1 Circuit configuration 11 PWB configuration

Used for the phase decode processing of the RGB video signals, the level adjustment, and the generation of various timing signals. Used for the level shift processing of the panel drive timing signals for the LCES PWB (SVGA) and the LCEX PWB (XGA), and also for the generation of panel auxiliary signals. The above-mentioned two types of PWBs are connected through the FFC (Flexible Flat Cable) cables of 40 pins (POSV) and 30 pins (POST).

12 Preliminary arrangements before adjustments

2) Remove the Main PWB Assy, the LCES or LCEX PWB Assy, and the Key PWB Assy. 3) Remove the Cover (suction air duct) Assy (Part No. 24FT7461), the Suction air duct (SK) Assy (Part No. 24FT7451), and the Optical cover (SK) (Part No. 24F32021). Taking out the filter Assy B in advance facilitates the removal of the optical cover (SK). 4) Mount the dummy load and turn on the power source circuit. 5) Zoom the lens to maximum image size. 6) Adjust the focus of the screen overall by means of the lens...

13 Method of shadow adjustment in each color

Vertical shadow adjustment for G and R (when the shadow color is magenta, cyan, or blue) CD Replace the FL vertical adjusting screw. (Part name Nylock screw (HLSS4*6), Part No. 24N04751) Then, follow the working procedures below by the use of a ball driver (opposite side 2.0mm). (2) Sufficiently loosen the FL vertical fixing screws (Part name special screw (PL-HM2.5*6), Part No. 12851741) (in 2 positions). (3) Loosen the FL horizontal fixing screws by one turn (Part name special screw...

16 Fl Sassyit1 Sassyit2 Sassybarrier 2 Separate Base Barrier 1 Separate Basethermostat

(1) Remove the two screws (T), and take out the (4) Remove the two screws and take out the BARTHERMOSTAT. RIER 1 (SEPARATE BASE). (2) Remove the two screws (2), and take out the IT1 (5) Remove the two screws , and take out the FL SASSY. SASSY. (3) Remove the two screws (3), and take out the BAR- (6) Remove the two screws , and take out the IT2 RIER 2 (SEPARATE BASE). SASSY.

1introduction

Introduction to the MultiSync VT440 VT540 Projector E-6 Getting What's in the Getting to Know Your MultiSync VT440 VT540 Projector E-8 Front Side Rear Side Top Terminal Panel Remote Control Setting Up Your Selecting a Using a Tabletop or Distance Ceiling Reflecting the Wiring Connecting Your Connecting Your Macintosh Computer E-19 Connecting an External Connecting Your DVD Connecting Your VCR or Laser Disc Player E-23 General Enlarging and Moving a Using the Menu Menu Menu Descriptions &...

33 Panel auxiliary signal

This signal output is generated from the LC panel signal processing circuit G A, YAMAG (IC3701), on the same main board (MAIN PWB). The panel auxiliary signal (3.3Vp-p) is processed for level shifting to the level (5.0Vp-p, (2.5V 7.5V)) required to pre-charge the video line in the LC panel by the aid of the level shift ICs (IC5201, 5202, 5203 IC6201, 6202, 6203) located on the LC driver boards (LCES PWB LCEX PWB). Since then, the processed signal is fed to the LC panel via the diamond buffer of...

41 Video signal processor block

The composite video signal passes through the 6dB amplifier (IC1100 MM1031XM) and the low-pass filter (FL1113), and enters Pin 41 of the video decode IC (IC1104 CXA2139S) at 1Vp-p. The NTSC and PAL signals are led to the IC's internal SW and 6dB amplifier, and the resultant output is fed to Pin 6. The signals are further sent to the 3-line Y C separator circuit (IC1101 TC9090AF). The signals from Y C separation are returned again to the video decode IC. The composite SECAM signal and the B W...

Carrying the Projector

Always carry your projector by the carrying handle. NOTE When moving the projector or when it is not in use, cover the lens with the lens cap._ The supplied card remote control can be stored in the cabinet. To store the card remote control 1. Insert the card remote control STRAIGHT into the slot. 2. Push the card remote control until it is into place. The supplied card remote control can be stored in the cabinet. To store the card remote control 1. Insert the card...

Connecting an External Monitor

You can connect a separate, external monitor to your VT440 VT540 to simultaneously view on a monitor the image you're projecting. To do so 1. Turn off the power to your projector, monitor and computer. 2. Use a 15-pin cable to connect your monitor to the RGB Monitor Output (Mini D-Sub 15 pin) connector on your projector. 3. Turn on the projector, monitor and the computer. You can connect your projector to a DVD player with component outputs or Video output. To do so, simply 1. Turn off the...

Connecting Your Macintosh Computer

When using a Macintosh computer with the projector, set the DIP switches of the supplied pin adapter according to your resolution. After setting, restart your Macintosh computer. See the following pages for setting of the DIP switches. When using with a Macintosh, SVGA(800x600 VT440) XGA(1024x768 VT540) is recommended if your Macintosh supports this mode. When using with a Macintosh PowerBook, output may not be set to 800 X 600 unless mirroring is off on your PowerBook. Refer to owner's manual...

Distance Chart

A Distance between the lens and the screen center C Horizontal throw distance between screen surface and the lens D Vertical distance between projector base and base of image E Vertical distance between projector base and screen center H Horizontal Screen Width A C cosa C (wide) 36.8712 x (diagonal screen size 0.92205) - 43.5689 C (tele) C(wide) x 1.2 D 1.45 x M - 62.9 E 62.9 + 5.5M M 1.25H 22.86 H Horizontal Screen Width A C cosa C (wide) (36.8712 x (diagonal screen size 0.92205) - 43.5689)...

E

This section describes the simple maintenance procedures you should follow to replace the lamp, clean the filter, and replace the batteries in the remote control. After your lamp has been operating for 2000 hours (up to 3000 hours in Eco mode) or longer, the Status light in the cabinet will go on and the message will appear. Even though the lamp may still be working, replace it at 2000 (up to 3000 hours in Eco mode) hours to maintain optimal projector performance. 3. Insert a new lamp housing...

General Controls

Before you turn on your projector, ensure that the computer or video source is turned on and that your lens cap is removed. Plug the supplied power cable in the wall outlet. The projector will go into its standby mode and the power indicator will glow orange. Only after you press the POWER button on the projector cabinet or the remote control will the power indicator turn to green and the projector become ready to use. NOTE To turn the projector on by plugging in the power cable, use the menu...

Menu Elements

OK Button Cancel Button Solid triangle Menu windows or dialog boxes typically have the following elements Title bar Indicates the menu title. Highlight Indicates the selected menu or item. Solid triangle Indicates further choices are available. A highlighted triangle indicates the item is active. Tab Indicates a group of features in a dialog box. Selecting on any tab brings its page to the front. Radio button Use this round button to select an option in a dialog box. Check box Place a checkmark...

MENU Tree

English German French Italian Spanish Swedish Japanese English German French Italian Spanish Swedish Japanese Manual Auto 3sec Auto 1Osec Auto 3Osec Auto NTSC3.58 NTSC4.43 PAL PAL60 SECAM Front Floor, Rear Ceiling, Rear Floor. Front Ceiling C Component H HDTV All All sources

Remote Control Battery Installation

Press firmly and slide the battery cover off. 1. Press firmly and slide the battery cover off. 2. Remove the old Lithium coin cell and install new one (CR2025). Ensure that the side with a + is facing up. The air-filter sponge keeps the inside of the MultiSync VT440 VT540 Projector free from dust or dirt and should be cleaned after every 100 hours of operation (more often in dusty conditions). If the filter is dirty or clogged, your projector may overheat. Turn off the power and unplug the...

Remote Control Features

Use this button to adjust Position-H V and Pixel Clock Phase for an optimal picture. Some signals may not be displayed correctly, or in some cases it may take some time for a source to switch between sources. 4 Select (AY Volume (+) (-) Buttons AY Use these buttons to select the menu of the item you wish to adjust. Use these buttons to change the level of a selected menu item. A press of the button executes the selection. When no menus appear, these AY buttons work as a volume control. When the...

RF Interference Warning

The Federal Communications Commission does not allow any modifications or changes to the unit EXCEPT those specified by NEC Technologies in this manual. Failure to comply with this government regulation could void your right to operate this equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential...

Setting up Your Projector

Your MultiSync VT440 VT540 Projector is simple to set up and use. But before you get started, you must first 2. Set up a screen or select a non-glossy white wall onto which you can project your image. Carrying the Projector Always carry your projector by the handle. Ensure that the power cable and any other cables connecting to video sources are disconnected before moving the projector. When moving the projector or when it is not in use, cover the lens with the lens cap.

Terminal Panel Features

RGB Input Connector(Mini D-Sub 15 pin) Connect your PC or other RGB equipment. Use the supplied signal cable to connect to a PC. Connect a VCR, DVD player, laser disc player, or document camera here to project video. 2. RGB Monitor Output Connector (Mini D-Sub 15 pin) You can use this connector to loop your computer image to an external monitor from the RGB input source. 3. Audio Input Output Mini Jack This is where you connect audio output from your computer. Or connect additional external...

Using a Tabletop or Cart

Place your projector on a flat level surface at the optimal distance from the screen or wall so you realize the size image you want. (Avoid having bright room lighting or sun light directly on the screen or wall where you'll be projecting the image.) 2. Connect the power cable, remove the lens cap and turn the projector on. (If no input signal is available, the projector will display a background image.) 3. Ensure that the projector is square to the screen. 4. Move the projector left or right...

Introduction to the Multi Sync VT440VT540 Projector

This section introduces you to your new MultiSync VT440 (SVGA) VT540 (XGA) Projector and describes the features and controls. Congratulations on Your Purchase of The MultiSync VT440 VT540 Projector The MultiSync VT440 VT540 is one of the very best projectors available today. The MultiSync VT440 VT540 enables you to project precise images up to 300 inches across (measured diagonally) from your PC or Macintosh computer (desktop or notebook), VCR, DVD player, document camera, or even a laser disc...

Ceiling Installation

A Distance between the lens and the screen center B Vertical distance between the top of the supplied ceiling mount and the screen center C Horizontal throw distance between screen surface and the lens F Vertical distance between projector base and top of image H Horizontal Screen Width (inch) A C cosa B 94 + 5.5 x M C (wide) 36.8712 x (diagonal screen size 0.92205) - 43.5689 C (tele) C(wide) x 1.2 F 1.4516 x M - 94 M 1.25H 22.86 H Horizontal Screen Width A C cosa C (wide) (36.8712 x (diagonal...

3 Troubleshooting and adjustment procedures 31 Replacement of the Main Pwb

< Copying of the V-T data, ADJ data, Logo data, and Uniformity data> Let the PJ power supply stay in the STAND BY state and select the Data tab for servicing software. Make data read write according to the descriptions (1) and (2) below. Prior to the replacement, and as required, read the presently used data of the MAIN PWB and save them in the relevant file. (According to the type of fault, it may be impossible to save these data.) Designate the file name and save the data by clicking the...

43 RGBComponent signal processor and AD converter block

The video signal input entered in Pin 15 of the Mini D-SUB is fed to the A D converter IC IC3401 CXA3506R through the buffer circuit. In the case of a component signal, only the chroma signals Pb, Pr, Cb, Cr are entered after their levels have been lowered at the attenuator of -6B. In the A D converter IC, the video signal from the video decode IC or the video signal at Pin 15 of the Mini D-SUB is selected. After the contrast has been adjusted at the built-in analog amplifier, this signal is...

Lcex

Are the following signal inputs available at POSV connected with POSV of the MAIN PWB See the waveform diagram. Rch video signal 10Vp-p Gch video signal 10Vp-p Bch video signal 10Vp-p Are the following signal outputs available at the respective output pins and test pins of IC6201 or IC6202, IC6203 See the waveform diagram. Y shift register start pulse DY Y shift register transfer clock CLY, CLYB X shift register transfer clock CLX, CLXB X shift register start pulse DX X driver driving direction...

3 Top Cover Assystay Rfilter F

Vt540 Repair

1 Remove the five screws T , and take out the TOP COVER ASSY. 2 Remove the two screws 2 , and take out the STAY R. 3 Remove the FILTER F. Note Refer to P7-4 and P7-5. 1 Hold both sides of the set with both hands at Part A. Apply a force to Part B in the direction of the arrow diagonally toward the top of the set . In this case, the force being applied should be as low as possible in order not to damage the switch. 2 Confirm that the claw of C each side surface has been disengaged. 3 Remove the...

2 Equipment to be used and operating environments

Software for servicing adjustments Ser_99vt.exe Ver1.0 Attached files V-T Data, etc. Personal computer Enabled to actuate Windows95 or Windows3.1, and the serial port COM1 or COM2 or COM3 is of the D-SUB9pin. Video signal generator Auto-adjustment type Enabled to generate an output of NTSC split color bars 7 colors Component signal generator Auto-adjustment type Enabled to generate an output of 15kHz Component Video 60Hz split color bars 7 colors Serial cable Accessory for the PJ main unit...

5 Troubleshooting

This section helps you resolve problems you may encounter while setting up or using the projector. No light in High-Bright mode Blinking green in Eco mode The message Please wait a little appears The projector retries 3 times at an interval of 15 sec for max. 45 sec 3 minutes after lamp is turned on in Eco mode Fixed at High-Bright mode. Lamp mode can be changed on the menu Lamp has reached its end of life 2000 hours or over Steady red High-Bright mode Steady orange Eco mode Message appears on...

Better Reputation Better Profit

Before servicing this chassis, it is important that the service technician read and follow the Safety Precautions and Product Safety Notice in this Service Manual. SHOCK HAZARD - Use an isolation transformer when servicing. SAFETY USERS TROUBLE CIRCUIT CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. This symbol warns the user that uninsulated voltage within the unit may have sufficient magnitude...