Paper Feeding Troubleshooting; Pickup Function Of Paper Tray Does Not Work; No Feeding - Brother FAX-2840 Service Manual

3.5

Paper Feeding Troubleshooting

Problems related to paper feeding are end user recoverable if following the User Check
items. If the same problem occurs, follow each procedure in the order of the number
described in the Step column in the tables below.

3.5.1 Pickup function of paper tray does not work

Step
1 Link arm catching on some position Correct the position of the link arm.
Pick-up roller ASSY catching on
2
some position
Connection failure of the main
3
motor harness
Plate-up gear (gear Z19M10 or lift
4
gear 46) failure
5 Main motor failure
Low voltage power supply PCB
6
failure
7 Main PCB failure

3.5.2 No feeding

Cannot detect paper when feeding.
<User Check>
- Check that the paper tray is loaded correctly.
- Check that the paper is loaded into the paper tray correctly.
- Check that the paper smaller than the specified size is not loaded.
- Adjust the paper guide corresponding to the position of paper guide.
- Check that there is not too much paper set in the tray.
- Clean the surface of the separation pad or pick-up/separate roller.
Step
Attachment failure of the link arm
1
and pick-up roller ASSY
Connection failure of the T1 clutch
2
ASSY harness
Connection failure of the
3 registration front sensor PCB
harness.
4 Pick-up roller failure
Plate-up gear (gear Z19M10 or lift
5
gear 46) failure
6 T1 clutch ASSY failure
7 Main PCB failure
Registration front sensor PCB
failure
8
Cause
Cause
2-60
Remedy
Correct the position of the pick-up roller
ASSY.
Reconnect the main motor harness.
Replace the plate-up gear (gear Z19M10 or
lift gear 46).
Replace the main motor.
Replace the low voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Remedy
Reattach the link arm and pick-up roller
ASSY.
Reconnect the T1 clutch ASSY harness.
Reconnect the registration front sensor
PCB harness.
Replace the paper feeding kit.
Replace the plate-up gear (gear Z19M10 or
lift gear 46).
Replace the T1 clutch ASSY.
Replace the main PCB ASSY.
Check the sensor performance following the
procedure in "Function code
problem occurs, replace the regist frame
ASSY.
32". If any
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