Konica Minolta Code 9903 !full! (Deluxe)

Konica Minolta Code 9903: Causes, Troubleshooting, and Permanent Fixes

Step 2: Reset the Machine

Sometimes the error persists in memory even after the paper is removed.

1. Turn the machine OFF using the main power switch (usually located on the side or front panel).
2. Wait for 10–15 seconds.
3. Turn the machine ON.
4. Allow the machine to go through its warm-up cycle. If the code returns immediately, proceed to Step 3.

Preventing Future Occurrences

• Enable Auto-Delete – In Administrator Settings, turn on Auto Delete Old Job Logs and set an appropriate threshold (e.g., 30 days).
• Increase Log Capacity – If your model has an HDD, upgrade or adjust the log storage allocation.
• Schedule Regular Log Purges – Use Konica Minolta’s CS Remote Care or a script via Web API to clean logs monthly.

Preventing Future Code 9903 Errors

Once fixed, take these precautions:

1. Use a Line Conditioner or UPS – Voltage sags are a leading cause of watchdog timeout errors. Connect your MFP to a battery backup with AVR (Automatic Voltage Regulation).
2. Keep Firmware Current – Subscribe to Konica Minolta’s update notifications. Critical "watchdog timing" patches are released quarterly.
3. Monthly Cable Inspection – Reseat the main flat harness every 6 months. Use dielectric grease on connectors in high-humidity environments.
4. Monitor Operating Temperature – Ensure the machine has 4 inches of clearance on all sides. Clean dust filters monthly.

2. Scope and affected models

• Typical model families where 9903 has been reported: bizhub C and bizhub series (e.g., C224e, C284e, C360i, C554e) and some older bizhub models.
• Note: Exact meaning can vary by model and firmware. Technicians should consult the service manual for the specific model.

What is Error Code 9903?

On Konica Minolta multifunction printers (such as the bizhub series), Code 9903 generally signifies a paper transport error or jam. Specifically, the machine has detected that paper has not passed through a specific sensor within the expected time frame, or a sensor is incorrectly detecting paper when none is present. konica minolta code 9903

While the exact location can vary by model, this code is most frequently associated with the Paper Ejection/Exit Section or the Automatic Document Feeder (ADF).

How to Fix Code 9903

The solution is straightforward and does not require a service call in most cases: Turn the machine OFF using the main power

1. Access Service Mode

   • Press Menu → Counter (or Stop 0 0 Stop 0 1 depending on model—verify per device).
   • Enter the 8-digit service password (default often 9272927292729272 or 00000000 for older models; consult your administrator).

2. Navigate to Log Settings

   • Go to Service Mode → System 2 → Job Log Auto Delete Setting.

3. Manually Clear the Log

   • Select Job Log Auto Delete → Set to Delete → Execute.
   • Confirm deletion. The code should clear instantly.

4. Restart the MFP

   • Power cycle the device to reset the job management subsystem.

⚠️ Note: Deleting job logs removes historical usage records. If you need them for accounting/auditing, export logs via PageScope Net Care or Web Connection before clearing.

Solution C: Replace the Video Board (Most Reliable)

• Cost: $250–$600 (used) / $800+ (new)
• Part numbers vary by model, e.g., A60J H060 01 (for bizhub 364e series).
• After replacement, you must run: Laser Adjustment, Gradation Adjustment, and NVRAM Recovery via service mode. Without these, print quality will be unusable.

2. Faulty Memory (DIMMs)

The printer uses RAM modules (DIMMs) to process and spool image data. A single bad memory sector can trigger 9903 when the printer tries to write video data to that sector. Preventing Future Occurrences