Troubleshooting; No Operating At All - Daewoo HL720S Service Manual

TROUBLESHOOTING

▶ No operating at all

What you see
Is the power inserted correctly?
Does the Power Adapter operate
correctly?
The Power Adapter
correctly, but the LCD Monitor does
not operate correctly.
Does The Power On/Off and the
LED Operate corretly?
The Power On/Off and the LED
operate correctly, but the OSD
menu doesn't display on screen.
The OSD menu operates correctly
but the image doesn't display on
screen.
The Power On/Off
correctly, but the screen is 'ALL
WHITE'.
The Power On/Off
correctly, but the screen is 'ALL
BLACK'.
Insert the plug correctly referring to the User Manual.
Check the Power Adapter.
The green LED is OK.
operates Check the harness of the FUNC. B/D.
If the program of the MICOM is error, then exchange the
MICOM.
If the AD B/D is error, then exchange the AD B/D.
First, operate the FACTORY SET.
Second, check the Panel Harness that is connected to
the AD B/D.
Check the LAMP Harness of the Panel.
Lastly, exchange the LIPS.
Insert the SIGNAL Cable correctly referring to the User
Manual.
Check the LAMP Harness of Panel and Inverter.
Lastly, Check the LAMP of Panel.
operates The LAMP is OK.
Check the Panel Harness that is connected to the AD
B/D.
operates Check the LAMP Cable.
Check or exchange the LIPS.
Check the Panel Cable.
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HL720S/D Service Manual
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