Canon iR7086, Service Manual

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Chapter 7
7-9
F-7-12
SERVICE MODE:
- COPIER> OPTION> BODY> OHP-CNT (enabling/disabling potential control for transparency mode)
1: uses the target value obtained as a result of potential control for transparency mode executed at time of transparency mode operation. (default)
0: does not execute potential control for transparency mode.
F-7-13
7.4.9 Target Potential Correction in Each Mode
0010-8048
iR7105 / iR7095 / iR7086
For the following, the machine corrects the laser power/developing bias determined as part of potential control, using the result as the target value for the individual
modes:
T-7-2
1. Adjusting the Density during Printing (PDL input)
Purpose Correction
Density adjustment during printing
(PDL input) To enable reproduction of fine lines suited to the needs of the user
(PDF data from a PC). Corrects the laser power/developing bias to suit the F value
setting.
Density adjustment during printing
(scanner input) To enable a specific level of density suited to the needs of the
user. Corrects the laser power/developing bias to suit the F value
setting
WMUPR
WMUP STBY
193
198
Potential sensor
Laser
Grid bias
Vg
Pw
Pwohp
Pwohp
Potential control sequence started
Potential control for
transparency mode started
VD VL VLohp
Selected potential
Vg
Pw
Vdc
Uses the target VLohp for transparency mode
to execute potential control sequence.
Laser power for transparency
mode determined
VD
correction value VL
correction value
Vdc
correction value
-40V
-130V
-110V
COPIER > OPTION > BODY > OHP-CNT
Set
Main power switch
OFF/ON
Potential control
sequence started
Transparency mode
potential control