4-2. How to Check Fault Symptom
No power & no picture
Diagnostics
Check the LED of function
No
Check link of AC voltage
Yes
Open the BACK-COVER and check the
10P power cable
No
Connect the 10p power cable
Yes
Check the A13V of BD207
No
Change the SMPS
Yes
Check the Q206 base, voltage must be
no larger than 0.5V
No
Change the Main Assy
Yes
Check the A5V of L202, B13V of Q202,
B5V of Q207.
No
Change the Main Assy
Yes
Check the A3.3V/B3.3V of Main IC
Check B1.8V of DDR IC
IC201#1, IC205#3, IC204#5
No
Change the Main Assy
Yes
Check the 13V of LVDS
Q204#1/2/5/6
No
Yes
Change the LVDS
No
Change the PANLE
4-2
4. Troubleshooting
