Sanyo PLC-SW10 Service Manual

Also see for PLC-SW10: Owner's manual

Contents

-26-Electrical AdjustmentsPresetting1. Receive the 16-step grey scale computer signal.2. Set to COMPUTER mode.[R-SIGNAL CENTER ADJUSTMENT]3. Connect a digital voltmeter to test point “TP511” (+)and chassis ground (-).4. Adjust voltage to be 7.30 ±0.05V by using VR521.[G-SIGNAL CENTER ADJUSTMENT]5. Connect a digital voltmeter to test point “TP512” (+)and chassis ground (-).6. Adjust voltage to be 7.30 ±0.05V by using VR551.[B-SIGNAL CENTER ADJUSTMENT]7. Connect a digital voltmeter to test point “TP513” (+)and chassis ground (-).8. Adjust voltage to be 7.30 ±0.05V by using VR581.SIGNAL CENTER ADJUSTMENT1. Receive the 16-step grey scale computer signal.2. Set to COMPUTER mode.3. Connect an oscilloscope to test point “TP3581” (+)and chassis ground (-).4. Adjust “a” to be 5.0 ±0.1V by using VR3561.(a)NRS ADJUSTMENTPC-GAMMA OFF ADJUSTMENT1. Receive the 16-step gray scale computer signal.2. Set to COMPUTER mode.3. Connect an oscilloscope to test point “TP512” (+) andchassis ground (-).4. Enter to the service mode, select item no. “0” andchange data value to adjust “a” to be 1.60 ±0.01Vp-p.[AV-GAMMA OFF ADJUSTMENT]5. Receive the 16-step gray scale video signal.6. Set to VIDEO mode.7. Connect an oscilloscope to test point “TP512” (+) andchassis ground (-).8. Enter to the service mode, select item no. “0” andchange data value to adjust “a” to be 1.70 ±0.01Vp-p.* This adjustment should be carried out beforeadjusting PC/AV-VIDEO ADJUSTMENT-1 and 2.PC/AV GAMMA OFF ADJUSTMENT(a)