03/2003 
4-145
8850/ 510DP 
ADJ 7.1 , ADJ 8.1
Repairs and Adjustments
Adjustment
1. (Figure 3) Adjust the Chain tension.
Figure 3 Adjusting the Chain Tension
2. Perform the Check again.
ADJ 8.1 Vertical Magnification
Purpose
WARNING
The purpose is to calibrate the printer to produce the correct length images for each
media type.
Check
1. Enter diagnostics.
2. Enter code [0955] and make three 1200 mm prints of Test Pattern #7. Select the last of
the three test prints.
3. Allow the print to cool for five minutes.
4. (Figure 1): Check that 60 blocks in the paper feed direction measure 975 mm +/- 5.0 mm.
Figure 1 Checking the Vertical Magnification
Adjustment
1. (Figure 2): Enter code [0602] in order to adjust the Vertical Magnification. The following
message will be displayed.
1
Loosen the two screws 
securing the Media Roll 
Drive Motor
2
Move the Motor as indicated 
by the arrow to adjust the 
Tens ion