Canon FAXPHONE L100, Руководство по обслуживанию, Страница: 52 / 186

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Technical Overview > Pickup Feed System > Service Tasks > Notes on service tasks
Technical Overview > Pickup Feed System > Service Tasks > Notes on service tasks
NOTE:
The leading-edge detection margin is 8 mm, and the trailing-edge detection margin is
20 mm.
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).
The leading-edge detection margin is set to prevent incorrect detection of a wrapping
jam during chattering at paper entry.
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.
Initial Paper Presence Jam when Printing
When the Fixing Delivery Sensor (PS701) or the Paper Width Sensor (PS702) detects
presence of paper immediately before the Main Motor (M1) starts rotating, it is judged as a
delivery stationary jam.
● Door Open Jam
When printing is interrupted by door-open detection during printing, it is judged as a door
open jam if there is paper at the Paper Leading Edge Sensor (PS751) or the Fixing Delivery
Sensor (PS701). At this time, if the jam status already indicates a jam, the jam status is
retained.
● Initial Paper Presence Jam during Warm-up Rotation
When the Paper Leading Edge Sensor (PS751) detects absence of paper at the start of
warm-up rotation and the Fixing Delivery Sensor (PS701) or the Paper Width Sensor (PS702)
detects presence of paper, it is judged as an initial paper presence jam.
● Paper Absence Detection during Cleaning
OFF
Pickup Solenoid (SL1)
Paper Leading Edge
Sensor (PS751)
ON
OFF
ON
Jam
1370msec
200
msec
Paper Detection Period
When the Paper Leading Edge Sensor (PS751) cannot detect presence of paper within 1370
msec. after 200 msec. from the start of paper pickup, it is judged as paper absence.
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Service Tasks
■ At parts replacement
No task is required for this product at parts replacement.
■ Maintenance
No periodically replaced parts, durable parts or periodical service is set for this product.
■ Notes on service tasks
None.