Canon imageRUNNER ADVANCE C5500 Series Service Manual page 830

COPIER > ADJUST > DENS
P-TG-K 2
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Default Value
Additional Functions
Mode
DMAX-K 2
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Default Value
Additional Functions
Mode
REF-K 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
CONT-Y 1
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Unit
Amount of Change per
Unit
Adj of ATR control Bk-color target value
To adjust the offset of the ATR patch target value for Bk.
When the target value determined upon initialization is changed, the TD ratio is also changed.
Fogging and density increase are alleviated when the value is smaller, and carrier adherence is
alleviated when it is larger.
When density failures, fogging, carrier adherence, etc. occur
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 (e.g. COPIER> TEST> PG> TYPE: 16) 4 times.
4) Execute auto gradation adjustment (full adjustment).
Execute the auto gradation adjustment first to increase the density. If you adjust the offset of the
target value, fogging might get worse.
-4 to 4
0
Adjustment/Maintenance> Adjust Image Quality> Auto Adjust Gradation> Full Adjust
Adj D-max ctrl Bk-color dens target VL
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.
The setting is reset when auto gradation adjustment (full adjustment) is executed.
When an image failure occurs due to environment change
1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
Use this item only for the printer models.
-128 to 128
0
Adjustment/Maintenance> Adjust Image Quality> Auto Adjust Gradation> Full Adjust
Bk toner dens target VL entry
To enter the target value of ATR control for the ATR Sensor (Bk).
Be sure to check the value before clearing RAM and enter it again after RAM clear.
When checking the value before RAM clear and re-entering it after RAM clear
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
0 to 255
128
ATR Sensor (Y) control voltage entry
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.
As the value is changed by 1, the control voltage is changed by 0.01 V.
When the backup data is cleared by RAM clear, etc.
Enter the setting value, and then press OK key.
After the setting value is changed, write the changed value in the service label.
0 to 1024
V
0.01
816
8. Service Mode