Service Manual

FIXING UNIT
2-25
II UNIT EXPLANATION
[3] TH2 (Fixing temperature
sensor/2)
Detection of temperature at the edge (front side) of the fixing heating
roller
Contact type
[4] TH1 (Fixing temperature
sensor/1)
Detection of temperature at the center of the fixing heating roller
Contact type
[5] Cleaning web Cleaning of the fixing heat roller
Web wind-up method
[6] Fixing cleaning roller Tension pressure on the cleaning web
Spring pressure
[7] TS (Thermostat) Protection of the fixing heat roller against high temperature abnor-
mality (about 428°F)
Contact type
[8] L3 (Fixing heater lamp/2) Heating of the fixing heat roller (Sub)
AC drive
[9] L2 (Fixing heater lamp/1) Heating of the fixing heat roller (Main)
AC drive
[10] Fixing guide Paper conveyance guide, pressure/release of the fixing pressure
roller
[11] PS2 (Fixing exit sensor) Detection of paper at the fixing unit exit
Photosensor + actuator
[12] Neutralizing brush Neutralizing of paper that is exited
Neutralizing by means of a brush
[13] Fixing claw Separation of paper from the fixing heat roller
Spring pressure type (6 pcs.)
M11 Fixing motor Driving of the fixing heat roller and the ADU conveyance roller/1
DC brushless motor, PLL control
SD4 Cleaning web solenoid Driving of the cleaning web
24V drive
FCB Fixing control board Prevention of noise leak in the drive power for L3 (Fixing heater lamp
/2)
220V system only
Symbol Name Function or method