4. PWB (Explained with the SF-1120 and the SF-CM15)
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4 | 5 | 21 |
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No | Name | Description | No | Name | Description |
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1 | Operation PWB A | Operation input, display control | 2 | Operation PWB B | Operation input, display control |
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3 | Blank lamp PWB | Used to control the blank lamp. | 4 | DL PWB | Used to drive the discharge lamp. |
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5 | Optical PWB | AE sensor and lens motor interface | 6 | Process control PWB | Used to sense the toner density. |
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7 | Main PWB | Used to control the body. | 8 | AC circuit PWB | AC power input |
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9 | CSD PWB | Used to sense the body cassette | F | DC circuit PWB | DC power input |
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| size. |
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G | Paper feed power PWB | Used to supply power to drive the | H | Motor control PWB | Used to drive and control the |
| paper feed unit. |
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| paper feed motor and the | |
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| transport motor. |
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I | CSD B PWB | Used to sense the cassette size of | J | Motor sensor PWB | Encoder for 2nd ∼ 4th paper feed |
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| 2nd ∼ 4th tray. |
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| motor |
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K | Tray module PWB | Vertical transport of 2nd ∼ 4th | L | DPPD PWB | Vertical transport of 2nd ∼ 4th tray, |
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| cassette, JAM detection, paper |
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| JAM detection and cover open |
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| feed clutch interface |
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| detection |
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M | ADU PWB | ADU control | N | PID PWB | Manual paper entry detection |
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O | PPD PWB | Body PR roller JAM detection | P | High voltage PWB | Process high voltage, developing |
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| bias voltage supply |
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Q | PDD PWB | Body paper exit section JAM | R | Paper feed I/F PWB | I/F of copier paper detection and |
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| detection, ventilation fan motor |
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| the paper feed clutch. |
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| interface |
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S | Sub DC power PWB | Used to supply power in the power |
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| save mode. (5V is supplied to the |
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| main PWB and the operation |
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| PWB.) |
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3 – 5
