3-4
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Only for training and service purposes
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4. FLD DISPLAY PART CHECK
NO
YES
YES
YES
YES
Refer to SMPS
Troubleshooting
NO
Replace the related part
Check P3101 assembly
F1+,F2-both terminals:over
3.7V Check power VKK:over
-28V.
YES
FLT light on?
Check
CN101 1,2,3 power.
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
YES
Check
power of each PIN.
IC100
Check→IC304
Data communication.
PIN PIN
27PIN→3PIN STB
26PIN→2PIN DO
28PIN→1PIN CLK
OK
OK
OK
NO
Replace the related part.
NO
Replace the related part.
NO
NO
NO
When 5V fails,check D321SR35
input and output power.
IC100 27 PIN→STB
28 PIN→1PIN CLK
Check Data output.
Check 26 PIN→DO
→DATA input.
YES
YES
YES
Check the related part
YES
Check the related part
OK
YES
FLD DISPLAY CHECK
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