4 ] No Printing Is Performed - Brother P-touch QL-1050 Service Manual

[ 4 ] No printing is performed.

Tape feed is normal but cannot print.
Is the print head
cable connected correctly?
Is the head cable of
the correct color
connected?
Is the signal for
thermal head normal?
Is VH in the stand-by
status or printing 25V 1.5V?
The thermal head is defective.
Replace the thermal head ASSY.
N
Y
N
Y
N
Y
IV- 6
Correct the connection.
Any devices on the main PCB are
defective or soldering is defective.
Replace the main PCB ASSY.
The power supply PCB is defective.
Replace the power supply PCB.