MITSUBISHI WD-52525 - WD-52725 - WD-52825 -
WD-62525 - WD-62725 - WD-62825
HOW TO REPLACE OPTICAL ENGINE - WD62725 - MITSUBISHI PROJECTION TVs
Optical Engine Mounting
[The Optical Engine is mounted on the Adjuster
assembly as shown below.]
1. Four
screws (a) secure the bottom plate and Optical Engine to the Adjuster assembly.
2. The bottom plate tab (1) slides into slot (1) on the Adjuster.
3. The Optical Engine is secured to the bottom plate by 4 screws (b).
4. The Black Bracket is secured to the bottom plate and the Lamp Box with 4 screws (c).
5. To replace the Optical Engine, the Optical Engine, bottom plate and black bracket need to be removed together as an assembly.
2. The bottom plate tab (1) slides into slot (1) on the Adjuster.
3. The Optical Engine is secured to the bottom plate by 4 screws (b).
4. The Black Bracket is secured to the bottom plate and the Lamp Box with 4 screws (c).
5. To replace the Optical Engine, the Optical Engine, bottom plate and black bracket need to be removed together as an assembly.
Removing the Optical Engine
1. Remove the Cabinet Back (refer to disassembly instructions).
2. Disconnect all connectors from the Optical Engine, Lamp Cartridge Housing and the PCB-DMD.
3. From the rear of the TV, remove the 4 screws (c), to remove the COVER-DUCT and DMD Fan cover.
4. From the rear of the TV, remove the 4 brass coloured screws (a), shown below, securing the bottom plate to the Adjuster assembly.
5. Slide the Optical Engine/Lamp Cartridge Housing towards the rear to remove from the TV.
1. Remove the Cabinet Back (refer to disassembly instructions).
2. Disconnect all connectors from the Optical Engine, Lamp Cartridge Housing and the PCB-DMD.
3. From the rear of the TV, remove the 4 screws (c), to remove the COVER-DUCT and DMD Fan cover.
4. From the rear of the TV, remove the 4 brass coloured screws (a), shown below, securing the bottom plate to the Adjuster assembly.
5. Slide the Optical Engine/Lamp Cartridge Housing towards the rear to remove from the TV.
Remove the following parts from the
Optical Engine
* DMD Heat Sensor
* The Optical Engine bottom plate and black bracket
DMD Heat Sensor & Bottom Plate & Black Bracket Removal
1. Remove screw (a) on the top of the DMD Fan.
2. Set the Heat Sensor aside to install on the replacement Optical Engine.
* DMD Heat Sensor
* The Optical Engine bottom plate and black bracket
DMD Heat Sensor & Bottom Plate & Black Bracket Removal
1. Remove screw (a) on the top of the DMD Fan.
2. Set the Heat Sensor aside to install on the replacement Optical Engine.
Remove the 4 screws (B) from the Bottom Plate.
Remove the two screws (C), holding the Black Bracket to the Lamp
Box.
Installing the Optical Engine
1. Install the Bottom Plate, Black Support Bracket and the Heat Sensor, removed from the original Optical
Engine, on the replacement Engine
2. Reverse the removal procedure to install the replacement Optical Engine in the cabinet.
3. The following adjustments may have to be performed after the installation.
* Horizontal and Vertical Electrical Centering Adjustment.
* Optical Unit Rotation Adjustment
* Optical Unit Keystone Distortion Adjustments.
4. IMPORTANT: After Optical Engine replacement, perform the Data Copy Procedure.
1. Install the Bottom Plate, Black Support Bracket and the Heat Sensor, removed from the original Optical
Engine, on the replacement Engine
2. Reverse the removal procedure to install the replacement Optical Engine in the cabinet.
3. The following adjustments may have to be performed after the installation.
* Horizontal and Vertical Electrical Centering Adjustment.
* Optical Unit Rotation Adjustment
* Optical Unit Keystone Distortion Adjustments.
4. IMPORTANT: After Optical Engine replacement, perform the Data Copy Procedure.
Data Copy Procedure
This procedure must be performed after replacing either the Electrical Chassis or Optical Engine.
1. To display the data copy menu press [TV MENU] [2-4-5-7] [0]
2. Use the cursor keys to yellow highlight “Copy Light Engine EEPROM to DM”
3. Press [ENTER]
4. After the copy procedure has been completed, exit the menu by pressing [HOME]
This procedure must be performed after replacing either the Electrical Chassis or Optical Engine.
1. To display the data copy menu press [TV MENU] [2-4-5-7] [0]
2. Use the cursor keys to yellow highlight “Copy Light Engine EEPROM to DM”
3. Press [ENTER]
4. After the copy procedure has been completed, exit the menu by pressing [HOME]