Canon LBP351 Series, Service Manual

Page: 130 / 191

Controller System
Removing the Controller
Cover
■ Preparation
1. Remove the Right Cover. “ Removing the Right
Cover” on page 117
■ Procedure
1. Remove the Controller Cover [1].
• 11 Screws [2]
• 1 Claw [3]
11x
[2]
[2]
[2]
[2]
[1]
[3]
1x
Removing the Main Controller
PCB
■ Before Replacing the Main
Controller PCB
The following setting values are recorded in the Main
Controller PCB. When the Main Controller PCB is replaced,
these setting values are all returned to the default unless they
are restored.
• User mode setting values
• Service mode setting values
These setting values can be restored by performing backup
by either of the following methods:
Refer to the Backup List for the details of items that are
backed up
“Backup Data” on page 181
• Restoration using the Expansion ROM for servicing and
the Sublog Board (recommended) “Backup/restoration
using the Expansion ROM for servicing and the Sublog
Board” on page 82
• SERVICE MODE > FUNCTION GR. > ECONF >
EXPORT
• SERVICE MODE > FUNCTION GR. > Import/Export
Set. > EXPORT
• Setup > User Maintenance > Import/Export Set. > Export
• RUI > Settings/Registration > Management Settings >
Import/Export > Export
CAUTION :
Perform backup immediately before replacing the Main
Controller.
■ Preparation
1. Remove the Right Cover. “ Removing the Right
Cover” on page 117
2. Remove the Controller Cover. “ Removing the
Controller Cover” on page 123
■ Procedure
1. Remove the Controller Side Plate [1].
• 5 Screws [2]
[1]
[2]
[2]
[2]
5x
5. Parts Replacement and Cleaning
123