TROUBLESHOOTING
4.5.4 Signs and Measures at Poor toner cartridge
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| Fault | Signs | Cause & Check | Solution |
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| Light image and | • The printed image | 1. If the image is light or unclean | 1. All of 1, 2, 3 above- | |||||
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| partially blank | is light or unclean | and untidy printed image - | If it become better by shaking, | |||||
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| image | and untidy. | Shake the developer and | replace with a new developer | |||||
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| (The life is ended.) |
| then recheck. | after | |||||
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| • Some part of the | (1)NG : Check the weight of | closing state of the life span. | ||
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| Digital Printer |
| image is not print- | the developer |
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| ed. | (2)OK : Lack of toner, so the |
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| Digital Printer |
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| life is nearly closed. |
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| Digital Printer |
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| • Periodically a noise | 2. Some part of image is not | 2. In case of 2- | |||
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| Digital Printer |
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| as "tick tick" occurs. | printed - Shake the develop- | If it becomes better after clean- | |||
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| Digital Printer |
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| er and then recheck. | ing the LSU window, then the | ||
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| (1)NG : Check the weight of | developer is normal. | ||
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| the developer and | (Because of foreign substance | ||
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| clean the LSU window | on the LSU window, the image | ||
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| with a cotton swab, | has not been printed partly.) | ||
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| then recheck. |
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| (2)OK : Lack of toner, so the |
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| life is nearly closed. |
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| 3. Periodically a noise as "tick | 3. In case of 3- | ||
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| tick" occurs - Measure the | If the cycle of noise is about 2 | ||
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| cycle and the weight of the | seconds, the toner inside the | ||
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| developer. | developer has been nearly | ||
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| exhausted.( Purchase and | ||
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| replace with a new developer | ||
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| after using about 200 sheets at | ||
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| the point of occurrence) | ||
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| 4. White vertical stripes on the | 4. In case of 3- | ||
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| whole screen or partly : | This is a phenomenon caused | ||
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| Check the weight of the | by lack of toner, so replace with | ||
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| developer. | a new developer. | ||
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| Toner | • Toner is fallen on | 1. Toner is fallen on the paper | 1. If both ends of the OPC drum | |||||
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| Contamination | the papers periodi- | periodically. | are contaminated with toner: | |||||
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| cally. | (1)Check the cycle of the | Check the life of the developer. | ||
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| falling of the toner. |
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| • Contaminated with | (2)Check the appearance of |
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| toner on prints part- | both ends of the developer |
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| ly or over the whole | OPC drum. |
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| surface. |
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| 2.The center of the printed mat- | 2. Check whether it could be recy- | ||
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| ter is contaminated with toner. | cled. | ||
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| (1)Check whether foreign sub- |
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| stances or toner are stuck |
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| to the terminal (contact |
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| point) of the developer. |
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| (2)Check whether the state of |
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| the terminal assembly is |
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| normal. |
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| 3. If it cannot be recycled: | ||
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| Replace the developer. | ||
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| Service Manual | ||
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