Quick Reference Guide
The switch is operated only infrequently and is recessed so
that it cannot be operated inadvertently. See Figure 1-11 for
the location of the switch. Both switch positions are labeled
on the underside of the unit.
To operate the switch, please use a ball-point pen
("retractable ball-point") up to a diameter of 1.7 mm or a blunt
instrument of the same size. Insert the extended point
between the operating lever and the housing cutout on the
side with the operating lever, and slide the operating lever
into the opposite position (see Figure 1-11).
Pointed objects (for example, needles) or
breakable objects (for example, pencils) must not
be used for operating the switch.
Function of the Power LED
S 24 V DC supply
S Fatal hardware fault
detected per software
Ready for use*
* After switching on, a few seconds will elapse before the
LED lights up
Function of the active LED
The active LED shows that the adapter on the MII/DP bus is