Service Issues
USI USI 3179 Cb300 Sa
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 or dead display
This initial diagnostic sequence helps identify common operational issues using basic, safe checks available to general service personnel.
No power or dead display Review
This advanced diagnostic path is designed for experienced technicians to troubleshoot complex malfunctions requiring deeper system knowledge.
No power or dead display Review
This flow addresses specific operational checks that can be performed to isolate faults related to dispensing or user interface functions.
Controller or electronics problem
Use this when controller, harness, board, or low-voltage electronics evidence is involved.
Cooling or refrigeration problem
Use this when the machine is not staying cold or refrigeration components are involved.
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.
Product not dispensing
Use this when the product path, tray, spiral, vend motor, or delivery path is suspect.
Machine Context
Areas This Machine May Use
Use these areas as orientation only. Open a specific issue before following diagnostic steps.