Siemens SIMATIC PANEL PC 877 - Manual (Page 141)

Maintenance and service
12.4 Installing and removing hardware components
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
12-27
12.4.7 Removing/Installing the Power Supply
Warning
Only qualified personnel is authorized to exchange the power supply module.
Preparations
1. Disconnect the device from mains and unplug all cables.
2. Open the device.
Removing the power supply module
How to remove the power supply module
1 Remove the hard disk drive bay.
2 Remove the 6 screws (1) and the
cover of the power supply module.
3 Disconnect the power supply
cables of all drives.
4 Remove the 3 fastening screws (1)
(Torx T10).