ABB IRC5 Product Manual page 150

4 Repair activities, controller IRC5
4.11. Replacement of fan in computer unit DSQC639
Continued
Removal (old design of the computer unit DSQC 639)
The procedure below details how to remove the fan in the computer unit.
148
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. Open the computer unit.
WARNING!
Be careful with the fan cable when opening
and removing the cover plate. The fan cable
must not be stretched.
5. Disconnect the fan cable from the mother-
board.
6. Remove the attachment screw.
Note/Illustration
26.
Detailed in section
computer unit DSQC639 on page
Detailed in section
motherboard in computer unit
DSQC639 on page
xx0600002919
• A: attachment screw (1 pcs)
• B: fan cable
3HAC027707-001 Revision: D
Replacement of
122.
Replacement of
127.
Continues on next page