Service manual

2
"
""
" What Happens During Auto Process Control
Auto Process Control is performed in the following order (Steps 1–5).
Step Item Purpose What Happens
SC Issued If
Fails
Related Display
SP
Reference
Manual Page
Comments
1 Drum potential
sensor
calibration
To calibrate the
drum potential
sensor so that it
will correctly
detect VD and
VH in Steps 3
and 4.
The machine applies –200V then –700V to
the OPC surface, and the drum potential
sensor takes readings both times.
SC310, 311 SP3902-7: VM200
SP3902-8: VM700
P6-67
2 ID sensor
adjustment
To adjust Vsg to
within the target
range for Vref
calculation in
Step 5.
Adjusts Vsg to within 4±0.2V.
SC353, 354 SP3001-1: ID
Sensor PWM
Setting
SP3103-2: Vsg
Initial
P6-68