When Replacing The Adf Reading Glass; Main Controller System; Before Replacing The Main Controller Pcb; After Replacing The Main Controller Pcb - Canon imageRUNNER 1750 Series Service Manual

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Adjustment > Adjustment when Replacing the Parts > Main Controller System > After Replacing the Main Controller PCB
NOTE:
Be sure that size of a paper to be used in the foregoing steps is the one that the ADF
can be read.

■ When Replacing the ADF Reading Glass

1. Follow the following steps to execute the service mode.
SCAN > READER > FUNCTION > CCD > DF-WLVL1/2/3/4 (adjusting the DF white level)
1) Place a sheet of paper which is normally used by the user on the Copyboard Glass, and
execute the following: service mode > SCAN > READER > FUNCTION > CCD > DF-
WLVL1.
The white level during BOOK mode is read (checking the transmission of the glass for
BOOK mode).
2) Place a sheet of paper which is normally used by the user on the ADF, and execute the
following: service mode > SCAN > READER > FUNCTION > CCD > DF-WLVL2.
The white level during DF mode (stream reading) is read (checking the transmission of the
glass for stream reading) (reading both sides of the chart).
3) Place a sheet of paper which is normally used by the user on the Copyboard Glass, and
execute the following: service mode > SCAN > READER > FUNCTION > CCD > DF-
WLVL3.
The white level during BOOK mode is read (checking the transmission of the glass for
BOOK mode).
4) Place a sheet of paper which is normally used by the user on the ADF, and execute the
following: service mode > SCAN > READER > FUNCTION > CCD > DF-WLVL4.
The white level during DF mode (stream reading) is read (checking the transmission of the
glass for stream reading) (reading both sides of the chart).
NOTE:
Be sure that size of a paper to be used in the foregoing steps is the one that the ADF
can be read.
5 Adjustment > Adjustment when Replacing the Parts > Main Controller System > After Replacing the Main Controller PCB

Main Controller System

■ Before Replacing the Main Controller PCB

1) Request the user to backup the user data using remote UI.
2) If possible, output the data of the unprocessed jobs.
After replacing the DC Controller PCB, the data of the unprocessed jobs will be deleted.
3) Print out the list of the service mode setting value in the service mode.
REPORT> REPORT OUTPUT> SERVICE DATA LIST

■ After Replacing the Main Controller PCB

1) When replacing the Main Controller PCB with a new one, be sure to perform the following
procedure.
• Download the latest firmware using UST.
(Refer to Software to Be Upgraded and Upgrading Method)
2) When backup data cannot be uploaded before replacement due to reasons such as
damage of the Main Controller PCB, enter the value of each service mode item described
on the service label.
Since the values recorded on the service label may not be the latest at this time, check the
service mode item list (#SERVICE DATA LIST) printed out in advance, and enter the values
on the list.
3) Turn OFF and then ON the power.
(By turning OFF and then ON the power, the value entered in each service mode item
becomes enabled.)
4) Upon completion of the replacement work, request the user to restore the user data.
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