MCK pbxgateway Administrator's Manual page 181

Troubleshooting
Step #3 ROM Countdown
After the diagnostics run the ROM goes through a short countdown on the
console. During this time the WAN1 LED flickers green. The WAN1 LED
goes solid green and the WAN2 LED 'flickers' green while the runtime image
is being loaded into memory. WAN2 goes solid green when the runtime
image is successfully loaded into memory. Control is then passed to the
runtime image (see Step #4).
Step #4 Runtime Image
The runtime image first turns all system status and Port Status LEDs off,
except for the Power LED (which is solid green if there are no self-test
failures or solid yellow if there are self-test failures).
During initialization the runtime image flickers Port Status LED1 while it's
downloading the Programmable Logic Device (PLD), and then makes Port
LED1 solid once the PLD download is complete. Similar flickering and solid
LED patterns are used when downloading each Digital Signal Processor
(DSP), where Port LED2 is the signaling DSP, and Port LED3-LED8 are the
voice DSPs. So when the runtime image is starting up you see each Port LED
1 through 8 successively flicker and go solid until all eight are solid.
After the PLD and DSP downloads are complete the Port LEDs drop into
their normal operating patterns. (Refer to Table 6-5 for more information)
6-10
Issue 2.1 December 1999