Open the panels on both sides of the system
Open the fan grid by opening the 4 screws with the help of Metric Combination Ring 7mm (Fig 1)
Disassemble the Laser Driver card PN AS71010.

5. Replace the non working fan with a new one

6. Connect back the Laser Driver card PN AS71010

- Screw in the 4 Allen screws which are marked with purple arrows ( fig 3)
- Screw in the 4 Philips screws which are marked with green arrows ,make sure the position is correct ( fig 2)
- connect back the 2 connectors, which are marked with purple arrows (fig 2)

7. Re-start the system and check if the Error is resolve.

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