Lesson 1Electronic control and payout logic: hopper drivers, fuses, coin counters and PCB rolesExplains how slot electronics direct and oversee hopper payouts. Covers driver circuits, fuses, relays, coin counters, and PCB logic, including activation lines, payout signals, fault detection, and links to main game CPU.
Hopper driver outputs and activation signalsFuse safeguards and overcurrent responsesCoin counter inputs and signal shapingMain logic PCB payout control processTimeouts, error indicators, and lock statesLesson 2Post-repair verification: payout simulation tests, multi-denomination payout runs, audit of meter and event logsGuides verification of hopper fixes before service resumption. Encompasses payout simulations, varied denomination tests, timing reviews, and meter/event log audits to ensure accurate accounting and alerts.
Single-denomination payout simulationsMixed multi-denomination payout trialsVerifying coin counts against logged signalsExamining meters, audits, and event recordsDocumenting test outcomes and approvalsLesson 3Inspection and mechanical test plan: clearing jams, checking coin path alignment, wear inspection, bearing and motor checksEstablishes a systematic mechanical test plan for hoppers. Includes safe disassembly, jam removal, coin path alignment, wear checks, and load testing of bearings, shafts, and motors to avoid field repeats.
Safe hopper removal and bench preparationSteps for resolving coin jamsVerifying coin path and chute alignmentChecking gates, discs, and agitators for wearBearing, shaft, and motor spin testsLesson 4Causes of false "Hopper Empty/Jam" indications: wiring, sensor occlusion, stuck actuators, insufficient hopper voltageInvestigates false hopper empty or jam alerts. Addresses wiring issues, sensor blockages, jammed actuators, low voltage, and loose connectors, with focused tests to identify and fix each mode.
Identifying false empty and jam signsLocating damaged or shorted sensor wiringSpotting dirty or blocked sensor opticsDetecting jammed levers and actuatorsLow-voltage and power dip alertsLesson 5Sensor types for coin detection and hopper level: optical interrupters, IR, micro-switches, weight/floor sensorsReviews sensors for coin and level detection. Covers optical interrupters, IR reflective types, microswitch actuators, and weight/floor sensors, including installation, alignment, failures, and cleaning.
Optical interrupter principles and alignmentIR reflective coin sensing methodsMicroswitch actuators and lever tweaksWeight and floor sensor level detectionCleaning and safeguarding sensor windowsLesson 6Calibration and configuration: hopper pulse counts, coin denomination mapping, coin size adjustments and software parameter updatesDetails hopper calibration and setup. Involves setting pulses per coin, denomination mapping, size adjustments, and software updates while complying with rules.
Setting hopper pulses per dispensed coinMapping denominations to hopper outputsAdjusting for coin diameter and thicknessUpdating game software payout settingsLogging calibration data for auditsLesson 7Electrical diagnostic steps: voltage and current measurements, driver board tests, connector and harness checksProvides sequential electrical diagnostics for hopper circuits. Includes voltage/current checks, driver board tests, connector reviews, harness continuity, and schematic tracing for payout signals.
Safety and isolation prior to measurementsMeasuring hopper supply voltage and rippleChecking motor current and stall statesDriver board output and part testsConnector, harness, and continuity verificationsLesson 8Coin hopper types and internal mechanisms: motor-driven, stepper, disc, star wheel designsExamines primary hopper types and coin movement mechanisms. Covers motor varieties, drive systems, discs/star wheels, path geometry, and how designs impact speed, precision, and durability.
Motor-driven hopper structure overviewStepper motor control and stepping behaviourDisc and star wheel coin conveyance designsCoin path geometry and separation featuresWear areas in gates, discs, and agitatorsLesson 9Causes of wrong payouts: sensor misreads, mechanical wear, coin jams, counterfeit/size variance, software countersAnalyses incorrect payout reasons. Discusses sensor errors, wear, jams, fake/off-size coins, and software issues, with ways to pinpoint mechanical, electrical, or logical faults.
Signs of overpay and underpay incidentsSensor errors and missed coin signalsMechanical wear, drag, and partial jamsImpacts of off-size or fake coinsSoftware counter and setup errors
