Troubleshooting IDM - Communication Failure Event on Module

• Communication Failure Event on Module

• Product Family: Billboard
• Products: AF-2014, DB-1000, DB-2000, DB-3000, DB-4000, DB-4100, DB-4200, DB-5000, DB-6000, DB-6400, DXB-0100, BLD-0100
• Component: PL5x module, power supply, ribbon cable
• Control System: IDM

•  This issue cannot be addressed remotely.

DB-1000 - DB-3000

1. Is module(s) blank?
   • If yes, proceed to Step 2.
   • If no, skip ahead to Step 8.
2. If receiving proper voltage, skip ahead to Step 8.
   • If not receiving proper voltage, proceed to Step 3.
   • If receiving power, replace power supply output fuse as per Module Blank No Power, Bad Fuse, DD1977765.
3. If not receiving power, proceed to Step 4.
   • If receiving proper voltage, replace power supply as per Module section or entire display blank, failed power supply, DD1974242.
   • If voltage is incorrect, proceed to Step 5.
4. If voltage is correct, you will need to ensure continuity of wiring between breaker and power supply. Contact Daktronics or your service provider for assistance.
   • If voltage is incorrect or absent, proceed to Step 6.
   • If voltage is correct, you will need to ensure continuity of wiring between power entrance and breaker. Contact Daktronics or your service provider for assistance.
5. If voltage is incorrect or absent, proceed to Step 7.
   • If voltage is correct, you will need to ensure continuity of wiring between power entrance on sign and main power entrance to display. Contact Daktronics or your service provider for assistance.
   • If voltage is incorrect or absent, issue is likely with incoming electrical service. Contact your power company/utilities provider.
6. If issue follows, resolve as per Row of blank modules, bad module output, DD1988623.
   • If issue does not follow, proceed to Step 9.
   • If issue follows, replace the module as the issue is within the module. Refer to Blank module(s), communication failure event in IDM, issue follows module, DD2031383 for blank module. For modules with no visual issues, refer to Communication failure module in IDM with no visual issues, DD2588679.
7. If issue does not follow, proceed to Step 10.
   • If issue follows, replace the module as issue is within the module. Refer to Row of blank modules, bad module output, DD1988623.
   • If issue does not follow, contact Daktronics or your service provider for further assistance.

DB-4100

1. Is module(s) blank?
   • If blank, proceed to Step 2.
   • If not blank, power cycle module as per Communication failure module in IDM with no visual issues, DD2588679. If issue persists, skip ahead to Step 6.
2. Verify correct voltage is being received at the power supply for the module. (Typically 120 VAC +/- 5%)
   • If voltage is correct, skip ahead to Step 6.
   • If voltage is incorrect, proceed to Step 3.
3. Test voltage at the breaker that supplies power to the affected area/module.
   • If voltage is correct, you will need to ensure continuity of wiring between breaker and power supply. Contact Daktronics or your service provider for assistance.
   • If voltage is incorrect or absent, proceed to Step 4.
4. Test voltage at the power entrance on the sign.
   • If voltage is correct, you will need to ensure continuity of wiring between power entrance and breaker. Contact Daktronics or your service provider for assistance.
   • If voltage is incorrect or absent, proceed to Step 5.
5. Test voltage at main power entrance to display.
   • If voltage is correct, you will need to ensure continuity of wiring between power entrance on sign and main power entrance to display. Contact Daktronics or your service provider for assistance
   • If voltage is incorrect or absent, issue is likely with incoming electrical service. Contact your power company/utilities provider.
6. Is the green indicator light lit on the power supply?
   • If lit, proceed to Step 7.
   • If not lit, replace power supply as per DB-4100, GP3, module blank, power supply failure, DD2356279.
7. Complete a self-test on the module, note error on toe tag and return for repair. Refer to How to perform a self test on a PL5x series module, DD2045934 for instruction.

 DB-4200, DB-5000, DB-6000, DB-6400

1. Is module(s) blank?
   • If blank, proceed to Step 2.
   • If not blank, power cycle module as per Communication failure module in IDM with no visual issues, DD2588679. If issue persists, skip ahead to Step 6.
2. Verify correct voltage is being received at the power supply for the module. (Typically 120 VAC +/- 5%)
   • If voltage is correct, skip ahead to Step 6.
   • If voltage is incorrect, proceed to Step 3.
3. Test voltage at the breaker that supplies power to the affected area/module.
   • If voltage is correct, you will need to ensure continuity of wiring between breaker and power supply. Contact Daktronics or your service provider for assistance.
   • If voltage is incorrect or absent, proceed to Step 4.
4. Test voltage at the power entrance on the sign.
   • If voltage is correct, you will need to ensure continuity of wiring between power entrance and breaker. Contact Daktronics or your service provider for assistance.
   • If voltage is incorrect or absent, proceed to Step 5.
5. Test voltage at main power entrance to display.
   • If voltage is correct, you will need to ensure continuity of wiring between power entrance on sign and main power entrance to display. Contact Daktronics or your service provider for assistance.
   • If voltage is incorrect or absent, issue is likely with incoming electrical service. Contact your power company/utilities provider.
6. Is the green indicator light lit on the power supply?
   • If lit, proceed to Step 7.
   • If not lit, replace power supply as per Two modules next to each other blank, Failed power supply, DD2677767.
7. Complete a self-test on the module, note error on toe tag and return for repair. Refer to How to perform a self test on a PL5x series module, DD2045934 for instruction.