Engine Pwb - Olivetti d-Copia 18MF Service Manual

2-3-2 Engine PWB

Main PWB
Laser scanner unit
Cassette
switch
Regist-
ration
sensor
Paper
sensor
Bias PWB
+24V2
FET
+24V3
Y104230-6
RSTIN
PLGCLK
+24V3
Reset IC
U3
PLGDRN
PLGRDYN
FAN1
FAN2
Heater lamp
control circuit
MHVDR, THVDR, RTHDR, HVISEL, HVCLK
+24V2
+24V3
+5V
Waste
toner
sensor
Toner sensor
+24V2
Interlock
High voltage
switch
output circuit
High voltage PWB
Figure 2-3-3 Engine PWB circuit block diagram
Engine PWB
ISUMOTA, ISUMOTNA
ISUMOTB, ISUMMOTONB
LAMP , LAMPHI, LAMPLOW
HPSWN
RSTN
CPU
U1
PFSEN, PFPFPER, PFCLK
MRDYN
SWIN
RESIT
EEDIO
PAPERN
EESCK
THERMA
HEATN
ZCROSS
EXITN
HANDSN
SLEEP
ERASER
TONER
TNFULL
5 V DC
output circuit
+24V1
24 V DC
output circuit
+24V2
Exit
sensor
Power supply PWB
Sevice Manual
Scanner
PWB
Scanner
home
position
sensor
Exposure
lamp
PFMDRN
MOTORN
Main
motor
EEPROM
U5
FEDDRN Registration clutch
RESDRN
MPFDRN
MP feed clutch
MP paper sensor
+24V3
Eraser
lamp
control
circuit
Cooling fan
Zero
AC input
cross
signal
detection
Triac
circuit
Thermistor
Scanner
motor
Optional
DP
CCD
PWB
Inverter
PWB
Feed clutch
Eraser
lamp
Heater
lamp
2-3-7