Adj 9.3 Image Density - Xerox 8830 Service Manual

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 1.0, perform the
adjustment.
8830
Adjustment
1. Enter diagnostics.
2. Enter code [0921-4]. The following message is
displayed.
09 21 4 STD CP X.X, RH CP XX VOLTS
SENSOR READING XX.X VOLTS
3. Adjust the Image Density Control Point (STD CP
X.X) using the Previous / Next buttons.
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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ADJ 9.3