c-4501bizhub C4000i

Konica Minolta bizhub C4000i C-4501 Error: Fix

The Konica Minolta bizhub C4000i error C-4501 refers to a malfunction in the laser polygon motor unit. This fault prevents the printer from synchronizing the light beam with the imaging drum, stopping all print operations. To troubleshoot, you should verify connection points and system firmware, though professional service is often required. The bizhub C4000i is designed for precision laser printing at a high pace.

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Common causes

  • 1Electronic failure of the laser polygon motor.
  • 2Dust accumulation on the laser unit mirror.
  • 3Sync failure between the control board and laser diode.
  • 4Toner dust buildup clogging the imaging optics.

Solutions

Quick Diagnosis

Error C-4501 occurs if the polygon motor cannot reach its required operational speed. If the printer stays in 'Ready' but halts whenever you send a job, it's likely a mechanical issue within the laser assembly.

Step-by-Step Solution

  1. Extended Shutdown: Turn off the printer and pull the plug for 10 minutes to allow the hardware to reset.
  2. Firmware Update: Use the administration menu to see if an update is available to optimize component timing.
  3. Toner Inspection: Re-seat all original TNP-79 toners to ensure no debris interferes with the light path.
  4. Internal Cleaning: Use compressed air to clean dust from the internal imaging bay.

Prevention and Maintenance

Store your printer in a stable temperature (20-25°C). Avoid high-humidity areas, as this can corrode sensitive laser diodes. Always use genuine toners to avoid dust buildup.

When to Call a Technician

If the reset does not clear the error, the polygon motor itself may have suffered a permanent failure and needs replacement by a certified tech.

Device Technical Specifications

  • Technology: Color Laser Multifunction
  • Speed: 40 ppm
  • Connectivity: Gigabit Ethernet / USB 2.0
  • Feed Capacity: 550 sheets
  • Compatible Consumables: Original TNP-79 Series
  • Usage: Corporate High-Volume
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Firmware Check

    Check the panel for any pending system firmware updates to improve controller stability.

  2. 2

    Full Power Cycle

    Shut down the printer, wait for 5 minutes, and power it back on to trigger recalibration.

  3. 3

    Toner Check

    Ensure all original TNP-79 toners are fully seated.

Frequently asked questions

This code signifies an issue with the laser polygon motor speed or light synchronization within the imaging unit.

No, you should stop using the printer as printouts will be blank or heavily distorted.

Not necessarily; while toner leaks can cause issues, the fault is usually in the laser motor motor assembly.

Maintain stable temperature in the office and avoid peak usage beyond recommended monthly cycles.

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