Checking The Itb Cleaner Position - Canon iR C6800 Series Service Manual

Chapter 7

7.8.5 Checking the ITB Cleaner Position

0003-1182
The machine runs a home position search to locate the ITB cleaner. The DC controller checks the location with
reference to the output of the ITB cleaner home position sensor (PS23).
When the power is turned on or the front cover is opened/closed, the DC controller checks to find out if the home
position flag attached to the drive shaft of the ITB cleaner shift motor (M21) blocks M23.
DC-CON
J1108A
M21
PS23
[2]
[1]
Engagement(PS23 output="1") Disengagement(PS23 output="0")
[1] [1]
[2]
[2]
PS23
PS23
F-7-53
1 ITB cleaner
2 ITB cleaner home position flag
PS23: ITB cleaner home position sensor
M21: ITB cleaner shift motor
DC CON: DC controller
E078 0001 (ITB cleaner shift motor error)
indicates that the ITB cleaner remains locked in position (PS23=1) 5 sec after the ITB cleaner shift motor (M21) is
started.
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