Section 3 Troubleshooting
3-1. Judging Method When Image Does Not Appear
1. Flow chart
Picture does not appear
Check the indication on the indicator in the lower right of the front panel. (STAND BY)
STBY LED flashes
2 times
When error code is detected from panel.
3 times
When temperature increases.
4 times
When 5 V digital system power voltage decreases (2.5 V or less) or becomes excess voltage (6 V or more)
5 times
When 3.3 V digital system power voltage decreases (1.6 V or less) or becomes excess voltage (4 V or more)
6 times
When 6 V analog system power voltage decreases (3 V or less) or becomes excess voltage (7.2 V or more)
1
2
3
6
1
2
0.3 0.3 0.3 0.3 3
When the STBY LED does not flash, the power supply circuit is defective.
2. How to find PDP unit trouble 1) The power voltage for the PDP is supplied correctly. The power voltages are supplied from the switching regulator board CN9002 and CN9003 to the PDP panel. The three types of power voltage that are 5 V, 65 V and 170 V are supplied.
2) The input signal is supplied to the PDP panel correctly. The LVDS signal is supplied to CN01 of the circuit board in the center of the PDP panel. If no images appears through the above conditions are satisfied, the PDP unit will be defective.
