Hardware Component Overview
Relay Contacts” on page34. The LCD on the craft interface reports thecause
of the alarm, as described in “LCD Alarm Mode” on page 30.
To deactivate red and yellowa larms,press the button labele d ACO/LT (for“alarm
cutoff/lamp test”), whichis located to the left of the alarm LEDs. Deactivating an
alarm turns off both LEDs and deactivatesthe device attached to the corresponding
alarm relay contacton the CIP. However,the LCD continues to report the alarm
message until you clear the condition that caused the alarm.
Table9 describes the alarm LEDs and alarm cutoff button in more detail.
Table 9: Alarm LEDs and Alarm Cutoff/Lamp Test Button
Shape Color State Description
Red On steadily Critical alarm LED—Indicates a critical condition
that can cause the router to stop functioning.
Possible causes include component removal,
failure, or overheating.
Yellow On steadily Warning alarm LED—Indicates a serious but
nonfatal error condition, such as a maintenance
alert or a significant increase in component
temperature.
——Alarm cutoff/lamp test button—Deactivates red
and yellowalarms. Causesall LEDs on the craft
interface to light (for testing purposes), when
pressed and held.
LCD and Navigation Buttons
A four-line LCD is located inthe craft interface, along with six navigation buttons.
The LCD operatesin two modes, as described in the following sections:
LCDIdleModeonpage29
LCD Alarm Mode on page 30
LCD Idle Mode
During normal operation, the LCD operates in idle m ode and reports
current status information, as shown in Figure12.
Craft Interface 29