Canon imageRUNNER 2545, Service Manual

Page: 181 / 362

5
5
5-5
5-5
Adjustment > Adjustment when replacing parts > Laser Exposure System > Action to Take after Replacing the Laser Scanner Unit
Adjustment > Adjustment when replacing parts > Laser Exposure System > Action to Take after Replacing the Laser Scanner Unit
Controller System
■ Action to Take after Replacing theMain Controller PCB
After replacing the main controller PCB with a new one, take the following action:
•
Download the latest firmware with the UST.
• Enter all values recorded on the service label affixed to the rear cover.
■ Action to Take when Replacing the DC Controller PCB
Before Replacement/RAM Clearing
Print the service data list in the service mode.
REPORT > REPORT OUTPUT > SERVICE DATA LIST
Action to Take after Replacement/RAM Clearing
1) Clear the DC controller settings and counters.
Enter the service mode, and Then select the following:
CLEAR > ENGINE > ENGINE BKRAMCLK (Clearing of the RAM on the DC controller
PCB)
2) Turn OFF and then ON the main power switch. (Turning OFF/ON the main power switch
clears the RAM.)
3) If uploading of backup data fails before replacement due to the damage to the DC
controller PCB, enter the values of service mode items recorded on the service label.
Since the values recorded on the service label may be outdated, check the service mode
item list (#SERVICE DATA LIST) printed out in advance, and then enter the latest values.
4) Turn OFF and then ON the main power switch. (Turning OFF/ON the main power switch
allows the values entered for the service mode items to take effect.)
■
Action to Take after Replacing the RAM
CAUTION:
The ADRAM is powered from the secondary battery unit to back up the image memory
even after the main power switch is turned OFF and the power plug is removed from
the outlet.
If the SW3 on the main controller PCB is pressed with the image backed up, the entire
data stored in the memory is cleared. Be sure to output the data stored in the memory
Laser Exposure System
■ Action to Take after Replacing the Laser Scanner Unit
When replacing the laser unit, enter the values recorded on the label affixed to the laser unit
to be replaced for the following in the service mode:
145 146 147 136 148 149 150
SW No.
•
PRINT > Bitswitch > 136 Laser horizontal scanning direction write position adjustment(A)
• PRINT > Bitswitch > 145 Laser horizontal scanning direction magnification ratio
adjustment(A-B)
• PRINT > Bitswitch > 146 Laser horizontal scanning direction magnification ratio
adjustment(A-C)
• PRINT > Bitswitch > 147 Laser horizontal scanning direction magnification ratio
adjustment(A-D)
• PRINT > Bitswitch > 148 Laser horizontal scanning direction write position adjustment(A-B)
•
PRINT > Bitswitch > 149 Laser horizontal scanning direction write position adjustment(A-C)
• PRINT > Bitswitch > 150 Laser horizontal scanning direction write position adjustment(A-D)
F-5-3