4 Close the document sensor unit.

5 Close the upper transport unit. (See page 4-2)

Document detection sensor

Clean the document detection sensor as follows:

 

1

Open the upper transport

 

 

unit. (See page 4-2)

 

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 4-2)

8-8

M3099GX/GH OEM Manual