Maintenance and service
11.1 Removing and installing hardware components
SIMATIC Rack PC 847B
Operating Instructions, 06/2008, A5E02203168-01
85
11.1.8
Removing the Operator Panel
Preparation
1.
Isolate the device from mains and disconnect all connecting cables.
2.
Open the device.
Removing the operator panel
How to remove the operator panel
1. Loosen the mounting screws (1) on
the inside of the device front (3
x TORX)
2. Unplug the cable from the display
module
11.1.9
Removing the motherboard
Preparation
1.
Isolate the device from mains and disconnect all connecting cables.
2.
Open the device.
Removing the motherboard
How to remove the motherboard
1.
Remove all modules from their slots.
2.
Removing the bus board
3.
Disconnect all cables from the motherboard, noting down their positions while doing so.
4.
Remove the four screws of the CPU heatsink.
5.
Remove the four screws and six hexagonal bolts from the motherboard.