Connector Locations 5-23
4022-XXX
Engine Board <−> Printhead and Toner Cartridge (2/3)
Signal names for Engine Board <−> Printhead route
Pin numbers and voltage levels for Engine Board <−> ROS route
Signal Name Explanation
XP DATA + Print image data
DATA+ > DATA-: Lights on.
DATA+ < DATA-: Lights off.
XP DATA -
/PCONT Sample/hold circuit. Low = Sample (LD lights on forcibly.) High = Hold
/LDENB A control signal that allows the light emission of the laser diode. High: Laser Diode
OFF
MO A laser output monitor signal that feeds back the output of laser beams radiated by the
laser diode (analog signal).
Vref A laser output control signal that determines or adjusts the current of the laser diode.
LD +5V Driving power of the laser diode that radiates laser beams.
/SOS A synchronization signal generated by the SOS sensor, that instructs to start each
scan operation.
/ROSMOT ON A scanner motor control signal that turns on and off the scanner motor.
Low: ON / High: OFF
ROSMOTCLK A clock signal for printhead motor.
P11/P22
P111 /
P114/
P221
Signal Name
Signal Direction
M: Engine Board,
L: LD
S: Scanner Motor
R: Printhead
Trigger High Level Low Level Note
P22-1 P221-2 XP DATA + M → L - 1.4V (TYP) 1.0V (TYP)
P22-2 P221-1 XP DATA - M → L - 1.4V (TYP) 1.0V (TYP)
P11-1 P111-7 /PCONT M → L Level 5V 0V
P11-2 P111-6 /LDENB M → L5V0V
P11-3 P111-5 MO M ← L - * * 0.683 -
1.820 V
P11-4 P111-4 Vref M → L - * * 0.683 -
1.820 V
P11-6 P111-2 LD +5V M → L Level 5V 0V
P11-7 P111-1 /SOS M → L Level 5V 0V
P11-10 P114-3 /ROSMOT ON M → S Level 5V 0V
P11-12 P114-1 ROSMOTCLK M → S-5V0V
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