CSSCAN output of invalid chars - how to get it with SQL?

Hi,
csscan reports something like this when it finds invalid chars:


User  : PM_SUP_FSL_FCV
Table : FSL_COMPONENT_VALUES
Column: STRING_VALUE
Type  : VARCHAR2(4000)
Number of Exceptions         : 3
Max Post Conversion Data Size: 678

ROWID              Exception Type      Size Cell Data(first 30 bytes)
------------------ ------------------ ----- ------------------------------
AAGx8jABPAAAvzUAA2 lossy conversion         Kavaliersh<E4>user Schloß KW mbH
AAGx8jABPAAAvzUAA3 lossy conversion         Schlo<DF>platz
AAGx8pABMAAAkvGAAH lossy conversion         <D6>zkaya
------------------ ------------------ ----- ------------------------------

How to print varchars in sql to get un printable chars as hex codes in such brackets? I want to use a WHERE clause like

... where whatever(STRING_VALUE) like '%<E4>%'