Brother P-Touch QL-1050 - 2 ] the Tape Is Not Detected Correctly

IV-
4
[ 2 ] The tape is not detected correctly.
Y
Y
N
N
N
Y
Do not recognize a tape type correctly.
Is a tape loaded correctly?
Load a tape correctly.
Is the main PCB ASSY
installed correctly?
Install the main
PCB ASSY correctly.
Is input signal normal?
The main PCB ASSY is defective.
Replace the main PCB ASSY.
The sensor is defective.
Replace the main PCB
ASSY.