ABB IRC5 Product Manual page 278

4 Repair activities, controller IRC5
4.21. Replacement of computer power supply in computer unit DSQC623
Continued
Removal
The procedure below details how to remove the computer power supply.
276
Action
1.
DANGER!
Before any work inside the cabinet, please observe
the safety information in section
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.
4. Open the computer unit.
5. Loosen the attachment screw and remove the air
deflector plate.
6. Disconnect the 24V and 0V power cables.
7. Disconnect the connector connected to the mother
board.
8. Disconnect the power cables to the computer fan
units.
Note/Illustration
DANGER - Make
Detailed in section
of computer unit DSQC623 on
page 222.
Detailed in section
of motherboard in computer unit
DSQC623 on page
xx0400001135
•
•
3HAC021313-001 Revision: K
Replacement
Replacement
230.
A
B
A: attachment screw
B: air deflector plate
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