6-4
2.2 LED green, and no OSD and no back light
Is +12V available at L01and L02?
NO
YES
Failure point
Check the power supply (Adapter).
END
Is +12V is available at W05 Pin1, 2, 3: +12V for Inverter, and Pin8: +5V ok?
YES
Failure point
Check JP01 and IC18, and inverter control circuit.
Is 5V available at IC22 Pins 5, 6, 7, 8? (Pin5, 6 are system power; Pins7,8 are panel power)
NO
YES
Failure point
Check power system circuit of +5Vx and VLCD.
Is there a clock signal at IC25 Pins 18,19? (Is CPU working?)
NO
YES
Failure point
Check XR02 (Crystal) ok?
Is +5V is available at W07 Pin1, 2, 3.
NO
YES
Failure point
Check IC22.
Is LVDS signal input to panel? (Is W07 connected to panel correctly?)
NO
YES
Failure point
Check LVDS signal cable and W07.
OK
Failure point
Check panel is ok.
NO
Summary of Contents for LCD1920NX BK - MultiSync - 19" LCD Monitor
Page 4: ...1 1 USER S MANUAL 1 A Version MultiSync LCD1920NX TM ...
Page 49: ...3 6 SYMBOL CODE DESCRIPTION 15 79PZ0004 LCD MODULE 19 0 TFT FLC4 15 ...
Page 100: ...7 9 2 4 3 Circuit diagram ...
Page 172: ...MODEL LCD1920NX LCD MAIN BD 1 7 SCHEMATIC DIAGRAM 10 1 Schematic Diagram ...
Page 173: ...MODEL LCD1920NX LCD MAIN BD 2 7 SCHEMATIC DIAGRAM 10 2 ...
Page 174: ...MODEL LCD1920NX LCD MAIN BD 3 7 SCHEMATIC DIAGRAM 10 3 ...
Page 175: ...MODEL LCD1920NX LCD MAIN BD 4 7 SCHEMATIC DIAGRAM 10 4 ...
Page 176: ...MODEL LCD1920NX LCD MAIN BD 5 7 SCHEMATIC DIAGRAM 10 5 ...
Page 177: ...MODEL LCD1920NX LCD MAIN BD 6 7 SCHEMATIC DIAGRAM 10 6 ...
Page 178: ...MODEL LCD1920NX LCD MAIN BD 7 7 SCHEMATIC DIAGRAM 10 7 ...