Oki B6100 Technical Manual page 496

Wiring Diagrams and Interconnections
DB7 PWBA HKB26 MCU <=> Motor Assy Main, Motor Assy Exit and Sensor Assy CRU
The following table shows the signal names for the PWBA HKB26 MCU <=> Motor Assy Main,
Motor Assy Exit and Sensor Assy CRU path:
Signal Name
5VLD +5V power source to the Laser Diode (0V when the CRU is not in place.)
/CRU Signal which activates the 5VLD circuit (0V when the CRU is not in place)
/EXIT XB Phase XB drive signal for the stepping motor (LOW when driving, and High when not driving)
/EXIT XA Phase XA drive signal for the stepping motor (LOW when driving, and High when not driving)
/EXIT B Phase B drive signal for the stepping motor (LOW when driving, and High when not driving)
/EXIT A Phase A drive signal for the stepping motor (LOW when driving, and High when not driving)
/M RSV
/MALRM Main motor monitor signal. Goes Low when the rotation of the Motor Assy Main is abnormal.
/MMOT ON Main motor control signal to turn the Motor Assy Main on and off.
The following table shows signal names and output levels for the PWBA HKB26 MCU <=> Motor
Assy Main, Motor Assy Exit and Sensor Assy CRU path:
Pin
P25-3
P25-2
P32-5
P32-4
P32-3
P32-2
P29-9
P29-8
P29-7
14-22
Signal Direction
C: Censor Assy CRU,
Signal Name ME: Motor Assy Exit,
MM: Motor Assy Main
5V LD
/CRU
/EXIT XB
/EXIT XA
/EXIT B
/EXIT A
/M RSV
/MALARM
/MMOT ON
Description
Trigger
M: MCU
C => M Level
C => M Level
ME <= M Level
ME <= M Level
ME <= M Level
ME <= M Level
MM <= M Level
MM => M Level
MM <= M Level
OKI B6100 Laser Printer - Base Engine Technical Manual
HIGH LOW
Level Level
5V 0V
5V 0V
24V 0V
24V 0V
24V 0V
24V 0V
3.3V 0V
3.3V 0V
3.3V 0V
Version 1.0