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Confidential
2-33
Error Code 3F
Carriage motor cannot stop.
Error Code 40
Casing internal thermistor defective
Casing internal thermistor detects -20 °C or less and 80 °C or more when power is ON.
Error Code 42
Head voltage fails to be turned OFF.
User Check
- They may occur due to lower surrounding temperature. Use in warmer surrounding
temperature.
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
defective
Replace the ink cartridge PCB ASSY.
2
Main PCB defective
Replace the main PCB ASSY.
Unable to Print 42
LCD
Step
Cause
Solution
1
Head flat cable connection
failure
Reconnect the head flat cable.
2
Carriage flat cable connection
failure
Reconnect the carriage flat cable.
3
Carriage PCB defective
Replace the carriage PCB ASSY.
4
Head defective
Replace the head/carriage unit.
5
Power supply PCB defective
Replace the power supply PCB ASSY.
6
Main PCB defective
Replace the main PCB ASSY.
Summary of Contents for MFC-J6920DW
Page 123: ...3 3 Confidential 2 PACKING ...
Page 146: ...3 26 Confidential 3 Set the protective part Protective part ...
Page 308: ...5 37 Confidential pfadj2 Pattern ...
Page 315: ...5 44 Confidential Margin Check Pattern ...
Page 362: ...App 3 8 Confidential When the following screen appears click Close to close the screen ...