10
MESSAGE (cont.)
RECOMMENDED REPAIR* (cont.)
Battery low (optional
battery)
IF battery/Charger pack not installed change
Configuration to: Remote Battery : None
If battery is installed verify that the charge is set up for
"auto" and allow to charge for 1 hr.
Verify Connections to remote battery/Charger pack.
Replace Remote battery pack.
PWR down and re-init
Turn unit off and then back on again.
Verify connection between CPU Board and BPS receiver
board.
Replace GPS receiver (see Section 3.2.5)
Replace CPU board (see Section 3.2.4)
No course input (300
only)
Verify connection to OBS
Replace CPU board (see Section 3.2.4)
COM failed
Verify connection between CPU Board and Comm
Receiver Board
Replaced comm chassis sub-assembly (see Section 3.2.2)
Replace CPU Board (see Section 3.2.4)
Stuck mic/TX disabled
Verify that mic key input to unit is not grounded
Verify connection between CPU Board and Comm
Receiver Board
Replace comm chassis sub-assembly (see Section 3.2.2)
Replace CPU board (see Section 3.2.4)
Remote ENT key stuck
Verify that remote enter input to unit is not grounded
Verify connection between CPU Board and Comm
Receiver Board
Replace comm chassis sub-assembly (see Section 3.2.2)
Replace CPU Board. (see Section 3.2.4)
Remote XFR key stuck
Verify that remote transfer input to unit is not
grounded
Verify connection between CPU Board and Comm
Receiver Board
Replace comm chassis sub-assembly (see Section 3.2.2)
Replace CPU Board (see Section 3.2.4)
Rcvr needs service
Verify connection between CPU Board and GPS receiver
board.
Replace GPS receiver board (see Section 3.2.5)
Replace CPU Board (see Section 3.2.4)
Battery rqrs service
(optional battery)
If battery/charger pack not installed, change
configuration to remote battery: none
Verify connections to remote battery/charger pack
Replace remote battery pack
* Where multiple repair actions are listed, they are listed with most likely failure cause first.
