Jumat, 17 Agustus 2018
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| Slam a winner, tiket tidak keluar |
Failure Symptoms
Error Code Displayed: The game board enters an error state (often showing
Er 03,Err-Tk, or similar ticket fault indicators depending on the mainboard model).Motor Runs Continuously: The ticket dispenser motor keeps spinning endlessly without pushing paper out, eventually triggering a timeout system halt.
Complete Silence: When points are scored, the ticket motor does not run at all, and no tickets are fed.
Jam & Tear: Tickets enter the mechanism but crumple, jam, or tear before exiting the payout notch.
Failure Analysis: Where Is the Problem Located?
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| Tiket tersangkut akibat terjepit |
When tickets fail to pay out, the fault typically lies in one of four areas:
[Mainboard CPU Signal] ──> [Wiring Harness / Power supply] ──> [Dispenser Motor Mechanism] ──> [IR Ticket Notch Sensor]
Mechanical Jamming: Paper lint, foreign objects, or misaligned paper feed paths.
Optical Notch Sensor Failure: The dispenser's infrared sensor fails to count paper notches, so the CPU doesn't know tickets are exiting.
Motor Circuit Failure: The $12\text{V DC}$ drive motor or its control transistor is damaged.
Logic & Driver IC Issue: The mainboard PCB signal buffer (e.g., input/output logic ICs) is not transmitting the command.
Step-by-Step Diagnostic & Repair Process
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| Tiket tersangkut akibat terjepit |
Step 1: Physical & Mechanical Inspection
Check Ticket Stock: Ensure tickets are properly loaded, not folded incorrectly, and that the tension roll is not too tight.
Inspect the Roller Path: Open the ticket dispenser module (such as Deltronic Labs DL-1275 or similar standard mechanisms). Check rubber rollers for wear, hardening, or accumulated paper dust.
Clean Rollers: Wipe down drive rollers using 99% Isopropyl Alcohol (IPA) to restore grip.
Step 2: Testing the Optical Ticket Notch Sensor (IR Sensor)
Most arcade ticket dispensers use an infrared through-beam sensor to detect the small triangle notches between individual tickets.
Symptom of Dirty/Faulty IR Sensor: The motor dispenses tickets continuously without stopping until an error triggers, or it dispenses 1 ticket and immediately halts with an error.
How to Fix:
Blow out dust from the optical notch sensor channel using compressed air.
Use a cotton swab with IPA to clean the small optical lenses (transmitter and receiver) on the dispenser board.
Inspect the notch LED status on the dispenser board: the LED should flash rapidly as tickets pass through the beam gap. If the LED stays solid ON or OFF, replace the ticket sensor board assembly.
Step 3: Voltage & Wiring Verification
Measure power input at the ticket dispenser connector pins using a multimeter:
Power Pin: Should read $+12\text{V DC}$ (or $+5\text{V DC}$ depending on dispenser model).
Ground (GND): $0\text{V}$.
Measure the Enable/Trigger Line while triggering a payout test:
When activated, the control line from the mainboard should pull LOW or HIGH to signal the motor drive circuit.
If $+12\text{V}$ power is missing, check cabinet fuses or power supply connections.
Step 4: Board-Level Diagnostic (Mainboard Driver Repair)
If the ticket motor, wiring, and sensor are tested and functional on a bench setup, but the machine still won't trigger payout from the main cabinet:
Trace the Ticket Output Line: Trace the trigger trace from the ticket output header back to the mainboard drive transistor or ULN darlington array IC (e.g., ULN2003 / ULN2803) or buffer logic IC.
Check Buffer ICs: As seen with coin input faults, signal line drivers between CPU and peripheral ports can burn out from power fluctuations.
Replace Damaged Transistor/IC: Desolder and replace damaged drive transistors or ICs on the main board to restore output control to the dispenser.
Quick Reference Troubleshooting Summary
| Symptom | Primary Cause | Recommended Action |
| Motor runs constantly, no stop | Dirty/Defective IR Notch Sensor | Clean sensor channel with IPA or replace dispenser optical board. |
| Motor does not turn at all | Blown fuse, broken wire, or dead motor | Check $+12\text{V}$ supply line and measure motor coil continuity. |
| Tickets jam frequently | Worn rubber rollers or physical obstruction | Clean rubber wheels; replace dispenser roller assembly if hardened. |
| Error code shown, sensor verified working | Faulty driver on mainboard PCB | Trace PCB output line; replace buffer IC or drive transistor. |
