• 2-29 • P1057798-001 rev. B • QLn420 Repair Procedures
4. Place (3) springs on the posts
located on the back of the Spring
Bar as shown.
5. Install the Spring Bar Assembly by
placing the springs over the cap
screws on the back of the Printhead
Assembly.
6. Snap the two tabs (shown) on each
end of the spring bar into their
corresponding holes on the Printer
Frame (circled).
7. Secure the Spring Bar on each end
with a 4-40 x 5/16 PN HD screw
using a torque driver.
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