Contents

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

 

 

7

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Agilent Technologies 1690, 1680 manual Troubleshooting