4 Close the document sensor unit.
5 Close the upper transport unit. (See page
Document detection sensor
Clean the document detection sensor as follows:
| 1 | Open the upper transport |
|
| unit. (See page |
| 2 | Hold the handles of the |
|
| document sensor unit and |
|
| keep the unit open. |
| 3 | Wipe the two sensor |
|
| windows (a and b) with a |
|
| dry cloth or cloth soaked in |
|
| isopropyl alcohol. |
a | 4 | Close the document sensor |
| b | unit. |
|
| |
| 5 | Close the upper transport |
|
| unit. (See page |
M3099GX/GH OEM Manual |