Troubleshooting

No Sound

Please check following and refer to the chapter “Audio signal processing circuit” in the Chassis Block Diagrams on the pre- vious page.

1. No audio signals at AV input circuit.

Check audio signals at pins 1, 12 (Computer1), 5, 14 (Computer2) and 2, 15 (Video) of IC5001 on AV Board. Check IC5001 and peripheral circuits.

2.Incorrect operation of Input mode switching.

Check AU_SW1 and AU_SW2 switching signals at pins 9 and 10 of IC5001 on the AV board. The AU_SW1 and AU_SW2 signals are output from pins 4 and 5 of IC1801 as the name of A_SW1 and A_SW2. See the truth table below for input mode selection on the block diagram.

3. No audio output signal at speakers.

Check audio signals at pins 13 and 8 of IC031 on the audio board.

Check MUTE signal at pin 17 of IC031. Mute On: Low The MUTE signal is output from pin 49 of IC1801.

Mute On : High

Check sound volume signal at pin 2, 6 of IC001.

The VOLUME signal is output from pin 15 of IC281 and it is controlled by IC801 via the IIC bus.

Volume Min.: Low

Check audio signals at IC001, IC031 and peripheral cir- cuits.

4.No power supply at audio circuit.

Check 15V(15VAUDIO) power supply line.

Lens Motor Problems

Please check following and refer to the chapter “Motor driving circuit” in the Chassis Block Diagrams on the previous page.

1.No drive signals supplied at motors

Check drive signals at pins 1 and 2 of K55F for focus motor, pins 3 and 4 of K55F for zoom motor and pins 1 and 2 of K55G for lens shift motor, pins 1 and 2 of K55E for bright motor on the Audio board.

Check drive signals at pins 1 and 7 of each IC, IC5501, IC5531 and IC6501.Check drive signals at pins 9 and 5 of IC5561, Lens Shift.

Check IC5501, IC5531, IC5561 and IC6501 and peripheral circuits. Check motor drive power supply (9V and 16V).

3.No drive signals output from CPU.

The motor dive signals are supplied from IC801, main CPU, via the IIC bus control lines on pins 29 and 30.

4.No key switch signals input to CPU.

Check signals at pins 118 to 120 of IC801 when pressing the key buttons. Check key buttons.

2.No drive signals supplied at motor drive ICs.

Check drive signals at pins 4 and 5 of ICs IC5501, IC5531, and IC6501, at pin 18, 20 of IC5561. They are supplied from pins 4 and 5 for focus drive, pins 6 and 7 for zoom drive and pins 9 and 10 for lens shift drive, pins 11 and 12 for bright drive of IC15581 I/O control IC.

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Eiki LC-XG210 service manual No Sound, Lens Motor Problems
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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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