Eiki LC-XG210 service manual Circuit Adjustments, Fan Voltage adjustment, Video Center adjustment

Page 27

Electrical Adjustments

●Circuit Adjustments

CAUTION: 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 signal

 

 

 

16 steps gray scale pattern

 

1.0Vp-p/75Ωterminated, 16 steps gray

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Video signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

scale (Composite video signal)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Computer signal

0.7Vp-p/75Ωterminated, 16 steps gray

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

scale pattern (XGA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Component Video signal

0.7Vp-p/75Ωterminated, 16 steps gray

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

scale (Component video signal with

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

480p or 1080i format)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

● Picture control mode

“STANDARD” mode unless otherwise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

noted.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

White 100%

Black

100%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Please refer to “Service Adjustment Menu Operation” for entering the service mode and adjusting the service data.

1Fan Voltage adjustment

1.Set the lamp mode to “ECO” with the menu function.

2.Enter the service mode and select group no. “11” and Item no. “5”. Set Data value to “1”.

3.Connect a digital voltmeter to test point “TPFAN1” (+) and chassis ground (-).

4.Select group no. “11”, Item no. “86” and adjust the volt- age to be 4.5 ±0.1Vdc by changing the Data value. Select Item no. “87” and adjust the voltage to be 13.8 ±0.1Vdc by changing the Data value.

5.Connect a digital voltmeter to test point “TPFAN2” (+) and chassis ground (-).

6.Select Item no. “88” and adjust the voltage to be 4.5 ±0.1Vdc by changing the Data value.

Select Item no. “89” and adjust the voltage to be 13.8 ±0.1Vdc by changing the Data value.

7.Connect a digital voltmeter to test point “TPFAN3” (+) and chassis ground (-).

8.Select Item no. “90” and adjust the voltage to be 4.5 ±0.1Vdc by changing the Data value.

Select Item no. “91” and adjust the voltage to be 13.8 ±0.1Vdc by changing the Data value.

9.Select group no. “11” and Item no. “5”. Set Data value to “0”, and set the lamp mode to “Normal” with the menu function.

2Video Center adjustment

1.Receive the 16-step gray scale computer signal with Computer 1 [Analog RGB] mode.

2.Enter the service mode.

3.Connect a digital voltmeter to test point “TP531” (+) and chassis ground (-).

4.Select group no. “5”, Item no. “0” and adjust the volt- age to be 7.50 ±0.1Vdc by changing the Data value.

5.Connect a digital voltmeter to test point “TP501” (+) and chassis ground (-).

6.Select Item no. “1” and adjust the voltage to be 7.50 ±0.1Vdc by changing the Data value.

7.Connect a digital voltmeter to test point “TP561” (+) and chassis ground (-).

8.Select Item no. “2” and adjust the voltage to be 7.50 ±0.1Vdc by changing the Data value.

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Contents Reference NO. SM5110512-01 Effective fromHow to check Lamp Replace Counter CorrectionLamp replace counter data Reference NO. SM5110512-00 Original VersionContents Safety Precautions Safety InstructionsSpecifications Optical Adjustments Electrical Adjustments Adjustments after Parts ReplacementFuse Circuit ProtectionsRecommendation Mechanical Disassemblies Cabinet Top removalCabinet Front-Top D D AV, COM Board & Rear Panel removalCabinet Front removal Audio Board removalOptical Unit removal Speaker base removalLamp Ballast Board removal Fan & Motor removalFans FN901, FN902 removal Line Filter Board & Interlock SW removalLever-A Optical Parts DisassembliesProjection Lens removal Polarized Glass-In removal2Polarized glass and optical filter mounting direction 1Prism ass’y removal and disassemblyRelay Lens disassembly Integrator-In disassemblyRelay Lens Optical Unit Top removal Condenser Lens disassemblyComes to the mirror side Locations and DirectionsLCD Panel/Prism Ass’y Replacement Important Notice on LCD Panel/Prism Assy ReplacementLCD Panel/Prism Ass’y removal Reset the Lamp Replace Counter, see below explanation Lamp ReplacementHow to reset Lamp Replace Counter ProcedureOptical Adjustments Contrast adjustmentBefore Adjustment White b Moving of Slot B Moving of Slot D Condenser Lens adjustment Relay Lens-Out adjustment White Moving of Slot B White b Moving of Slot D Mirror adjustmentIC808 is not defective Electrical AdjustmentsAdjustment Condition Circuit AdjustmentsFan Voltage adjustment Video Center adjustmentBlack Level adjustment PC NRS adjustmentPedestal adjustment PC Video Gain adjustment PCD Input adjustment Video Luminance adjustment adjustment PCD Ref. Voltage adjustment Video Pedestal adjustment VideoPedestal adjustment Component 12 A/D Input adjustment ComponentCommon Center adjustment Video Gain adjustment ComponentWhite Balance adjustment Luminance adjustment VideoTest Points and Locations Service Adjustment Data Table Group 4 L3E07050 Group 6 TC90A69F IP Conversion Dnrynoiseth Dnrysense Dnrymotionth Group 21 MB40C348 Group 22 ICSdata Group 519 RGB PAL Gakaku Diagrams BlockView IC4261 Inputs & video signal processing stageA S&H LCD Main Board AV BoardMain Board Audio Board Motor driving circuitControl FAN1 Power supply & protection circuitTroubleshooting No PowerAbnormality occurs on the power circuit No picture from all of sources No PictureNo picture from Video source No picture from DVI sourceNo Sound Lens Motor ProblemsSystem Control & I/O Port Table IC801 Control Port FunctionsControl Port Functions Name Function Name Polarity Parallel I/O Expander IC1801, M66500FPIIC Bus I/O Expander IC5581, M62320FP Port Functions IIC Bus DA Converter IC281, M62393FP Port FunctionsIIC Bus DA Converter IC3291, M62398FP Port Functions IIC Bus DA Converter IC1531, M62399FP Port Functions IIC Bus DA Converter IC1501, M62399FP Port FunctionsIIC Bus DA Converter IC4881, M62393FP Port Functions Waveform Gvspw Tpgvs DHS Tpdhs DVS Tpdvs Cleaning with air spray CleaningIC Block Diagrams IC Block Diagrams BA7078AF SynC. Detector, IC7201 BA7655 Audio Pre-amp, IC001 IC Block Diagrams IC Block Diagrams M62392 D/A, IC3291 M62393 D/A, IC281, IC4881 M62399 D/A, IC1501, IC1531 ML60851 USB Driver, IC9801 IC Block Diagrams IC Block Diagrams TDA1517ATW Audio Output, IC031 Read Description in the parts list Electrical Parts ListOUT of Circuit Board Assemblied Boards OUT of Circuit Boards610 308 1724 ASSY,PWB,MAIN MH7A Electrical Parts List Electrical Parts List Electrical Parts List Integrated Circuit Capacitor C145 403 283 POS-SOLID C343 403 164 MT-GLAZE Resistor Network MT-GLAZE 1K JA R239 401 2003 R3205 401 105 7909 R414 401 3901 R4829 401 105 7909 MT-GLAZE 3K FA Transformer 610 302 6435 ASSY,PWB,AUDIO MC3A Temp Sensor Board610 301 1950 ASSY,PWB,TEMP.SENSOR MC3A 610 303 4799 ASSY,PWB,A/V MC3B BoardIC UPD78F9801GB-8ES-MC3A FILTER,EMI 25MHZ 610 306 0279 ASSY,PWB,COM. MC3AB Front Board610 304 9502 ASSY,PWB,R/C Front MC3B COM BoardIC AD8185ARU C3081 403 164 0204 610 303 4812 ASSY,PWB,CONTROL MC3B Control BoardKey No. Part No Description AccessoriesM15 M14 Mechanical Parts ListOptical Parts L10 Zoom Focus100 L14 L22 L23 102 Mechanical Parts List 103 Key to better communications Canada
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