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Chapter 4
Troubleshooting
No Display troubleshooting
No Display troubleshooting
If the E5071C displays nothing despite it is powered from proper ac power line, isolate the
failure in accordance with the procedure shown in Figure 4-3.
Connect the keyboard to the E5071C rear panel USB connector, turn the power on and start
trouble isolation. The methods of trouble isolation are described in the procedural step 1 to
5.
Figure 4-3
No display trouble isolation procedure
e5071cse1119
No Display Trouble
Isolation start
No
Check rear panel fan and
dc monitor LEDs on PCA PCI DSP Card
Replace CPU Mother Board ASSY
PCA DIGITAL Bridge or PCA PCI DSP Card
Connect external monitor
Replace power supply
Check flat cable between PCA Front
Key and LCD DIGITAL Bridge
Check LCD backlight
Displayed
on monitor?
Flat cable OK?
Fan ok
and LEDs light?
No
No
No
LCD backlight ok?
Replace LCD_T PANEL ASSY
Replace Inverter Unit Assembly
Replace flat cable
Yes
Yes
Yes
Replace Analog Base Module
Check system fans inside
System fans ok?
No
Yes
1
2
5
4
3
Summary of Contents for E5071C
Page 14: ...14 Contents ...
Page 168: ...168 Chapter2 Performance Test E5071C Performance Test Record ...
Page 212: ...212 Chapter4 Troubleshooting To configure the CPU Mother Board Assembly and BIOS ...
Page 262: ...262 Chapter5 Replaceable Parts Power Cables and Plug Configurations ...
Page 326: ...326 Chapter6 Replacement Procedure Probe Power and Power Switch Board Replacement ...
Page 332: ...332 Chapter7 Post Repair Procedures Post Repair Procedures ...
Page 360: ...360 AppendixB System Recovery Calibration of the Touch Screen ...
Page 364: ...364 AppendixC Firmware Update Firmware Update ...
Page 365: ...365 D Power Requirement D Power Requirement ...