June 11, 2015, 715004754 Rev. A
Page xii
5.5.5 Setting pulse periods ....................................................................... 86
5.5.6 Setting display contrast.................................................................... 87
5.5.7 Displaying system information........................................................... 87
5.6 Optimizing performance ............................................................................ 87
5.6.1 Attenuation and sensitivity guidelines................................................. 87
5.6.2 Operating the trace and scale functions .............................................. 89
5.7 Powering-off ............................................................................................ 91
5.7.1 Removing buffered mobile phase....................................................... 91
6 Maintenance Procedures .......................................................... 93
6.1 Taking care of the flow cell ......................................................................... 93
6.2 Decontaminating the fluid path ................................................................... 93
6.3 Replacing fuses ........................................................................................ 95
6.3.1 Identifying a faulty fuse ................................................................... 95
7 Error Messages, Diagnostic Functions, and Troubleshooting .... 97
7.1 Error messages ........................................................................................ 97
7.1.1 Startup error messages.................................................................... 97
7.1.2 Operational error messages .............................................................. 98
7.2 Performing diagnostic functions .................................................................. 98
7.2.1 Accessing the diagnostic functions ..................................................... 98
7.2.2 Using the Optimize LED diagnostic function....................................... 100
7.2.3 Using the input and output diagnostic functions................................. 100
7.2.4 Display and keypad diagnostic tests................................................. 101
7.2.5 Using the Other diagnostic functions ................................................ 102
7.3 Troubleshooting ...................................................................................... 104
7.3.1 Hardware troubleshooting............................................................... 105
7.3.2 Chromatography troubleshooting..................................................... 105
7.3.3 Poor peak resolution ...................................................................... 111
7.3.4 Incorrect qualitative or quantitative results ....................................... 112
A Safety Advisories ................................................................... 115
A.1 Warning symbols .................................................................................... 115
A.1.1 Specific warnings .......................................................................... 116
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