2.1 Print Engine Control
2.1.4 Fusing Heater Control
Figure 2–5 shows how the fusing temperature varies after power and during
printing and standby operations.
Figure 2–7 shows the circuitry that controls the fusing temperature. The
surface temperature of the upper fusing unit roller is measured by thermistor
(TH1) and adjusted by the DC control board.
The fusing temperature sets the resistance of TH1, establishing the voltage
level for the analog
F SRT H
signal. The resistance of TH1 decreases as the
fusing temperature increases. The following TH1 resistance readings are
measurable across pins 1 and 2 of the fusing unit connector (J743):
•
Room temperature resistance of TH1 is approximately 239K
.
•
Operating temperature resistance of TH1 is less than 2.0K
.
Figure 2–5 Fusing Temperature Chart
Technical Description 2–9
Summary of Contents for DEClaser 5100
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Page 13: ...DSG 000172 Notes 1 ...
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Page 61: ...2 5 HVPSA Figure 2 12 EP ED Cartridge DSG 000612 2 1 3 4 5 6 7 Technical Description 2 25 ...
Page 62: ...2 5 HVPSA DSG 000172 Notes 2 26 Technical Description ...
Page 70: ...3 2 Control Panel Operation DSG 000172 Notes 3 8 Operating the Control Panel ...
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Page 124: ...7 5 Phantom Jams DSG 000172 Notes 7 8 FIPs for Fixing Paper Jams ...
Page 167: ...9 12 Board DC Control 1 2 4 5 7 8 9 6 3 10 DSG 000657 Removing and Replacing FRUs 9 31 ...
Page 224: ...10 1 Field Replaceable Units DSG 000172 Notes 10 4 FRU Part Numbers ...
Page 254: ...B 4 Connecting to OpenVMS VAX or ULTRIX Systems DSG 000172 Notes B 10 General Information ...
Page 264: ...D 3 Tools DSG 000172 Notes D 4 Training Documentation and Tools ...
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