Canon imageRUNNER ADVANCE C5051 Series Service Manual page 889

COPIER > OPTION > IMG-RDR
DF2DSTL1 Adj Bk line crrct lvl:ppr intvl,bck,DADF
Lv.1 Details To adjust the black line correction level with dust detection correction
control that is executed by the Scanner Unit (for back side) in DADF
mode.
Increase the value when black lines appear. As the value is larger,
the small dust is more likely detected.
Use case - When black line appears due to dust
- Upon user's request
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution When the value is too small, black lines may appear on the image.
Display/adj/set range 0 to 255
0: OFF
Default value 200
Related service mode COPIER> OPTION> IMG-RDR> DF2DSTL2
DF2DSTL2 Adj DADF dust dtct level at job end:bck
Lv.1 Details To adjust dust detection level with dust detection correction control
that is executed by the Scanner Unit (for back side) after the job is
completed in DADF mode.
Reduce the value in the case of frequent display of cleaning
instruction at the time of dust detection. As the value is smaller, dust
is less detected.
Use case Upon user's request
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution If the value is too large, the cleaning instruction screen may appear
too often because even small dust particles that do not appear on
the image are detected.
Display/adj/set range 0 to 255
0: OFF
Default value 200
Related service mode COPIER> OPTION> IMG-RDR> DF2DSTL1
8
Service Mode > COPIER > OPTION > IMG-MCON
T-8-55
8 Service Mode > COPIER > OPTION > IMG-MCON
■ IMG-MCON
COPIER > OPTION > IMG-MCON
PASCAL Use/no use of auto gradation adj data
Lv.1 Details To set to use/not to use the gradation adjustment data gamma LUT
that is generated by auto gradation adjustment (full/quick adjustment)
control.
Selection is available as to whether to use gamma LUT at the time of
image formation.
Use case When PASCAL-related failure occurs/when identifying the cause of
PASCAL-related failure
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 0 to 3
0: Initial LUT is used. (Auto gradation adjustment is not used.)
1: Auto gradation adjustment is used.
2 to 3: Not used
Default value 1
SCR-SLCT Halftone process in Photo Printout mode
Lv.2 Details To set halftone process (error diffusion, screen 2 types) in Photo
Printout mode when making a copy.
Change the setting if the copy image has a problem with the initial
setting (Low screen ruling).
Select 0 (error diffusion) in the case of moire (suitable for character
reproduction).
Select 2 (High screen ruling) in the case of rough dots.
Use case When moire image or rough dots occurs on copy image
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 0 to 2
0: Error diffusion, 1: Low screen ruling, 2: High screen ruling
Default value 1
TMC-SLCT Setting of error diffusion coefficient
Lv.2 Details To set coefficient to be used for error diffusion process.
Specify according to the level of granularity and dot stability.
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 0 to 2
0: Small granularity/low dot stability
1: Small granularity/low dot stability (color mode), Large granularity/
high dot stability (black mode)
2: Large granularity/high dot stability
Default value 2
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