Troubleshooting (MSO/DPO5000 Series)
Service Level
This section co
ntains information and procedures designed to help you isolate
faulty modules in the MSO5000 Series and DPO5000 Series instruments. If a
module needs t o be replaced, follow the instruction provided in this section. (See
page 4-14, Module Removal (MSO/DPO5000 Series).).
Check for Common
Problems
Use the following table to quickly identify common problems, such as a blown
fuse or loose cable.
Table 4-16: Failure symptoms and possible causes
Symptom Possible cause(s)
Instrument will not power on Power cord not plugged in
Faulty power supply
Faulty COM-E Interface board
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 Main board
Faulty COM-E module
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, reins tall firmware
Corrupted OS image
Flat- panel display blank
Defective cable from Main board to display
Defective cable from Main board to backlighting
display lamp
Defective backlighting display lamp
Faulty display
Faulty COM-E module
Faulty COM-E Interface board
BIOS error messages Refer to the BIOS error message information.
Fault Isolation Procedure
Use the troubleshooting tree for fault isolation. (See Figure 4-9 on page 4-47 .)
4–46 MSO70000/C, DSA70000B/C, DPO70000B/C, DPO7000, MSO5000, DPO5000 Series
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