Checking The Operation State With Led Indication - Sony BCU-100 Maintenance Manual

1-9-5. Checking the Operation State with LED Indication

Operation status can be checked with the POWER LED, BEACON LED, and message LED on the front
panel, and the status LED and error LED inside the front panel.
1. Front panel LED indication
POWER LED BEACON LED
POWER LED / Message LED
The operation status can be checked with the POWER LED and the message LED on the front panel.
State
Power off
AC power on
(Standby state)
Power UP operation
Firmware startup
Normal operation
Shutdown process
Shutdown complete
(Standby state)
BEACON LED
Blinks when the BEACON command is received from the system control PC. This LED lights when the
BEACON switch is pressed. The BEACOM LED on the rear panel operates in the same way as the
BEACON LED on the front panel.
This is to facilitate the recognition of the unit to be checked when the checker is at the rear side.
2. LEDs inside the front panel
By removing the front panel, you can check the operation status with the POWER LED, BEACON LED,
error LED, status LED, and message LED. (For how to remove the front panel, refer to "Section 1
Service Information".)
BEACON LED
POWER LED
Status LED
Error LED
BCU-100 MM
Message LED
POWER LED Message LED
Lights off Lights off
Lights in red Lights off
Blinks in green Lights off
Lights in green Lights off
Lights in green Lights in blue
Blinks in red Lights off
Lights in red Lights off
Message LED
Front LED
1-39 (E)