battery & news equipment switches off. Open circuit
breaker panel.
2. As required, remove CI 105-16 transponder antenna per Part A. Inspect condition
of and verify no obvious damage to antenna, 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. Install antenna per Part A if removed.
92-192 G457-2 Antenna Installation (TV Tuner)
A. Schematic
Refer to Figure 92-13 for G491 TV receiver provision installation electrical schematic.
B. Removal
1. Refer to Figure 92-1. Turn battery & news equipment switches off and pull out
TV TUNER (2 amp) circuit breaker at panel.
2. Using plastic scraper, remove B270-1 sealant from around CI 273 TV tuner
antenna where it attaches to cabin skin.
3. Remove screws securing B322-11 plate to cabin skin and remove plate with
antenna attached. Disconnect antenna cable from antenna at connectors.
4. Disassemble antenna from plate as required.
C. Installation
1. Refer to Figure 92-1. Turn battery & news equipment switches off and pull out
TV TUNER (2 amp) circuit breaker at panel.
2. Remove paint & primer from between cabin skin and B322-11 plate to ensure
electrical ground.
3. Assemble CI 273 TV tuner antenna on B322-11 plate as required. Verify security.
4. Connect antenna cable to antenna at connectors. Install screws securing plate
to cabin skin. Verify security.
5. Apply small bead of B270-1 sealant around antenna (exterior only) where it
attaches to cabin skin.
6. Push in TV TUNER (2 amp) circuit breaker at panel. Turn battery & news equipment
switches on.
7. Perform appropriate functional checks per TV tuner manufacturer’s instructions.
Turn battery & news equipment switches off.
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