Maintenance
4-3
SIMATIC Panel PC 670 / 870 Operating Unit, Equipment Manual
Edition 07/02
To remove the computing unit completely, continue as follows:
3.
Remove the cable connectors K1 and K2 of the operating unit (see Fi-
gure 4-2) from their corresponding counterparts on the computing unit.
Two mounting rails are screwed to the computing unit. The two ends of
these rails are formed as clips (see Figure 4-1).
4.
Lift the computing unit off horizontally by removing these clips from the
corresponding slits on the operating unit (see Figure 4-2 below).
5.
Place the computing unit down carefully.
Display
cable K2
2
)
I/O USB
cable K1
2
)
2
) Cable folded: 200 mm longer than illustrated
1
)
1
)
1
) Slits for mounting rail
1
)
1
)
Fig. 4-2
Rear side of operating unit with positions of interfaces
If necessary, you can now remove the operating unit by loosening the six
clamps which secure the operating unit to the mounting panel (see Figure
3-3).
Reinstall and swing the computing unit back into place in the reverse order
to that described above.
Removing the
computing unit
completely
Securing the
computing unit
