![](/images/new-backgrounds/1206338/206338159x1.webp)
4. Replacement and Adjustment
USB Host Board
1. Left cover ( p.24)
4
2. USB host board [A] ( x 2,
x 1)
PSU
1.Pull out the standard paper tray.
2.Front cover ( p.23)
3.Left cover ( p.24)
4.Rear cover ( p.27)
5.Right cover ( p.28)
6.Scanner unit ( p.40)
7.Top cover ( p.29)
8.ECB ( p.74)
9.Controller board bracket ( p.77)
10.Drive unit ( p.55 "Paper Feed Clutch")
78