5-6
N9927-90003
Theory of Operation
FieldFox Analyzer
Front Panel Group
A2 LCD Assembly
The A2 LCD assembly contains a 6.5-inch, 640 x 480 TFT color LCD with associated drive circuitry and
backlight inverter.
The LCD backlight is created by LED’s connected in parallel stacks. Backlight brightness is a function
of the backlight power that ranges from 22 to 27 volts. Refer to
for more
information.
The backlight LED’s are arranged along the top and bottom edges of the display. There are three stacks
on each edge.
Summary of Contents for FieldFox MW N9913A
Page 8: ...Contents 4 Service Guide N9927 90003 Contents ...
Page 9: ...N9927 90003 1 1 1 Safety and Regulatory Information ...
Page 16: ...1 8 N9927 90003 Safety and Regulatory Information FieldFox Analyzer Regulatory Information ...
Page 17: ...N9927 90003 2 1 2 General Product Information ...
Page 27: ...N9927 90003 3 1 3 Tests and Adjustments ...
Page 37: ...N9927 90003 4 1 4 Troubleshooting ...
Page 50: ...4 14 N9927 90003 Troubleshooting FieldFox Analyzer Measurement Group Troubleshooting ...
Page 51: ...N9927 90003 5 1 5 Theory of Operation ...
Page 81: ...N9927 90003 6 1 6 Replaceable Parts ...
Page 95: ...N9927 90003 7 1 7 Repair and Replacement Procedures ...
Page 140: ...7 46 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Post Repair Procedures ...
Page 141: ...N9927 90003 8 1 8 General Purpose Maintenance and Service Procedures ...
Page 149: ...N9927 90003 Appendix 1 Appendix A ...
Page 156: ...Index 4 N9927 90003 Index ...