Lesson 1Electronic control and payout logic: hopper drivers, fuses, coin counters and PCB rolesExplains slot electronics directing hopper payouts. Covers driver circuits, fuses, relays, counters, and board logic, including signals, pulses, fault detection, and game CPU links.
Hopper driver outputs and enable signalsFuse protection and overcurrent behaviorCoin counter inputs and pulse shapingMain logic PCB payout control flowTimeouts, error flags, and lockup statesLesson 2Post-repair verification: payout simulation tests, multi-denomination payout runs, audit of meter and event logsOutlines hopper repair checks before service resumption. Includes simulations, varied coin tests, timing, and log reviews for accurate accounting and alerts.
Single-denomination payout simulationsMulti-denomination mixed payout runsVerifying coin count versus pulses loggedChecking meters, audits, and event logsDocumenting test results and sign-offLesson 3Inspection and mechanical test plan: clearing jams, checking coin path alignment, wear inspection, bearing and motor checksSets out a mechanical test routine for hoppers. Includes safe breakdown, jam clearance, path alignment, wear checks, and load tests on bearings, shafts, motors to curb repeats.
Safe removal and bench setup of hopperProcedures for clearing coin jamsChecking coin path and chute alignmentInspecting gates, discs, and agitators for wearBearing, shaft, and motor free-spin testsLesson 4Causes of false "Hopper Empty/Jam" indications: wiring, sensor occlusion, stuck actuators, insufficient hopper voltageLooks at false empty or jam alerts. Covers wiring issues, blocked sensors, jammed parts, low voltage, loose connections, with targeted tests for fixes.
Recognizing false empty and jam symptomsFinding broken or shorted sensor wiringDetecting dirty or occluded sensor opticsIdentifying stuck levers and actuatorsLow-voltage and brownout related alarmsLesson 5Sensor types for coin detection and hopper level: optical interrupters, IR, micro-switches, weight/floor sensorsReviews coin and level sensors. Details optical breaks, IR reflectors, microswitches, weight sensors, including fitting, alignment, faults, and cleaning.
Optical interrupter theory and alignmentIR reflective coin detection techniquesMicroswitch actuators and lever adjustmentsWeight and floor sensor level detectionCleaning and protecting sensor windowsLesson 6Calibration and configuration: hopper pulse counts, coin denomination mapping, coin size adjustments and software parameter updatesGuides hopper calibration and setup. Sets pulses per coin, denomination links, size tweaks, and software updates while keeping to regulations.
Setting hopper pulses per paid coinMapping denominations to hopper outputsAdjusting for coin diameter and thicknessUpdating game software payout parametersRecording calibration data for auditsLesson 7Electrical diagnostic steps: voltage and current measurements, driver board tests, connector and harness checksStepwise electrical checks for hoppers. Voltage/current tests, driver board checks, connector inspections, harness continuity, using diagrams for payout signals.
Safety and isolation before measurementsMeasuring hopper supply voltage and rippleChecking motor current and stall conditionsDriver board output and component testsConnector, harness, and continuity checksLesson 8Coin hopper types and internal mechanisms: motor-driven, stepper, disc, star wheel designsExamines hopper types and coin movement. Motor varieties, drives, discs, star wheels, path shapes, and mechanical impacts on speed, accuracy, durability.
Motor-driven hopper architecture overviewStepper motor control and indexing behaviorDisc and star wheel coin transport designsCoin path geometry and singulation featuresWear points in gates, discs, and agitatorsLesson 9Causes of wrong payouts: sensor misreads, mechanical wear, coin jams, counterfeit/size variance, software countersBreaks down incorrect payout reasons. Sensor errors, wear, jams, fake/off-size coins, software counts, with ways to pinpoint mechanical, electrical, or logic faults.
Symptoms of overpay and underpay eventsSensor misreads and missed coin pulsesMechanical wear, drag, and partial jamsEffects of off-size or counterfeit coinsSoftware counter and configuration errors
