Canon imagePRESS 1135 Series Service Manual page 975

COPIER> DISPLAY> DPOT
VDT-BK Dark area target VL in Bk solid area
Lv.2 Details Displaying the target value for dark area potential Vd in solid black
area
Use case To check if the potential VD in solid black area reaches the target
value while formulating image.
Adj/set/operate method N/A (display only)
Display/adjust/set range 490 to 510
Unit V
Appropriate target value 490 to 510
Related service mode COPIER> DISPLAY> DPOT> VDM
VCONT-N Dspl of developing contrast: qualityPP
Lv.1 Details Displaying developing contrast Vcont when formulating image with
high quality paper group.
In the case of too dark/light image density, checking Vcont can
determine whether it's due to failure of potential control or D-max
control, or hard disc fault.
Use case To check Vcont when the image density is too dark or too light.
Adj/set/operate method N/A (display only)
Display/adjust/set range 0 to 600
Unit V
Appropriate target value 70 to 250
Related service mode COPIER> DISPLAY> DPOT> VBACK-N, LPWR-N, VDC-N
Supplement/memo • High quality paper group: high quality paper/ recycled paper/
embossed paper/ label/ postcard/ cotton
• "N" indicates Normal
VCONT-S Dspl of developing contrast: coatedPP
Lv.1 Details Displaying developing contrast Vcont when formulating image with
coated paper group.
In the case of too dark/light image density, checking Vcont can
determine whether it's due to failure of potential control or D-max
control, or hard disc fault.
Use case To check Vcont when the image density is too dark or too light.
Adj/set/operate method N/A (display only)
Display/adjust/set range 0 to 600
Unit V
Appropriate target value 70 to 250
Related service mode COPIER> DISPLAY> DPOT> VBACK-S, LPWR-S, VDC-S
Supplement/memo • Coated paper group: 1-sided coated paper/ 2-sided coated paper/
vellum/ film
• "S" indicates Special
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Service Mode > COPIER > DISPLAY (Status Display Mode) > DPOT
8 Service Mode > COPIER > DISPLAY (Status Display Mode) > DPOT
COPIER> DISPLAY> DPOT
VCONT-T Dspl of developing contrast: thinPP
Lv.1 Details Displaying developing contrast Vcont when formulating image with
thin paper (53 up to 64 g/m2).
In the case of too dark/light image density, checking Vcont can
determine whether it's due to failure of potential control or D-max
control, or hard disc fault.
Use case To check Vcont when the image density is too dark or too light.
Adj/set/operate method N/A (display only)
Display/adjust/set range 0 to 600
Unit V
Appropriate target value 70 to 250
Related service mode COPIER> DISPLAY> DPOT> VBACK-N, LPWR-T, VDC-T
Supplement/memo "T" indicates Thin
VBACK-N Fogging removal potentiall: quality/thin
Lv.1 Details Displaying potential Vback for removing foggy image when
formulating image with high quality paper group and thin paper (52
up to 64 g/m2)
Use case In the case of image fault (such as foggy image), determine the fault
of high pressure or potential sensor by displaying Vback.
Adj/set/operate method N/A (display only)
Display/adjust/set range 0 to 600
Unit V
Appropriate target value 70 to 170
Default value 120
Related service mode COPIER> DISPLAY> DPOT> VCONT-N, VCONT-T, LPWR-N,
LPWR-T, VDC-N, VDC-T
Supplement/memo High quality paper group: high quality paper/ recycled paper/
embossed paper/ label/ postcard/ cotton
VBACK-S Dspl of fogging removal potential: coatPP
Lv.1 Details Displaying potential Vback for removing foggy image when
formulating image with coated paper group.
Use case In the case of image fault (such as foggy image), determine the fault
of high pressure or potential sensor by displaying Vback.
Adj/set/operate method N/A (display only)
Display/adjust/set range 0 to 600
Unit V
Appropriate target value 70 to 170
Default value 100/120 (the value differs depending on the environment)
Related service mode COPIER> DISPLAY> DPOT> VCONT-S, LPWR-S, VDC-S
Supplement/memo Coated paper group: 1-side coated paper/ 2-sided coated paper/
vellum/ film
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