3 ] Assembling The Thermal Head Assy And Roller Holder Assy - Brother PT-2420PC Service Manual

[ 3 ] Assembling the Thermal Head ASSY and Roller Holder ASSY
(1) Pass the thermal head flat cable through the oblong hole on the chassis sub ASSY.
(2) Align the thermal head ASSY with the positioning boss on the chassis sub ASSY and secure
the thermal head ASSY with the one screw.
Note: When assembling the thermal head ASSY, secure the screw so that it is at the center
of the oblong hole.
(3) Fix the thermal head flat cable with the tape (filamate tape #9510) and bend the cable
slantly as shown in the figure below.
Bending the thermal head flat cable.
(4) Apply half of a rice-grain size of the grease onto the slideway at the rear of the roller holder
ASSY, where the roller release rod slides.
Grease: Shinetsu Silicon silicon grease G501
(5) Assemble the roller release rod onto the pin on the roller holder ASSY. Assemble the roller
holder ASSY onto the shaft on the chassis sub ASSY and fix it with the retaining ring.
Tape fixing position
Approx.
15mm
Fig. 3.1-18 Assembling the Thermal Head ASSY
Retaining ring
Roller holder ASSY
Grease application point
Fig. 3.1-19 Assembling the Roller Holder ASSY
III-13
Thermal head ASSY
Oblong hole
Chassis sub ASSY
Oblong hole
Tape
Pin
Roller release rod
Shaft
Chassis sub ASSY
Screw
Positioning bosses
Thermal head flat cable