Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual page 43

Error code 85
No Tray
A Tray is not detected, install Tray 1.
Tray 1 (T1) is not installed into the machine.
User Check
- Check if Tray 1 (T1) is installed into the machine.
- Check if the paper is jammed in Tray 1 (T1).
Step
1 T1 PE/edge sensor PCB
failure
2 Harness connection failure of
T1 PE/edge sensor PCB
ASSY
3 Engine PCB failure
Error code 89
Size Error DX
Specify the correct paper and press Go.
Incorrect paper size in duplex printing
User Check
- Use the letter size or longer paper.
- Do not use too thin paper.
Step
1 Registration rear sensor PCB
failure
Cause
Check the sensor performance following the
procedure described in
any problem occurs, replace the T1 PE/edge
sensor PCB ASSY.
Check the harness connection of the T1 PE/edge
sensor PCB ASSY and reconnect it.
Replace the engine PCB ASSY.
Cause
Check the sensor performance following the
procedure described in
any problem occurs, replace the registration rear
sensor PCB ASSY.
1-26
Remedy
"Maintenance mode
Remedy
"Maintenance mode
Confidential
32". If
32". If