Manual 7SJ46 Maintenance
C53000-K1174-C002-4 62
2.10 Maintenance
The 7SJ46 does not require any maintenance.
Note!
Siemens strongly recommends that no repairs on defective devices or
boards are done. Special electronic components are used according
to the guidelines to ESD (Electrostatic Sensitive Devices). Most
importantly, special production techniques are necessary to avoid
damaging the wave-soldered multi-layer board, the sensitive
components, and the protective lacquer.
Defective devices should be returned to the manufacturer. The original
packaging material should be used for returning a device. If other
packaging material is used, then the device and other contents must
be provided with protection against shock according to
IEC 60255–21–1 Class 2 and IEC 60255–21–2 Class 1. Before
returning a device, retrieve and save all configuration and setting
parameters and any important information. Note any changes that
were made to the jumpers on the internal printed circuit boards after
the device was first delivered.
Note!
Repaired devices are returned from the factory with all jumpers on the
printed circuit boards set in the original positions according to the
ordering number. All configuration and setting parameters have the
default setting.
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