Detecting Jams; Jam Detection Outline; Delay Jams; Stationary Jams - Canon LBP5050 Series Service Manual

Cassette pickup solenoid
Cassette media presence
sensor
Top of page sensor
Loop sensor
Manual feed slot media presence
sensor
Manual feed slot top of page
sensor
Fixing delivery sensor

2.5.2 Detecting Jams

2.5.2.1 Jam Detection Outline

2.5.2.1.1 Outline

LBP5050N / LBP5050
The printer uses the following sensors to detect the presence of media and to check whether media is being fed correctly or has jammed:
- Cassette media presence sensor
- Top of page sensor
- Loop sensor
- Priority slot media presence sensor
- Priority slot top of page sensor
- Fixing delivery sensor
The printer detects the following jams:
1. Pickup delay jam
2. Pickup stationary jam
3. Delivery delay jam
4. Delivery stationary jam
5. Fixing wrapping jam
6. Residual media jam

7. Door open jam

2.5.2.2 Delay Jams

2.5.2.2.1 Paper delay JAM

LBP5050N / LBP5050
In case that the paper edge sensor cannot detect the leading edge of paper by the time of re-pickup from the image formation start.

2.5.2.2.2 Fixing delay JAM

LBP5050N / LBP5050
In case that the fixing delivery sensor cannot detects the leading edge of paper within 3.9 sec from re-pickup start.

2.5.2.3 Stationary Jams

2.5.2.3.1 Pickup residual JAM

LBP5050N / LBP5050
In case that the paper edge sensor cannot detect the trailing edge of the paper within 8.4 sec from re-pickup start.

2.5.2.3.2 Fixing Stationary Jam

LBP5050N / LBP5050
The fixing delivery sensor cannot detect the trailing edge of paper within 4.5 sec after the paper leading edge sensor detects the trailing edge of paper.

2.5.2.4 Other Jams

2.5.2.4.1 Fixing winding JAM

LBP5050N / LBP5050
In case that the sensor turns OFF by the time that the fixing residual detection start after the fixing delivery sensor detects the leading edge of the paper.

2.5.2.4.2 In-body residual JAM

LBP5050N / LBP5050
If any of the following sensor detects the paper presence at power ON, door close or before/after printing; manual feed paper edge sensor, paper edge sensor, paper
arch sensor and fixing delivery sensor.
2.5.2.4.3 Door open JAM
LBP5050N / LBP5050
When door open is detected during printing, if the certain censor detects paper presence.
Description
CASSETTE PICKUP SOLENOID DRIVE
SL705
signal
SR601 CASSETTE MEDIA PRESENCE signal
SR602 TOP OF PAGE signal
SR603 LOOP DETECTION signal
MANUAL FEED SLOT MEDIA
SR604
PRESENCE signal
MANUAL FEED SLOT TOP OF PAGE
SR605
signal
SR609 FIXING DELIVERY signal
Signal
DC controller
DC controller
DC controller
DC controller
DC controller
DC controller
DC controller
Chapter 2
Driver
0018-6694
0019-1697
0019-1703
0019-1711
0019-1713
0019-1716
0019-1721
0019-1730
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