Brother FAX-2840 Service Manual page 78

Error code 8A
Jam Tray
Remove the jammed paper from Tray, then press Start.
The registration front sensor does not detect paper pass within the specified time.
<User Check>
• Check that the paper is not jammed at the paper tray and the front cover.
• Adjust the paper guide corresponding to the paper size.
• Check that the thickness of the paper is 60 to 105 g/m
• Check that there is not too much paper set in the tray.
Step
Coming off of the registration
1
front actuator
Connection failure of the
2 registration front/rear sensor
PCB ASSY harness
Registration front/rear sensor
PCB failure
3
4 Main PCB failure
Error code 8B and 8C
These errors do not usually occur in the normal use. The conceivable causes are noise
around the installation site, fluctuation of the power supply voltage, and failures in the
software.
---
An unidentified error occurred.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Cause
Reattach the registration front actuator.
Reconnect the registration front/rear sensor
PCB ASSY harness.
Check the performance of the registration front
sensor and the registration rear sensor
following the procedure in
If any problem occurs, replace the regist frame
ASSY.
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
2-41
2
.
Remedy
"Function code
Remedy
32".
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