Canon imageRUNNER 2520 Series, Service Manual, Page: 275 / 402

● 063: Temperature adjustment UP/DOWN mode. (For rough paper)
The temperature adjustment offset relative to the target fixing temperature of thick paper can be changed in steps of 3˚C. Use
this parameter when the fixing performance is low or when it is necessary to prevent the paper from slipping or being curled.
Thick paper: Thick paper mode, thick paper H mode, bond mode
0 - 2: +15˚C
3 - 11: +12 to -15˚C (in steps of 3˚C)
12 - 14: -15˚C
● 064: Mode for preventing the temperature rise of the end
User this parameter to reduce the frequency of entering the throughput down mode, suppress edge temperature rise, or prevent
soiling due to the high temperature offset.
Add/subtract the threshold of the difference in detection temperature between the sub thermistor 1 (2) that starts the full speed
operation of the end cooling fan and the sub thermistor 1 (2) that starts the down sequence to/from default threshold temperature.
0 - 4: +20 to -20˚C (in steps of 10˚C)
● 065: Mode for reducing sand image
Set when sand image *1 has occurred on the print image.
Restraining the scatter of the toner by increasing the electric current of the AC electrification; the sand image could be reduced.
Sand image *1: Multiple black dots and white dots appear on half tone. Or multiple black dots appear on white background.
0: Normal.
1 to 3: Reducing mode. (Same operation to set 1 to 3)
2: Make the print density lower. Set the initial rotation time for fixing to 3 seconds. Does not do it if the initial rotation elongation
time has been set to 3 seconds or longer in another service mode.
● 066:Temperature/ Humidity sensor fixed mode
Changing to high-pressure environment by using the temperature/ humidity sensor.
But when there is an image trouble at the point of changing the environment, fix the temperature and the humidity and do not
allow the change of the high-pressure output.
0: Normal.
1: Fixed environment of LL. (Temperature of 18 deg C and humidity of 20%)
2. Fixed environment of NN. (Temperature of 18-28 deg C and humidity of 20-75%)
3. Fixed environment of HH. (Temperature of 28 deg C and humidity of 80%)
● 136: Adjustment of the point to start writing in laser's main scanning direction (A)
When replacing the laser unit, enter the unit-specific delay value shown on the label affixed to the unit.
● 140: Left-end registration adjustment (double-sided small)
Adjust the left-end registration margin needed when the duplex feeding unit picks up paper (small paper). Incrementing the value
by 1 increases the left-end margin of the image by 0.1 mm.
● 141: Left-end registration adjustment (double-sided large)
Adjust the left-end registration margin needed when the duplex feeding unit picks up paper (large paper). Incrementing the value
by 1 increases the left-end margin of the image by 0.1 mm.
● 142: Adjustment of margin at leading edge at normal speed (230mm/ sec)
Adjust the margin at the leading edge (registration roller clutch ON timing) at normal speed.
Adjust the leading-edge registration margin needed at pickup. Increasing the value makes the margin at the leading edge of the
copy larger.
● 143: Adjustment of margin at leading edge at half speed (137mm/sec)
Adjust the margin at the leading edge (registration roller clutch ON timing) at half speed.
Adjust the leading-edge registration margin needed at pickup (large paper).
Increasing the value makes the margin at the leading edge of the copy larger.
*This mode is effective only when paper is fed from the manual feed tray of iR2545/2535.
● 144: Laser trail edge OFF adjustment
Laser trail edge OFF adjustment (input only).
8. Service Mode
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