Dell 1907FPc
54
9.2 Trouble shooting
9.2.1 Main Board
Note: 1. If replace “Main-Board”, Please re-do “DDC-content” programmed & “White-Balance”.
2. If replace “Power Board” only, Please re-do “ White-Balance”.
No power
No power
Press power key and look if the
picture is normal
Please reinsert and make sure the
AC of 100-240 is normal
Reinsert or check the
power section
X301 oscillate waveforms are
normal
Measure CN601 PIN5/6=12V?
Measure CN601 PIN9/10=5V?
OK
OK
NG
NG
NG
Check power section
Replace U401
Replace X301
OK
NG
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