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66 MFP unit explanation ENWW
The developing sleeve speed
detected when the density has
reached the reference level is
recorded as the optimum sleeve
speed, allowing developing to be
performed at this sleeve speed.
2 Timing
a) When the fuser temperature is
lower than 50° C (122° F) at SW2
(sub power) on
b) Every 10,000 prints, upon
completion of the last job.
2 Signals
a Input signals
1 DM_SIG_EX (TCSB to PRCB)
Output voltage of Dmax (maximum
contrast) detection sensor (PC1) on
TCSB (toner control sensor board)
Reference voltage: 2.5 V
2 DM_MONI_EX (TCSB to PRCB)
This signal monitors the light reflected
by the drum surface (without toner).
The voltage applied to the Dmax
(maximum contrast) detection LED is
corrected by TNLED_REF so that the
output voltage becomes 1.9 V
(calibration).
Reference voltage: 1.9 V
<Timing>
Before Dmax (maximum contrast)
correction
3 DRUM_JSIG_EX (TCSB to PRCB)
This signal detects a jam caused by
paper wrapping around the drum. A
jam is detected when the voltage
becomes 4.0 V or more.
4 TEMP, 3.3V2 (TCSB to PRCB)
Drum temperature detection signal
b Output signals
1 DMLED CONT (PRCB to TCSB)
Dmax (maximum contrast) LED
ON/OFF control signal
[L]: LED on
[H]: LED off
2 TNLED_REF (PRCB to TCSB)
Power supply line for PD1 LED on
TCSB.
The voltage is adjusted so that the
Dmax (maximum contrast) MONI
signal becomes 1.9 V.
3 DJLED_CONT (PRCB to TCSB)
JAM LED ON/OFF control signal
[L]: LED on
[H]: LED off