Lenovo ThinkSystem SR645 V3 - Page 229

Step 5. Remove the following components from the processor board.
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1 Cable wall (1)
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2 Power supply unit air duct
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3 Cable wall (2)
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4 Handle
Figure 134. Removing components from the processor board
Step 6. Separate the processor board from the supporting sheet metal.
Appendix A. Hardware disassembling for recycle 219