Konica-Minolta bizhub 308e
Troubleshooting. IQ. Uneven density 1
Troubleshooting procedure
Step | Section | Check item | Result | Action |
---|---|---|---|---|
1 | Paper Setting | The paper to be used for printing does not match the paper type and size of paper setting selected on the machine. | YES | Make the paper setting again on the machine. |
2 | IDC sensor | IDC sensor is dirty. | YES | Clean. |
3 | Service Mode -> Stabilizer | Select [Service Mode] -> [Imaging Process Adjustment] - > [Stabilizer] -> [Stabilization Only] and the image trouble is eliminated. |
NO | Go to the next step. |
4 | Service Mode -> Gradation Adjust | Select [Service Mode] -> [Imaging Process Adjustment] - > [Gradation Adjust] and the image trouble is eliminated. |
NO | Go to the next step. |
5 | Image check |
|
YES | Go to the next step. |
6 | Service Mode -> TCR Level Setting | Select [Service Mode] -> [Imaging Process Adjustment] - > [TCR Level Setting] and make the necessary adjustment, and the image trouble is eliminated. |
NO | Go to the next step. |
7 | Write section | Dirt or foreign matter on the dust-proof glass of the PH. | YES | Clean the PH window. |
8 | Charging section | Foreign matter on charging roller. | YES | Lightly wipe the surface clean of foreign matter using hydro-wipe (65AA-99##). Note: Do not apply a strong force to the surface of the charging roller. As doing so can damage the surface. |
9 | Photoconductor section | Dirt, scratches, or foreign matter on the photoconductor. | YES |
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10 | 1st transfer section | Dirt, scratches, or foreign matter on the 1st transfer roller. | YES |
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11 | 1st transfer section | Faulty pressure/retraction operation of the 1st transfer roller. | YES |
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12 | Developing section | Toner bristles not even on the developing roller, resulting in a line or band. | YES | Replace the imaging unit. |
13 | Paper path | There is dirty or foreign matter on paper path. | YES | Check and clean the paper path including the duplex section. |
14 | Transfer belt unit | Lines that can be removed by cleaning are evident on the transfer belt. (improper cleaning) | YES |
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15 | Transfer belt unit | Dirt, scratches, or foreign matter on the transfer belt. | YES |
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16 | Transfer belt unit | There is a positive contact between the transfer belt application terminals and the high voltage unit connection terminals (T1). | NO | Clean or correct the terminal. |
17 | Transfer belt unit | Transfer belt rotates faultily. | YES | Replace the transfer belt unit. |
18 | 2nd transfer section | Dirt or foreign matter on the 2nd transfer roller. | YES | • Remove the foreign matter. • Replace the transfer roller unit. |
19 | 2nd transfer section | Faulty pressure/retraction operation of the 2nd transfer roller. | YES | • Correct. • Replace the transfer roller unit. |
20 | 2nd transfer section | There is a positive contact between the application terminals of the 2nd transfer and the connection terminals (T2) and ground terminal of the high voltage unit. | NO | Clean or correct the terminal. |
21 | Fusing unit | There is dirty or foreign matter on paper path of fusing unit. | YES | Clean. (Disassembling the fusing unit is prohibited.) |
22 | Service Mode -> Initialize + Image Stabilization | Select [Service Mode] -> [Imaging Process Adjustment] - > [Stabilizer] -> [Initialize + Image Stabilization] and [Gradation Adjust], and the image trouble is eliminated. | NO | • Replace the fusing unit. • Replace the PH unit. • Replace the high voltage unit. • Replace the base board. |