Main Board - Samsung ProXpress M456x Series Service Manual

3.3.9. Main Board

1. Remove the right cover. (Refer to 3.3.3.)
2. Remove the HDD. (Refer to 3.3.7.)
3. Unplug all cables on main board. Then release the
cables from the harness guide.
4. Remove the harness guide after removing 2 screws.
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5. Remove 4 screws. Then release the main board.
NOTE
• When a main board needs to be exchanged, the
MSOK PBA should be re-installed to the new main
board to retain the system information.
• Shading Test for DSDF Unit must be carried out,
after replacing the main board. (Refer to 4.5.5.3)
3. Disassembly and Reassembly
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