01/02
4-111
8825/8830 Printer
ADJ 9.3
Repairs and Adjustments
ADJ 9.3 Image Density
Purpose
The purpose is to set the toner concentration to obtain good print quality as specified in Section
3 of this Service Manual.
NOTE: Electrostatic Series ADJ 9.2 must be performed before the Image Density is adjusted.
Check
1. Enter diagnostics.
2. Enter code [0955] and make one print of Test Pattern #5.
3. Using S.I.R. 495.01 (82P520), evaluate the darkness squares at the lower right center
and the upper left from the lead edge.
4. If the darkness square is not between 1.0 and 1.2, perform the adjustment.
Adjustment
1. Enter diagnostics.
2. ( Figure 1): Enter code [ 0921-4. The following message is displayed.
Figure 1 Message Display
3. Adjust the Image Density Control Point (STD CP X.X) using the Previous / Next but-
tons.
a. Use the Next button to increase the Image Density Control Point (decrease the
Image Density).
b. Use the Previous button to decrease the Image Density Control Point (increase the
Image Density).
c. Press the Enter button in order to store the value in NVM.
d. Press the Exit button two times.
4. Run the Automatic Tone-up / Tone-down Routine [ 0906].
5. Repeat the Check.
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