Ts-470U-Rp/Sp - QNAP HS-251 Hardware User Manual

4. Fasten the screw tightly.
5. Turn on the NAS.
Note: To replace a failed power supply unit, turn off the NAS. Then remove the failed unit
safely and repeat steps 3-5 above to install a new power supply unit.
10.2

TS-470U-RP/SP

Note: The following instructions should only be performed by an authorized and trained
technician.
Follow the steps below to replace a failed power supply unit on the TS-470U-RP/SP.
1. Turn off the NAS.
2. Press the green lever and remove the defective power supply unit.
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