Read Sharp PN-A601 (serv.man3) Service Manual online
CHAPTER 7. TROUBLESHOOTING
PN-A601 TROUBLESHOOTING
7 – 4
4. THE DISPLAY DOESN’T SHOW/ DISPLAY ABNORMALITY
Check the adjustment and setting for any abnormality.
Readjust and reset with the menu.
Is input selection set to signal input?
Adjust the input source properly.
Replace the graphic board.
Check the connected devices.
Check the connected devices.
Replace the abnormal part.
Replace the defective part.
Is the menu displayed under the signal input state?
Replace the LCD module.
No abnormality
Yes
No abnormality
Yes
Yes
Abnormality
Abnormality
Abnormality
No abnormality
Abnormality
No
No
No
HDMI connection only
Any defect with the connected devices?
Is the graphic board resolution proper?
Any defect with the connected devices?
Is the graphic board resolution proper?
Check the I/F PWB and the related parts.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the video input signal for any abnormality.
Check the video cable.
Check that the video signal is not a special one
(out of support).
Check the video cable.
Check that the video signal is not a special one
(out of support).
Check the LCD module and the related parts for any
abnormality.
Check the connection cable.
Check the LCD control PWB.
abnormality.
Check the connection cable.
Check the LCD control PWB.
Any problem with the I/F board related items?
Any problem with the connection cable?
Is the fuse blown?
Any problem with the PWB?
Any problem with the connection cable?
Is the fuse blown?
Any problem with the PWB?
Replace the defective part.
Connect the cable properly.
Abnormality
No abnormality
Any problem with the connection cable?
Any problem with the PWB?
Any problem with the PWB?
Check the LED-TCON PWB and the related parts
for any abnormality.
for any abnormality.
