March 2008 "3072RT / 3772RT / 3772RT HD" Service & Parts Manual - ANSI Specifications
Page 3-18
Outrigger Module GP106 LED Flash Codes
The GP106 has a built-in LED to provide simple diagnostics when no EZ-Cal is available. Please
note that the use of an EZ-Cal provides significantly better diagnostics through the HELP mes-
sages listed previously.
LED on steady
This indicates power to, and no fault with, the GP106
LED off always
This indicates no power to the GP106
LED flash code 1
Wiring Fault. Check connection to P2-2.
LED flash code 2
This indicates a fault with the switch inputs to the GP106. Check wiring to connector P2.
LED flash code 3
This indicates a fault with the “stable” output of the GP106 – a short to the supply has been
detected. Check wiring from pin P2-8
LED flash code 4
This indicates that the outriggers cannot be operated because the machine is on a slope
greater than ten (10) degrees. Move machine to a different location.
LED flash code 5
This indicates a fault with the “stable” output of the GP106 – a short to 0V (ground) has been
detected. Check wiring from pin P2-8
LED flash code 6
This indicates a fault with the “auto” inputs of the GP106 – check the wiring to pins P2-5 &
P2-6
LED flash code 7
This indicates a fault with the supply to the GP106 – check battery supply at least 8V on pins
P2-12 & P4-9
LED flash code 8
This indicates that the machine is not level. It is not a fault and will not affect operation of
outriggers.
LED flash code 9
This indicates that the GP106 is performing startup tests.
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