Wincor CMD‑V4 Cash Dispenser Fault‑Code List | Practical ATM Field Maintenance Guide

Complete fault‑code reference for Wincor CMD‑V4 (AZM) cash dispenser. Understand digital tube error codes, root causes & step‑by‑step field repair for ATM maintenance technicians.

Posted: Technical Sharing | ATM Hardware Maintenance

Introduction

ATM downtime directly costs fleet operators lost transaction revenue and expensive emergency service calls. The Wincor CMD‑V4 (AZM) cash dispenser, widely used in ProCash ATMs, shows two‑digit fault codes on its on‑board digital tube — yet many field technicians skip this local diagnostic information and only rely on upper‑level host logs.

Unnecessary board replacement, repeated site visits and long service outages often happen simply because technicians cannot interpret these hardware‑level error codes correctly.

Based on official service documentation and real‑world field maintenance cases, this article compiles startup indicators, full list of common fault codes, root‑cause analysis and actionable troubleshooting workflows for CMD‑V4. You can use this as a quick on‑site reference to boost your first‑fix rate and cut maintenance costs.

⚠️ Safety Reminder: Always power‑off the module before mechanical inspection. Use built‑in tests: Function 1=Reset; Function 2=Mechanical Test; Function 3=Note Dispense Test; KDIAG DYK for sensor self‑tests. Only use dry‑cleaning for all optical sensors.

Power‑on Startup Digital‑Tube Indicators

These appear during boot‑up and are not actual operational faults.

High‑Frequency Operational Fault Codes & Resolution

Below are the most‑encountered two‑digit status codes shown during live operation, including failure triggers and actionable field steps, sourced from CMD‑V4 AZM service recordsManualsLib.

Code 01: Software Fault

Root Cause: Firmware runtime error. Troubleshooting: Trigger Function 1 (software reset) via the module function button. If the fault recurs, re‑download the CMD‑V4 firmware.

Code 10: Controller Failure

Root Cause: Severe ZAC circuit failure detected during power‑on self‑test. Troubleshooting: Replace the CMD‑V4 main controller board.

Code 11: Firmware Missing

Root Cause: No valid firmware loaded on controller hardware. Troubleshooting: Download correct CMD‑V4 firmware package.

Code 12: Independent Switch‑On / Safety‑Switch Open

Root Cause: The CMD‑V4 module is not fully pushed into the cash‑out working position; safety switch stays open. Troubleshooting: Slide AZM fully into safe exit position until the safety switch closes.

Code 13: Full‑Bundle Retract Lock‑Up

Root Cause: Customer timeout triggers full‑bundle note retract; retracted banknotes remain stuck inside SAT horizontal transport instead of entering reject bin, locking the module state. Common triggers: shutter‑flap malfunction (see Code 28), heavy dust covering L27 and Z‑module sensors, or genuine customer timeout behaviour. Troubleshooting:

1. Open SAT assembly and manually remove trapped notes from the collecting tray.
2. Clean L27 and Z‑module optical sensors.
3. Operate SOP menu sequence 3‑1‑3; remove and re‑insert reject waste bin to clear lock‑up flag.
4. Perform mechanical test Function 2 to verify SAT movements.

Code 14: Minimum Configuration Missing

Root Cause: AZM requires at least one valid dispensing cassette plus one reject‑retract cassette to enter ready state. Cassette contact dirt, missing registration or physical removal triggers this fault. Troubleshooting:

1. Confirm one cash‑out cassette and reject bin are physically installed.
2. Clean cassette metal contact pins.
3. Run cassette registration via SOP menu 4‑1‑2.
4. Reset module and verify status 00.

Code 18: Banknote Jam During Dispensing

Root Cause: Note jam inside cash transport path. Frequently triggered by dust‑covered sensors (LAMx, LM, L1, L18, L19, L21, L22), note fragments or paper scraps blocking optical paths. Additional Lxx secondary codes will indicate which specific sensor is obstructedManualsLib. Troubleshooting:

1. Power‑off; extract full CMD‑V4 module. Clear all jammed notes and debris across the complete cash path from cassettes through SAT to reject compartment.
2. Inspect and clean the sensor indicated by the Lxx secondary fault code.
3. Push AZM back to cash‑out position and close safety switch, execute hardware reset.
4. Run KDIAG DYK sensor self‑test; check for permanently “covered” sensor status.
5. If jam repeats, inspect SAT stacker‑transport assembly or controller‑board condition.

Code 19: Collector‑Section Banknote Jam

Root Cause: Notes blocked inside SAT lateral transport; or heavy dust on L18‑L35 photosensors. Troubleshooting: Clear trapped notes; clean L18‑L35 sensor group; reset and run mechanical test Function 2.

Code 20: Single‑Note Recovery Switch (H2) Fault / Blockage

Root Cause: Mechanical blockage or malfunction of single‑reject switch H2 lifting magnet inside SAT unit. Troubleshooting:

1. Remove torn / jammed notes obstructing the H2 switch mechanism.
2. Loosen anchor peg, manually check mechanical movement of H2 lifting magnet.
3. Launch Function 2 mechanical test to observe switch motion.
4. If magnet cannot complete full travel, replace SAT assembly or main‑control board.

Code 22: Sensor Amplifier Fault / Sensor Initialisation Failure

Root Cause: Banknote fragments blocking cash‑path sensors; sensor initialization fails after power‑up or component replacement. All sensor light paths must be unobstructed for successful initialization. Troubleshooting:

1. Clear all banknote debris from the entire note path: cassettes → collector → presenter outlet → reject‑cassette inlet.
2. Return AZM to cash‑out position, close safety switch and perform full reset.
3. Persistent error 22 requires replacement of main‑control board.

Code 28: Bill‑Outlet Shutter‑Flap Malfunction

Root Cause: Shutter flap cannot open correctly. Three typical causes: loose fixing screw on shutter motor output shaft; degraded friction plate or foreign‑object jamming on shutter sliding track; faulty shutter‑position sensorManualsLib. Troubleshooting:

1. Inspect shutter outlet for foreign‑object obstructions.
2. Check tightening torque of small hex fixing screw on shutter motor pulley shaft.
3. Disassemble presenter outlet unit; clean shutter sliding tracks; restore friction‑plate friction performance.
4. Clean shutter‑position photosensor; replace sensor if mechanical test still fails.

Code 29: Bill‑Outlet Sensor Over‑Covered

Root Cause: Foreign material obscures outlet sensor; Z‑module connection failure. Troubleshooting: Clear debris around SAT presenter outlet; verify secure Z‑module wiring connections; perform Function 1 reset. If fault persists, replace Z‑module mask, SAT assembly or main‑control board sequentially.

Code 3X (X = 1‑6): Repeated Whole‑Bundle Recall

Root Cause: Frequent full‑bundle retraction triggered by skewed banknotes, slipping transport belts, folded leading‑edges on notes loaded in cassette X, or intermittent‑sensor interference. Initial occurrence is logged as warning; repeated events trigger hard fault 3X. Troubleshooting:

1. Remove cassette X; inspect for folded or damaged banknote leading edges. Reload neatly aligned notes.
2. Inspect V‑module dispensing area for torn‑note debris.
3. Check transport‑belt tension and roller engagement for slipping.
4. Verify ZAC connector and sensor‑element seating.
5. Execute Function 2 mechanical test to observe magnet‑actuator movement. Replace corresponding V‑module or main‑controller if symptoms remain.

Code 4X (X = 1‑6): Notes Cannot Be Picked from Cassette X / Pressure‑Sensor Abnormality

Root Cause: Two main scenarios: banknotes cannot be extracted from cassette X; or cassette pressure‑plate does not deliver correct pushing force. Notes mis‑aligned, folded edges, weak pusher‑plate spring, bad ZAC coupling or pressure‑sensor drift can all produce 4X faults. Troubleshooting:

1. Pull cassette X out; inspect banknote stacking quality. Ensure notes sit vertically with no folded front edges; convex side faces pressure transmitter. Realign mis‑stacked notes.
2. Check V‑module pick‑zone for note fragments. Confirm ZAC inter‑module connectors are properly mated.
3. Re‑insert cassette; run Function 3 note‑dispense test.
4. If motor runs but error 4X returns, manually inspect centrifugal‑shaft and recovery‑lever mechanical travel.
5. Use KDIAG cassette‑pressure‑check self‑test. Replace V‑module or main‑control board when pressure‑sensor hardware failure is confirmed.

Code 5X (X = 1‑6): Excessive Rejected Notes from Cassette X

Root Cause: High volume of double‑picks, out‑of‑spec width notes, folded or taped‑together banknotes originating from cassette X. Troubleshooting:

1. Take out cassette X and audit note quality. Remove damaged, taped or heavily‑creased banknotes.
2. Reload properly sorted banknotes and run multiple dispense tests.
3. Re‑calibrate reference values for note type if many good notes are still rejected.
4. If fault persists, adjust pick‑unit gap or replace V‑module / controller board.

Code 6X (X = 1‑6): Cassette‑X Hardware Fault

Root Cause: Cannot read‑out or write‑back cassette memory‑chip data; bad ZAC connection. Troubleshooting: Check ZAC‑cassette connector contacts. Swap suspect cassette into known‑good V‑module slot for cross‑validation. Replace main‑control board if fault follows the V‑module position.

Codes 70‑9A: Photosensor‑Dirt Warning Group

Practical field statistic: Roughly 70 % of CMD‑V4 sensor‑related faults are caused by dust contamination instead of electronic component damage. Always perform dry cleaning before replacing hardware components. These warning codes will not stop the ATM immediately; the module continues operation until sensor‑degradation crosses threshold and triggers automatic shutdown.

General troubleshooting for 70‑9A series:

1. Power‑down CMD‑V4. Use dry lint‑free cloth, soft brush or compressed air to clean sensor transmitter‑receiver windows. No liquid cleaner.
2. Re‑assemble module to cash‑out position, close safety‑switch and perform reset.
3. Launch KDIAG DYK self‑test. Any sensor reporting status 3 needs re‑cleaning.
4. If warning remains after thorough cleaning, inspect wiring harness and replace defective sensor or V‑module.

Preventive‑Maintenance Checklist for CMD‑V4

1. Consumable‑part monitoring: Replace pick‑roller assembly around  500 000 dispense cycles; renew transport‑belt set at 1 000 000 cycles; inspect cassette pusher‑plate‑spring fatigue during every cassette‑swap visit.
2. Scheduled sensor cleaning: Clean all photosensor surfaces during each maintenance visit. Use only dry‑method cleaning.
3. Banknote‑quality control: Prevent loading damp, torn, heavily‑creased or taped‑together notes.
4. Diagnostic best practice: Run KDIAG DYK sensor‑amplifier self‑test routinely; inspect historical fault‑code logs to achieve predictive maintenance before terminal outage occurs.
5. After component replacement: Always complete sensor initialization, cassette registration and multi‑note dispense verification for each cassette position.

Conclusion

The CMD‑V4 digital‑tube two‑digit fault codes deliver fast, direct on‑module diagnosis before connecting host‑system tools. Most failures originate from dust‑contaminated photosensors, mechanical wear of consumable parts, poor‑quality banknotes or cassette‑registration issues, rather than main‑controller hardware breakdown.

Standardised workflow: read local digital‑display fault‑code → clear mechanical blockages / debris → dry‑clean sensors → run built‑in function tests and KDIAG self‑test → only replace hardware when cleaning and re‑initialisation fail. Following this workflow will drastically reduce unnecessary part‑replacement costs and improve ATM fleet uptime.

If you require spare‑part sourcing or further technical consultation for Wincor CMD‑V4 / AZM modules, feel free to contact our technical‑support team.