HP Agilent Keysight 6623A DC System Power Supply 3 Channels . Condition is For parts or not working. Channel 1 and three have HDW Error messages need service to clear the error. All electronic components and board appeared to be ok no sign of gross failure

Channel one
7 V, 5 A or 20 V, 2 A

Channel two
7 V, 10 A or 20 V, 4 A

Channel three
20 V, 2 A or 50 V, 1 A