Scanner Unit 
D115/D116 4-8  SM 
4.4 SCANNER UNIT 
To clean the mirrors and lenses, use a blower brush or wet cotton. 
4.4.1 EXPOSURE GLASS 
To clean the exposure glass, use alcohol or glass cleaner. 
 
1.  Rear cover (
 p.4-3) 
2.  Rear scale, upper right cover (
  p.4-5 "Operation Panel and Upper Covers") 
3. Exposure glass [A] 
Reassembling 
Make sure that the marking on the glass is at the rear left corner, and that the left edge of the 
glass is aligned flush against the support ridge [B] on the frame. 
Adjustment 
When replacing the white plate, perform the "Scan Auto Adjustment" (
 SP4-428-001).