display test.
If an error is detected, go to Procedure 4. If an error is not detected, the display is functioning
properly.
Procedure 4 Connector Check
Color LCD
The display unit has an LCD module and FL inverter board. The Sharp color LCD also
includes a DC-DC converter board. The LCD module and FL inverter board are connected
by four cables. The LCD module and system board are connected by two signal cables.
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 T6400.
If any of the cables are not connected, firmly reconnect them and perform Procedures 1 and
2 again. If the problem still exists, go to Procedure 5.
Plasma Display
The plasma display is connected to the system board through three display cables. 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 T6400.
System Board
PJ3
FL
Inverter 1
PJ2
PJ1
CN2
FL
CN1
Inverter 2
J1A
Plasma
Display
J1B
CN3
DC/DC
Converter
J2
LCD Module
CN1
System Board
J3
PJ803
Contrast Volume
Board
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