Oki B6100 Technical Manual page 481

DB1 PWBA HKB26 MCU <=> PWBA HKB PS and Fuser Assy
The following table shows pin numbers, and voltage levels for the PWBA HKB26 MCU <=> PWBA
HKB PS:
P281
13
12
11
9
The following table shows the signal names for the PWBA HKB26 MCU <=> PWBA HKB PS path:
Signal Name
FAN ON Fan drive power that drives the Fan Assy with 2 voltages, 24V for High speed and 5V for Low
speed
/HEAT (TTL) Fuser control signal to switch AC power to the Heat Rod on and off
Low: ON, High: OFF
/FHIGH (24V) Fan speed switching signal that switches the speed of rotation of the Fan Assy between High
and Low
Low: High speed, High: Low speed
FAN ALARM Fan monitor signal. Goes Low when the rotation of the Fan Assy is abnormal
(TTL)
Low: Abnormal, High: Normal
OKI B6100 Laser Printer - Base Engine Technical Manual
Version 1.0
P28 Signal Name
13 FAN ON
12 /HEAT
11 /FHIGH
9 FAN ALARM
Wiring Diagrams and Interconnections
Signal Direction
Trigger
L: LVPS, M:MCU
-
L <= M
L <= M Level
L <= M Level
L => M Level
Description
HIGH LOW
Level Level
24V 15V
3.3V 0V
24V 0V
3.3V 0V
14-7