Check Ballast Power Supply Voltages and Signals

To check voltages and signals on the controller ECA, first prepare for projector power up with the top case removed. Then follow these steps 1. Position the top case right side up at the rear of the projector. 2. Extend the keypad cable from the rear of the projector and plug it into the keypad connector on the top case. 3. Connect the projector to AC power. CAUTION When you start the projector, there is voltage present on the controller ECA and power supply. Be very careful where you probe and...

Remove and Replace the Color Wheel Shield

Infocus Color Wheel Repair

The color wheel shield 330-0968-xx fastens to the lamphouse and the optical engine. The shield provides protection to the fragile color wheel and bracing for the lamphouse which is otherwise open to the optical engine. 1. Remove the following items Lamp module page 42 Focus ring page 30 Zoom ring page 30 Front bezel page 32 Rear bezel page 49 Top case page 52 2. Remove the two M3x10 Plastite Phillips screws that fasten the color wheel shield to the top of the lamphouse and the optical engine....

Prepare for Power Up with Top Case Removed

Infocus Projectors Diagram

You can remove the top case and power up the projector to check fan or thermal switch operation. You also do this to check internal voltages and signals, which may require additional projector disassembly. Here's how to prepare the projector for power up with the top case removed. 1. Remove the top case page 52 NOTE The lamp must be in place and connected to start the projector with the top case removed. 2. Use vinyl electrical tape or other non-conductive means to hold the safety switch...

Remove and Replace Lamp Module

Infocus Projectors Diagram

The lamp door 505-1513-xx fits over the lamp cavity in the projector. A pin on the lamp door closes the safety switch on top of the lamphouse when the door is shut. The lamp module SP-LAMP-009 consists of a metal housing and enclosed reflector assembly and arc tube. Air flow from the 80 mm fan passes through openings on two sides of the lamp module. Screens over these openings provide air filtration and contain quartz fragments in the event of lamp rupture. CAUTION The lamp module gets very hot...

Check Controller Voltages

Eca Infocus

To check voltages, you need to power up the projector with the top case removed. See page 80 for instructions on how to do this. Check Controller ECA Voltages and Signals 1. Prepare to power up the projector with the top case removed. page 80 2. Remove the chassis. page 12 3. Position the ballast power supply ECA near enough to the projector to connect the controller power supply cable from the controller ECA. You can do this if you turn the ballast power supply ECA over and connect it to the...

Remove and Replace the Keypad

The keypad fastens to the inside of the top case. The keypad consists of the keypad ECA 510-1774-xx , the key set 505-1515-xx , and the LED cover 340-1123-xx. The keypad ECA permanently connects to the front IR receiver ECA. A ribbon cable extends between them. The LED cover nests in the recess between the keypad ECA and the top case. It focuses light from the power LED on the keypad ECA through a hole in the top case. 1. Remove the following items Lamp module page 42 Focus ring page 30 Zoom...

Check Io Eca Voltages and Signals

Diagram Infocus

Prepare for projector power up with the top case removed. page 80 2. Remove the chassis. page 12 3. Position the ballast power supply ECA in or near enough to the projector to connect the controller power supply cable from the controller ECA. Be sure that there is enough space above the I O ECA to allow use of measurement probes. 4. Connect the lamp to the lamp cable connector at the side of the lamphouse. Make sure the connector fully engages the connector on the lamp module. 5. Position...

Perform the following tests

Akai Dvd Player Akd

Connect AC power, and turn the unit on. Verify that the proper splash logo screen appears. Verify image quality. Adjust the projector so that the image is square. Make sure the lens is at a 90 angle to the wall. Verify that the elevator and leveling foot are functional. Verify that the focus and zoom rings operate properly. Verify cosmetics. 1. Press the Source button on the keypad to select a video source. 2. Connect the component video adapter cable and to the projector. 3. Disconnect any...

Block Diagram

Pixelwork Scaler Block Diagram

The diagram below illustrates the projector's electrical architecture. This section also contains information about Controller ECA functions page 75 Remote control features and functions page 79 A Pixelworks PW164B processor is responsible for control of the entire system as well as processing of the graphics and video data, including GUI insertion and rescaling to the DMD's native SVGA resolution. The processor consists of an Intel 80C186 core CPU with on-chip peripherals including GPIO,...

Remove and Replace the Cooling Fans

Two fans provide all the cooling air necessary for the projector. The 80mm fan 526-0152-xx provides primary cooling for the lamp module and lamphouse. The 60mm fan 526-0153-xx cools the color wheel and optical engine. Both fans draw cool air across the electronic components in the projector and exhaust heated air through the front bezel. The fans fasten to the rear side of the lamphouse. 1. Remove the following items Lamp module page 42 Focus ring page 30 Zoom ring page 30 Front bezel page 32...

Check the Thermal Switch

The thermal switch is designed to open when the temperature inside the projector gets too high. When the switch opens, the power supply shuts down, turning the projector off. When the projector shuts down after operating for a few minutes or when the lamp fails to strike after repeated attempts at startup, check the thermal switch. First, power up the projector with the top off page 80 . Let the projector run until it shuts down. Measure resistance across the terminals at the thermal switch. If...

Remove and Replace the Controller ECA

Sanyo Projectors Thermo Switch

The controller ECA 510-1773-xx mounts beneath the metal chassis and ballast power supply ECA and behind the optical engine. It fastens to the bottom case with seven screws and connects to the DMD ECA through two connectors at the front side of the controller. A new controller ECA includes the keypad and ballast power supply cables. These cables permanently connect to the controller ECA. Do not attempt to remove them. WARNING Be sure to take proper ESD precautions while working near the...

Remove and Replace the Optical Engine

Infocus Optical Engine

The optical engine 505-1506-xx fastens to the bottom case. It produces the projected image by directing focused light from the lamp module through the color wheel and onto the Digital Micromirror Device DMD . The optical engine contains a formatter ECA that processes the image signal from the controller ECA before the the signal is delivered to the DMD. It also comprises other elements in the light path, including the CAUTION The color wheel is unprotected on the side of the optical engine....

Check the Color Wheel and Reseat the Cable

Eca Infocus

If the color wheel cable is not properly seated in its connector, the color wheel will not start when the projector powers up. When the color wheel does not spin, there is no lamp enable signal, and the lamp will not strike. Normally, you hear the brief high-pitched sound when the color wheel spins up to speed. If you don't hear the sound, or if you are not sure, you can do a visual check to confirm the color wheel operation. If the color wheel does not spin, the first item to check is the...

Remove and Replace the Ballast Power Supply ECA

Ballast Power Supply Instructions

The ballast power supply ECA 520-0114-xx fastens to the chassis. It converts 100-240 VAC supply voltage to various low voltage DC levels required internally by the projector. The power supply directly interfaces with the ballast to control lamp strike and operation. The ballast steps up voltage from the power supply to ignite the lamp module. The ballast power supply ECA also interfaces with the controller ECA to provide DC power and exchange control signals. Audio amplification and takes place...

Table of Contents

Table of Safety Important Important Safety Parts Removable Parts Remove and Replace the Ballast Power Supply Remove and Replace the Bottom EMI Remove and Replace the Remove and Replace the Color Wheel Remove and Replace the Controller Remove and Replace the Remove and Replace the Optical Remove and Replace the Cooling Remove and Replace the Focus and Zoom Remove and Replace the Front Remove and Replace the I O Remove and Replace the Remove and Replace Lamp Remove and Replace the Remove and...