Before you install a new power supply,
please make sure you know which type you have
AND
that the cables are installed correctly!

Please take a moment to print and review the linked documentation

72137C Power Supply Detail

 

The linked .pdf describes how to identify the two types of approved power supplies for DP8 and DP9 printers and the correct cable orientation. Incorrect cabling may damage sensitive electronics.

This image is for reference only, please download the .pdf from the link above.