R&S SMB Troubleshooting
1407.0806.82 3.9 E-6
Fig. 3-1 LED, X101 and X112 location on the Basis Board (1406.6600.02)
Fig. 3-2 LED, X101 and X112 location on the Basis Board (1406.6700.05)
Switch-off
Besides pressing the power switch, the instrument can be switched off in three ways.
After briefly pressing the ON/OFF button on the front panel, the CPU performs a normal system shutdown
and then powers off the power supply via pin 13 of the power supply connector.
Pressing and holding the button on the front panel for longer than five seconds leads to an emergency
shutdown, which is controlled by special hardware on the Basis Board. In this case, no user data can be
saved.
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