Actions At Parts Replacement; Mp Pickup Tray Unit; Dc Controller Pcb; Hard Disk - Canon imageRUNNER ADVANCE 4551i Service Manual

Actions at Parts Replacement

MP Pickup Tray Unit

■ Actions after Parts Replacement
1. Load A4R paper in the MP Pickup Tray and slide the paper width guide to fit the paper size.
2. Select service mode as shown below and Press OK key for each. The setting value is registered after the auto
adjustment.
• COPIER > ADJUST > CST-ADJ > MF-A4R
• COPIER > ADJUST > CST-ADJ > MF-A6R
• COPIER > ADJUST > CST-ADJ > MF-A4
3. Write each setting value on the service label.
• COPIER > ADJUST > CST-ADJ > MF-A4R
• COPIER > ADJUST > CST-ADJ > MF-A6R
• COPIER > ADJUST > CST-ADJ > MF-A4

DC Controller PCB

How to Replace the Parts:
■ Before Parts Replacement
CAUTION:
When replacing the DC Controller PCB, be sure to use a new one. Do not use the DC Controller PCB which was used with
another machine.
1. Execute the following service mode to output setting values for just in case of restoration failure of backup data.
COPIER > FUNCTION > MISC-P > P-PRINT
2. Execute the following service mode to back up the service mode setting values.
(Lv.2) COPIER > FUNCTION > SYSTEM > DSRAMBUP
During execution, "ACTIVE" flashes in the status column of the service mode.
It takes approx. 2 minutes. Upon success, [OK!] is displayed in the status column.
3. After confirming that [OK!] is displayed in the status column of the service mode, turn OFF the power of the machine.
■ Works During Parts Replacement
1. When the setting value data is backed up before parts replacement, execute the following service mode to restore
the backed-up setting value data.
(Lv.2) COPIER > FUNCTION > SYSTEM > DSRAMRES
During execution, "ACTIVE" flashes in the status column of the service mode.
It takes approx. 2 minutes. Upon success, [OK!] is displayed in the status column.
2. When setting values cannot be backed up before replacement or when the backed-up data cannot be restored in
this step due to reasons such as damage of the DC Controller PCB, enter the values of each service mode item
written on the service label or P-PRINT before parts replacement.

Hard Disk

How to Replace the Parts:
■ Before Replacing
1. Back up the necessary data based on the table shown below.
"Removing the DC Controller PCB" on page 293
"Removing the HDD" on page 244
325
5. Adjustment