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Reader swap procedure
Swap readers without losing data.
Updated Feb 9, 2026
Overview
Payment issues typically come from MDB wiring, reader configuration, or settlement mismatches. Swap readers without losing data.
Diagnostics
- Inspect MDB harness and pins for damage.
- Verify reader configuration and enablement.
- Compare transaction logs to settlement reports.
Resolution steps
- Reseat harnesses and confirm power levels.
- Reprovision reader settings and test small transactions.
- Contact processor support if settlements mismatch.
Preventive maintenance
- Perform a monthly test vend on each reader.
- Keep firmware and software versions documented.
- Review payout schedules with accounting.
When to contact support
swap