Siemens PC 670 - Manual (Page 86)

Maintaining and Extending the Computing Unit Release 04/02
4-26 Panel PC 670 Computing Unit, Equipment Manual
4.10 Processor Upgrade
You can boost the performance capability of your computing unit by installing other
processors. Proceed as follows to replace the processor (the numbers in brackets
relate to Figure 4-21):
1. Disconnect the fan cable connector from the motherboard.
2. Remove the heat sink, secured by a metal bar.
3. Press the lever in the direction of the arrow (1) and pivot it up as far as
possible (2).
4. Lift the old processor from the slot (3).
5. Insert the new processor in the slot ensuring that the marking on the top side of
the processor coincides with the position of the marking (4) on Slot A.
Caution
The marking on the top side of the processor may be covered by the heat sink. In
such cases, align the processor with the marking in the row of pins at the bottom
of the processor.
6. Pivot the lever back down until it locks into place (5).
7. Disassemble the unit fan.
8. Secure the heat sink with the metal bar.
9. Connect the fan cable connector back on the motherboard.
10.Assemble the unit fan.
Caution
If the processor is driven with a frequency higher than permitted, it may be
destroyed or cause loss of data or loss of data integrity.
A
3 2
1
4 5
Figure 4-21 Upgrading the processor