Troubleshooting
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| Fault | Signs | Cause & Check | Solution | |
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| White Black spot | • Light or dark black | 1. If light or dark periodical black | 1. In case of 1 above - | ||
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| dots on the image | dots occur, this is because the | Run OPC Cleaning Mode Print |
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| Digital Printer |
| occur periodically. | developer rollers are contami- | |
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| nated with foreign substance | Especially check foreign sub- | |
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| Digital Printer |
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| • White spots occur | or paper particles. | stance on the OPC surface, then | |
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| Digital Printer |
| in the image period- | (1)38.5mm interval : Charged | remove them with a clean gauze |
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| Digital Printer |
| ically. | roller | moistened with IPA(Isopropyl |
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| Digital Printer |
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| (2)96mm interval : OPC cycle | Alcohol) not to damage OPC if |
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| necessary. | |
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| 2. If white spots occur in a black | Never use usual alcohol. |
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| 2. In case of 2 | |
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| image at intervals of 96mm, or | |
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| If they are not disappeared by | |
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| black spots occur elsewhere, | |
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| running OPC Cleaning Mode | |
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| the OPC drum is damaged or | |
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| Print | |
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| foreign substance is stuck to | |
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| : at intervals of 38.5mm - Replace | |
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| the surface. | |
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| the developer. | |
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| : at intervals of 96mm - Remove |
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| foreign substance. |
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| : Broken image - Replace the |
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| developer according to care- |
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| lessness. |
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| 3. If a black and white or graphic | 3. In case of 3 - Exchange the |
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| image is partially broken at | transfer roller because the life of |
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| irregular intervals, the transfer | the transfer roller in use has been |
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| roller's life has been expired or | expired. (Check the transfer volt- |
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| the transfer voltage is abnor- | age and readjust if different.) |
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| mal. |
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| Recycled product | • Poor appearance of | 1. Poor appearance of the devel- | 1. In case of 1 - | ||
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| the developer. | oper. | (1)If there is an evidence of disas- |
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| (1)Check the damage to label | sembling the developer. |
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| • Unclean and rough | and whether different materi- | (2)If materials other than normal |
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| printouts. | als are used. | parts of the developer are |
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| (2)Check the appearance of | added or substituted. |
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| • Bad background in | parts of the developer, such |
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| the image. | as frame, hopper. |
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| 2. Unclean and rough printouts. | 2. In case of 2 - If there are any |
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| (1)Check whether foreign sub- | abnormals in connection with the |
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| stance or toner are stuck to | situation of 1. |
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| the terminal (contact point) of | (1)It occurs when the developer |
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| the developer. | is recycled over 2 times. |
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| (2)Check whether the state of | (2)If toner nearly being expired |
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| the terminal assembly is nor- | are collected to use, it is |
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| mal. | judged as the recycled devel- |
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| oper. |
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Samsung Electronics |