6.Troubleshooting
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3. Turn On the machine and check the LED from the rear-right side of the machine.
[A]: POSTCODE LED8
[B]: BIOS LED
[B]: Abnormal mode: LEDs on the controller board (PCB15)
LEDs 1 to 8 blink constantly.
Example:
1. For self-diagnosis code (BIOS).
2. After the BIOS starts up, LEDs 4,5,7 turn off and LEDs 1,2,3 ,6 turn on and LED
8 blinks. LED 8 is lit or off when there is a problem with the CPU.
• LED is lit when the BIOS is running.
• LED blinks when the OS is running.
[C]: Reconnecting and replacing the USB cable
• Reconnecting the USB cable
USB connector at the operation panel:
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