Canon i-SENSYS MF744Cdw

Action When Hue Differs between the Front and Back Sides of the Output Image at Duplex Copy (For the duplex scanning ADF model)

Overview

If hue differs between the front and back sides of the output image when making a copy of 2-sided original, perform color difference correction on both front and back sides.

Field Remedy

Follow the procedure shown below to perform color difference correction.

1. Execute full adjustment of auto gradation adjustment. (Adjustment of density of the printed output)
   Adjustment/Maintenance > Adjust Image Quality > Auto Adjust Gradation > Full Adjust
2. Output PG-TYPE 26 from test mode in service mode.
   • TESTMODE > PRINT > PG-TYPE
3. Read the chart using the duplex scanning model (front side).
   Place the chart PG-TYPE 26 output in test mode on the ADF with the printed side facing up and execute the following service mode.
   • COPIER > FUNCTION > MISC-R > 1PSCLB-A
4. Read the chart using the duplex scanning model (back side).
   Place the chart PG-TYPE 26 output in test mode on the ADF with the printed side facing down and execute the following service mode.
   • COPIER > FUNCTION > MISC-R > 1PSCLB-B
5. Judgment
   Check that the following service mode values are 1 (reading succeeded).
   • COPIER > DISPLAY > CCD > 1P-ERR-A
   • COPIER > DISPLAY > CCD > 1P-ERR-B
   If any value other than 1 (reading succeeded) is displayed, turn OFF and then ON the power of the host machine and read the chart again.