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Toner Supply Control
PID control mode
Uses the TD sensor, ID sensor, and pixel count.
VTREF is adjusted by process control.
PID control mode with fixed VTREF
Change to this mode if the ID sensor breaks.
This mode uses only the TD sensor.
VTREF is fixed at the value stored in SP3-222-001 to –004.
Fixed supply mode
Change to this mode if the TD sensor breaks.
The amount of toner supplied depends on SP3-401-001 to –004.
The default is 70% of normal supply, to prevent excessive supply of toner.
MBD control mode: This is the default mode.
Uses the TD sensor, ID sensor, and pixel count.
VTREF is adjusted by process control.
MBD control mode with fixed VTREF
Change to this mode if the ID sensor breaks.
This mode uses only the TD sensor.
VTREF is fixed at the value stored in SP3-222-001 to –004.
Slide 180
Use SP 3-044 if the TD sensor and/or ID sensor breaks and no spare part is
available.
After replacing the part, return the SP setting to the default.
MBD (Model Based Differential) is similar to PID mode, except the formula is
different, and tuned for each model. PID uses the same formula for each model,
so MBD is more accurate in theory.
180
Di-C1.5 Training
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