How to Restore Normal Operation of Gaming Machines: Recovery Guide
After cheating has been detected and blocked, after hardware has been repaired, or after a configuration error has been corrected — the machine needs to be returned to normal operation. Restoring normal operation is not simply turning the machine back on. It means verifying that every subsystem is functioning correctly, that the data shows expected results, and that the machine can be trusted again. This guide covers the complete restoration process.
When Restoration Is Needed
You need to restore normal operation after: (1) Cheating was detected and bus monitors were deployed — you need to verify that the machine is now operating normally under protection, (2) A hardware component was replaced — new components may have different calibration and must be verified, (3) A configuration error was corrected — accidentally changed settings must be restored to the correct values, (4) Firmware was reloaded — after flashing factory firmware, the machine must be verified to ensure the reload was successful, and (5) An extended downtime (power outage, flood, relocation) — machines should be verified after any extended period of non-operation.
Phase 1: Physical Verification
Step 1: Cabinet integrity check. Are all cabinet doors and access panels closed and locked? Are all tamper-evident seals intact? Are all port blocking plates in place? Is the bus monitoring device LED green?
Step 2: Peripheral connection check. Are all peripherals (bill validator, coin mechanism, button deck, touchscreen, printer, hopper) securely connected? Are all cables undamaged (no cuts, kinks, or exposed wires)? Are all connectors fully seated (not loose or partially disconnected)?
Step 3: Power and network check. Is the machine receiving stable power (check power indicator)? If networked, is the network cable connected and the link light active? Is the machine’s clock showing the correct date and time?
Phase 2: Software and Configuration Verification
Step 1: Firmware version check. Access the configuration menu. Note the displayed firmware version. Compare to the expected version (recorded in your configuration baseline document). If versions do not match: reload factory firmware, re-verify version, and document the reload.
Step 2: Configuration baseline comparison. Compare each configuration setting to the documented baseline: hold percentage, payout table, feature enable/disable settings, communication settings, and security settings (PINs, access controls). For each setting that differs from the baseline: if the difference was intentional (you changed it), document the change and update the baseline. If the difference was unintentional (someone else changed it), investigate and correct to baseline value.
Step 3: Log review. Review the machine’s log for the period since the last verified normal state. Look for: configuration changes (who changed what and when), error events (hardware faults, communication failures), and unusual activity (attempted access, firmware reloads, peripheral disconnections). Any event that cannot be explained by authorized maintenance should be investigated before declaring normal operation.
Step 4: Bus monitor verification. Check the bus monitor: LED is green (active protection), device log shows blocked attacks since installation, and device is reporting to the cloud dashboard (if applicable) or local log is accessible.
Phase 3: Functional Verification
Step 1: Bill validator test. Insert a known-good bill ($1 or local equivalent). The bill is accepted on the first attempt. Credits increment correctly. The bill is stacked in the cash box (not returned or rejected). Test with 3-5 inserts. If any insert fails, clean the validator and retest.
Step 2: Coin mechanism test. Insert known-good coins of each denomination the machine accepts. Each coin is accepted. Credits increment correctly. Coins route to the cash box (not the return tray). Test 5-10 coins of mixed denominations.
Step 3: Game play test. Play 10-20 complete games (or a full game cycle for non-standard games). Verify: games start and end normally, game outcomes are displayed correctly, credits deduct and add correctly, bonus rounds trigger correctly (if applicable), and no error messages or freezes occur.
Step 4: Payout test. For machines with cash payout: accumulate enough credits to trigger a payout (or use the test mode payout function). Verify: hopper dispenses the correct amount, payout is counted correctly, and machine returns to idle state after payout. For ticket machines: trigger a ticket print. Verify: ticket prints correctly, ticket barcode scans correctly (if you have a reader), and ticket value matches the payout amount.
Step 5: Audit function test. Access the machine’s audit menu (if available) and verify: credit-in counter reflects the test plays, credit-out counter reflects the test payouts, and game play counter reflects the test games. The audit numbers should match what you know you did during testing.
Phase 4: Monitoring Period
After passing all phases, the machine is returned to service but remains under enhanced monitoring for 1-2 weeks:
Daily: Check reconciliation (cash vs credits). Should show normal (small, random) variance.
Weekly: Review bus monitor logs. Blocked attacks should be minimal and random (not clustered on this machine).
After 1 week: Compare this machine’s win rate to other machines of the same model. Should be within the normal range (±10% of other machines).
After 2 weeks: If all indicators are normal, the machine is considered restored to normal operation. Exit enhanced monitoring.
Restoration Checklist
| Phase | Item | Pass/Fail | Notes |
|---|---|---|---|
| 1. Physical | Cabinet locked and sealed | ☐ | |
| 1. Physical | Peripherals connected securely | ☐ | |
| 1. Physical | Power and network stable | ☐ | |
| 2. Config | Firmware version correct | ☐ | |
| 2. Config | Configuration matches baseline | ☐ | |
| 2. Config | Log reviewed, no anomalies | ☐ | |
| 2. Config | Bus monitor green and logging | ☐ | |
| 3. Functional | Bill validator works | ☐ | |
| 3. Functional | Coin mechanism works | ☐ | |
| 3. Functional | Game play normal | ☐ | |
| 3. Functional | Payout works correctly | ☐ | |
| 3. Functional | Audit functions correct | ☐ |
All items must be marked Pass before the machine enters Phase 4 monitoring.
Our guide includes a printable restoration checklist poster.
Common Questions
How long does restoration take?
Physical and configuration verification: 15-30 minutes per machine. Functional verification: 30-45 minutes per machine. Monitoring period: 1-2 weeks of normal operation. Total staff time: 1-2 hours per machine for active phases.
What if a test fails during restoration?
The machine does not return to service. Diagnose and fix the specific failure. Re-run all tests for that phase. If the same test fails again, the issue may be deeper (mainboard, firmware corruption) — consult the manufacturer or a technician.
How do I know when restoration is truly complete?
Restoration is complete when: all checklist items are Pass, the machine has operated for 2 weeks under enhanced monitoring with normal indicators, and no anomalies were detected during the monitoring period. Document the restoration completion: date, machine ID, checklist results, and monitor summary. File the restoration record with the machine’s maintenance history.
Restoration Is a Discipline
Restoring a machine to normal operation is not a quick process. It requires systematic verification of every subsystem. But the discipline pays off: when a machine passes through complete restoration, you know with confidence that it is operating correctly. There is no doubt, no lingering suspicion that something is still wrong. Restore systematically. Trust the results.