Eiki LC-XG210 service manual Troubleshooting, No Power, Abnormality occurs on the power circuit

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■Troubleshooting

No Power

The possible causes of No Power are listed below. Please check following and refer to the chapter “Power supply and protection circuit” in the Chassis Block Diagrams on the pre- vious page.

1.It does not operate the power supply circuit due to detection of abnormality.

-The abnormality on the secondary power supply lines was detected.

One of the power failure detection diodes detects an abnormal voltage on the power supply. Check the short- age of secondary circuits, ICs, condensers, etc.

Check power supply lines, FAN1, 16V, 14,5V and 15AUDIO on the Audio Board, and 5V, 5VD, 15.5V, 3.3V, 15VP, 9V, 5V1, 5V_DV, 2.5V1, 12V, 3.3_AV, 3.3V_AD1, 3.3V_AD2, 3.3V_AD3, 2.5V1 and 12V on the Main Board.

Check detection diodes, D5511, D5562, D6502, D031 on the Audio Board, and D3102, D3103, D4814, D1561, D451, D1571, D2501, D6381, D3252, D3253, D241, D242, D243, D3103, D3251 on the Main Board.

-The cooling fans was stopped.

One of the power failure detection diodes detects the fan operation stop (FAN_LOCK) signal. Check Fans FN901, FN902, FN903, FN904, FN905, FN906 and FN907.

Check the FAN_LOCK signal. Fan Error : H

And this signal drives Q4891 on and the P-FAIL signal becomes low.

-The abnormal temperature rise inside the projector was detected.

Temperature sensor ICs detect abnormal temperature. Check peripheral circuits and sensor ICs IC2821 on the Sensor Board, IC1871 , IC1872 and IC1873 on the Main Board.

Thermal switch (SW905) detects abnormal temperature. Check peripheral circuits and SW905.

SW905...................... short in normal

SW905 opens when peripheral temperature is over 90°C.

-The abnormality on the lamp ballast board was detected. The lamp ballast board outputs error signal (LAMP_DET) to pin 123 of IC801.

LAMP_DET .............. High in abnormal

-The Interlock switch (SW902) is not turned on.

Check lamp cover fixed correctly.

- Fuse was opened.

Check the fuse on the Line Filter Board.

2.Abnormality occurs on drive signals for power or lamp circuit.

-Abnormality on power starter signals (FAN_DRIVE/ FAN_SW).

The FAN_SW signal is output from pin 137 of IC801 and applied to power supply circuit through Q4807 as the name of FAN_DRIVE. It drives the fans on and off.

FAN_DRIVE .................. High in power on

Check FAN_DRIVE signal, IC801 and peripheral circuits.

-Abnormality on the drive signal (IC_RESET).

The IC_RESET signal is output from pin 2 of IC801 and sent to the power DC board to switch the power on and off.

IC_RESET High in power on

Check IC_RESET signal, IC801 and peripheral circuits.

- Abnormality on the lamp drive signal (LAMP_SW).

The LAMP_SW signal is output from pin 138 of IC801 and sent to IC4891. IC4891 also receives the P-FAIL sig- nal and outputs the drive signal to pin 4 of K8L and the lamp ballast board.

LAMP_SW ................ High in power on

Check LAMP_SW signal, IC801 and peripheral circuits.

3.Abnormality occurs on the power circuit.

- Abnormality on power primary circuit

Check Line filters, thermal switch (SW905), interlock switch (SW902) the Power AC board and Power DC board.

Reset switch

The projector does not allow any controls rarely when the abnormality of power or operation occurs inside the projec- tor. In this case, press the reset switch on the rear panel to restart the projector.

About the LED indicator flashing

The projector will be automatically turned off when the inter- nal temperature of the projector exceeds the normal oper- ating temperature, or the cooling fans stops, or the power supplies in the projector are failed.

-If the TEMP WARNING indicator (red) is flashing, it may detect the abnormal temperature inside the projector. Check the air filters and remove the object near the intake and exhaust fan openings, and wait until the WARNING TEMP indicator flashing stops, and then try to turn on the projector.

-If both of the TEMP WARNING (red) and READY (green) indicators are flashing at the same time, It may defect the cooling fans and power supply circuits. Check fan opera- tion and power supply lines.

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Contents Effective from Reference NO. SM5110512-01How to check Lamp Replace Counter CorrectionLamp replace counter data Original Version Reference NO. SM5110512-00Contents Safety Instructions Safety PrecautionsSpecifications Adjustments after Parts Replacement Optical Adjustments Electrical AdjustmentsCircuit Protections FuseRecommendation Mechanical Disassemblies Cabinet Top removalCabinet Front-Top AV, COM Board & Rear Panel removal Cabinet Front removalAudio Board removal D DSpeaker base removal Optical Unit removalFan & Motor removal Lamp Ballast Board removalLine Filter Board & Interlock SW removal Fans FN901, FN902 removalOptical Parts Disassemblies Projection Lens removalPolarized Glass-In removal Lever-A1Prism ass’y removal and disassembly 2Polarized glass and optical filter mounting directionRelay Lens disassembly Integrator-In disassemblyRelay Lens Condenser Lens disassembly Optical Unit Top removalLocations and Directions Comes to the mirror sideLCD Panel/Prism Ass’y Replacement Important Notice on LCD Panel/Prism Assy ReplacementLCD Panel/Prism Ass’y removal Lamp Replacement How to reset Lamp Replace CounterProcedure Reset the Lamp Replace Counter, see below explanationOptical Adjustments Contrast adjustmentBefore Adjustment Condenser Lens adjustment White b Moving of Slot B Moving of Slot DRelay Lens-Out adjustment Mirror adjustment White Moving of Slot B White b Moving of Slot DElectrical Adjustments IC808 is not defectiveCircuit Adjustments Fan Voltage adjustmentVideo Center adjustment Adjustment ConditionNRS adjustment Pedestal adjustment PCVideo Gain adjustment PC Black Level adjustment PCLuminance adjustment adjustment PC D Ref. Voltage adjustment VideoPedestal adjustment Video D Input adjustment Video12 A/D Input adjustment Component Pedestal adjustment ComponentVideo Gain adjustment Component White Balance adjustmentLuminance adjustment Video Common Center adjustmentTest 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 Inputs & video signal processing stage IC4261A S&H LCD AV Board Main BoardMotor driving circuit Main Board Audio BoardControl Power supply & protection circuit FAN1Troubleshooting No PowerAbnormality occurs on the power circuit No Picture No picture from Video sourceNo picture from DVI source No picture from all of sourcesLens Motor Problems No SoundControl Port Functions System Control & I/O Port Table IC801Control Port Functions Parallel I/O Expander IC1801, M66500FP Name Function Name PolarityIIC 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 Cleaning with air sprayIC 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 Electrical Parts List Read Description in the 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 Board 610 303 4799 ASSY,PWB,A/V MC3BIC UPD78F9801GB-8ES-MC3A FILTER,EMI 25MHZ Front Board 610 304 9502 ASSY,PWB,R/C Front MC3BCOM Board 610 306 0279 ASSY,PWB,COM. MC3ABIC AD8185ARU C3081 403 164 0204 Control Board 610 303 4812 ASSY,PWB,CONTROL MC3BAccessories Key No. Part No DescriptionMechanical Parts List M15 M14Optical Parts L10 Zoom Focus100 L14 L22 L23 102 Mechanical Parts List 103 Key to better communications Canada
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LC-XG210 specifications

The Eiki LC-XG210 is a high-performance LCD projector designed for professional presentations and educational use. This projector stands out due to its impressive brightness, exceptional image quality, and versatile connectivity options, making it an ideal choice for a variety of settings, including classrooms, conference rooms, and auditoriums.

One of the primary features of the Eiki LC-XG210 is its remarkable brightness, with a lumen output of 3,200 ANSI lumens. This high brightness level ensures that presentations remain vibrant and clear, even in well-lit environments. Coupled with a native resolution of XGA (1024 x 768 pixels), the projector delivers sharp text and detailed images, making it suitable for displaying both graphics and video footage.

The LC-XG210 utilizes advanced 3LCD technology, which ensures accurate color reproduction and enhanced color brightness. This technology provides a wide color gamut, allowing users to enjoy rich and lifelike colors without any noticeable color distortion. The projector also features a high contrast ratio, contributing to deeper blacks and more vivid images, further enhancing the overall viewing experience.

Connectivity is a crucial aspect of the Eiki LC-XG210, and it excels in this area with a range of input options. It includes multiple VGA inputs, composite and S-Video inputs, as well as a USB port for easy connection to computers and other devices. This flexibility allows users to seamlessly switch between different sources without the need for additional adapters.

Additionally, the projector is equipped with a powerful built-in speaker that delivers clear audio, eliminating the need for external sound systems in smaller venues. Its lightweight and portable design make it easy to transport, enabling users to set it up quickly in various locations.

The Eiki LC-XG210 also boasts a user-friendly interface and advanced features such as automatic keystone correction, which simplifies the setup process by automatically adjusting the image to fit the screen perfectly. This projector is designed for reliability and longevity, evident in its long lamp life of up to 5,000 hours in eco mode, reducing maintenance costs and enhancing overall value.

In summary, the Eiki LC-XG210 is a versatile and powerful projector that combines high brightness levels, advanced LCD technology, and extensive connectivity options. These features make it an excellent choice for any professional or educational environment, ensuring outstanding image quality and reliability for diverse presentation needs.
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