Canon LV-7215U Service Manual

Contents

Canon LV-7215U Service Manual Manual pdf 55 page image

2.2 Fan Control Adjustment1. Set the lamp mode to "Normal" and then enter the service mode.2. Select group no. “111”, item no. “5” and set data value to “1”.3. Connect a digital voltmeter to test point “TP12V1” (+) and chassis ground (–). Selectitem no. “89” and change data value to adjust voltage to be 6.5 ± 0.1V.4. Connect a digital voltmeter to test point “TP12V2” (+) and chassis ground (–). Selectitem no. “91” and change data value to adjust voltage to be 6.5 ± 0.1V.5. Connect a digital voltmeter to test point “TP12V1” (+) and chassis ground (–). Selectitem no. “90” and change data value to adjust voltage to be 13.5 ± 0.1V.6. Connect a digital voltmeter to test point “TP12V2” (+) and chassis ground (–). Selectitem no. “92” and change data value to adjust voltage to be 13.5 ± 0.1V.7. Select item no. “5” and set data value to “0”.2.3 Clamp Adjustment [PC]1. Receive the 16-step grey scale computer signal with Computer2 [RGB] mode.2. Enter the service mode.3. Connect an oscilloscope to test point “TPG1” (+) and chassis ground (–).4. Select group no. “0”, item no. “0” and change data value to adjust the pedestal leveland black level to be the same level.5. Connect an oscilloscope to test point “TPR1” (+) and chassis ground (–).6. Select item no. “1” and change data value to adjust the pedestal level and black levelto be the same level.7. Connect an oscilloscope to test point “TPB1” (+) and chassis ground (–).8. Select item no. “2” and change data value to adjust the pedestal level and black levelto be the same level.Fig. 3-3Pedestal LebelBlack LebelPart 3: Adjustment3-12