Troubleshooting Guide - LG 32LX330C Service Manual

1. Check the booting Voltage
Make sure the Stand-by Voltage
P401 4,5,6 pin ,
L403 : +8.8V_ST
YES
Make sure the Normal voltage
4,5,6,7,8 pin
:13.2V
YES
Make sure the CLK of X101
Is 24MHz
YES
Make sure the PWR_ON of
P401
1pin : 3.3V
YES
Make sure the Output Voltage of
power block
IC400 : +5V, IC400 : +1.1V,
IC404: +1.5V, Q406 : +3.3V
YES
Make sure the voltage of
LVDS Power
Q405 : 13.2V
YES
Make sure the output of
LGE2134(IC101) LVDS
YES
Make sure
the Inverter control and error
P401 11pin : High
YES
Exchange the LCD Module
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Only for training and service purposes

TROUBLESHOOTING GUIDE

Make sure the Power
NO
Connector
or Exchange the L403
Make sure the Power
NO
Connector
Exchange the L403, L415
NO
Exchange the X101
NO
Re-download of Firmware
NO
Exchange the IC400, IC404,
Q406
NO
Exchange the Q405
NO Exchange the
LGE2132(IC101)
Or Main board
NO
Exchange the circuit or check
The LCD module
Make sure
YES
the disconnection of
Main board 13.2V circuit
NO
Exchange the circuit
Exchange
NO
the LGE2134(IC101)
Or Main board
- 17 -
YES
Exchange the
Circuit board
board
LGE Internal Use Only