MUTOH Rockhopper II series Maintenance Manual page 68

Step 18 :
Remove the 6 screws and 4 hexagon spacers fixing the Mainboard assembly.
1 = Mainboard assembly
3 = Hexagon spacer
5 = Cooling fan assembly
7 = I/F guide
Step 19 :
Replace the HDD_Extension board assembly.
Step 20 :
Replace the Mainboard assembly.
Step 21 :
Reinstall all parts in the opposite order of the removal procedure.
Step 22 :
Perform media sensor sensitivity adjustment following the "Media sensor sensitivity adjustment"
procedure.
Rockhopper II series printers – Maintenance Manual
2 = HDD_Extension board assembly
4 = Screws (M3x6)
6 = Screws (M3x20) fixing the cooling fan assembly
8 = Screws (M3x8) fixing the I/F guide
69 AP-74065, Rev. 1.2, 27/09/04