Siemens SIMATIC PANEL PC 877 - Manual (Page 142)

Maintenance and service
12.4 Installing and removing hardware components
SIMATIC Panel PC 877
12-28
Operating instructions, Release 07/2006, A5E00877780-01
How to remove the power supply module
5 Disconnect the power supply
connector from the motherboard.
6 Pull the power supply module out
to the front.
7 Also remove the four screws
holding the steel bracket of the PS
and take it off. These are special
screws with imperial dimensions
(6-32x3/16''-St-G3E).