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2 Troubleshooting Procedures 2.9 Display Troubleshooting
Procedure 3 Connector and Cable Check
LCD Module is connected to system board by an LCD/FL cable. FL inverter board is also
connected to system board by an LCD/FL cable. In addition, fluorescent lamp is connected to
FL inverter board by HV cable. Their cables may be disconnected from system board or FL
inverter board. Disassemble the computer following the steps described in Chapter 4,
Replacement Procedures.
If the connection is loose, reconnect firmly and restart the computer. If the problem still
occurs, go to Procedure 4.
<FL inverter>
CN3
CN1
<System board>
CN5000
LCD/FL cable
HV cable
CN2CN4
<LCD module>
Fluorescent lamp
QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL]
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