ABB IRC5 Product Manual page 131

Removal (new design of computer unit DSQC 639)
The procedure below details how to remove the motherboard in the computer unit.
3HAC027707-001 Revision: D
4.7. Replacement of motherboard in computer unit DSQC639
Action
8. Remove the ten motherboard attachment
screws
9. Gently lift the motherboard out.
Action
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
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 27
3. Remove the computer unit.
4. Remove the cover plate.
5. Disconnect the fan cable from the mother-
board.
6. Remove the fan.
7. Remove the Compact flash disk.
4 Repair activities, controller IRC5
Note/Illustration
xx0600002914
• A: attachment screw (10 pcs)
Always grip the board around the edges
to avoid damage to the board or its
components!
Immediately put the board in an ESD
safe bag or similar.
Note/Illustration
26.
Detailed in section
computer unit DSQC639 on page 122
Detailed in section
in computer unit DSQC639 on page 147
Detailed in section
Compact Flash memory in computer
unit DSQC639 on page
Continued
Replacement of
Replacement of fan
Replacement of
153.
Continues on next page
129