Brother PT-H100 Service Manual page 73

B
Any faintly
printed character?
N
Replace the main PCB ASSY.
Enter the inspection mode (see Section 3.2)
and do the following:
- Check solder points 1 to 3 and A to C for
destination (keypad version) and head
ranking in INFO submode, respectively.
- Regulate the motor speed in PRINT1
submode.
-
Y If there is any foreign material on the thermal print head,
clean it up.
-
Check that the platen roller is set into place and works
normally.
- If the printed characters become faint in cycles, the tape
feed sub roller gear in the roller holder ASSY may be
deformed. Replace the roller holder ASSY.
-
Check that the two positioning bosses provided on the
frame ASSY are centered in the oblong hole and the notch
part in the head ASSY.
Platen roller
Tape feed
sub roller
Roller holder
ASSY
IV - 8
Head surface
Positioning bosses
Platen center
Head
ASSY