Return - Siemens SIPROTEC 7SJ62 Instruction Manual

9.6

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7SJ62 Manual
C53000-G1140-C121-1
Siemens strongly recommends that no further repairs on defective devices, boards,
or components be done. Special electronic components are used for which proce-
dures for preventing electrostatic discharges must be followed. Most importantly, spe-
cial production techniques are necessary to avoid damaging the wave-soldered multi-
layer board, the sensitive components, and the protective varnish.
If a problem cannot be solved by the procedures in Section 9.5, then it is recommend-
ed that the complete device including the housing be returned to the factory.
The original packaging material should be used for returning a device. If other pack-
aging material is used, then the device and other contents must be provided with pro-
tection 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 of the protective and control settings,
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 addresses
have the default setting.
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Routine Checks and Maintenance
9-13