Kyocera FS-1050 Service Manual - Page 79

Engine board, Engine board circuit block diagram

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

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