4 Repair activities, controller IRC5
4.13. Replacement of DDR SDRAM memory on motherboard in computer unit DSQC639
3HAC021313-001 Revision: K242
© Copyright 2004-2008 ABB. All rights reserved.
Removal (new design of the computer unit DSQC 639)
The procedure below details how to remove the DDR SDRAM memory on the motherboard
in the computer unit.
5. Disconnect the fan cable from the mother-
board.
6. Gently lift the DDR SDRAM memory straight
up.
xx0600003033
• A: DDR SDRAM memory
NOTE! Always grip the memory around
the edges to avoid damage to the
memory or its components!
NOTE! Immedialety put the memory in
an ESD safe bag or similar!
Action Note/Illustration
Action Note/Illustration
1.
DANGER!
Before any work inside the cabinet, please
observe the safety information in section
DANGER - Make sure that the main power
has been switched off! on page 28.
2.
esd
WARNING!
The unit is sensitive to ESD, before handling
the unit please observe the safety
information in section WARNING - The unit is
sensitive to ESD! on page 29
3. Remove the computer unit Detailed in section Replacement of
computer unit DSQC639 on page 226.
4. Remove the cover plate.
Continued
Continues on next page
To Next Page
Loading...
Need help?
General
