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Page iv 500 SERIES INSTALLATION MANUAL
Rev G P/N 190-00181-02
500 SERIES HARDWARE MOD LEVEL HISTORY
The following table identifies hardware modification (Mod) Levels for the GPS 500 and GNS 530.
Mod Levels are listed with the associated service bulletin number, service bulletin date, and the purpose of
the modification. The table is current at the time of publication of this manual (see date on front cover) and
is subject to change without notice. Authorized Garmin Sales and Service Centers are encouraged to
access the most up-to-date bulletin and advisory information on the Garmin Dealer Resource web site at
www.garmin.com using their Garmin-provided user name and password.
MOD
LEVEL
SERVICE
BULLETIN
NUMBER
SERVICE
BULLETIN
DATE
PURPOSE OF MODIFICATION
1 0019 11/7/00
Replace fuse in COM circuit with a resistor
2 0101 2/16/01
Remote COM transfer
3 0111 7/9/01
Improves VLOC Morse code ident
4 0203, Rev B 8/12/02
Improve receiver audio compressor
performance
5 0207 4/2/02
Remove excess solder from COM board
6 0211 6/4/02
Reduce input transients from Audio Panel