Troubleshooting (DPO7000 Series, MSO70000/C Series, DSA/DPO70000B/C Series)
Table 4-6: Failure symptoms and possible causes (cont.)
Symptom Possible cause(s)
Front panel light comes on (instrument
powers on), but one or more fans will not
operate
Faulty fan cable
Defective fan assembly
Faulty power supply
Faulty μATX Motherboard
Faulty CPU
μATX Motherboard power problem
Hard disk drive related symptoms
Defective hard disk drive
Incorrect hard disk type selected in the BIOS setup
Replaceable hard disk drive not installed
Power supply failure
Corrupted BIOS module firmware, reinstall firmware
Loose cable
Corrupted OS image
DVD-ROM r elated symptoms Defective CDRW-ROM
Defective CDRW-ROM drive cable
Defective CDRW-ROM board
Incorrect CDRW-ROM configuration in the BIOS setup
Flat-panel display blank
Video adapter set to Integrated (connect monitor to μATX VIDEO port, enter
BIOS, set Video Adapter = PCI)
BIOS setting not Advance > Video Configuration > Primary Video Adapter = PCI
Defective cable from display adapter board to power interface board
Defective cable from inverter board to display adapter board
Defective cable from inverter board to backlighting display lamp
Defective backlighting display lamp
Faulty display
Faulty power interface board
Faulty power interconnect board
Faulty inverter board
Faulty display adapter board
BIOS error messages Refer to the BIOS error message information
MSO70000/C, DSA70000B/C, DPO70000B/C, D PO7000, MSO5000, DPO5000 Series 4–17
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