Operation; Iu Life Control - Develop QC 2235 Plus Service Manual

Imaging Unit section (IU section)
5.3

Operation

5.3.1

IU Life control

• Each IU has EEPROM that detects a new IU and keeps track of the service life of the IU.
A. New IU detection
• new IU is detected when 24 V is turned ON as the Power Switch is turned OFF and ON
or the Front Door is opened and closed. If a new IU is not detected the machine does not
execute image stabilization sequence.
• When a new IU is detected, an ATDC adjustment sequence is carried out.
Operation when a new IU is detected
Transfer Belt
is retracted
Operation when a new IU is not detected
Transfer Belt
is retracted
B. When life is reached
• The IU Life Counter is used to keep track of IU life.
• When the life value is reached, a warning message is given on the screen. When a pre-
determined number of printed pages are produced after the life value has been reached,
the machine inhibits the initiation of a new print cycle with a message prompting the user
to replace the IU given on the screen.
When a life value is reached
• The warning screen and IU replacement screen change when the settings are changed
for "Display PM Parts Lifetime" and "Unit Change" available from the Tech. Rep. mode
and "IU Life Stop Setting" available from the Security mode.
QC 2235plus Theory of Operation Ver.1.0 Feb. 2004
ATDC
Transfer Belt
automatic
cleaning
adjustment
1st image
Transfer Belt
transfer/ATVC
cleaning
adjustment
4036ma2058e0
2-14
1st image
Image sta-
transfer/ATVC
bilization
adjustment
Image sta-
bilization
4036ma2133c0
At print stop
4036ma2059e0