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7
5 Troubleshooting
To install the fan guard 78
To use the flowcharts 79
Troubleshooting the Agilent 1680A,AD-series 80
To check the power-up tests 87
To test the power supply voltages 87
To test the LCD display signals 89
To test disk drive voltages 90
To verify the CD-ROM 92
To recover the operating system 93
Troubleshooting the Agilent 1690A,AD-series 95
To verify connectivity 99
To test the power supply voltages 100
General Troubleshooting 103
To run the self-tests 103
Acquisition board status LEDs 106
To test the logic analyzer probe cables 107
To check the BNC Trigger input/output signals 110
To test the auxiliary power 112
6 Replacing Assemblies
1680A,AD-series disassembly/assembly 114
Prepare the instrument for disassembly 114
To remove the chassis from the sleeve 114
To remove the acquisition board 115
To remove the power supply 117
To remove the hard disk drive 118
To remove the CD-ROM drive assembly 119
To remove the flexible disk drive 120
To remove the PCI boards 122
To remove the motherboard 123
To remove the front panel assembly 126
To disassemble the front panel assembly 128
To remove the distribution board 129
To remove the inverter board 130
To remove the fans 131
To remove the cable tray 132