Service manual

980358-001 Rev. A 31
Main Print Circuit Board Assembly Replacement - 2844 980358-409A
Preparation
Protect against static discharge. Your work area must be static-safe and include
a properly grounded conductive cushioned mat to hold the printer and a
conductive wrist strap for yourself.
Check your work when connecting the print head cables—For 2844
models, the right bundle of wires plugs into the right connector (J17) and the left
bundle plugs into the left connector (J19) on the main PCBA. For 2443 models,
the right bundle plugs into J3 and the left bundle plugs into J2 on the main
PCBA. If connected wrong, permanent damage can result to the printer.
Perform the removal steps of the Bottom Case Replacement procedure (980358-405).
Removal
1. Use a #1 Phillips driver to remove the
screw 1 that secures the board 2 to the
lower frame
!.
2. Unplug the wire bundles, ribbon cables and
ground wire from their connectors on the
board. Make note of their locations and
routes.
Assembly
1. Plug the wire bundles, ribbon cables and
ground wire into their connectors on the
board.
2. Align the protective separator
" against
the bottom frame.
3. Align the board onto the standoffs
#.
4. Replace the screw that hold the board to the front standoff and use a #1 Phillips driver to tighten
it.
Assembling the Printer
Perform the assembly steps of the Bottom Case Replacement procedure (980358-405). Check the
installation. Turn on the printer and run the AutoSense routine to get a dump mode printout. This
action tests the printer's media drive and printing capabilities.
MOVIE