[Elecraft] Error Code 00013

[zumbruns at comcast.net]

Hello to all.  While constructing new K3 during Synthesizer Calibation I got the above error code toward the end of the calibration sequence.  Anyone familiar with this?  Also I notice a jumper on connector J64A 'W4'.  Was I supposed to remove this?  I don't recall seeing it before with other constructions and it is not in any of the pictures in the construction manual.  May thanks and 73 to all.  Steve