Fld Display Part Check - LG FB163U Service Manual

4. FLD DISPLAY PART CHECK

FLD DISPLAY CHECK
YES
Check
CN101 1,2,3 power.
YES
F1+,F2-both terminals:over
3.7V Check power VKK:over
-28V.
YES
Check
P3101 connection
condition and power F1+,F2-
both terminals:over 3.7V
Check power VKK:over -28V
Check 4.5 PIN:5.6V
YES
Check
IC304 PT6324
power 50 PIN VKK:-28V
9.52 PIN +5V
YES
IC100
Check¡IC304
Data communication.
PIN PIN
27PIN¡3PIN STB
26PIN¡2PIN DO
28PIN¡1PIN CLK
YES
FLT light on?
YES
OK
LGE Internal Use Only
NO
Refer to SMPS
Troubleshooting
Check P3101 assembly
Check
NO
power of each PIN.
OK
NO When 5V fails,check D321SR35
input and output power.
Check the related part
OK
IC100 27 PIN¡STB
NO
28 PIN¡1PIN CLK
Check Data output.
Check 26 PIN¡DO
¡DATA input.
Check the related part
OK
3-24
YES
NO
YES
YES
NO
YES
YES
YES
NO
YES
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Replace the related part
Replace the related part.
Replace the related part.
Only for training and service purposes