Siemens Simatic 620 - Manual (Page 84)

SIMATIC Box PC 620 Expansions
4-24
SIMATIC Box PC 620 Manual
A5E00131465-01
4.8 Removal and Installation of the Motherboard
1. Open the housing as described in Section 4.1.
2. Remove all the modules from the slots (proceed as described in Section 4.4.2).
3. Remove the drive holder as described in Section 4.5.1.
4. Remove the power supply unit as described in Section 4.6.
5. Undo the 7 screws on the motherboard and the 10 hexagon head screws on the
ports.
6. Remove the bus board and the motherboard.
7. Proceed in the reverse order to refit the motherboard.
Fixing screws on the motherboard
Figure 4-19 Fixing Screws on the Motherboard
The motherboard is available as a replacement part without the processor, memory
modules and bus board .