Canon imageRUNNER ADVANCE C255 Series, Service Manual, Page: 574 / 987

COPIER (Service mode for copier) > DISPLAY (State display mode) > HV-STS
1ATVC-K4 2 Dspl prmry trns current(Bk):full clr mod
Detail To display the decuple value of the current flown to the Primary Transfer Roller (Bk) by the primary
transfer ATVC control in full color mode.
When the two values are out of the target value range (50 to 700), clear the log information for the
appropriate control (COPIER> FUNCTION> CLEAR> 1TR-CLR).
If the two values are both small, the Primary Transfer Roller may have reached the end of life.
Use Case When estimating the life of Primary Transfer Roller based on the displayed value
Adj/Set/Operate Method N/A (Display only)
Display/Adj/Set Range 0 to 900
Unit uA
Appropriate Target Value 50 - 700
Related Service Mode COPIER> FUNCTION> CLEAR> 1TR-CLR
Amount of Change per
Unit
1
2ATVC 2 Dspl secondary transfer ATVC tgt current
Detail To display the decuple value of the voltage flown to the Secondary Transfer Outer Roller derived
from the secondary transfer ATVC control.
If there is no problem in the result of the control, 3 values are displayed in ascending order.
As the usage of the Secondary Transfer Outer Roller is extended, the value decreases.
Use Case When identifying the cause at the occurrence of an image failure
Adj/Set/Operate Method N/A (Display only)
Display/Adj/Set Range 0 to 65535
Unit uA
Appropriate Target Value 50 - 700
Related Service Mode COPIER> FUNCTION> CLEAR> 2TR-CLR
Amount of Change per
Unit
1
2ATVCENV 1 Dspl sec trns ATVC abslt moistr cntnt
Detail To display the absolute moisture content at execution of the secondary transfer ATVC.
Use Case
At trouble analysis
Adj/Set/Operate Method N/A (Display only)
Display/Adj/Set Range 0 to 9999
Unit g/m3
Appropriate Target Value 0 - 4000
Amount of Change per
Unit
0.01
■ CCD
COPIER (Service mode for copier) > DISPLAY (State display mode) > CCD
TARGET-B 2 Shading target value (B)
Detail To display the shading target value of Blue.
Continuous display of 0 (minimum) or 2047 (maximum) is considered a failure of the Reader
Controller PCB.
Use Case - When replacing the Reader Controller PCB
- At scanned image failure
Adj/Set/Operate Method
N/A (Display only)
Display/Adj/Set Range
0 to 2047
Appropriate Target Value
512 - 2047
8. Service Mode
563