Canon iR8500 Service Manual page 661

SERVICE MODE
COPIER>DISPLAY
<DPOT>
Indicates the photosensitive drum surface potential control data.
DPOT-K
Indicates the surface potential of the photosensitive drum (V).
VL1T
Indicates the target value of the light area potential (VL1) for the copier
(V).
VL1M
Indicates the measurement taken of the light area potential (VL1) for the
copier (V) (optimum reference: VL1T ±6 V).
VDT
Indicates the target value of the dark area potential (VD) for the copier (V).
VDM
Indicates the measurement taken of the dark area potential (VD) for the
copier (V) (optimum reference: VDT ±6 V).
VDM-P
Indicates the measurement taken of the dark era potential (VD) for printer
(PDL) images (V) (optimum reference: VDT-P ±6 V).
VDT-P
Indicates the target value of the dark area potential (VD for printer (PDL)
images (V).
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COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001