3 ] No Printing Is Performed - Brother TD-2020 Service Manual

[ 3 ] No printing is performed.

Tape feed is normal but cannot print.
cable connected correctly?
If replace the main PCB ASSY,
is it OK with the print test?
The thermal head is defective.
Replace the thermal head ASSY.
Is the direction
of the roll correctly?
Y
Is the print head
Y
N
N
Set the roll in the correct
direction.
N
Correct the connection.
Y
The main PCB is defective.
IV - 4