Lenovo HX1310 Installation And Service Manual page 832

2. If the problem persists and there is no other CPU with the same error indication, replace the
system board.
3. (Trained technician only) Replace the system board (see Removing the system board and
Replacing the system board). (n = microprocessor number)
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HX1310, HX2310-E, HX3310, HX3310-F Installation and Service Guide