Canon imageRUNNER ADVANCE C3325 Series Service Manual page 615

COPIER>ADJUST>DENS
P-TG-K Adj of Bk-color ATR patch dens target VL
Lv.2 Details To adjust the offset of the Bk-color ATR patch density target value.
When the target value determined upon initialization of the Developing
Unit is changed, the TD ratio is also changed.
Decrease the value when density increase occurs, and increase the
value when fogging occurs.
Use case When an image failure (density failure, fogging, carrier adherence,
etc.) occurs
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Make 50 prints of approx. 10% image ratio (e.g. COPIER> TEST>
PG> TYPE: 16) 4 times.
3) Execute auto gradation adjustment (full adjustment).
Caution Execute the auto gradation adjustment first to increase the density. If
the target value is changed, fogging may get worse.
Display/adj/set range -10 to 10
Unit 10
Default value 0
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation> Full Adjust
DMAX-K Adj D-max ctrl Bk-color dens target VL
Lv.2 Details An image failure may occur because the density target value of D-max
control becomes out of the setting table due to environment change.
Adjust the offset of the Bk-color density target value of D-max control.
Use case When an image failure occurs due to environment change
Adj/set/operate method Enter the setting value (switch negative/positive by -/+ key) and press
OK key.
Display/adj/set range -128 to 128
Default value 0
HLMT-PTK Adj Bk-clr toner dens tgt VL upper limit
Lv.2 Details To adjust the upper limit of the toner density target value of the Toner
Density Sensor (Bk).
As the value is incremented by 1, the upper limit is increased by 0.5%.
Increase the value when a density failure/coarseness occurs, and
decrease the value when fogging/scattering occurs.
In principle, the value should be the same as that of LLMT-PTK.
Use case When an image failure (density failure, coarseness, fogging, carrier
adherence, scattering, etc.) occurs
Adj/set/operate method Enter the setting value (switch negative/positive by -/+ key) and press
OK key.
Caution Take necessary action in accordance with the instructions from the
Quality Support Division.
Display/adj/set range -4 to 4
Unit 0.5 %
Default value 0
Related service mode COPIER> ADJUST> DENS> LLMT-PTK
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Service Mode > COPIER > ADJUST > DENS
8 Service Mode > COPIER > ADJUST > DENS
COPIER>ADJUST>DENS
LLMT-PTK Adj Bk-clr toner dens tgt VL lower limit
Lv.2 Details To adjust the lower limit of the toner density target value of the Toner
Density Sensor (Bk).
As the value is incremented by 1, the lower limit is increased by 0.5%.
Increase the value when a density failure/coarseness occurs, and
decrease the value when fogging/scattering occurs.
In principle, the value should be the same as that of HLMT-PTK.
Use case When an image failure (density failure, coarseness, fogging, carrier
adherence, scattering, etc.) occurs
Adj/set/operate method Enter the setting value (switch negative/positive by -/+ key) and press
OK key.
Caution Take necessary action in accordance with the instructions from the
Quality Support Division.
Display/adj/set range -4 to 4
Unit 0.5 %
Default value 0
Related service mode COPIER> ADJUST> DENS> HLMT-PTK
REF-K Bk-color toner density target VL entry
Lv.2 Details To enter the target value of the ATR Sensor (Bk) of ATR control after
replacement of the DC Controller PCB/clearing of RAM data.
Use case When checking the value before replacement of the DC Controller
PCB/clearing of RAM data and then re-entering the value after clearing
of the data
Adj/set/operate method Enter the setting value, and then press OK key.
Display/adj/set range 0 to 255
Default value 120 (It may vary by initialization of the Developing Unit when clearing
RAM data.)
Related service mode COPIER> FUNCTION> INSTALL> INISET-K/4
CONT-Y ATR Sensor (Y) control voltage entry
Lv.1 Details To enter the density detection control voltage of the ATR Sensor (Y).
When replacing the DC Controller PCB/clearing RAM data, enter the
value of service label.
Use case When checking the value before replacement of the DC Controller
PCB/clearing of RAM data and then re-entering the value after clearing
of the data
Adj/set/operate method Enter the setting value, and then press OK key.
Caution The value changes if the Developing Unit is initialized (INISET-Y/4).
Display/adj/set range 0 to 255
Default value 120 (It may vary by initialization of the Developing Unit when clearing
RAM data.)
Related service mode COPIER> FUNCTION> INSTALL> INISET-Y/4
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