Siemens 670 V2 Operating Instructions Manual page 79

Procedure
1. Isolate the device from power supply.
2. Open the switch cabinet.
3. In order to swing down the computer unit, loosen the knurl screws attaching the computer
4. Swing open the computer unit. The connectors on the rear of the control unit are now
5. In order to dismount the computer unit, remove the cable connectors K1 and K2 between
6. Two mounting rails, whose ends are in the form of lugs, are screwed to the control unit.
7. Put the computer unit down carefully.
8. If necessary, also remove the control unit depending on its design: Secure the control unit
Figure 9-1 Swinging the computer unit away from the control unit, as seen from above
Panel PC 670 V2/870 V2, Control unit
Operating Instructions, Edition 03/2004, CD Documentation and Drivers
9.3 Separating the control unit and the computer unit in the central design
to the rear of the control unit.
accessible.
the computer unit and the control unit.
Lift the computer unit vertically out of these lugs.
against falling out and unscrew it. Or remove the clamps which secure the control unit to
the installation wall, as shown in the mounting cut-out in the dimensions diagram.
Maintenance and Service
9-3