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8.3.4.2
Replacing the power supply unit 850 W
Requirement
• You know the important safety instructions under "Safety instructions on device and
system extensions (Page 47)".
• An original spare part, i.e. a power supply unit of the same type. You can find information
on spare parts under "Hardware accessories (Page 32)".
• Screwdriver TORX T10
• Diagonal cutter
Procedure
1. Fully disconnect the device from the line voltage, see "Switching off the device (Page 74)".
2. Open the device. Be sure to follow the important instructions under "Open the device
(Page 93)".
3. Disconnect the power cables from the drives and the motherboard.
4. Remove the cable ties securing the power cables in the device.
5. Remove the four fixing screws that are marked in the figure below.
6. Pull the power supply unit upward and out of the device.
7. Install the power supply unit.
8. Secure the power supply unit with the screws shown.
9. Connect the cables to the drives and the motherboard.
10.Secure the power supply unit cables in the device again using cable ties.
11.Close the device.
12.Check the safe state of the device.
13.Switch on the power supply unit.
Workstation SIMATIC IPC RW-545A
Operating Instructions, 08/2023, A5E52943278-AA
Device maintenance and repair
8.3 Removing and installing hardware
133
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