Sanyo PLC-XL40 Service Manual

Also see for PLC-XL40: Owner's manual

Contents

-5-[Adjustment Condition]● Input signalVideo signal ......................... 1.0Vp-p/75W terminated, 16 steps grayscale (Composite video signal)Computer signal.................... 0.7Vp-p/75W terminated, 16 steps grayscale patternComponent Video signal ....... 0.7Vp-p/75W terminated, 16 steps grayscale (Component video signal with480p, 575p, 70p or 1080i format)● Picture control mode............... “STANDARD” mode unless otherwisenoted.Note:* Please refer to “Service Adjustment Menu Operation” for entering the service mode and adjusting the servicedata.White 100% Black 100%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.Electrical Adjustments16 steps gray scale patternAfter replacing the Power Board readjust the Outputvoltage adjustment as follows.1. Connect a digital voltmeter to pins 1 (+) and 3 (-) ofK6d.. Adjust the voltage by using VR611 as following.AC Input Reading30V 380V ±VCaution:Be sure to connect the lamp when taking this adjust-ment.Output Voltage adjustment* This adjustment is not required even if the powerboard is replaced because this adjustment is carriedout before parts shipment.WARNING : USE UV RAdIAtIoN EYE ANd SKINPRotECtIoN dURING SERVICEING1. Enter the service mode.. Connect a digital voltmeter to test point “tPFANA” (+)and chassis ground (-). Select group no. “111”, itemno. “94” and change data value to adjust voltage tobe 5.2 ±0.1V.3. Connect a digital voltmeter to test point “tPFANB”(+) and chassis ground (-). Select item no. “96” andchange data value to adjust voltage to be 5.2 ±0.1V.x Fan Control adjustmentWARNING : USE UV RAdIAtIoN EYE ANd SKINPRotECtIoN dURING SERVICEING1. Enter the service mode.. Panel Type CheckSelect group no. “290”, item no. “0”. Check the datavalue as follows;Data value: 0 For L-Type of LCD PanelData value: 0 For R-Type of LCD panel3. Panel Type SettingSelect group no. “290”, item no. “1” and change datavalue from 10 to 0 or 0 depending on your LCDPanel type. When the data value reaches 0 or 0,it returns to 10 quickly. The gamma-characteristicschanges according to your selection.* Refer to the item "LCD Panel/Prism Ass'y removal"for the panel type check.z Panel Type Check and Setting