Service Issues
USI 3120 GF12 II Glass Front
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.
No Power Diagnostic
This diagnostic flow guides the service professional through initial, safe checks to determine the root cause of a completely unresponsive machine.
Vend Motor Will Not Run
This procedure helps diagnose why a specific product selection fails to dispense when the associated motor does not activate.
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.
Display, keypad, or selection problem
Use this when the display, keypad, selections, or user controls are the main clue.
Door, latch, or lock problem
Use this when the door, latch, lock, gasket, or seal is the visible problem.
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.