Bias Board - Kyocera Mita KM-1500 Service Manual

2-3-4 Bias board

The bias board contains the developing bias output circuit, registration sensor, paper empty sensor, and the cassette switch.
It also provides a liaison connection to the high voltage board, power supply, and the toner sensor.
Toner
sensor
+24V2
+24V1
+5V
Power
supply
High
board
voltage
board
Developing
roller
Bias board (KP-5067)
+5V
TONER
+24V2
+24V2
+5V
+5V
FAN
275 V DC + AC
Figure 2-3-8 Bias board circuit block diagram
TONEREPY
+24V2
SLEEP
FET
+24V3
+24V3
+5V
Regist-
RESIT
ration
sensor
Casette
SWIN
switch
Paper
sensor
RTHVDR, HVISEL
PSEL1, PSEL2
FAN1
FAN2
HEATN, ZCROSS, SLEEPN
EXTIN, THERM
+24V2
HVCLK
Developing bias
output circuit
2DC
Engine board
2-3-9