Chapter 2
2-24
2.8.2 Various Control Mechanisms
2.8.2.1 Fixing Temperature Control
2.8.2.1.1 Fixing temperature control
0018-3137
LBP3370 / LBP3310
The fixing temperature control detects the surface temperature of the fixing heater. It controls the drive signals of the fixing heater and maintains its temperature at
the targeted temperature.
F-2-30
The temperature control of the fixing heater is performed by the following four modes.
1) Initial temperature control
This control initializes the temperature of the fixing heater at the normal targeted temperature after the print command is input to the engine controller.
2) Normal temperature control
This control maintains the temperature of the fixing heater at the normally targeted temperature during print operation.
The target temperature may be any of 7 settings, used according to the selected fixing mode. Any of these modes is selected according to the settings of the driver
and such parameters as paper size and the number of printouts.
The following shows the relationship between the paper type setting and the fixing mode in relation to the fixing target temperature:
T-2-4
Paper type selected for driver
Fixing target temperature
Plain paper
195 to 190 deg C
Plain paper L
180 to 160 deg C
Heavy paper 1
210 to 200 deg C
FSRTH
FSRD
SSR101
RLYD
RL101
Fixing film unit
Thermoswitch (TP1)
+24V
Q103
+3.3V
IC501
+3.3V
IC201
CPU
FU101
Fixing heater safety circuit
AC input
Engine controller PCB
Thermistor (TH1)
Fixing heater (H1)
Pressure roller
Fixing heater drive circuit
Fixing control circuit
Q101
+24V
+3.3V
J102-1
J205-2
J102-
3
J205-1
Содержание LBP3310
Страница 1: ...Jan 25 2008 Service Manual LBP3310 3370 Series ...
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Страница 25: ...Chapter 2 TECHNICAL REFERENCE ...
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Страница 55: ...Chapter 3 DISASSEMBLY AND ASSEMBLY ...
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Страница 112: ...Chapter 6 6 4 2 Duplexing driver PCB 3 Engine controller PCB 4 Video controller PCB 5 USB conector PCB ...
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