Canon imageCLASS LBP325dn, Service Manual

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Service Mode
ADJUST GR.
Service Mode > ADJUST GR.
CHARGE BIAS K Adjustment of Bk-color primary charging bias
Detail To change the primary charging bias value for black.
Use Case When an image failure occurs
Adj/Set/Operate Method Enter setting value, and then press OK key.
Display/Adj/Set Range -5 to +5
Unit 10V
Default Value 0
DEV BIAS K Adjustment of Bk-color developing bias
Detail To change the developing bias value for black.
Use Case When eliminating Bk-color fogging
Adj/Set/Operate Method Enter setting value, and then press OK key.
Caution
Toner deposit on a white spot area may be solved by changing the value.
Correct the value gradually and observe the result. Toner density in the printing result may change.
Try either a positive or negative value while checking whether the error is cleared.
Display/Adj/Set Range
-5 to +5
Unit
10V
Default Value
0
FRT FUSE TEMP Adjustment of fixing temperature
Detail To change the fixing temperature.
Use Case When an image failure occurs
Adj/Set/Operate Method Enter setting value, and then press OK key.
Caution Raising the fixing temperature may cause hot offset, separation failure for thin moist paper,
and/or further curling.
Lowering the fixing temperature may cause fixing errors.
Display/Adj/Set Range -4 to +4
Unit 5 deg C
Default Value 0
T2 ATVC BIAS F Adjustment of secondary transfer ATVC bias
Detail To change the secondary transfer ATVC value.
Use Case When a secondary transfer image failure occurs
Adj/Set/Operate Method
Enter setting value, and then press OK key.
Caution
Should be applied when an image is not properly transferred onto paper.
1. Image is secondary transferred with bleeding or scattered edges: adjust to the + side (in some
cases adjusting to the - side may improve the symptom).
2. Dark spots or white dots occur on halftone images: adjust to the - side (in some cases adjusting
to the + side may improve the symptom).
Display/Adj/Set Range
-5 to +5
Unit
0.15
Default Value 0
Additional Functions
Mode
User Maintenance > Adj. Scndry Transfer
9. Service Mode
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