Installation manual

1 OF 1
MFP
TT-20395
Models:
MX-M623N/MX-M753N/MX-M623U/MX-M753U
Priority:
Medium
Date:
February 2012
Subject:
MFP Calibration Checklist
Symptom:
Image quality problems occur
Cause:
MFP is out of adjustment
Solution:
Refer to the following checklist
In order for calibration to be accurate, the following adjustments should be performed or checked at Install
or PM. (Refer to the adjustment section of the Service Manual for details):
1. ADJ 1-A Confirm Doctor Blade gap is in specification (Must be .040mm to .046mm).
2. ADJ 1-B Confirm Main Pole position is in specification (Must be 18.5mm to 19.5mm).
3. ADJ 1-C Toner Density (Simulation 25-2 at install or PM)
 Door must be left open to prevent change in DV/toner mixture until ready to press
EXECUTE.
 Must remove all DV material with vacuum before installing new DV at PM.
 Must use CA key to lock in values when Simulation 25-2 is completed.
4. ADJ 2A Main Charge Grid Voltage (Simulation 8-2) Measure at CN2 pin 3.
5. ADJ 2B DV Bias Voltage (Simulation 8-1) Measure at CN2 pin 7.
6. ADJ 2C Transfer Current (Simulation 8-6) – Confirm values in Simulation 8-6 are set to default.
7. ADJ 3 Image Skew adjustment (Black) Simulation 64-2
8. ADJ 9A CCD calibration OC MODE
 63-3 using SIT chart (UKOG-0280FCZ1) is more accurate, and is recommended.
 63-5 set to default if SIT chart is not available
9. ADJ 9B CCD Calibration DSPF MODE
 63-3 using SIT chart (UKOG-0280FCZ1) is more accurate, and is recommended.
 63-5 set to default if SIT chart is not available
10. ADJ 9C Shading Adjustment - use the shading adjustment sheet UKOG-0333FCZZ
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