Sanyo PLC-SW10 Service Manual

Also see for PLC-SW10: Owner's manual

Contents

-24-1. Receive the 16-step gray scale video signal.2. Set to COMPUTER mode.[R-OFFSET ADJUSTMENT]3. Connect an oscilloscope to test point “TP2212R” (+)and chassis ground (-).4. Enter to the service mode, select item no. “275” andchange data value to adjust the pedestal level andblack level to be same level.[G-OFFSET ADJUSTMENT]5. Connect an oscilloscope to test point “TP2222G” (+)and chassis ground (-).6. Select item no. “276” and change data value toadjust the pedestal level and black level to be samelevel.[B-OFFSET ADJUSTMENT]7. Connect an oscilloscope to test point “TP2232B” (+)and chassis ground (-).8. Select item no. “277” and change data value toadjust the pedestal level and black level to be samelevel.Pedestal level = Black levelPC-OFFSET ADJUSTMENTAfter replacing the Power Board, PF.C. Board, readjustthe Output voltage adjustment as follows.1. Connect a digital voltmeter to pins 1 (+) and 3 (-) ofK6C.2. Adjust the voltage by using VR01 as following.AC Input Reading230V 380V ±2V120V 372V ±2VCaution:Be sure to connect the lamp when taking this adjust-ment.OUTPUT VOLTAGE ADJUSTMENT Circuit AdjustmentsCAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of perfor-mance and product safety.[Adjustment Condition] Input signalVideo signal .......................... 1.0Vp-p/75Ω terminated, 16 steps gray scale (Composite video signal)Component Video signal ........ 0.7Vp-p/75Ω terminated, 16 steps gray scale (Component video signalwith 480i, 480p, 575p, 720p, 1035i or 1080i format)Computer signal...................... 0.7Vp-p/75Ω terminated, 16 steps gray scale pattern (SVGA) Picture control mode ...................... “NORMAL” mode unless otherwise noted.Note:* Please refer to “Service Adjustment Menu Operation” for entering to the service mode and adjusting the servicedata.Electrical Adjustments1. Connect a digital voltmeter to test point “TP6602” (+)and chassis ground (-).2. Enter to the service mode, select item no. “29” andset data value to “1”.3. Adjust the voltage to be 12.1 ±0.1Vdc by usingVR6601.4. Check that the voltages at test points “ TP6601” (+),“TP6603” (+) and chassis ground (-) are 13.0 to13.5Vdc.5. Select item no. “29” and set data value to “0”.FAN VOLTAGE ADJUSTMENT