Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 430

COPIER> ADJUST> DENS
LLMT-PTC Toner Dens Sensr(C)dens crrct lowr limit
Lv.2 Details To adjust the lower limit of the target density (T/D ratio) adjustment of
the Toner Density Sensor (C).
If the lower limit is smaller, the density increase can be prevented in
the case of high duty because QM down of developer is restrained,
but carrier adherence gets worse.
The value is returned to 0 if COPIER> FUNCTION> INSTALL>
INISET-C/-4 is executed upon replacement of the Developing
Assembly.
Use case • When adjusting the toner density (T/D ratio) upon occurrence of
density failures, fogging, carrier adherence, and scattering, etc.
• When analyzing the cause of a problem
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 -2 to 2
-2: +2.0%, -1: +1.0%, 0: +/-0%, 1: -1.0%, 2: -2.0%
Default value 0
Related service mode COPIER> FUNCTION> INSTALL> INISET-C/-4
DMAX-Y Adj D-max ctrl Y color dens target VL
Lv.2 Details An image failure might occur because the density target value of the
D-max control becomes out of the setting table due to environment
change.
Adjust the offset of the yellow density target value of D-max control.
The offset is reset when D-max control (Full Adjust) is executed.
Use case When any image failure occurs due to environment change
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
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Caution • Do not use this at the normal service.
• This is limited for the use of printer model.
Display/adj/set range -30 to 30
Default value 0
DMAX-M Adj D-max ctrl M color dens target VL
Lv.2 Details An image failure might occur because the density target value of the
D-max control becomes out of the setting table due to environment
change.
Adjust the offset of the magenta density target value of D-max
control.
The offset is reset when D-max control (Full Adjust) is executed.
Use case When any image failure occurs due to environment change
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution • Do not use this at the normal service.
• This is limited for the use of printer model.
Display/adj/set range -30 to 30
Default value 0
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COPIER> ADJUST> DENS
DMAX-C Adj D-max ctrl C color dens target VL
Lv.2 Details An image failure might occur because the density target value of the
D-max control becomes out of the setting table due to environment
change.
Adjust the offset of the cyan density target value of D-max control.
The offset is reset when D-max control (Full Adjust) is executed.
Use case When any image failure occurs due to environment change
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution • Do not use this at the normal service.
• This is limited for the use of printer model.
Display/adj/set range -30 to 30
Default value 0
P-TG-Y Adj of Y color ATR patch dens target VL
Lv.2 Details To adjust the offset of the ATR patch target value for Y.
When the target value determined upon initialization is changed, the
T/D ratio is also changed.
Fogging and density increase are alleviated when the value is
smaller, and carrier adherence is alleviated when it is larger.
Use case When density failures, fogging, and carrier adherence, etc. occur
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Turn OFF/ON the main power switch.
3) Make 50 prints of approx. 10% image ratio (ex. COPIER> TEST>
PG> TYPE: 16) 4 times.
4) Execute Auto Adjust Gradation> Full Adjust.
Caution Execute the Auto Adjust Gradation first to increase the density. If you
adjust the offset of the target value, fogging might get worse.
Display/adj/set range -2 to 2
-2: -0.5%, -1: -1.0%, 0: +/-0%, 1: +0.5%, 2: +1.0%
Default value 0
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation> Full Adjust