Engine Board - Kyocera FS-1050 - B/W Laser Printer Service Manual

(2) Engine board

Main board
(KP-888)
Laser scanner unit
Cassette
switch
Regist-
ration
sensor
Paper
sensor
Bias board
(KP-884)
Toner sensor
High voltage
output circuit
FS-1050
RSTIN
PLGCLK
Reset IC
U02
PLGDRN
PLGRDYN
FANH
FANL
Heater lamp
control circuit
MHVDR, THVDR, RTHDR, HVISEL, HVCLK
24 V DC
5 V DC
Waste
toner
sensor
Interlock
switch
High voltage board
Figure 4-3-3 Engine board circuit block diagram
Engine board (KP-882)
RSTN
PFSEN, PFPFPER, PFCLK
CPU
U01
MRDYN
EEDIO
EESCK
SWIN
RESIT
PAPERN
THERMA
HANDSN
HEATN
ZCROSS
ERASPW
EXITN
ERASER
TONER
TNFULL
5 V DC
output circuit
24 V DC
output circuit
Exit
sensor
Power supply board
4-20
PFMDRN
MOTORN
EEPROM
U03
FEDDRN Registration clutch
RESDRN
MPFDRN
MP feed clutch
MP paper sensor
Eraser
lamp
Eraser
lamp
control
circuit
Cooling fan
Zero
AC input
cross
signal
detection
Triac
circuit
Thermistor
Optional
paper feeder
Main motor
Feed clutch
Heater
lamp