- Ultra Electronics Printers Instructions

3461/07/01 ISSUE 2 PRINTHEAD INSTALLATION & COMMISSIONING SPEC. DCR No. 26106

2. Removing old printhead/assembly

(1) Remove the dye-film and

dye-film carrier from the

printer.

(2) If a tye-wrap is fitted to the

grey ribbon cable plug on the

back of the printhead, cut this

tye-wrap taking great care not

to cut the ribbon cable itself.

(3) Disconnect both cables from

the printhead.

(4) If a head bar is fitted, remove the securing

screw at each end and lift away the head bar.

This should leave the earthing strap loose at the

right hand side of the chassis cover.

If no head bar is fitted, disconnect the earthing

strap from the reatining screw at the left hand

side ot the printhead assembly

(5) Disengage the two lugs at the ends of the

two nylon side brackets by spreading apart the

legs of the nylon brackets until the lugs just

clear the chassis cover, swing them forwards

and allow them to rest against the leading edge

of the chassis cover.

N.B.

Before removing the printhead

assembly completely from the printer,

take careful note of how the two

springs are attached at the rear and

each side of the assembly.

(6) Using both hands, hold the

printhead assembly at each side by

the nylon brackets, and move it

upwards. Note : as the assembly

disengages from the chassis cover,

the two springs will push it forwards

and care must be taken not to lose

the springs as the printhead is lifted

clear.

(7) Place the printhead assembly on a bench with the printhead and its labels at the bottom.

Undo and remove the printhead pivot screw (see diagram) and its two washers .

(8) Slide the printhead backwards (plugs first) out of the heatsink.