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Can I put an 8901 A/C Power Supply and an 8905 A/C to -48VDC Converter in an 8916 Chassis Rev level below “D0”?

chassis converter d0 power supply
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Can I put an 8901 A/C Power Supply and an 8905 A/C to -48VDC Converter in an 8916 Chassis Rev level below “D0”?

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No, the combination of an 8901 A/C Power Supply and an 8905 A/C to -48VDC Converter is not compatible with an 8916 Chassis with a Revision level below “D0”. This condition does not exist on higher revisions or with a 6 digit chassis (example – 891620). Although the power indicator LED on the 8905 lights, no -48VDC is measurable on the back plane or provided to the Ring Generator Card or User Cards if they are installed. When an 8916 Revision “D0” or below is present, the 8903 AC to -48DC Converter should be used.. Both the 8904 and the 8906 Ring Generators function properly when powered by the 8903. Additionally, it has been noted that in the 8916 Revision “D0” or lower chassis a jumper may be required across JP2 on the 8906 Ring Generator to insure correct operation. JP2 is located just above the Master/Slave jumper JP1. As with the 8905 the LED will be lit on the unit, but there will not be an output to the system back plane.

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