Troubleshooting
6- 54
TDS6000 Series Service Manual
Table 6- 4: Failure symptoms and possible causes (Cont.)
Symptom
Possible cause(s)
PPC appears “dead”; power
light comes on, but monitor
screen(s) is (are) blank,
oscilloscope emits no beeps
H
SO DIMMs incorrectly installed or missing. Missing DIMMs
will cause a POST fault and NLX will beep
H
Defective power pc (PPC) board
H
Hold down on-standby button on the PPC, if system boots,
replace the power supply
Hard disk drive related
symptoms
H
Defective hard disk drive
H
Incorrect hard disk type selected in the BIOS setup
H
Replaceable hard disk drive not installed
H
Power supply failure
H
Corrupted BIOS module firmware, reinstall firmware
H
Hard disk drive not configured as bootable (slave) master
hard disk drive
H
Loose cable
H
Faulty riser board
H
Faulty PPC board
CD-ROM related symptoms
H
Defective CD-ROM
H
Defective CD-ROM drive cable
H
Defective CD-ROM board
H
Incorrect CD-ROM configuration in the BIOS setup
Flat panel display blank
H
Display selection jumper set incorrectly on front panel
board (there are no jumpers on the board when the
oscilloscope is shipped from the factory; this is the correct
default setting)
H
Video adapter set to AGP (connect monitor to NLX VGA
port, enter BIOS, set Video Adapter = PCI)
H
BIOS setting not Advance > Video Configuration > Primary
Video Adapter = PCI
H
Defective cable from front panel board to display adapter
board
H
Defective cable from inverter board to display adapter
board
H
Defective cable from inverter board to backlighting display
lamp
H
Defective backlighting display lamp
H
Faulty display
H
Faulty controller board
H
Faulty inverter board
H
Faulty display adapter board
BIOS error messages
H
Refer to the BIOS error message tables starting on
page 6--64
Summary of Contents for TDS6404
Page 4: ......
Page 14: ...Table of Contents x TDS6000 Series Service Manual...
Page 18: ...Service Safety Summary xiv TDS6000 Series Service Manual...
Page 52: ...Operating Information 2 12 TDS6000 Series Service Manual...
Page 56: ...Theory of Operation 3 4 TDS6000 Series Service Manual...
Page 60: ...Performance Verification 4 4 TDS6000 Series Service Manual...
Page 84: ...Performance Tests 4 28 TDS6000 Series Service Manual...
Page 150: ...Adjustment Procedures 5 2 TDS6000 Series Service Manual...
Page 156: ...Maintenance 6 6 TDS6000 Series Service Manual...
Page 170: ...Removal and Installation Procedures 6 20 TDS6000 Series Service Manual...
Page 228: ...Repackaging Instructions 6 78 TDS6000 Series Service Manual...
Page 232: ...Options 7 4 TDS6000 Series Service Manual...
Page 234: ...Electrical Parts List 8 2 TDS6000 Series Service Manual...
Page 252: ...Mechanical Parts List 10 16 TDS6000 Series Service Manual...