Brother DCP-J100

2-29
Confidential
■ Error Code 3F
Carriage motor cannot stop.
<User Check>
- Release the release lever at the back of the Paper tray and remove the jammed
recording paper from the Engine part.
■ Error Code 40
Casing internal thermistor problem
When the power was turned on, the casing internal thermistor detected a temperature of
-20 degrees centigrade or lower, or 80 degrees centigrade or higher.
Unable to print 3F
LCD
Step Cause Solution
1 Carriage motor harness
connection failure
Reconnect the Carriage motor harness.
2 CR encoder strip stained Clean the CR encoder strip.
3 CR encoder strip defective Replace the CR encoder strip.
4 CR encoder sensor defective Replace the Carriage PCB ASSY.
5 Carriage motor defective Replace the Carriage motor ASSY.
6 Main PCB defective Replace the Main PCB ASSY.
Unable to print 40
LCD
Step Cause Solution
1 Casing internal thermistor
harness connection failure
Reconnect the Casing internal thermistor
harness.
2 Casing internal thermistor
defective
Replace the Ink refill ASSY.
3 Main PCB defective Replace the Main PCB ASSY.