Dell 5230dn Mono Laser Printer Service Manual page 396

WARNING: When removing the system card assembly from the machine, ensure that the LVPS assembly
connection (C) does not become damaged.
B
C
7. Remove the system card assembly.
8. Remove any remaining screws securing the system card assembly to the metal box.
9. Remove the system card assembly.
Replacement Warning: Ensure that all ground wires are properly replaced.
Replacement Warning: When replacing the system card assembly, ensure that the LVPS assembly
connections (C) are properly aligned and inserted into the system card assembly, or damage will occur.
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Service Manual