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PN-A601　TROUBLESHOOTING

 7 – 2

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?

No

Replace the abnormal part.

Yes

Yes

Replace the abnormal part.
Replace the I/F PWB.

No abnormality 

No abnormality 

Replace the abnormal part.

Replace the abnormal part.

No abnormality

Abnormality

No abnormality

Abnormality

Abnormality

Check the power cable.  
Check the fuse for breakage.  
Check the I/F PWB.

Check the key PWB and the related parts for any 
abnormality. 
   Check the connection cable.  
   Check the key PWB.

Check the I/F PWB and the related parts for any 
abnormality. 

Replace the abnormal part.
Replace the LED-TCON PWB.

Abnormality

Check the power cable, signal cable.  
Check the LED-TCON PWB.

Check the LED-TCON PWB and the related parts 
for any abnormality. 

No abnormality 

Replace the abnormal part.

Replace the LED driver PWB.

Reinsert the FFC harness.

Abnormality

Check the power cable, signal cable. 
Check that the FFC cable is not inserted diagonally.
Check the fuse for breakage.  
Check the LED driver PWB. 

Check the LED driver PWB and the related parts for 
any abnormality. 

Any problem with the Power Supply PWB 
related items?

ȷIs the fuse blown?
ȷAny problem with the Power Supply PWB?
ȷAny problem with the switch cable?
ȷAny problem with the AC relay PWB?
ȷAny problem with the AC power cord?

Are 13.5V, BU5V, and 12V outputted from the system 
power PWB, and is 24V power outputted from the LED 
power PWB?

When the signal is not inputted, the power save 
function operates to shut off 13.5V, BU5V, and 12V 
from the system power and 24V from the LED 
power PWB.

Since the backlight is turned off when inputting in 
the whole-black screen in the local dimming mode, 
check the input image.

PN-A601　TROUBLESHOOTING

 7 – 3

Is the OSD setting properly configured?

No abnormality

No

No

Yes

No abnormality

Is 19V power output from the system power PWB?

Check the connected optional devices.

Configure the OSD setting again.

Replace the defective part.

Any problem with the Power Supply PWB 
related items?

ȷIs the fuse blown?
ȷAny problem with the Power Supply PWB?

Is the battery power alive?

Is the adjustment lock of "FUNCTION" set to [disabled]?

No abnormality 

Yes

Yes

Consumption

No

No

Replace the battery.

Is the OSD set to non-display?

Set to ENABLE the OSD display (special function).

Clear the setting.

Is the control kit connected?

Yes

No

1

Is the control kit setting set to "External"?

Yes

No

Set the control kit to "External."

Replace the abnormal part.
Connect the cable to the proper terminal.

Replace the abnormal part.

No abnormality

Abnormality

Abnormality

Any problem with the Control Kit or connection cable? 
   Any problem with the connection cable? 
   Any problem with the PWB?
   Is the control kit cable is connected to the sound  
   terminal?

Check the I/F PWB and the related parts for any 
abnormality. 
   Check the fuse for breakage.  
   Check the PWB.

1

Is the control kit setting set to "Built-in"?

Yes

No

Set the control kit to "Built-in."

Replace the abnormal part.

Replace the abnormal part.

No abnormality

Abnormality

Abnormality

Any problem with the key PWB or connection cable? 
   Any problem with the connection cable? 
   Any problem with the key PWB?

Check the I/F PWB and the related parts for any 
abnormality. 
   Check the fuse for breakage.  
   Check the PWB.

PN-A601　TROUBLESHOOTING

 7 – 4

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.

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?

Check the I/F PWB and the related parts.
    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 LCD module and the related parts for any 
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?

Replace the defective part.

Connect the cable properly.

Abnormality

No abnormality

Any problem with the connection cable?
Any problem with the PWB?

Check the LED-TCON PWB and the related parts 
for any abnormality. 

PN-A601　TROUBLESHOOTING

 7 – 5

Any problem with the adjustment/ settings?

No abnormality

No abnormality

No abnormality

Does the signal input correspond to the selected input?

Yes

Yes

Yes

Is the menu displayed with the signal being input?

Replace the expansion board.

Abnormality

Make readjustment/ resetting from the menu.

Select the input source properly.

Replace the graphic board.
Check the connected devices.

Replace the defective part.

Replace the defective part.

Abnormality

Abnormality

No

No

No

DVI connection only
   Any problem with the connected devices?
   Any problem with the resolution of graphic board?

Any defect with the LCD module and related devices? 
   Any defect with the connecting cable?
   Any defect with the LCD control PWB?

Any defect with the video input signal of BNC?
   Any problem with the terminal setting?
   Is the BNC connection proper?
   Any defect with the video cable?
   Is the video signal a particular kind? (Out of support) 

Any defect with the I/F PWB and related  
devices?
   Any defect with the connecting cable?
   Did the fuse blow out?
   Any defect with the PWB?