System Maintenance Manual

Page 6-14 G1000 / GFC 700 System Maintenance Manual - 200/B200 Series King Air
Revision 7 190-00915-01
5. If planning to reinstall the same unit, it is not necessary to disconnect the ground strap from the
unit ground stud. If replacing with a new unit, disconnect the ground strap from the removed unit
and retain the ground strap and associated hardware for reinstallation on the new unit.
Reinstallation:
1. Reinstallation of the Signal Conditioners is the reverse of the removal.
Note that the p/n 85-292-2 and 85-292-4 units are interchangeable.
Reference the Main Instrument Panel Installation drawing, listed in Table 1-2, for more details.
2. Proceed to Section 7.4.1 for testing.
6.23 Instrument Panel Annunciators (Prop Synch and Standby Battery)
Removal:
1. Remove MFD from the instrument panel as per Section 6.1.
2. Using a M22885/108T8234 extraction tool, disconnect connector from the back of the switch.
3. Pull the pushbutton cap fully out of the switch body and allow the cap to rotate 90° where it is
held by the retaining element.
4. While holding the retaining sleeve (back side of the instrument panel), loosen the two screws
inside the switch body until the switch is free to come out.
5. Remove the mounting sleeve and switch from the instrument panel.
Reinstallation:
1. Reinstallation of the Prop Synch and Standby Battery switches is the reverse of the removal.
Reference the Main Instrument Panel Installation drawing, listed in Table 1-2, for more details.
2. Press and hold the cockpit annunciator “Press To Test” switch located to the left of the
annunciator panel, and verify the following:
• For the Standby Battery Annunciator/Switch: STBY Battery Switch legends illuminates
and reflects “STANDBY BATTERY” in white, “ARM” in green, and “ON” in amber.
• For the Prop Synch Annunciator/Switch: Prop Synch Switch legends illuminates and
reflects “PROP SYNC” in white, and “ON” in green.
3. Release cockpit annunciator “Press To Test” switch.
4. If further maintenance is not required, proceed to Section 8.
6.24 L-3 Avionics (BF Goodrich) PS-835(C or D Model) Emergency Battery
Removal:
1. Gain access to the forward avionics compartment in the nose of the aircraft.
2. Unscrew the knurled hold-down nut to allow it to move free of the unit.
3. Remove the unit from the rack.
Reinstallation:
1. Install the emergency battery in accordance with the Electrical Equipment Install, Nose Bay
drawing (refer to Master Drawing List, listed in Table 1-2, for specific drawing number). Refer
to the King Air 200 Series Maintenance Manual, listed in Table 1-2, for access requirements as
needed.
2. If further maintenance is not required, proceed to Section 8.