Housing Components - Siemens SIMATIC HMI OP37/Pro Equipment Manual

Servicing/Maintenance
6.1

Housing Components

Overview
The rear panel of the OP37/Pro consists of outer and inner housing rear panels.
For maintenance and repair work, except for replacing the backup battery, it is
necessary to remove the outer rear panel to be able to tilt the PC box of the
OP37/Pro upward.
Figure 6-1
It is sufficient to remove the outer rear panel to replace the following compo-
nents:
Caution
!
If you remove the unit immediately after switching it off, the outer case will
still be hot due to heat dissipation from the heat pipe.
When you open the OP, you must not open the inner rear panel. The screws
are sealed. If those seals are broken, the manufacturer's guarantee on your OP
will be void. Assuming the manufacturer's guarantee for your unit has not
expired, you should have any work on components inside the processor box
carried out by your local Siemens agents.
6-2
Inner rear panel for protection of PC box (do not open!)
Outer rear panel
Inner and outer rear panels
display back-lighting
floppy disk drive.
OP37/Pro Equipment Manual
Release 7/98