Canon imageRUNNER 1750 Series Service Manual page 284

● 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%)
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Service Mode > Details of Service Mode > #PRINT > List of Functions
8 Service Mode > Details of Service Mode > #PRINT > List of Functions
● 134: Laser light intensity adjustment (normal speed)
Use this mode when reproductivity of thin lines is poor or a problem occurs to laser power (light
intensity).
Initial value: 212 set as a central value
To increase (strengthen) the light intensity, set the value larger than the initial value.
To decrease (weaken) the light intensity, set the value smaller than the initial value.
Possible setting range
Initial value: 0 to 255 (actual effective range is 138 to 255) with 212 set as a central value
● 135: Laser light intensity adjustment (low speed)
Use this mode when reproductivity of thin lines is poor or a problem occurs to laser power (light
intensity).
Initial value: 183 set as a central value
To increase (strengthen) the light intensity, set the value larger than the initial value.
To decrease (weaken) the light intensity, set the value smaller than the initial value.
Possible setting range
Initial value: 0 to 255 (actual effective range is 138 to 255) with low speed 183 set as a central
value
● 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.
● 145: Adjustment of the magnification to write image in laser's main
scanning direction (A-B)
Magnification between lasers A and B.
Amount of adjustment of the magnification of laser B of the laser scanner unit. Adjust the
magnification of laser B with reference to that of laser A. If the input value is inappropriate, the
image quality is degraded.
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