Brother MFC-J6920DW, Service Manual

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Confidential 2-28

Error Code 2F
Ink cartridge cover sensor detects opened cover state.
User Check
- Close the ink cartridge cover.

Error Code 30
Head/carriage unit does not move. Detected by the CR encoder sensor.
User Check
- Remove the jammed paper in platen part.
Cover is Open / Close Ink Cover LCD
Step Cause Solution
1 Ink cartridge cover harness
connection failure Reconnect the ink cartridge cover harness.
2 Ink cartridge cover defective Replace the ink cartridge cover.
3 Ink cartridge cover sensor
defective Replace the ink cartridge cover sensor ASSY.
4 Main PCB defective Replace the main PCB ASSY.
Unable to Print 30 LCD
Step Cause Solution
1 Foreign materials in the engine
unit Remove foreign materials.
2 CR encoder strip out of place Set the CR encoder strip into place.
3 CR timing belt out of place Set the CR timing belt into place.
4 Head cover out of place Set the Head cover into place.
5 Carriage motor harness
connection failure Reconnect the carriage motor harness.
6 Carriage flat cable connection
failure Reconnect the carriage flat cable.
7 CR encoder strip stained Clean the CR encoder strip.
8 CR encoder strip defective Replace the CR encoder strip.
9 CR encoder sensor defective Replace the carriage PCB ASSY.
10 Carriage motor defective Replace the carriage motor ASSY.
11 Main PCB defective Replace the main PCB ASSY.