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SIMATIC PC RI25/45, Technical Description
C79000-G7076-C808-01
First remove the bus module before you start to upgrade the main memory.
Please refer to the notes in chapter 1 of the User’s Guide supplied and read
carefully the ESD guidelines.
1. Switch off the device and separate from the mains.
2. Unscrew the housing and remove the cover (it is not necessary to remove
the two screws on top of the front, just release them).
3. Remove all plugged ISA and PCI modules.
4. Remove the bus module. (Start by unscrewing the 5 screws which are
accessible from their top using a Torx screwdriver, then lift the module
and pull it out of its motherboard socket.)
5. Plug or unplug the SIMM cards as described below. Plug in from the right
to the left slot, unplug in reverse order.
6. Make sure that the cards are correctly plugged in as shown in Figure 2-2.
7. Reassemble the unit in reverse order.
Correctly installed SIMM card.
Incorrectly installed SIMM
card. Short circuit between the
contacts.
!
Caution
Risk of short circuit!
The cards must be installed correctly, otherwise the motherboard or the card
might be destroyed.
Make sure that the contacts of the card and socket are on top of each other.
Replacing/
Upgrading Memory
Cards
How to Proceed
Motherboard