Fujitsu M10-4 Service Manual page 43

Figure 2-14 Location of the fan unit LED
Table 2-14 LED on the fan unit and its states
Name Color
CHECK Amber
Figure 2-15 Location of the power supply unit LED
LED
LED
State Description
On Indicates that an error has occurred.
Blinking Indicates that the component requires
maintenance.
(This function is also referred to as the locator.)
Off Indicates the normal state.
Chapter 2 Understanding the System Components 29