AMX Enova DGX 8 Instruction Manual page 211

CPU Troubleshooting
First:
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If the System Status LED is still not illuminated or the test switch does not work:
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If the System Status LED on the CPU does not display normal indications:
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Instruction Manual – Enova DGX 8/16/32 Digital Media Switchers
Check all cable connections, check the System Status LED, and execute a test switch.
Remove and re-seat the CPU board to see if the CPU establishes the connection.
Contact technical support (see page 64).
Appendix G – Replacing Timekeeper Battery
211