“4069RT” Service and Parts ManualMarch 2014
Page 2-4
ELECTRICAL SYSTEM – GENERAL
D
IAGNOSTIC
LED
Figure 2-3: Diagnostic LED
If the machine fails to operate, inspect the GP400
Module located inside the Lower Controls box. The LED
located on the module should be ON. If the LED is OFF
or FLASHING, refer to Section 4: Troubleshooting.
ART_3093
GP400
Module
Diagnostic LED
Lower Controls
Terminal
Block
Module