Brother PT-1090 Service Manual page 70

B
Any faintly
printed character?
N
Replace the main PCB ASSY and
regulate the motor speed.
(Refer to Chapter III, Section 3.2,
PRINT1 submode.)
-
Y If there is any foreign material on the thermal
print head, clean it up.
-
Check that the platen 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 bottom cover are centered in the two
oblong holes in the head ASSY.
Platen roller
IV - 5
Head surface
Platen center
Positioning bosses
Head ASSY
Positioning bosses
Head ASSY