Service Issues
VendnetUSA 3142 / 3143 / 3085 / MDB 3084
Choose the problem first, then open the focused route for tools, safety notes, locator help, parts status, and checklist steps.
Issue Finder
What Problem Are You Seeing?
Search symptoms, filter by system, then open the matching route.
Controller Board Diagnostic
Determines whether the controller board is receiving proper low-voltage supply and producing expected outputs before considering board replacement.
Power Input Diagnostic
Verifies that line voltage is reaching the machine terminal block and that primary overcurrent protection is intact.
Cooling or refrigeration problem
Use this when the machine is not staying cold or refrigeration components are involved.
Delivery sensor or bin problem
Use this when delivery bin or product-detection sensor clues are present.
Payment or money acceptance problem
Money, validator, coin, bill, or card-reader clues point to this route.
Machine Context
Areas This Machine May Use
Use these areas as orientation only. Open a specific issue before following diagnostic steps.