Brother HL-5340D Service Manual page 77

DUPLEX DISABLED
The back cover is open, or the DX unit is not set.
<User Check>
- Close the back cover.
- Set the DX unit.
Step
Harness connection failure of back
cover sensor
1
2 Broken boss of back cover
3 Back cover sensor failure
4 Main PCB ASSY failure
FONT FULL
The number of the registration of the font is overflowed.
<User Check>
- Cut down the registration of the font.
- Add on the DIMM.
Step
1 Main PCB ASSY failure
FRONT COVER OPEN
Front cover is opened.
<User Check>
- Check if the front cover is closed certainly.
Step
Harness connection failure of
1
interlock SW ASSY
Interlock SW ASSY failure
2
Part pressing the cover sensor
3 harness ASSY is broken, which is
provided at inside of process cover
4 Relay front PCB ASSY failure
5 Main PCB ASSY failure
Cause
Check the sensor performance following
the procedure in
in 1.3 Service Mode in Chapter
If any problem occurs, check the harness
connection of the back cover sensor, then
reconnect it.
Replace the back cover.
Replace the back cover sensor.
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
Cause
Check the harness connection of the
interlock SW ASSY, and reconnect it.
Check the sensor performance following
the procedure in
in 1.3 Service Mode in Chapter
If any problem occurs, check the harness
connection of the interlock SW ASSY, then
reconnect it.
Replace the process cover ASSY.
Replace the relay front PCB ASSY.
Replace the main PCB ASSY.
3-19
Remedy
"Factory Inspection Mode"
7.
Remedy
Remedy
"Factory Inspection Mode"
7.
Confidential