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3: Operation
3-10
Colorwriter LSR 2000 Printer
Service Guide
Figure 3-6
Mechanical controller input/output signals (1 of 2)
DEVHP
CL2
Developing unit drive
clutch
+24V
/DEVON
J2017-4
-3
Mechanical controller PCB
High-voltage power
supply PCB
Developing
rotary position
sensor
Pick-up PCB
Developing rotary unit
PS4
PS3
DEVCAM
+5V
OILFUL
Oil overflow
sensor
Delivery paper
sensor
Fixing unit
PS10
PS9
POUT
+5V
+5V
CL1
Developing rotary
brake clutch
+24V
/DEVBRK
J2017-2
-1
SL6
Attraction roller press
solenoid
+24V
/ATTSLON
J2014-2
-1
SL9
Discharge roller press
solenoid
+24V
/DCSLON
J2014-10
-9
SL7
Drum press solenoid
+24V
/DDSLON
J2017-4
-3
SL8
Transfer drum cleaner
press solenoid
+24V
/WEBSL
J2014-5
-6
SL3
Cleaning belt drive
solenoid
+24V
/TDCSLON
J2009-8
-7
CL4
Fixing unit drive clutch
+24V
/FIXON
J2011-2
-1
+5V
Serial communication
J2036-4
-6
-5
J2036-1
-3
-2
"L" to turn ON CL2, rotating the rotary.
"H" to turn OFF CL2, rotating the developing sleeve.
"L" to turn ON CL1, braking the developing rotary.
"H" when oil overflows from oil pan 2.
"H" when print paper is detected.
"L" to turn ON SL6, operating the attraction roller
press cam. This solenoid is used to control the
pressing/separation between the attraction roller
and the transfer drum.
"L" to turn ON SL7, operating the transfer drum
press cam. This solenoid is used to control the
pressing/separation between the photosensitive
drum and the transfer drum.
"L" to turn ON SL9, operating the discharge roller
press cam. This solenoid is used to control the
pressing/separation between the discharge roller
and the transfer drum.
"L" to turn ON SL8, operating the cleaning brush
press cam. This solenoid is used to control the
pressing/separation between the cleaning brush
and the transfer drum.
"L" to turn ON SL12.
This solenoid is used to drive the cleaning belt.
"L" to turn ON SL3 rotating the rollers in the fixing unit.
"L" when the toner cartridge is pressed
against the photosensitive drum.
"H" when the toner cartridge is separated
from the photosensitive drum.
"H" when a flag is detected.
See P. 2-53 and P. 2-54.
Serial communication
Toner cartridge
position
sensor