LG Flatron L1722P User Manual

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TROUBLESHOOTING GUIDE
1. NO POWER
NO POWER
(POWER INDICATOR OFF)
CHECK KEY CONTROL
CONNECTOR ROUTINE
CHECK DATA LINE
CONNECTION(U201, U202)
NO
NO
CHECK POWER BOARD,
AND FIND OUT A SHORT
POINT AS OPENING
EACH POWER LINE
CHECK 5VS LINE
(OPEN CHECK)
NO
CHECK U201 VCC
XTAL, RESET
YES
CHECK J603
VOLTAGE
PIN5, PIN6 (5V)?
CHECK
U202 PIN 32 VOLTAGE
(5V) ?
IS U201
PIN 5 OR 7
VOLTAGE REPEATED AS
PULSE SHAPE?
NO PROBLEM
1
1
2
1 2
Waveforms
J603-#5,6/U202-#32 U201-#5,7
YES
YES
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LG Flatron L1722P Specifications

General

Brand	LG
Model	Flatron L1722P
Category	Monitor
Language	English