Troubleshooting Guide - LG FLATRON L1730S; FLATRON L1930S Service Manual
Chassis no. : cl-64
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Also See for FLATRON L1730S; FLATRON L1930S:
- Specifications (2 pages) ,
- User manual (25 pages)
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TROUBLESHOOTING GUIDE
NO POWER
(POWER INDICATOR OFF)
CHECK J603 VOLTAGE
PIN5, PIN6 (5V)?
YES
CHECK
U202 PIN 32 Voltage
(5V) ?
YES
CHECK KEY CONTROL
CONNECTOR ROUTINE
YES
IS U201
PIN11(3.3V)
VOLTAGE REPEATED AS
PULSE SHAPE?
YES
CHECK DATA LINE
CONNECTION(U201, U202)
1. NO POWER
NO
NO
NO
- 18 -
CHECK POWER BOARD, AND
FIND OUT A SHORT POINT
AS OPENING
EACH POWER LINE
CHECK 5VS LINE
(OPEN CHECK)
NO PROBLEM
CHECK U201 VCC
XTAL, RESET
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