EPSON AcuLaser C2000 / AcuLaser C1000
Revision E
Operating Principles
Printing Process
96
2.2.8.2 Fusing Temperature Control
Control Circuit
Thermistor 1 (TH1) detects the surface temperature of the heat roller and
inputs temperature signal to CPU. Heater lamp (H1) turns on/
off according to the heater on/off signal, which is conveyed in the form of Pout
signal output according to the thermistor 1 detected temperature.
The surface temperature of the pressure roller is adjusted by the heater
lamp (H2) and thermistor 2.
Even when the thermistor detects the abnormal high temperature (the
surface temperature of the roller exceeded 210
°
C), if the Pout signal is not
turned OFF, the printer turns off the relay of PU1 and turns the heater lamp
OFF compulsory.
Figure 2-31. Fusing Temperature Control
L
Heater ON
H
Heater OFF
+
-
1
0
9
8
~
1
1
2
3
4
DC5V
DC5V
Heater ON/OFF
Signal
TS1
H1
Thermostat
Heater Lamp
PU1
CPU
PJ4D
PJ4A
CN95
PJ5P
TH2
TH1
サ−ミスタ2
サーミスタ1
H
L
H
H
H
2
1
1
2
PJ5D
DC5V
POUT
L Heater ON
L Heater ON
1
2
3
Thermistor 1
Thermistor 2
Summary of Contents for ACULASER COLOR 1000
Page 1: ...EPSON ACULASERCOLOR2000 ACULASERCOLOR1000 A4 Color Laser Printer SEPG00004 SERVICE MANUAL ...
Page 12: ...C H A P T E R 1 PRODUCTDESCRIPTIONS ...
Page 68: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 104: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 138: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Page 182: ...C H A P T E R 5 ADJUSTMENT ...
Page 187: ...C H A P T E R 6 MAINTENANCE ...
Page 189: ...C H A P T E R 7 APPENDIX ...
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