4-1
4. Troubleshooting
4. Troubleshooting
4-1. Troubleshooting
Set custom mode as follows before beginning a repair. 1.
B1630N/B1930N B1730NW/B1930NW B2030N B2230N
Resolution:1360x768
V-frequency:60Hz
H-frequency:47.7kHz
Resolution:1440x900
V-frequency:75Hz
H-frequency:70.6kHz
Resolution:1600x900
V-frequency:60Hz
H-frequency:60kHz
Resolution:1920 x 1080
V-frequency:60Hz
H-frequency:67.5kHz
If the screen is blank, check whether the power cord is connected correctly.2.
The circuits to check: 3.
• When the raster does not appear: The Function PCB, Main PCB, I/P PBA
• When 5V is generated but a blank screen is displayed: Main PCB
• When 5V is not generated: I/P PBA
“Press the MENU button and hold down the, “4. (Enter, Source)” button for more than ve (5) seconds to return the monitor to
factory mode.
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