Unit Fails Test 4, Gives Check Sum Errors 6, 7, 10, 11.
Tried to calibrate Generator, but whenever any calibration is performed unit presents with Ram Readback Error when values are input.
Unit Fails Test 4, Gives Check Sum Errors 6, 7, 10, 11.
Tried to calibrate Generator, but whenever any calibration is performed unit presents with Ram Readback Error when values are input.

See posting http://www.medwrench.com/?community.posts/threadNo/4953/subject/Error-code/
In these cases check power/batteries then factory reset is usually the best bet.
Make sure you are exiting the calibration properly. If you don't it will corrupt the cal data.