Dell 1600n - Multifunction Laser Printer B/W Service Manual page 49

Precautions
6. Remove the Scaner Harness Cable.
7. Lift the front part of the cover OPE dummy to release
the hook connecting the cover with the scan assem-
bly.
Service Manual
5-6
8. Remove the 3 screws and the connector and remove
the OPE unit as shown below.
9. Remove the 4 screws securing the Scan Upper.
10. Unlatch the Scan Upper securing the Scan Ass'y
Then pull the Scan Upper upward and remove it.
Scan Upper