Troubleshooting For Document Paper Feeding Problems; No Document Is Fed; Multiple Documents Are Fed - Brother ADS-3600W Service Manual

4.3

Troubleshooting for Document Paper Feeding Problems

4.3.1 No document is fed

<User Check>
- Check that the paper used for the document is within the standard. If it is not within the
standard, use a carrier sheet (Models with carrier sheet only).
- Check that the number of documents set is within the standard.
- Check that the front cover is closed correctly.
- Moisten a soft cloth with cleaning solution. Gently and evenly wipe the pick up roller and
reverse roller perpendicular to the direction of the rotation with the cloth to clean it.
Note: Do not use any solution except the one packaged in the accessory (ethanol or
detergent on the market). Failure to keep this instruction may cause the roller
deterioration or machine break down.
- Replace the reverse roller and pick up roller.
Step
Document detection actuator
1
coming off
2 Front cover sensor attachment failure Reattach the front cover sensor.
Connection failure of the front cover
3
sensor harness
Connection failure of a feed motor
4
harness
Connection failure of the document
5
detection sensor PCB harness
Attachment failure of the gears in a
6
feeding system
7 Front cover sensor failure
8 Document detection sensor failure Replace the document detection sensor PCB.
9 Feed motor failure
10 Main PCB failure

4.3.2 Multiple documents are fed

<User Check>
- Check that the paper used for the document is within the standard. If it is not within the
standard, use a carrier sheet (Models with carrier sheet only).
- Check that the document is not damp. If it is damp, dry it or use a carrier sheet (Models
with carrier sheet only).
- Check that the number of documents set is within the standard.
- Moisten a soft cloth with cleaning solution. Gently and evenly wipe the pick up roller and
reverse roller perpendicular to the direction of the rotation with the cloth to clean it.
Note: Do not use any solution except the one packaged in the accessory (ethanol or
detergent on the market). Failure to keep this instruction may cause the roller
deterioration or machine break down.
- Replace the reverse roller and pick up roller.
Step
Incorrect multi feeding sensor
1
threshold setting
Connection failure of the multi
2
feeding sensor harness
3 Multi feeding sensor failure
Cause
Reattach the document detection actuator.
Reconnect the front cover sensor harness.
Reconnect a feed motor harness.
Reconnect the document detection sensor
PCB harness.
Reattach the gears in a feeding system.
Replace the front cover sensor.
Replace a feed motor ASSY.
Replace the main PCB ASSY.
Cause
Reset the multi feeding sensor threshold.
Reconnect the multi feeding sensor
harness.
Replace the multi feeding sensor.
2-22
Remedy
Remedy
Confidential