1. Remove these parts in order, if any:
• "Computer cover" on page 49
• "Optical drive" on page 50
• "Front bezel" on page 51
2. Disconnect the front fan cable from the system board.
Removal steps
Rear fan
Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
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M90t Gen 3 Hardware Maintenance Manual