Konica-Minolta bizhub 458e
Troubleshooting. IQ. White line 1, white band 1, black line 1, black band 1
- White line
- White band
- Black line
- Black band
Initial troubleshooting procedure
Step | Section | Check item | Result | Action |
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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 | Service Mode -> Stabilizer | Select [Service Mode] -> [Imaging Process Adjustment] - > [Stabilizer] -> [Stabilization Only] and the image trouble is eliminated. | NO | Go to the next step |
3 | Service Mode -> Gradation Adjust | Select [Service Mode] -> [Imaging Process Adjustment] - > [Gradation Adjust] and the image trouble is eliminated. | NO | Go to the next step. |
4 | Image check | • Select [Service Mode] -> [Test Mode] -> [Halftone Pattern]. Select "SINGLE", "HYPER", "Error diffusion", "1- Sided", "Black(1PC)", and "Full Bleed", enter "64" for Density, and load tray 2 with A4 paper. Press the start key. This runs a print cycle. • Check the image after printing and the abnormal image is evident. |
NO | Go to scanner troubleshooting procedure. |
Engine troubleshooting procedure
Step | Section | Check item | Result | Action |
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1 | Service Mode -> Table Number | Select [Service Mode] -> [State Confirmation] -> [Table Number]. The measured value is close to the standard value.
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NO |
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2 | Write section | Sharp white line or black line is blurry. | YES | Clean the PH window. |
3 | 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. |
4 | Photoconductor section | There is a positive contact between the electrostatic charger application terminals and the high voltage unit connection terminals (C1). | NO | Clean or correct the terminal. |
5 | Developing section | There is a positive contact between the developing bias application terminals and the high voltage unit connection terminals (B1). | NO | Clean or correct the terminal. |
6 | Photoconductor section | Scratches on photoconductor. | YES |
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7 | Photoconductor section | Toner line or dirt on photoconductor. (improper cleaning) | YES | Replace the imaging unit. |
8 | Photoconductor section | Faint lines evident on the entire surface as if the surface were brushed off. | YES | Replace the imaging unit. |
9 | 1st transfer section | 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. |
10 | 1st transfer section | Scratches or dirt on 1st transfer roller. | YES |
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11 | Developing section | Toner bristles not even on the developing roller, resulting in a line or band. | YES | Replace the imaging unit. |
12 | Paper path | There is dirty or foreign matter on paper path. | YES | Check or clean the paper path including the duplex section. |
13 | Transfer belt unit | Lines that can be removed by cleaning are evident on the transfer belt. (improper cleaning) | YES |
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14 | Transfer belt unit | Dirt, scratches, or foreign matter on the transfer belt. | YES |
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15 | 2nd transfer section | Dirt or foreign matter on the 2nd transfer roller. | YES |
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16 | 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. |
17 | Fusing unit | There is dirty or foreign matter on paper path of fusing unit. | YES | Clean. (Disassembling the fusing unit is prohibited.) |
18 | Fusing unit | Scratches on roller, pad, and belt in fusing unit. | YES | Replace the fusing unit. |
NO |
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Scanner troubleshooting procedure
Step | Section | Check item | Result | Action |
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1 | Original | Original is damaged or dirty. | YES | Change the original. |
2 | When original glass is being used | A fault occurs in the image read through the original glass. | YES | Go to step 5. |
3 | When DF is being used: 1st side | A fault occurs in the image read from the 1st side while DF is being used. | YES | Go to step 10. |
4 | When DF is being used: 2nd side | A fault occurs in the image read from the 2nd side while DF is being used. | YES | Go to step 13. |
Main body side_original glass | ||||
5 | DF side_ Original pad | Original pad of DF is dirty. | YES | Clean. |
6 | Original glass | Original glass is dirty. | YES | Clean. |
7 | End face of original is reproduced as a line | Select [Service Mode] -> [Machine] -> [Scan Area] -> [Scanner Image Side Edge] and make the necessary adjustment, and the image trouble is eliminated. | NO | Go to the next step. |
8 | Line occurring due to faulty shading | Select [Service Mode] -> [Machine] -> [Scan Area] -> [Image Position: Leading Edge] and make the necessary adjustment, and the image trouble is eliminated. | NO | Go to the next step. |
9 | Parts along scanning path | Light guide or lens array is dirty. | YES | Clean. |
NO | Replace the CIS module. | |||
Main body side_DF original reading section | ||||
10 | Main body side_reading section | Original reading glass of main body is dirty. | YES | Clean. |
11 | Service Mode -> Read Pos Adj | Select [Service Mode] -> [ADF] -> [Read Pos Adj] and the image trouble is eliminated. | NO | Go to the next step. |
12 | Parts along scanning path | Light guide or lens array is dirty. | YES | Clean. |
NO | Replace the CIS module. | |||
DF side_original reading section | ||||
13 | CIS glass cleaning | CIS glass is dirty. | YES | Clean. |
14 | CIS reading section | CIS reading section is dirty. | YES | Clean. |
15 | When DF is being used: 2nd side | Shading correction surface of DF is dirty. | YES | Clean. |
NO | Replace the DF CIS module assy. |