Bios Module Leds - Scientific Games TWINSTAR UPRIGHT Service Manual

CPU Overview

BIOS Module LEDs

The BIOS provides LEDs on the top to identify status information.
Figure 49 BIOS Module Example
The following table provides information about the BIOS module LED indicator lights:
Table 8 BIOS Module LED Indicators
LED
Power
POST Start
POST Done
Validation Pass
NOTE
For additional information, see your Service Manual and User Guide 1456703:
CPU-4X Control Subsystem.
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TwinStar™ Upright (SG-1V43-ST) Service Manual 1489211 [B]
Chapter 4 CPU Control Subsystem
Color Meaning
Red When illuminated, the BIOS/ JUR SPI module has been properly inserted and the CPU power is on.
Yellow When illuminated, the BIOS has begun the boot-up process, and POST is executing.
Green When POST has successfully completed the green LED is illuminated and control is transferred to the UBE loader to
validate the media.
Blue When illuminated, the UBE loader has completed the validation of the media and the image is deemed valid. The
UBE then transfers the control to the OS/ game. If any of the media fails to validate, the LED remains unlit and the
control is not transferred.
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