Other Maintenance Work On Op37; Opening The Op37 Housing - Siemens simatic hmi op27 Equipment Manual

Maintenance/Upkeep
19.4

Other Maintenance Work on OP37

Other maintenance/service work on the OP37 involves replacing the back-
lighting and floppy disk drive. To do this, however, the housing must be
opened.
19.4.1

Opening the OP37 housing

Safety notes Observe the following safety notes before starting to open the housing:
!
!
19-10
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Warning
S
Repairs to the OP must be performed by suitably qualified and authorized
technical personnel.
S
The user may be exposed to considerable risk as a result of unauthorized
opening and unqualified repairs.
Caution
S
The back-lighting operates at voltages > 1000 V. Make sure that the OP is
disconnected from the power supply.
S
Always follow the ESD guidelines in the Appendix when working on open
devices.
S
Do not undo any sealed screws. The manufacturer's warranty for your
device ceases if the seal is broken.
OP27, OP37 Equipment Manual
Release 05/99