Page 26 - MF3010Series Service Manual (Rev.0) (1)-017-045 (1)

2 Technical Overview > Pickup Feed System > Detecting Jams > Other Jams
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■ Stationary Jam ● Delivery Stationary Jam during Auto Delivery
When the Paper Leading Edge Sensor (PS751) detects absence of paper at 1490 (2235)
● Pickup Stationary Jam msec. after the start of auto delivery, and the Fixing Delivery Sensor (PS701) detects
When the Paper Leading Edge Sensor (PS751) cannot detect the trailing edge of paper presence of paper after further feeding paper for 1265 (1900) msec., it is judged as a delivery
within 5325 (7990) msec. after it detects the leading edge, it is judged as a pickup stationary stationary jam.
jam.
When the Paper Leading Edge Sensor (PS751) detects presence of paper at 1490 (2235)
msec. after the start of auto delivery, and the Fixing Delivery Sensor (PS701) detects
NOTE:
The above 5325 (7990) msec. is the paper feed time for the maximum paper size (594 presence of paper after further feeding paper for 5100 (7655) msec., it is judged as a delivery
mm). stationary jam.
● Delivery Stationary Jam during Cleaning

● Delivery Stationary Jam When the Fixing Delivery Sensor (PS701) cannot detect absence of paper within 3445 msec.
following the Main Motor (M1) rotation startup after finishing the cleaning process, it is judged
Paper Leading Edge OFF as a delivery stationary jam.
Sensor (PS751) ON
Fixing Delivery OFF ■ Other Jams
Sensor (PS701) ON ● Fixing Wrap Jam
910(1360)msec 360(540)msec
Paper Absence Detection Period Paper Leading Edge OFF
Sensor (PS751)
Paper Detection Period Jam ON
F-2-30 Fixing Delivery OFF
The Fixing Delivery Sensor (PS701) is monitored for 360 (540) msec. from 910 (1360) msec. Sensor (PS701) ON
after the Paper Leading Edge Sensor (PS751) detects absence of paper. If absence of paper 70 910(1360)msec
cannot be detected even at once, it is judged as a delivery stationary jam. (110)
msec Fixing Wrap Jam Detection Period
NOTE: F-2-31
The margin is set to 20 mm. Bounce of paper is taken into consideration for the setting. When the Fixing Delivery Sensor (PS701) detects absence of paper from 70 (110) msec.
after it last detected presence of paper until 910 (1360) msec. after the Paper Leading Edge
● Pickup Stationary Jam during Auto Delivery Sensor (PS751) last detected absence of paper, it is judged as a fixing wrap jam.
When the Paper Leading Edge Sensor (PS751) detects presence of paper at 1490 (2235) NOTE:
msec. after the start of auto delivery, and the Paper Leading Edge Sensor (PS751) detects The leading-edge detection margin is 8 mm, and the trailing-edge detection margin is
presence of paper after further feeding paper for 3835 (5555) msec., it is judged as a pickup 20 mm.
stationary jam. The above 910 (1360) msec. accounts for 70 (110) msec. calculated from 8 mm and the
time calculated from the "121.31 - 20" mm feeding distance of the trailing edge of paper
from the Paper Leading Edge Sensor (PS751) to the Fixing Delivery Sensor (PS701).
NOTE: The leading-edge detection margin is set to prevent incorrect detection of a wrapping
The above 3835 (5555) msec. paper feed period is the difference between the paper jam during chattering at paper entry.
feed time for the maximum paper size: "5325 (7790) – 1490 (2235) msec.". The trailing-edge detection margin is set longer than the leading-edge margin to allow
for detection time uncertainty due to bounce of paper, etc.

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2 Technical Overview > Pickup Feed System > Detecting Jams > Other Jams