4-2-1 Paper feed control
The following diagram shows interconnectivity of the feeding system components including the sensors and rollers. The engine board provides the signals in conjunction with the electrophotography process that is driven by the main board.
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| Toner container |
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| Registration | |
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| Developing |
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| MP tray |
| roller |
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| Drum |
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| Fuser unit |
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Exit | 7 |
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sensor |
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| Power supply board |
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| Bias board |
| MOTORN |
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| Main motor |
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| RESDRN |
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| MPFDRN | FEDDRN | |||||||||
| EXITN |
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| Engine board |
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| 1 MP feed roller | 2 Feed roller | 3 Lower registration roller |
| 4 Upper registration roller |
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| 5 Transfer roller | 6 Heat roller | 7 Lower exit roller | 8 Upper exit roller |
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