2.1 Print Engine Control
2.1.5 Fusing Malfunction
If a fusing malfunction occurs, dynamic and passive safety circuits disable the
fusing heater current.
The safety circuit opens RL101 and disconnects the fusing current if the:
•
Fusing temperature fails to reach 172°C (341.6°F) within 200 seconds of
power on, the DC control board asserts
RLD
.
•
Fusing temperature rises above the maximum high temperature
•
Fusing temperature falls below the minimum low temperature.
•
A short circuit occurs in the fusing heater or leads. The LVPSA senses the
increased current and forces the safety circuit to open RL101.
If an uncontrollable temperature rise occurs, the thermoswitch (TP1) opens to
permanently disconnect the fusing current.
When a fusing error occurs, C202 is charged to approxi5 Vdc,
which prevents the operation of the fusing circuit. C202 discharges only
when the power is turned off. If power is turned on before the charge is
completely drained, C202 fully recharges. The printer must remain off for
approximately 10 minutes.
Caution: If you do the following, be sure to power off the printer and disconnect
the power cord. For service reasons only, C202 can be discharged by touching
the
+
lead of C202 to the metal chassis ground frame. Failure to power off the
printer can damage the DC control board.
Figure 2–6 Discharging C202
J201
J212
J203
J204
J205
J206
J207
J208
J209
TB201
J211
C201
C202
J210
VR202
DSG-000598
–
–
+
2–10 Technical Description
Содержание DEClaser 5100
Страница 10: ......
Страница 13: ...DSG 000172 Notes 1 ...
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Страница 36: ...1 8 Resolution Graphics Enhancements Option Board DSG 000172 Notes 1 22 Physical and Functional Description ...
Страница 61: ...2 5 HVPSA Figure 2 12 EP ED Cartridge DSG 000612 2 1 3 4 5 6 7 Technical Description 2 25 ...
Страница 62: ...2 5 HVPSA DSG 000172 Notes 2 26 Technical Description ...
Страница 70: ...3 2 Control Panel Operation DSG 000172 Notes 3 8 Operating the Control Panel ...
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Страница 124: ...7 5 Phantom Jams DSG 000172 Notes 7 8 FIPs for Fixing Paper Jams ...
Страница 142: ...9 3 Assembly Gear 3 Remove the gear assembly through the rear of the printer DSG 000639 9 6 Removing and Replacing FRUs ...
Страница 152: ...9 7 Assembly Paper Delivery 3 Press and release the two clips DS G 0 006 46 1 9 16 Removing and Replacing FRUs ...
Страница 167: ...9 12 Board DC Control 1 2 4 5 7 8 9 6 3 10 DSG 000657 Removing and Replacing FRUs 9 31 ...
Страница 205: ...9 26 Guide HVPSA Contact Plate b Remove the HVPSA contact plate DS G 0 00 68 5 Removing and Replacing FRUs 9 69 ...
Страница 224: ...10 1 Field Replaceable Units DSG 000172 Notes 10 4 FRU Part Numbers ...
Страница 254: ...B 4 Connecting to OpenVMS VAX or ULTRIX Systems DSG 000172 Notes B 10 General Information ...
Страница 264: ...D 3 Tools DSG 000172 Notes D 4 Training Documentation and Tools ...
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