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Procedure 3
Connector Check
The Display unit has an LCD module, FL, panel close switch, and FL inverter board. The FL
and FL inverter board are connected by cable. The LCD module and system board are con-
nected by signal cable as shown below. Any of these cables may be disconnected.
Disassemble the display unit and check the following cable connections. Refer to chapter 4.
Replacement Procedures, for more information about how to disassemble the computer.
If any of these cables is not connected, firmly reconnect it and repeat Procedures 1 and 2. If
the problem still exists, perform Procedure 4.
Procedure 4
Replacement Check
The FL, FL inverter board, LCD module, and system board are connected to the display
circuits. Any of these components may be damaged. Refer to chapter 4, Replacement Proce-
dures, for instructions on how to disassemble the computer and then perform the following
checks:
If the FL does not light, perform Check 1.
If characters are not displayed clearly, perform Check 3.
If some screen functions do not operate properly, perform Check 3.
If the FL remains lit when the display is closed, perform Check 4.
Check 1
Replace the FL unit with a new one and test the display again. If the problem still
exists, perform Check 2.
2-26
Figure 2-3 Display connection
610CT
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