Garmin APOLLO GX SERIES, Service Manual

Page: 120 / 166

Garmin AT Rev --
8-24 GX Service Manual © 2004 Garmin AT
Comm Board Software Upgrade
This procedure describes the loading of a newer version of software for the Comm board. It involves
replacing the software EEPROM on the Comm board.
Parts Required
•
138-0312-012 PROGRAMMED MICROCONTROLLER, VHF Comm
•
INTEGRATED CIRCUIT PULLER TOOL
Procedure
1. Before starting this procedure, fill out a Service Data Sheet if this has not already been done. A
copy is located at the back of this manual
2. Power the unit off.
3. Remove the chassis cover (see Chassis Cover Replacement procedure).
4. Locate the socketed integrated circuit near the front of the Comm board. No number shows
designating which chip this is. It is the only socketed integrated circuit on the Comm board.
5. Using the chip puller, carefully remove the integrated circuit from the socket.
6. Insert the new integrated circuit with the arrow on the top of the chip lined up with the arrow inside
the bottom of the socket. Press it gently, but firmly, in place.
7. Cycle power and let the unit go through its self-test and startup procedure.
8. Using the Service Data Sheet, reenter the customer configuration.