DETAILED CASE AND MODULE DESCRIPTION
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8-11
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
Table 8-5 CPU III LED Indicators
LED
Function
Description
Name
Color
1 Maint Call
Red
Maintenance Call
On – maintenance call output on (system healthy,
Maintenance Lamp Call is off)
Off – maintenance call output off (system unhealthy,
Maintenance Lamp Call is on)
2 Transfer Health
Red
Transfer Health
On – transfer signal is being generated
Off – transfer signal is not being generated.
3 (AND 1 XR)
Red
AND 1 XR
On – AND 1 XR is energized
Off – AND 1 XR is Deenergized
4 thru 10
AND 2 to AND 8
Red
AND 2 through AND 8
On – AND 2-8 is Energized
Off – AND 2-8 is Deenergized or Not Used
11 Remote Setup
Red
Not Used
Not Used
12 SSCC IV Comm
Red
Vital Comms Status for
indicated link
SSCC IV in vital session with CPU III
13: RDAX A/ VCOM LINK1 Red
Vital Comms Status for
indicated link
VComms Link 1 is in session with another GCP
system
14: RDAX B/ VCOM LINK2 Red
Vital Comms Status for
indicated link
VComms Link 2 is in session with another GCP
system
15: VCOM 1/ VCOM LINK3 Red
Vital Comms Status for
indicated link
VComms Link 3 is in session with another GCP
system
16: VCOM2/ VCOM LINK4 Red
Vital Comms Status for
indicated link
VComms Link 4 is in session with another GCP
system
ECH LAN RX
Grn
Echelon Message
Received
Flashes when the CPU is receiving an ATCS message
via the Echelon LAN.
ECH LAN TX
Red
Echelon Message Sent
Flashes when the CPU is transmitting an ATCS
message via the Echelon LAN.
DSPL COMM RX
Grn
Display Port Message
Received
Flashes when the CPU is receiving data from the
display module.
DSPL COMM TX
Red
Display Port Message Sent Flashes when the CPU is sending data to the display
module.
DIAG COMM (CP) RX
Grn
Diag Port Message
Received
Flashes when the CPU is receiving data from the
communications processor diagnostic (DIAG CP)
serial port.
DIAG COMM (CP) TX
Red
Diag Port Message Sent
Flashes when the CPU is transmitting data on the
communications processor diagnostic (DIAG CP)
serial port.
BACK-PLANE COMM RX
Grn
Backplane Message
Received
Flashes when the VLP is receiving data from the serial
bus.
BACK-PLANE COMM TX
Red
Backplane Message Sent
Flashes when the VLP is sending data onto the serial
bus.
VLP HEALTH
Yel
VLP Health Status
Flashes slowly (1Hz) when the CPU VLP is
functioning normally.
Flashes fast (4Hz) when the VLP is unhealthy
CP HEALTH
Yel
CP Health Status
Flashes slowly (1Hz) when the CP is functioning
normally.
POWER
Grn
Power Indication
On steadily when power is applied to the module.