Read Sharp PN-S655 (serv.man3) Service Manual online
PN-S655
TROUBLESHOOTING
5 – 1
CHAPTER 5. TROUBLESHOOTING
3. 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.
Digital connection only
Is the graphic board resolution proper?
Is the graphic board resolution proper?
Replace the graphic board.
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).
Replace the abnormal part.
Is the menu displayed under the signal input state?
Replace the abnormal part.
Replace the abnormal part.
2. The remote control does not work.
Is the battery power alive?
Consumption
Replace the battery.
Replace the abnormal part.
Replace the abnormal part.
1. The power is not supplied (The LED does not light up)
Is the AC cord properly inserted?
No
Insert the AC cord properly.
Is the power SW turned ON?
Is the power SW free from any abnormality?
Is the power SW free from any abnormality?
No
Replace the abnormal part.
Yes
No
Replace the abnormal part.
Replace the abnormal part.
No abnormality
No abnormality
Replace the abnormal part.
No abnormality
Abnormality
No abnormality
No abnormality
No abnormality
No abnormality
No abnormality
Yes
Yes
No abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
No
No
No
Does the main power PWB supply power voltages of STB5V/
19V/24V?
19V/24V?
Note: If the signal input is not supplied, the power save
function is operated to interrupt the output of 24V from
the sub power source.
the sub power source.
Check the power PWB and related sections for any
abnormality.
Check the fuse for breakage.
Check the main power PWB.
Check the switch cable.
Check the filter block.
Check the AC power cord.
abnormality.
Check the fuse for breakage.
Check the main power PWB.
Check the switch cable.
Check the filter block.
Check the AC power cord.
Check the I/F PWB 1 and the related parts for any abnormality.
Check the power cable.
Check the fuse for breakage.
Check the I/F PWB 1.
Check the power cable.
Check the fuse for breakage.
Check the I/F PWB 1.
Check the key PWB and the related parts for any abnormality.
Check the connection cable.
Check the key PWB.
Check the connection cable.
Check the key PWB.
Check the key PWB and the related parts for any abnormality.
Check the connection cable.
Check the key PWB .
Check the connection cable.
Check the key PWB .
Check the I/F PWB 1 and the related parts for any abnormality.
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 I/F PWB 1 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 LCD module and the related parts for any abnormality.
Check the connection cable.
Check the LCD control PWB.
Check the connection cable.
Check the LCD control PWB.
Check the I/F PWB 1 and the related parts for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
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