Canon iR C6800 Series Service Manual page 678

Chapter 9
*1: As many as 3 heaters may be turned on at a time during warm up (other than during start up sequence WMUP2).
To start up the rollers in the shortest time possible under this limit, the fixing heater (H1) and the pressure heater
(H3) are turned on alternately.
*2: As many as 2 heaters may be turned on at a time while start up sequence (WMUP2) is under way; in other words,
the pressure heater (H3) may be turned on only when either the fixing sub heater (H2) or the outside heating roller
heater (H) is off.
*3: Rotates at 1/3 speed (92 mm/sec).
*4: Rotates idly for 1 sec at 1/3 speed every 30 min after the fixing roller stops.
*5: The outside heating roller moves away from the fixing roller when the fixing roller reaches 200 edge C.
*6: While start up sequence (WMUP2) is under way, the machine executes drum surface potential control, primary
transfer ATVC control, and D MAX control.
9.3.2.3 In Standby
When the machine is in standby, the fixing roller is controlled to 200 deg C, pressure roller to 170 deg C, and outside
heating roller to 225 deg C.
*1: Rotates idly for 1 sec at 1/3 speed every 3 min after the fixing roller stops.
9-14
Fixing main heater (H1)
Pressure heater (H3)
Fixing main heater
(H1)
Fixing sub heater
Controlled to 200 deg. C
(H2)
Pressure heater
Controlled to 170 deg. C
(H3)
External heating
Controlled to 225 deg. C
heater (H4)
Fixing motor (M4)
External heating
rollershift motor (M22)
ON
OFF
ON
OFF
1sec 1sec
F-9-11
STBY
*1
: heater temperature control.
: motor on.
F-9-12
0003-2895