Sony GY-8240UWD Maintenance Manual page 376

5-13. Troubleshooting
Blinking pattern 4
Details: Illegal slot
LED ON
OFF
1 cycle
Blinking pattern 5
Details: Abnormal reference
LED ON
OFF
Blinking pattern 6
Details: Firmware checksum error
LED ON
OFF
Blinking pattern 7
Details: Data bus check error
LED ON
OFF
Blinking pattern 8
Details: DPRAM verify error
LED ON
OFF
5-160
1 cycle
1 cycle
1 cycle
1 cycle
GY-8240UWD
GY-8240FC