System Status Led; Figure 57 - Communication Leds - Ca & Ec Control Boards; Table 19 - System Status Led - Keyscan CA250B Technical Instructions

Figure 57 - Communication LEDs - CA & EC Control Boards
Cut View of
CA8500B
KI-00188E-04-13

System Status LED

The system status LED is multi-color – red, amber and green – indicating the current system status as
outlined. The control board also has a piezo that beeps under certain LED states.
LED System Status
Color/State
Red – solid The main processor is held in reset and not operating. This can be caused when S1 is depressed or the
main processor supervisory circuit's critical PCB voltages are not within normal operating parameters. The
on-board piezo emits a steady tone while in this mode.
Red – flashing The CA or EC control board is in clear memory mode. The on-board piezo emits a cycle of 2 short beeps
and then a pause while the control board is in this mode.
Amber – solid The CA or EC control board has not communicated to the Client software since its last system reset or
clear memory.
Amber - flashing The CA or EC control board's last communication with the Client software was 3 minutes or greater.
Green – solid The CA or EC control board has communicated to the Client software since its last system reset or clear
memory.
Keyscan Inc. – Technical Guide (PC109x - 04.15)
READER 5 READER 4 READER 3
COM LEDs are in the same
location on all CA & EC
control boards.
COMMUNICATION STATUS
TD1 RD1 TD2 RD2 TD3 RD3 TD4 RD4
Location of COM LEDs

Table 19 - System Status LED

READER 2 READER 1
S3
S2
ACU Protective
Cover
S1
89