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9-4. EVF Sub contrast Adjustment
1. 2. 3. 4. Set SW109 to �FLUSH� side on the VFK1308P. Connect the oscilloscope to �VCC41� and �VCC9� on the VFK1308P. Open the �EVF adjustment menu�. Select �4. Sub contrast adjustment� in the EVF adjustment menu, and then press the �Enter� key.
5. Adjust level difference between �a� (VCC41) and �b� (VCC9) to become 0±50mV as shown in figure. Note: 1) Signal level can be adjusted by press arrow keys on keyboard. 2) Waveform (figure) can be displayed by press F2 key. 6. When adjustment is finished, press ENTER key to adjusted data write to EEPROM, then change the display indicated as below.
7. Connect the oscilloscope to �F_VCC� and �VCC9� on the VFK1308P. 8. Adjust level difference between �a� (F_VCC) and �b� (VCC9) to become 0±50mV as shown in figure. Note: 1) Signal level can be adjusted by press arrow keys on keyboard. 2) Waveform (figure) can be displayed by press F2 key. 9. When adjustment is finished, press ENTER key to adjusted data write to EEPROM.
