Brother P-touch QL-710W - The Tape Is Not Feed Correctly

IV - 13
[8] The tape is not feed correctly.
N
N
Y
Y
Y
Y
NN
Y
Y
Y
Y
N
N
N
N
N
Y
The tape feed is not correctly.
Repair completed.
The old roll is defective.
Clean the platen.
Replace the head spring L.
Correct the
connection.
Attach the
head spring L
correctly.
Replace the
tape feed
motor ASSY.
Replace the
main PCB ASSY.
Try to print after replace
a new roll.
Is tape feed normal?
Is paper dust on the platen?
Is the head spring L
attached correctly?
Is the motor
connected correctly?
Is the motor harness
damaged?
If replace the main PCB
ASSY, is it OK?
Is the head pressure
1.7kgf 10% at the roller
center?
Does the motor rotate?
Do the gears rotate?
The platen is defective.
Replace the platen ASSY.
The motor ASSY is defective.
Replace the tape feed motor
ASSY.
Replace the gears.