Bias Board - Kyocera 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.
+24V2
+24V1
+5V
Power
supply
High
board
voltage
board
+5V
Toner
TONER
sensor
+24V2
+24V2
+5V
+5V
FAN
275 V DC + AC
Developing
roller
Figure 2-3-8 Bias board circuit block diagram
Bias board (KP-5067)
FET
+24V3
Regist-
ration
sensor
Casette
switch
Paper
sensor
+24V2
Developing bias
output circuit
TONEREPY
+24V2
SLEEP
+24V3
+5V
RESIT
SWIN
RTHVDR, HVISEL
PSEL1, PSEL2
FAN1
FAN2
HEATN, ZCROSS, SLEEPN
EXTIN, THERM
HVCLK
2DC
Engine board
2-3-9