Canon LBP-3000, Руководство по обслуживанию

Страница: 41 / 118

HTTP://WWW.FIXCLUB.COM.CN
Chapter 2
2-15
F-2-18
The machine checks for a jam with reference to the presence/absence of paper at a specific sensor at such times as programmed in advance.
When the CPU detects a jam, it will suspend the ongoing printing operation and communicate the fact to the video controller.
2.5.2.2 Delay Jams
2.5.2.2.1 Pickup Delay Jam
0008-0153
The machine uses a retry mechanism in which it executes pickup operation twice for detection of a pickup delay jam caused by a pickup fault.
The CPU executes pickup operation twice if the paper leading edge sensor (PS801) does not detect the leading edge of print paper within about 1.4 sec
after the pickup solenoid (SL1) goes on.
Thereafter, if the paper leading edge sensor (PS801) does not detect the leading edge of print paper within about 1.4 sec, the machine will assume the
condition to indicate a pickup delay jam.
2.5.2.2.2 Delivery Delay Jam
0008-0156
The CPU will assume the presence of a delivery delay jam if the delivery sensor (PS803) does not detect the leading edge of print paper about 1.8 sec after
the paper leading edge sensor (PS801) has detected the leading edge of print paper.
2.5.2.3 Stationary Jams
2.5.2.3.1 Pickup Stationary Jam
0008-0155
The CPU will detect the presence of a pickup stationary jam if the trailing edge of print paper is not detected about 4.6 sec after the paper leading edge
sensor (PS801) has detected the leading edge of print paper.
Moreover, it will also assume the presence of a pickup stationary jam if the paper width sensor (PS802) does not detect the trailing edge of paper within
200 msec after the paper width sensor (PS802) has detected the leading edge of paper and the paper leading edge sensor (PS801) has detected the trailing
edge of paper.
2.5.2.3.2 Delivery Stationary Jam
0008-0157
The CPU will assume the presence of a delivery stationary jam if the delivery sensor (PS803) does snot detect the leading edge of print paper during a
period of about 2.0 sec after the paper leading edge sensor (PS801) has detected the trailing edge of print paper.
2.5.2.4 Other Jams
2.5.2.4.1 Wrapping Jam Around the Fixing Assembly
0008-0158
The CPU will assume that paper has wrapped around the fixing assembly if the delivery sensor (PS803) does no detect the trailing edge of paper within
about 1.3 sec after the delivery sensor (PS803) has detected the leading edge of print paper and then about 1.3 sec after the paper leading edge sensor
(PS801) has detected the leading edge of print paper.
2.5.2.4.2 Residual Jam at Start-Up
0008-0159
The CPU will identify a residual jam when the paper leading edge sensor (PS801) or the delivery sensor (PS803) detects print paper at the start of initial
rotation.
2.5.2.4.3 Door Open Jam
0008-0161
The CPU will identify a door open jam if the leading edge sensor (PS801) or the delivery sensor (PS803) detects print paper when the door is identified as
being open.
2.5.3 Multi-purpose Pickup
2.5.3.1 Pickup from the Pickup Tray/Manual Feed Tray
0008-0168
When paper is picked up from either the pickup tray or the manual feed tray, the machine makes sure that no more than a single sheet of power is picked