Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 527

COPIER> FUNCTION> MISC-R
BWM-DF1 Sampling of B&W front stream read MTF VL
Lv.1 Details The MTF value for the Reader Unit is sometimes displaced from the
factory setting value depending on the condition at transportation/
storage. If the machine is installed without correcting the value, it
may cause an image failure such as moire. Therefore, it is necessary
to readjust the MTF value by reading the MTF adjustment chart at
installation.
When B&W front side stream reading is performed, the controller
performs sampling of the MTF value. This value is set in COPIER>
ADJUST> CCD> MTF2-Mx, MTF2-Sx.
Use case At installation
Adj/set/operate method 1) Set the MTF chart on the ADF.
2) Select the item, and then press OK key.
3) Perform B&W front side stream reading with the MTF chart set on
the ADF. (BWM-DF1)
Display/adj/set range During operation: ACTIVE, When operation finished normally: OK!
Related service mode COPIER> ADJUST> CCD> MTF2-M1 to 12, MTF2-S1 to 12
CLM-DF2 Sampling color back stream read MTF VL
Lv.1 Details The MTF value for the Reader Unit is sometimes displaced from the
factory setting value depending on the condition at transportation/
storage. If the machine is installed without correcting the value, it
may cause an image failure such as moire. Therefore, it is necessary
to readjust the MTF value by reading the MTF adjustment chart at
installation.
When color back side stream reading is performed, the controller
performs sampling of the MTF value. The MTF value is set in MTF-
Mx, MTF-Sx.
Use case At installation
Adj/set/operate method 1) Perform color back side stream reading with the MTF chart set on
the ADF. (CLM-DF2)
2) Set the MTF chart on the ADF.
3) Select the item, and then press OK key.
Display/adj/set range During operation: ACTIVE, When operation finished normally: OK!
Related service mode COPIER> ADJUST> CCD> MTF-M1 to 12, MTF-S1 to 12
COPIER> FUNCTION> MISC-R
BWM-DF2 Sampling B&W back stream read MTF value
Lv.1 Details The MTF value for the Reader Unit is sometimes displaced from the
factory setting value depending on the condition at transportation/
storage. If the machine is installed without correcting the value, it
may cause an image failure such as moire. Therefore, it is necessary
to readjust the MTF value by reading the MTF adjustment chart at
installation.
When B&W back side stream reading is performed, the controller
performs sampling of the MTF value. The MTF value is set in MTF-
Mx, MTF-Sx.
Use case At installation
Adj/set/operate method 1) Perform B&W back side stream reading with the MTF chart set on
the ADF. (BWM-DF2)
2) Set the MTF chart on the ADF.
3) Select the item, and then press OK key.
Display/adj/set range During operation: ACTIVE, When operation finished normally: OK!
Related service mode COPIER> ADJUST> CCD> MTF-M1 to 12, MTF-S1 to 12
CLPLT-EN Color copyboard read MTF VL initial set
Lv.1 Details To return the MTF value for color copyboard reading to the factory
setting value.
Since overwriting is performed with the backup data retained in the
Reader Controller PCB, the MTF value obtained by sampling of the
MTF chart becomes disabled.
When CLM-PLTN is executed, the value is automatically set to 1.
When the value is set to 0, the value adjusted with CLM-PLTN
becomes disabled and returned to the factory setting value.
Use case When returning the MTF value to the initial setting value upon user's
request in case that a sufficient quality level cannot be obtained on
the front side of a color image even performing a fine adjustment
with CLM-TGT after adjusting the MTF value with CLM-PLTN.
Adj/set/operate method Select the item, and then press OK key.
Caution The MTF value obtained by reading the MTF chart becomes
disabled.
Display/adj/set range 0 to 1
0: Factory setting value, 1: Adjustment value at installation
Default value 0
Related service mode COPIER> FUNCTION> MISC-R> CLM-PLTN, CLM-TGT
COPIER> ADJUST> CCD> MTF2-M1 to 12, MTF2-S1 to 12
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