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Color monitor
L1752TX
Service manual
Troubleshooting Guide - LG L1752TX Service Manual
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Also See for L1752TX
:
User manual
(28 pages)
,
User manual
(24 pages)
,
User manual
(25 pages)
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Troubleshooting
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NO POWER
(POWER INDICATOR OFF)
CHECK J403
VOLTAGE
PIN5, PIN6 (5V)?
U301 PIN2 VOLTAGE
(3.3V) ?
CHECK KEY CONTROL
CONNECTOR ROUTINE
IS U201
PIN75 (3.3V)
VOLTAGE ?
CHECK U201 PIN 96
1
CHECK U201
Waveforms
1
U201-#96
TROUBLESHOOTING GUIDE
1. NO POWER
YES
CHECK
YES
YES
PULSE
YES
NO
NO
NO
NO
- 16 -
CHECK POWER BOARD,
AND FIND OUT A SHORT
POINT AS OPENING
EACH POWER LINE
CHECK 3.3V LINE
(OPEN CHECK)
NO PROBLEM
CHECK 3.3V LINE
CHECK X-TAL
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This manual is also suitable for:
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