Brother HL-4140CN Service Manual page 54

■ Error code 17
No Tray
A Tray is not detected, install Tray 1.
(The paper tray cannot be detected, re-install Tray 1.)
The paper tray 1 is not installed before printing.
(The cassette of the T1 paper edge sensor is open.)
<User Check>
- Open and close the paper tray 1.
Step
1 T1 paper edge actuator catching
on some position
2 Harness connection failure of
T1 paper edge sensor PCB
ASSY
3 T1 paper edge sensor PCB
failure
4 Engine PCB failure
5 Main PCB failure
■ Error code 18
No Tray
A Tray is not detected, install Tray 2.
(The paper tray cannot be detected, re-install Tray 2.)
The paper tray 2 is not installed before printing.
(The cassette of the T2 paper edge sensor is open.)
<User Check>
- Open and close the paper tray 2.
Step
1 T2 paper edge actuator catching
on some position
2 Harness connection failure of
T2 sensor PCB ASSY
3 Harness connection failure of
T2 Relay PCB ASSY
4 T2 sensor PCB ASSY failure
5 T2 Relay PCB failure
6 Engine PCB failure
7 Main PCB failure
The message displayed in the second line on the LCD might
be the one in parentheses according to the version.
Cause
The message displayed in the second line on the LCD might
be the one in parentheses according to the version.
Cause
2-23
Remedy
Check the T1 paper edge actuator and
reinstall it.
Check the harness connection of the
T1 paper edge sensor PCB ASSY and
reconnect it.
Replace the T1 paper edge sensor PCB
ASSY.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check the T2 paper edge actuator and
reinstall it.
Check the harness connection of the
T2 sensor PCB ASSY and reconnect it.
Check the harness connection of the
T2 Relay PCB ASSY and reconnect it.
Replace the T2 paper feed frame unit.
Replace the T2 Relay PCB ASSY.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
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