4 Repair activities, controller IRC5
4.12. Replacement of motherboard in computer unit DSQC639
2373HAC021313-001 Revision: K
© Copyright 2004-2008 ABB. All rights reserved.
Removal (new design of computer unit DSQC 639)
The procedure below details how to remove the motherboard in the computer unit.
8. Remove the ten motherboard attachment
screws
xx0600002914
• A: attachment screw (10 pcs)
Always grip the board around the edges
to avoid damage to the board or its
components!
9. Gently lift the motherboard out. Immediately put the board 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.
5. Disconnect the fan cable from the mother-
board.
6. Remove the fan. Detailed in section Replacement of fan
in computer unit DSQC639 on page 262
7. Remove the Compact flash disk. Detailed in section Replacement of
Compact Flash memory in computer
unit DSQC639 on page 272.
Continued
Continues on next page
To Next Page
Loading...
Need help?
General
