No Paper Feeding From The Lt Paper Tray Unit - Brother HL-L9300CDW Service Manual

4.2.2

No paper feeding from the LT paper tray unit

< User Check >
- Check if the paper is loaded into each paper tray correctly.
- Check that too much paper is not loaded in any paper tray.
- Turn back the paper loaded in each paper tray or change the orientation of the paper by 180°.
- Check if the thickness of the paper is 60 to 105 g/m
- Check whether a tray other than the tray you want to use is specified for the paper feeding
tray.
- Fan the stack of paper well and reinsert the papers into the paper tray.
- Clean the LT paper pick-up roller.
- Check whether the paper tray 1 and LT paper tray unit are closed correctly.
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
Cause
LT paper feed actuator coming
off
Connection failure of the main
motor harness
LT roller holder ASSY installation
failure
Connection failure of the LT
paper feed/plate origin sensor
PCB harness
Connection failure of the LT
registration sensor PCB harness
Connection failure of the LT relay
PCB harness
LT paper pick-up roller worn out
LT relay PCB failure
Main motor failure
Paper feed related gear
damaged
Fuser unit damaged
Main PCB failure
LT connector or LT plate motor
failure
2
.
Re-assemble the LT paper feed actuator.
Reconnect the main motor harness.
Install the LT roller holder ASSY correctly.
Reconnect the LT paper feed/plate origin
sensor PCB harness.
Reconnect the LT registration sensor PCB
harness.
Reconnect the LT relay PCB harness.
Replace the PF kit 2 or PF kit 3.
Replace the LT relay PCB ASSY.
Replace the process drive unit.
Replace the main drive unit.
Replace the fuser unit.
Replace the main PCB ASSY.
Replace the LT paper tray unit.
2-86
Remedy
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