Canon iR7086 Series Service Manual page 506

Chapter 14
14-6
*: model w/ DADF-Q1 (non-Japanese model: iR7105/7095; Japanese model: iR7105/7095/7086N)
**: model w/ DADF-M1 (non-Japanese model: iR7086)
<Checking the Solid Black
Make a copy of
the NA3 Chart in text mode. Is
E
gray scale No. 1 (solid black)
too light?
YES
Check the life of the
scanning lamp; if it has
reached the end of its
life, replace it.
Clean the following:
1. Mirrors
2. Lens
3. Standard white plate
4. Scanning lamp
5. Reflecting plate
Execute potential control
Turn off and then on the power switch,
and make a copy.
Execute the following service mode item:
1) COPIER>FUNCTION>CCD>CCD-ADJ
2) COPIER>FUNCTION>CCD>LUT-ADJ**
Is the density of
gray scale No. 1 (solid black)
too low (light)?
YES
Perform the instructions under
"Checking the Solid Black Density"
for the printer unit.
Density>
<Checking for Fogging>
Make a copy of
NO
the NA3 Chart in text mode.
Is the white background
foggy?
NO
G
Make a copy of the
NA3 Chart in AE mode. Is the
output foggy?
NO
NO
F-14-8
YES
F
YES
H
J
K
L