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6. ADJUSTMENT
There is no information to be shown in this chapter.
7. GENERAL INFORMATION
7.1 DIAGNOSIS
7.1.1 TROUBLESHOOTING
- LCD module troubleshooting
1No images
Normal signal is obtained at
each terminal of CN001?
Yes
Circuit current flows normally?
Yes
Video signal is obtained at R654(75 ohms)?
Yes
Video signal is obtained at
Pin-3 of Q201(IR3Y29BM)?
Yes
5V is obtained at Pin-43 of Q201(IR3Y29BM)?
7.5V is obtained at Pin-23 of Q201(IR3Y29BM)?
Yes
POLC(Common reversing signal and square wave)
is obtained at Pin-32 of Q201(IR3Y29BM)?
POLS(Reflection reversing signal and square wave)
is obtained at Pin-33 of Q201(IR3Y29BM)?
Yes
18.5V is obtained at JP851 , -12V is obtained
at JP852 , 3.3V is obtained at JP853 ,
5.3V is obtained at JP809 and
7.5V is obtained at JP808?
Yes
Sync signal is obtained at Pin-36 of Q201(IR3Y29BM)?
Yes
Check the CN001 , inputconnecting
flexible cables and its periphery.
No
Go to Item2 No power.
No
Check CN001 , inputconnecting
flexible cables and its periphery.
No
Check Pin-3 of Q201 ,
C204 and its periphery.
No
Go to Item2 No power.
No
Check Pin-13 , 14 of Q003
(Gate array) and its periphery.
No
Go to Item2 No power.
No
Go to Item3 Out of Sync.
No
AVX-7300
49
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