Sanyo PLC-XU32 Service Manual

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Sanyo PLC-XU32 Service Manual Manual pdf 26 page image

-26-After replacing the Power Board, PF.C. Board, readjustthe Output voltage adjustment as follows.1. Connect a digital voltmeter to pins 1 (+) and 3 (-) ofK6D.2. Adjust the voltage by using VR611 as following.AC Input Reading230V 370V ±2Vor 120V 340V ±2VCaution:Be sure to connect the lamp when taking this adjust-ment. 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 per-formance and product safety.[Adjustment Condition] Input signalVideo signal .......................... 1.0Vp-p/75Ω terminated, 16 steps gray scale (Composite video signal)Computer signal...................... 0.7Vp-p/75Ω terminated, 16 steps gray scale pattern (XGA) Picture control mode ...................... “STANDARD” mode unless otherwise noted.Note:* Please refer to “Service Adjustment Menu Operation” for entering to the service mode and adjusting the servicedata.Electrical AdjustmentsOutput Voltage adjustment1. Enter the service mode and select group no. “11” anditem no. “0”. Set data value to “1”.2. Connect a digital voltmeter to test point “TP12V1” (+)and chassis ground (-). Select item no. “1” and changedata value to adjust voltage to be 7.5 ±0.1V.3. Connect a digital voltmeter to test point “TP12V2” (+)and chassis ground (-). Select item no. “2” andchange data value to adjust voltage to be 9.0 ±0.1V.4. Select group no. “11” and item no. “0” and set datavalue to “3”.5. Connect a digital voltmeter to test point “TP12V1” (+)and chassis ground (-). Select item no. “3” and changedata value to adjust voltage to be 13.5 ±0.1V.6. Connect a digital voltmeter to test point “TP12V2” (+)and chassis ground (-). Select item no. “4” and changedata value to adjust voltage to be 13.5 ±0.1V.Fan Voltage adjustment [For PLC-XU32/XU37]1. Enter the service mode and select group no. “11” anditem no. “0”. Set data value to “1”.2. Connect a digital voltmeter to test point “TP12V1” (+)and chassis ground (-). Select item no. “1” and changedata value to adjust voltage to be 8.0 ±0.1V.3. Connect a digital voltmeter to test point “TP12V2” (+)and chassis ground (-). Select item no. “2” andchange data value to adjust voltage to be 9.0 ±0.1V.4. Select group no. “11” and item no. “0” and set datavalue to “3”.5. Connect a digital voltmeter to test point “TP12V1” (+)and chassis ground (-). Select item no. “3” and changedata value to adjust voltage to be 13.5 ±0.1V.6. Connect a digital voltmeter to test point “TP12V2” (+)and chassis ground (-). Select item no. “4” and changedata value to adjust voltage to be 13.5 ±0.1V.Fan Voltage adjustment [For PLC-XU33/XU38]