After Replacement/Ram Clearing; Removing The Main Controller Pcb; Preparation Before Replacement; Preparation - Canon imageRUNNER 1750 Series Service Manual

4
Disassembly/Assembly > Controller System > Removing the Main Controller PCB > Procedure

■ After Replacement/RAM Clearing

1) When replacing the DC 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) Clear the DC Controller setting value/counter.
Service mode > CLEAR > ENGINE > ENGINE BKRAMCLK
(Clearing RAM of the DC Controller PCB)
3) Turn OFF and then ON the power.
(By turning OFF and then ON the power, RAM clear is executed.)
4) When backup data cannot be uploaded before replacement due to reasons such as
damage of the DC Controller PCB, enter the value of each #PRINT 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.
5) Turn OFF and then ON the main power.
(By turning OFF and then ON the power, the value entered in each service mode item
becomes enabled.)
6) Upon completion of the replacement work, request the user to restore the user data.
4 Disassembly/Assembly > Controller System > Removing the Main Controller PCB > Procedure

Removing the Main Controller PCB

■ Preparation before Replacement

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 Main 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

■ Preparation

1) Remove the Rear Cover.(Refer to page 4-24)
2) Remove the Delivery Outer Cover.(Refer to page 4-29)
3) Remove the Left Cover.(Refer to page 4-27)
4) The Fax unit removes, and the installation is and removes the Fax unit in case of needing.
■ Procedure
1) Remove the Upper Controller Cover [1].
• 7 Screws [2]
• 4 Hooks [3]
[2]
x7
[3]
[2]
[3]
[2]
4-58
[3] [1]
[2]
[3]
F-4-102
4-58