Siemens 7482255 Rev 01 Page 9 of 22
October 2002
Chapter 6 - Troubleshooting
3.0 Diagnostic Indicators
Diagnostic light emitting diodes (LEDs), located on the side of the host module,
provide indications of the boot progress, the system status, and some
subsystem failures. The legend shown in Figure 6-1 depicts the LED status for
the Off (extinguished), On (illuminated), and flashing (On–Off) conditions.
Table 3-1, “Component Designations,” on page 3-2 identifies the acronyms
that are used in this chapter to identify devices.
Figure 6-2 shows the status of the LEDs as they are progressively
extinguished during the boot sequence. Figure 6-3 shows the LED status after
boot is completed, both with and without the DIMAQ-IP module connected.
Figure 6-1 LED Legend
LED Off
LED On
LED Cycling On and Off
LED Legend
The LEDs in the following diagrams are
depicted according to the legend pre-
sented to the left.
Note: The LED designated with the V character represents the 5V supply. This
LED is illuminated when 5V power is available.
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