System Operation
Page 20
MDE-2597L Gilbarco® Security Module (GSM) PA0258XXXXXXX Installation and Service Instructions · January 2010
GSM Diagnostic Codes
LED Pattern
Corrective Action
*
Diagnostic Code 3 - Repeating pattern with LED
lit for five seconds followed by three short blinks
Download network working key from network host.
LED constantly on or LED constantly off
Replace GSM (Fatal diagnostic code).
Very Slow Blinking
Powerfail GSM by disconnecting the AC side of the
power supply and plug back in.
Any other diagnostic/error code pattern
Replace GSM (Fatal diagnostic code).
*
When a diagnostic is displayed, try cycling power to the GSM at the wall outlet before replacing the unit or
taking any other corrective action.
The following are the GSM Diagnostic Codes:
