Carriage Motor Cannot Stop; 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 - Brother DCP-J552DW Service Manual

■ Error Code 3F
Unable to print 3F

Carriage motor cannot stop.

<User Check>
- Remove the jammed recording paper from the engine part.
Step
1 Carriage motor harness
connection failure
2 CR encoder strip stained
3 CR encoder strip defective
4 CR encoder sensor defective
5 Carriage motor defective
6 Main PCB defective
■ Error Code 40
Unable to print 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.
Step
1 Casing internal thermistor harness
connection failure
2 Casing internal thermistor
defective
3 Main PCB defective
Cause
Reconnect the carriage motor harness.
Clean the CR encoder strip.
Replace the CR encoder strip.
Replace the carriage PCB ASSY.
Replace the carriage motor.
Replace the main PCB ASSY.
Cause
Reconnect the casing internal thermistor harness.
Replace the ink refill ASSY.
Replace the main PCB ASSY.
2-32
LCD
Solution
LCD
Solution
Confidential