IBM 5500-01E, Руководство по эксплуатации, установке и обслуживанию

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Appendix B: LED Flash States and Wiring Diagrams
Appendix B 159
Appendix B: LED Flash States and Wiring Diagrams
This section contains the LED (light-emitting diode) flash sequence informa-
tion and wiring diagrams for the 5500 Express IP Control Unit.
LED Flash States
The power light indicates power is available to the unit. Use the AC power
cord to control the power.
The ready light indicates communications are established and the unit is ready
for operation.
The test light indicates the unit is performing diagnostic testing of the compo-
nents and system. Table 80, “LED Flash States -Normal Operation” provides
information about the status of the ready and test LEDs.
Figure 80: LED Flash States -Normal Operation
Test LED Ready LED System Beep Status
On Off None Diagnostics or configuration in
progress
Off On None System is operational
Off Off None Shutdown or powering-up in
progress
Blinking Blinking None Remove the diskette; press Start/
Stop button to restart
On On None Shutdown request recognized
Off Off Every 5 seconds Shutdown complete, safe to power
off
Off Blinking number None Confirm operation number with
button, see Table 82, “LED States
While Using Utility Diskette”