Canon ImageRunner iR8500 Series Service Manual page 964

Chapter 17
Sub-item
LUT-ADJ2
<LASER>
Sub-item
POWER-A Use it to turn on the laser A.
POWER-B
<DPC>
Sub-item
OFST
<CST>
Sub-item
Use it to execute size auto adjustment for the cassette/manual feed tray.
17-120
COPIER > FUNCTION > CCD
Use it to execute CCD gain detail correction.
- If the density is not corrected using LUT-ADJ (CCD gain simplified correction), execute
this mode using the 10-gradation chart.
<Using the Mode>
1) As shown, place the 10-gradation chart (D-10 Test Sheet) on the copyboard glass.
2) Select the item, and press the OK key.
3) See that the machine executes auto adjustment.
4) See that the machine stops automatically after adjustment.
5) All items under the following are updated; print out a service sheet, and store it away:
COPIER> ADJUST> LAMP, COPIER> ADJUST> CCD.
Place the chart so that the side
with gradation faces down.
COPIER > FUNCTION > LASER
<Using the Mode>
1) Select <POWER-A> to highlight, and press the OK key.
2) See that the laser goes ON, and the display indicates 'Start -> ACTIVE' (flashing);
the upper right of the screen indicates <SERVICE>.
3) See that the message goes OFF automatically in about 60 sec, and the display
indicates 'OK!'.
Use it to turn on the laser B.
<Using the Mode>
1) See the instructions under POWER-A.
COPIER > FUNCTION > DPC
Use it to execute offset adjustment of the potential sensor.
This mode is part of the procedure to be performed when replacing the potential
sensor unit; do not execute it on its own.
<Using the Mode>
1) Select the item, and press the OK key.
2) See that the machine automatically stops after offset adjustment.
COPIER > FUNCTION > CST
Description
T-17-155
Description
T-17-156
Description
T-17-157
Description
Level
2
Level
1
1
Level
1
Level