Is your Ricoh color copier printing too dark or too light? Here is 3400 and 3440 Code Adjustment Tutorial.
When using Ricoh color photocopiers, such as the MPC3003, C3503, C4503, C5503, C3004, C3504, C4504, C5504, C6004, and IMC2000, C3000, C4000, C5000, C6000 series, you may encounter print or copy issues that are too dark or too light. Using code adjustment in maintenance mode can quickly improve density issues. The following steps provide detailed instructions.
1. Entering Maintenance Mode
First, press the “Reset” button on the copier, enter “806182”, and then press and hold the “C” button to enter maintenance mode. This will prepare you for subsequent density adjustments.
2. Setting Fixed Toner Supply Mode (Code 3400)
After entering maintenance mode, select the first option and enter the code “3400#”. This code changes the machine’s toner feeding method. The system defaults to the third option “Automatic Toner Feeding”. Change it to the first option “Fixed Toner Feeding”, then click “OK” to save. Switching to fixed toner feeding mode allows for more precise and controllable density adjustments.
3. Adjusting the Fixed Toner Feeding Amount (Code 3440)
Click “SP” to return and enter the code “3440#” to enter the fixed toner feeding adjustment interface. The toner feeding values for black, cyan, magenta, and yellow are displayed. Lower values indicate lighter prints, while higher values indicate darker prints.
If, after printing a single-color test page, you find that a color (such as cyan) is too light, increase the value for that color (for example, to 30%). Through gradual testing, find the appropriate density.
4. Testing and Confirming Density
After completing adjustments, click “SP,” enter the code “2109#”, select the single color to be tested, and click “COPY” to print the test page. You can also print a double-sided color test page and repeat until you achieve a satisfactory density.
5. Saving Settings and Restoring Automatic Mode
After confirming that the density adjustment is appropriate, enter the code “3030#” to initialize the developer for the adjusted color. This will allow the machine to remember the new toner level. Click “Execute” to complete the initialization.
After successful initialization, you need to return the previously changed toner level setting to the default “Automatic” setting to ensure the machine can automatically adjust the toner level properly.
6. Fundamental Solution: Developer Inspection and Treatment
The above code adjustment method can temporarily improve density issues, but long-term effectiveness may be affected by the condition of the developer. If the developer is aged or contains impurities, abnormal density may occur. In this case, the carrier should be screened to remove impurities. If the developer is severely aged, we recommend to replace the carrier directly to fundamentally resolve the problem of overly high or low density.
During the adjustment process, fine-tune the values based on the test page results to avoid making large adjustments at once. Regularly checking the developer condition in daily use can reduce the frequency of density issues and ensure consistent print and copy quality.
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