Before troubleshooting, setup the PC 's display as below.
- Resolution: 1280 x 720
- H-frequency: 45 kHz
- V-frequency: 60 Hz
If no
picture appears, make sure the power cord is correctly connected.
Check
the following circuits.
- No raster appears: Function PBA, Main PBA, I/P PBA
- 5V develop but no screen: Main PBA
- 5V does not develop: I/P PBA
- If you push and hold the " (Enter/Source)" button for more than 5 seconds, the monitor automatically returns to the factory preset.
NO PICTURE
Yes
|
Check
the connections of the Function Ass'y
|
|
When
pin 4 of CN600 is 0V, is DC 14V measured on pin 2, DC 14V on pin 6, and DC 5V
on pin 7?
|
No
|
Replace
the IP board.
|
Yes
|
||
When
pin 1 of IC600 is DC 5V, is DC 3.3V measured on pin 3?
|
No
|
Check IC600 and its related
circuits
|
Yes
|
||
When
pin 3 of IC602 is DC 3.3V, is DC 1.8V measured on pin 2?
|
No
|
Check IC602 and its related
circuits.
|
All
locations of this page includes Main PBA.
|
NO VIDEO
Check
the signal cable and its Connections
|
||
Does
X300 oscillate correctly?
|
No
|
Check
and replace the related circuits
|
Yes
|
||
Do
the R, G, B inputs appear on R134, R135, and R138?
|
No
|
Check
the input part.
|
Yes
|
||
Do the Hsync and Vsync
waveforms
appear on pins 89 and 90 of IC300?
|
No
|
Check
IC300 and its related circuits.
|
Yes
|
||
Do
output signals appear on pins 2 to 31 and 37 to 40 of CN601?
Yes
|
No
|
Check
IC601 and its related circuits
|
IS DC 5V measured at pins
42,
43, 44 of CN601?
|
No
|
Check
the panel EN signal at R307 and the BL_EL signal at R316.
|
Yes
|
||
Check
the panel and replace it if necessary
|
||
All
locations of this page includes Main PBA.
|
MAIN PBA
