What is the Fields Data Type? (It looks to me like it is a String/Text field in the table).
If that is the case change the query slightly:
SELECT dbo_INV_INFSVC.CS_NUM, dbo_INV_INFSVC.NON_TECH_DES, dbo_INV_INFSVC.USER_OPR, dbo_INV_INFSVC.SERIAL_NUM, dbo_INV_INFSVC.NMMI_NUM...