H8DCE User's Manual Overheat LED Connect an LED to the JOH header to provide warning of chassis overheat- ing. See the table on the right for pin defi nitions. CD1 Header The 4-pin CD1 header allows you to use the onboard sound for audio CD playback. Connect the audio cable from your DC derive to this header. See the table on the right for pin defi nitions. AUX1 Header The 4-pin CD1 header allows you to use the onboard sound for audio CD playback. Connect the audio cable from your DC derive to this header. See the table on the right for pin defi nitions.
3rd Power Supply Fail Alarm Connect the appropriate 4-pin cable from your power supply to J3P to provide you with warning of a power supply failure. The warning signal is passed through the PWR_LED pin to indicate a power failure. See the table on the right for pin defi nitions. Note: This feature is only available when using triple redundant power supplies.
2-14 Overheat LED Pin Defi nitions (JOH) Pin# Defi nition 1 12VDC 2 OH Active CD1 Pin Defi nitions Pin# Defi nition 1 Right Signal 2 Ground 3 Ground 4 Left Signal AUX1 Pin Defi nitions Pin# Defi nition 1 Right Signal 2 Ground 3 Ground 4 Left Signal 3rd Power Supply Fail Alarm Pin Defi nitions (J3P) Pin# Defi nition 1 P/S 1 Fail Signal 2 P/S 2 Fail Signal 3 P/S 3 Fail Signal 4 Reset (from MB)