MITSUBISHI MUZ SF25VE, MUZ SF42EV AIR-CONDITIONER HOW TO DISASSEMBLE PROCEDURE

 Applicable to: Mitsubishi Airconditioners  MUZ-SF25VE MUZ-SF25VEH MUZ-SF35VE MUZ-SF35VEH MUZ-SF42VE MUZ-SF42VEH

DISASSEMBLY INSTRUCTIONS

<"Terminal with locking mechanism" Detaching points>
The terminal which has the locking mechanism can be detached as shown below.
There are two types (refer to (1) and (2)) of the terminal with locking mechanism.
The terminal without locking mechanism can be detached by pulling it out.
Check the shape of the terminal before detaching.

Removing the cabinet
(1) Remove the screw fixing the service panel.
(2) Pull down the service panel and remove it.
(3) Disconnect the power supply and indoor/outdoor connecting wire.
(4) Remove the screws fixing the top panel.
(5) Remove the top panel.
(6) Remove the screws fixing the cabinet.
(7) Remove the cabinet.
(8) Remove the screws fixing the back panel.
(9) Remove the back panel.

Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
CN722 (Defrost heater) MUZ-SF25/35/42VEH
CN931, CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN724 (LEV)
(3) Remove the compressor connector (CN61).
(4) Remove the screws fixing the heat sink support and the separator.
(5) Remove the fixing screws of the terminal block support and the back panel.
(6) Remove the inverter assembly.
(7) Remove the screw of the earth wire and screw of the terminal block support.
(8) Remove the heat sink support from the P.C. board support.
(9) Remove the screw of the inverter P.C. board and remove the inverter P.C. board from the P.C. board support.

Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil.

Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger temperature thermistor and ambient temperature thermistor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
(3) Pull out the discharge temperature thermistor from its holder.
(4) Pull out the defrost thermistor from its holder. (Photo 6)
(5) Pull out the outdoor heat exchanger temperature thermistor from its holder.
(6) Pull out the ambient temperature thermistor from its holder.

Removing outdoor fan motor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN931, CN932 (Fan motor)
(3) Remove the propeller nut.
(4) Remove the propeller.
(5) Remove the screws fixing the fan motor.
(6) Remove the fan motor.

Removing the compressor and 4-way valve
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Remove the inverter assembly. (Refer to 2.)
(3) Recover gas from the refrigerant circuit.
NOTE: Recover gas from the pipes until the pressure gauge shows 0 kg/cm2 (0 MPa).
(4) Detach the brazed part of the suction and the discharge pipe connected with compressor.
(5) Remove the nuts of compressor legs.
(6) Remove the compressor.
(7) Detach the brazed part of pipes connected with 4-way valve.

Removing the cabinet
(1) Remove the screws of the service panel.
(2) Remove the screws of the top panel.
(3) Remove the screw of the valve cover.
(4) Remove the service panel.
(5) Remove the top panel.
(6) Remove the valve cover.
(7) Disconnect the power supply and indoor/outdoor connecting wire.
(8) Remove the screws of the cabinet.
(9) Remove the cabinet.
(10) Remove the screws of the back panel.
(11) Remove the back panel.

Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
CN722 (Defrost heater) MUZ-SF50VEH
CN931, CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN724 (LEV)
(3) Remove the compressor connector.
(4) Remove the screws fixing the heat sink support and the separator.
(5) Remove the fixing screws of the terminal block support and the back panel.
(6) Remove the inverter assembly.
(7) Remove the screw of the earth wire, screw of the P.C. board cover and screws of the terminal block support.
(8) Remove the heat sink support from the P.C. board support.
(9) Remove the screw of the inverter P.C. board and the inverter P.C. board from the P.C. board support.

Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connector:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil.

Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger temperature thermistor and ambient temperature thermistor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
(3) Pull out the discharge temperature thermistor from its holder.
(4) Pull out the defrost thermistor from its holder.
(5) Pull out the outdoor heat exchanger temperature thermistor from its holder.
(6) Pull out the ambient temperature thermistor from its holder.

Removing outdoor fan motor
(1) Remove the top panel, cabinet and service panel. (Refer to 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN931 and CN932 (Fan motor)
(3) Remove the propeller nut.
(4) Remove the propeller.
(5) Remove the screws fixing the fan motor.
(6) Remove the fan motor.

Removing the compressor and 4-way valve
(1) Remove the top panel, cabinet and service panel. (Refer to 1.)
(2) Remove the back panel. (Refer to 1.)
(3) Remove the inverter assembly. (Refer to 2.)
(4) Recover gas from the refrigerant circuit.
NOTE: Recover gas from the pipes until the pressure gauge shows 0 kg/cm2 (0 MPa).
(5) Detach the brazed part of the suction and the discharge pipe connected with compressor.
(6) Remove the compressor nuts.
(7) Remove the compressor.
(8) Detach the brazed part of 4-way valve and pipe.

LASERVUE PROJECTION HDTV V46 CHASSIS HOW TO ENTER SERVICE MODE - MITSUBISHI LASERVUE DLP PROJECTION TV - SERVICE ADJUSTMENTS - SERVICE MODE - SMPS SCHEMATIC

LASERVUE PROJECTION HDTV V46 CHASSIS 

Light Engine : DLP® (1080p) 

Power Input : AC 120V, 60Hz - 

Tuning : 1 NTSC/ATSC/QAM

Service procedures

Many service functions and adjustments are accessed using the Remote Control.

Option menu
1. Press the <MENU> button on the remote control.
2. Press the buttons <2-4-7-0>. The screen will display the Option Menu. [Service Mode]

Service level initialization.
Service Level Initialization is used to restore all customer menu, video and audio settings to the original factory default condition.
1. Enter the Option Menu <MENU><2-4-7-0>
2. Select “Initialize” and <ENTER>

Deactivate VUDU.
This feature will deactivate the customer’s VUDU on-line subscription. It should be used before TV ownership is changed. NOTE: This feature is independent of the Initialize function.
1. Enter the Option Menu <MENU><2-4-7-0>.
2. Select “Deactivate VUDU” and <ENTER>.
3. The “VUDU Reset” text will momentarily turn red.
4. Press <EXIT> to quit.
5. The TV will register as deactivated the next time it is connected to the internet.

Digital signal strength.
1. Tune to a Digital Channel.
2. From the Option Menu, scroll down and highlight “Digital Signal Strength.”
3. Press <ENTER>. The screen will display the Digital Signal Strength Menu.

SNR Recommended Levels:
8VSB = 16 to 33
64 QAM = 22 to 35
256 QAM = 27 to 38

Reset / Initialization.

Many symptoms that are customer generated, intermittent or cannot be verified can be resolved by using the various Reset and Initialization options. Before visiting the customer’s home ask the customer to 1st perform a System Reset by pressing the <POWER> button on the side panel and holding it for 8 seconds.

 If this does not resolve the issue, they can perform an A/V Reset by pressing the side panel <INPUT> + <VOL UP > buttons at the same time and holding for 10 seconds. Then, if necessary, perform a user level Initialization by pressing <MENU><1-2-3> <ENTER> with the remote.

The customer should be made aware when settings and/or options will be reset.

LED indications and self diagnostics
The front panel Power LED provides an indication of the set’s operation and the possible cause of a malfunction.

Self diagnostics
A blinking red and yellow Status LED will indicate an Error Code that can help determine the cause of a circuit failure.
 The number of Red blinks indicates the value of the MSD (tens digit) of the Error Code.
 The number of Yellow blinks indicates the value of the LSD (ones digit) of the Error Code.
Example: If the Error Code is “37”, the LED will continuously blink Red three times, followed by blinking Yellow seven times.

To perform a System Reset, press and hold the Power button for 10 seconds. Or, unplug the set for 10 seconds then restore power.

After 3 occurrences, the TV will be locked out and will not respond to Power On commands. After repair, use the following procedure to unlock the TV.
1. Perform a System Reset by removing and re-applying AC.
2. Press and hold the side panel <INPUT> + <VOL Dn> buttons at the same time until the Status LED returns to normal (about 5 seconds).

Error code log.
The Error Code Log may be helpful to retrieve the code for an error that occurred in the past.
To access the Error Code Log: Press <MENU> <3-5-6-4>

Code Log Definitions
 PAGE - Current page number
 CURRENT TIME - total hours of operational use.
 USAGE TIME - usage hours when the error occurred.
 CODE - the specific Error Code that occurred.
 STATUS: HAPPENED - Indicates an error was recorded.

Press <CANCEL> to erase the Log.

[The Error Code Log is intended as a reference tool and is not meant to be used as a final determination of a defective part].

Service adjustments.

There are 2 Types of Service Adjustments, electrical and mechanical:
Electrical Adjustments.
  Horizontal and Vertical Centering Adjustment.
  Index Delay Adjustment.
  Geometry Alignment.
  Data Transfer Functions.

Mechanical Adjustment.
  Top Mirror Adjustment.

Electrical adjustments

Specific Adjust Procedures follow
 Service adjustments are performed using the remote control.
 The Service Menu is used for all service adjustments.
 Test Patterns are generated internally.

Activating the Service Menu
1. Press the <MENU> button on a remote control. (The “MENU” display will appear.)
2. Press the buttons <2-4-5-7>. (The Service Menu On Screen Display will appear.)
If no display appears, press <EXIT> and repeat steps 1 and 2.

Test Pattern Activation
1. When in the Service Menu, press Play  to activate the internal test patterns (no indication will be displayed initially). Use FWD and RWD to toggle between patterns.
2. Press Play a second time and use FWD and RWD to access additional patterns.
3. Press Play  again to toggle back to the previous patterns.

Adjustment Selection
When in the Service Menu use the <VIDEO> button to toggle to the adjustment desired as indicated by the number and abbreviation displayed on screen, i.e. “1.HVPOS.”

Adjusting Data
After selecting an adjustment item, use the Navigation UP/DN, LEFT/RIGHT buttons to perform the adjustment.

Saving Data
Press <ENTER> to save the adjustment data. The menu display will turn red for approximately one second. Note: If the circuit adjustment mode is terminated without pressing <ENTER>, changes in adjustment data are not saved.

Data Transfer & Geometry Menu
While in the Service Menu, press the <0> button to activate the Data Transfer & Geometry Menu.

Exiting the Service Menu
Press <EXIT> to quit.

Horizontal and Vertical Position Adjustment
1. Enter the Service Menu <MENU><2-4-5-7> .
2. Select the Geometry Test Pattern shown Play Rewind x2.
3. If necessary, select the adjustment, “1.HVPOS” <VIDEO>.
4. After selecting the HVPOS adjustment item, use the Navigation UP/DN, LEFT/RIGHT buttons to center the display.
  If a Up/Down button is pressed, the vertical position and VPOS adjustment data changes.
  If a Left/Right button is pressed, the horizontal position and HPOS adjustment data changes.
5. Press <ENTER> to save the adjustment data.

TSP Alignment (after Optical Engine replacement)
1. Enter the Service Menu <MENU-<2-4-5-7>.
2. Select the TSP Test Pattern by pressing PLAY once, then FAST FORWARD  or REWIND  until the pattern shown appears.
3. Use the <VIDEO> button to select “2.TSP”.
4. Use the DIRECTION buttons to straighten the horizontal lines, see example.
5. Press <ENTER> to save the adjustment.

Select Calibration Table (after Light Source Unit replacement)
1. In the Customer’s Video Settings Menu select COLOR TEMP: HIGH
2. Enter the Service Menu <MENU-<2-4-5-7>.
3. Use the <VIDEO> button to select the adjustment, “61.BCMH” and note the data value (0, 1, 2, 3 or 4).
4. Select the Green Double Ramp Pattern by pressing PLAY <w> twice, then FAST FORWARD or REWIND  until the pattern below appears.
5. Check the pattern for smoothness of graduation from dark to light and for the presence any vertical contour lines.
6. Use the DIRECTION  buttons to alternately change the Data Value of “61.BCMH” to 0, 1, 2, 3 or 4.
As necessary, press PLAY once to observe the Service Menu on screen display and press PLAY twice to return to the pattern.
7. Select the data value 0, 1, 2, 3 or 4 that gives the best results. No higher data value should be used.
8. Press <ENTER> to save the adjustment.

Manual Geometry Alignment
1. Activate the Service Mode <MENU><2-4-5-7>. From the Service Menu, press the <0> button. The Data Transfer & Geometry Menu will appear.
2. Use the Up/Dn buttons to select “MANUAL GEOMETRY ALIGNMENT” and press <ENTER>.
3. The Manual Geometry Alignment Pattern will appear. See below.
4. Prepare for the alignment by resetting the geometry data. Press <1> then <ENTER>. The previous menu will be displayed. Select “MANUAL GEOMETRY ALIGNMENT” and press <ENTER> again to proceed.
Note 1: Upon entering the Manual Geometry Alignment Mode the first time, the geometry may appear distorted because all factory geometry correction is automatically disabled. Press <EXIT> to quit and re-enable the factory geometry correction. Pressing <1> <ENTER> and <EXIT> will cause the TV to operate with out factory geometry correction (distortion will be present).

[At any time the original factory geometry data can be restored from backup:  

 From the Data Transfer & Geometry Menu <MENU><2-4-5-7><0>, select “RESTORE GEOMETRY DATA FROM BACKUP” <ENTER>.

Phase 1 - 20 Point Geometry Alignment
1. 20 Adjustment Points are indicated by white dots around the edge of the raster. The adjustment position is indicated by a + cursor.
2. Starting from the upper left corner, use the buttons to align the + at each point in a straight line, flush with the bezel as a reference.
Note: Only the cursor will move. The Geometry Pattern will not change.
3. After adjusting each point, use the <uu> button to shift the cursor to the next point clockwise and repeat until all 20 points have been adjusted.
4. After all 20 points are adjusted and the cursor is returned to the original starting point, press <ENTER>.
Correction will be automatically calculated and saved and the Manual Geometry Alignment will be terminated.
5. Press <ENTER> to re-activate the Manual Geometry Alignment. The geometry pattern will appear with the corrections applied.

Phase 3 - 4:3 and 16:9 Alignment
1. With the Manual Geometry Alignment activated, press <VIDEO> to enter the Left 4:3 Alignment Mode. The pattern below will be displayed.
Note: Pressing <VIDEO> will toggle between the Left 4:3, Right 4:3, Top 16:9, Bottom 16:9 and the 20 Point Geometry Alignment modes.
2. In the Left 4:3 Alignment Mode, pressing << or >> will cause the geometry pattern to be displayed with 12 preset amounts of correction. Toggle through them until you find the one with the straightest Blue 4:3 Line.
It may help to count the patterns as you cycle through them. When you find the pattern with the straightest Blue 4:3 Line, press <VIDEO>. The pattern will be displayed with a Right Blue 4:3 Line.

3. In the Right 4:3 Alignment Mode, pressing <<or >> will cause the geometry pattern to be displayed with 12 preset amounts of correction. Toggle through them until you find the one with the straightest Blue 4:3 Line. Again, count the patterns as you cycle through them. When you find the pattern with the straightest line, press <VIDEO>. The Top Red Line will be displayed in the pattern.

4. In the Top 16:9 Alignment Mode, pressing << or >> will cause the geometry pattern to be displayed
with 30 different preset amounts of correction to the Top Red Line. Toggle through them until you find the one with the straightest Red Line. Again, count the patterns as you cycle through them. When you find the pattern with the straightest line, press <VIDEO>. The Center Red Line will be displayed in the pattern.

5. In the Center 16:9 Alignment Mode, pressing <<or >> will cause the geometry pattern to be displayed with 30 different preset amounts of correction to the Center Red Line. Toggle through them until you find the one with the straightest Red Line. Again, count the patterns as you cycle through them. When you find the pattern with the straightest line, press <VIDEO>. The Bottom Red Line will be displayed in the pattern.

6. In the Bottom 16:9 Alignment Mode, pressing <tt> or <uu> will cause the geometry pattern to be displayed with 30 different preset amounts of correction to the Bottom Red Line. Toggle through them until you find the one with the straightest Red Line. When you find the pattern with the straightest line, press <VIDEO>. Press <ENTER> then <EXIT> to exit and save the 4:3 and 16:9 data.
7. Select the Geometry Test Pattern (See HVPOS). If Geometry is acceptable, press <EXIT> to quit.

Data Transfer
Service Data is duplicated and stored in separate EEPROMs in two locations.
  PWB-MAIN - Working data for TV operation
  OPTICAL ENGINE - Backup data

Enter the Service Mode <MENU><2-4-5-7> Select the Data Transfer & Geometry Menu <0>

[[Warning - Only use "SAVE ENGINE AND GEOMETRY SETTING TO BACKUP" after Optical Engine replacement]]

Note: Besides MANUAL GEOMETRY ALIGNMENT, six data transfer choices are listed on screen.
  RESTORE ENGINE DATA FROM BACKUP - copies backup factory adjustments HVPOS, White Balance and Index Delay from the Optical Engine to the PWB-MAIN.
  RESTORE GEOMETRY DATA FROM BACKUP - copies backup factory Geometry Alignment data from the Optical Engine to the PWB-MAIN.
  SAVE ENGINE AND GEOMETRY SETTING TO BACKUP - copies all working data from the PWB-MAIN into backup memory on the Optical Engine.
  BACKUP AND RESTORE ISF SETTINGS - allows the ISF (ADV) video settings to be backed up and restored using an external USB memory device.
  RED ONLY AND GREEN ONLY - displays the video in red or green only.

2. Use the UP/DN buttons to select the item and press <ENTER>.
3. Follow on-screen instructions if given.
4. Press <EXIT> to quit.
After Optical Engine Replacement:
1. Save Engine and Geometry Setting to Backup
After Electrical Chassis (PWB-MAIN) Replacement:
1. Restore Engine Data From Backup
2. Restore Geometry Data From Backup.
3. Restore ISF Settings From Backup (Only if backup USB memory device is available).

V46 SMPS [Power supply] Schematic

MITSUBISHI ELECTRIC WL7200U – LCD PROJECTOR – HOW TO REPLACE THE LAMP – HOW TO RESET THE LAMP HOUR TIMER

Mitsubishi Electric WL7200U – LCD PROJECTOR – How to replace the lamp – How to reset the lamp hour Timer

Mitsubishi Electric WL7200U – LCD PROJECTOR – How to replace the lamp – How to reset the lamp hour Timer  - How to Replace the roller filter – Roller filter counter reset

Mitsubishi Electric WL7200U:  How to replace the lamp
1. Unplug the power cord.
2. Loosen two screws (a) that are securing the lamp cover using a Philips screwdriver and remove the lamp cover (b) from the projector.

3. Loosen two screws (c) that are securing the lamp box to be removed using a Philips screwdriver.

4. Pull out the lamp box by the handle while holding the projector.

# Pull the lamp box out of the projector slowly. When the lamp is broken, glass fragments may be scattering by quickly pulling out the lamp box.
# Do not spill liquid on the removed lamp box or do not place it near any flammable object or where children can reach to prevent injury or fire.
5. Load a new lamp box securely into the projector in the right orientation.

6. Tighten two screws (c) of the new lamp box tightly using a Philips screwdriver.

# Make sure that the screws are tightened firmly.

7. Insert the lamp cover (b) into the projector and tighten two screws (a) on the lamp cover firmly using a Philips screwdriver.

# You cannot turn on the projector without attaching the lamp cover.

Reset of the lamp operation time
Plug in the power cord and reset the lamp operation time by holding down the LEFT,RIGHT, and POWER buttons on the control panel at the same time about 3 seconds.

Important:
# Unless these 3 buttons are pressed at the same time, the lamp operation time isn’t reset.
# Make sure that the STATUS indicator blinks twice and the lamp operation time is reset successfully.
# The projector doesn’t turn on if the lamp cover isn’t attached securely.
# Be sure to reset the lamp operation time whenever you replace the lamp.
# Do not reset the lamp operation time unless you replace the lamp.
# The lamp is fragile. If it is broken, be careful not to cut yourself with glass fragments.

Cleaning of the projector and the ventilation slots
Use a soft cloth to clean the projector and the ventilation grilles. When the grilles become dirty, wipe them with a soft
cloth dampened with diluted mild detergent, and then wipe them with a dry cloth.
# Clean the inside of the terminal cover frequently as dust is apt to be collected.
To protect the surface of the projector from fading or deteriorating:
# Do not spray insecticide on or inside the projector.
# Do not use benzine or thinner to clean it.
# Do not let rubber or plastic materials contact with projector.
Cleaning of the lens
Use a standard lens-cleaning brush or a piece of lens tissue dampened with lens cleaning fluid. The lens surface is
fragile. Use only recommended, nonabrasive lens-cleaning materials. Do not touch the lens with your fingers.

Roll-up filter

Setting the roll interval
You can set the roll interval of the roll-up filter using the menu.
1. Display the FEATURE menu.
2. Select FILTER MENU by pressing the UP or DOWN button.

3. Press the ENTER button.
4. Select AUTO ROLL UP PERIOD by pressing the UP or DOWN button.

5. Select OFF, EVERY 500H, EVERY 750H or EVERY 1000H by pressing the RIGHT or LEFT button.
OFF.................The filter does not roll automatically. Roll the filter manually when the filter is clogged.
EVERY 500H...The filter rolls about every 500 hours.
EVERY 750H...The filter rolls about every 750 hours.
EVERY 1000H..The filter rolls about every 1000 hours.
Important:
If you select the interval which is shorter than the current filter usage time, the filter rolls once after 1 minute.
The manual roll-up
1. Display the FEATURE menu.
2. Select FILTER MENU by pressing the UP or DOWN button.

3. Press the ENTER button.
4. Select MANUAL ROLL UP by pressing the UP or DOWN button.

5. Press the ENTER button.
Confirmation dialog appears.

6. Press the ENTER button or MENU button.
When you press the ENTER button, the filter rolls once.
To cancel the setting, press the MENU button.

How to replace the roll-up filter
When the filter rolls 9 times, the FILTER indicator blinks red. In this case, prepare a new filter cartridge. When the last filter is clogged, replace the filter cartridge. Before replacing the filter, be sure to turn off the power of the projector and unplug the power cord from the outlet.
1. Unplug the power cord.
2. Loosen two screws (a) that is securing the filter cover using a Philips screwdriver and remove the filter cover (b) from the projector.

3. Remove the roll-up filter cartridge.

5. Insert the filter cover (b) into the projector and tighten two screws (a) on the filter cover firmly using a Philips screwdriver

Reset of the roll counter of the filter

Plug in the power cord and reset the roll counter of the filter (REMAINING FILTERS and FILTER USAGE TIME) by holding down the LEFT, RIGHT and ENTER/GEOMETRY buttons on the control panel at the same time about 3 seconds.
Important:
# Unless these 3 buttons are pressed at the same time, the counter isn’t reset.
# Make sure that the FILTER indicator blinks 3 times and the counter is reset successfully.
# The projector doesn’t turn on if the filter cartridge or the filter cover isn’t attached securely.
# Do not reset the counter unless you replace the filter cartridge.

MITSUBISHI WS 55517 - PROJECTION TV - POWER SUPPLY SCHEMATIC

MITSUBISHI WS 55517 - PROJECTION TV - POWER SUPPLY SCHEMATIC

SMPS SCHEMATIC  [Click on the Schematic to Zoom In]

HOW TO REPLACE OPTICAL ENGINE - WD62725 - MITSUBISHI PROJECTION TVs

MITSUBISHI WD-52525 - WD-52725 - WD-52825 - WD-62525 - WD-62725 - WD-62825

HOW TO REPLACE OPTICAL ENGINE - WD62725 - MITSUBISHI PROJECTION TVs

OPTICAL ENGINE REPLACEMENT

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.

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.

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.

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.

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]

MITSUBISHI WD-52525 DLP TVS ERROR CODES - FRONT LED BLINKING CODES - ADJUSTMENTS -

WD-52525 _ WD-52725 _ WD-52825 _ WD-62525 _ WD-62725 _ WD-62825 DIGITAL LIGHT PROCESSING™ PROJECTION TVs Universal Remote Control Set-up Codes

FRONT LED INDICATOR DIAGNOSIS

The front panel LEDs provide an indication of the sets operation, and the possible cause of a malfunction. There are three front panel LEDs, “Power”, “Status” and “Lamp”. Which LED is lit, the colour, and whether it is blinking or steady indicate the current status, or a possible malfunction.

Error Code Operational Check
Note: The TV must be in “Shut Down” and not manually switched Off, to perform the Error Code Operational Check. When the TV is switched Off, the code automatically resets to “12” No Error.
Press the front panel “DEVICE” and “MENU” buttons at the same time, and hold for 5 seconds to activate the Error Code Operational Check. The LED will then flash denoting a two digit Code.
Note: The front panel buttons must be used, NOT those on the Remote Control. • The number of flashes indicates the value of the MSD (tens digit) of the Error Code.

* The flashing then pauses for approximately 1/2 second.

* The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.
Example: If the Error Code is “32”, the LED will flash three times, pause, and then flash two times.

The Error Code is repeated a total of 5 times.The Error Code designations are:

SERVICE ADJUSTMENTS

There are only 5 Service Adjustments required:
Two Electrical Adjustments
1. Horizontal Centering
2. Vertical Centering
Three Mechanical Adjustments
1. Picture Rotation
2. Horizontal Keystone Distortion
3. Vertical Keyst

Circuit Adjustment Mode
On these models, the Circuit Adjustment Mode is used only for:
* Test Signal activation
* Horizontal Cantering
* Vertical Cantering one Distortion.

Activating the Circuit Adjustment mode

1) Press the “TV MENU” button on the remote control. (The Customer Menu will appear.)
2) Press the buttons “2”, “4”, “5” and “7” in that order.  (The screen will change to the adjustment mode.)
If unsuccessful, repeat steps 1 and 2.

Test Signal Activation
When in the Circuit Adjustment mode, press “REWIND” once on the remote control to activate the test pattern.  This pattern is used for both electrical and mechanical adjustments.

Adjustment Function Selection
Use the “AUDIO” button to select a specific Adjustment Function.

Adjusting Data
After selecting an adjustment item, use the UP and DOWN cursor buttons to change adjustment data.
* If the UP button is pressed, the adjustment data increases.
* If the DOWN button is pressed, the adjustment data decreases.

Saving data
* Press “ENTER” to save the adjustment data in memory.  The display characters go red for about one second in this step.  [If the circuit adjustment mode is terminated without pressing
“ENTER”, changes in adjustment data are not saved.]

Terminating the circuit adjustment mode
Press the “HOME button or the “MENU” button twice on the remote to terminate the adjustment mode. [The adjustment mode can be also terminated by turning the power off.]

Resetting Data to Factory Values
1. Enter the Service Adjustment Mode ... Press “TV MENU” “2-4-5-7”
2. Press “0” when in the Service Mode ... Three choices appear at the top of the screen.

Use UP & DOWN keys to highlight the desired choice, then Press “ENTER”
* Copy Light Engine EEPROM to DM ... required after replacing the Light Engine or Electrical Chassis.
* Restore Back Up ... resets Service Mode data back to factory values. Use this feature if service adjustment data has been corrupted or improper adjustments have been performed.

* Up Load Terminal Board Data ... uploads White Balance data from PWB-SIGNAL. (Do Not Select. This option is for depot level service only.) Universal Remote Control Set-up codes to Mitsubishi brand TVs

0007 0013 0018 0049 0065 0101 0105 0119 0131 0152 0154 0161 0190 0209 0221 0247 0324 0454

CLICK ON THE PICTURES TO MAGNIFY

HOW TO REPLACE LAMP BALLAST - DEFAULT SETTING VALUES - MITSUBISHI DLP PROJECTION TVs

MITSUBISHI WD-52525 - WD-52725 - WD-52825 - WD-62525 - WD-62725 - WD-62825 - DIGITAL LIGHT PROCESSING [DLP] PROJECTION TV 

HOW TO REPLACE LAMP BALLAST - DEFAULT SETTING VALUES - MITSUBISHI DLP PROJECTION TVs

 

Lamp ballast Removal – Lenticular screen & Fresnel  lens – Initial set-up _ Default data values.

To remove the chassis, the two connectors to the Lamp Ballast must be disconnected at the Lamp Ballast.

Accessing & Disconnecting the Lamp Ballast
Removing the Right Support
Remove the 3 screws shown.

SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
CAUTION: Wear gloves when handling the Lenticular Screen and Fresnel Lens.  This prevents cuts and finger prints. Do not place Fresnel Lens in the sun.  This may cause fire and heat related injuries.

Lenticular Screen and Fresnel Lens Removal
1) Remove the screen assembly shown in the Cabinet Disassembly procedure.
2) Remove the four screws (a) to remove the bottom of the SCREEN-FRAME-BOTTOM .
3) Carefully slide the Lenticular Screen and Fresnel Lens combination from the Screen Frame assembly
Note: When separating the Lenticular Screen from the Fresnel Lens, use caution while prying the Screen and Lens apart. Use a slot type screw driver, and remove the pressure sensitive double sided tape.

Lenticular Screen and Fresnel Lens Installation
Note: Store the Lenticular Screen and Fresnel Lens in a cool dry place. High heat and humidity may deform the Lenticular Screen and Fresnel Lens.
1) Apply double coated tape (Part #LENS-TAPE) along the top rear edge of the Lenticular Screen, as shown.
2) Place the Fresnel Lens on top of the Lenticular Screen and apply pressure at the top edge to bond them together.
3) Reverse the Screen Removal procedure to insert the screens in the Screen Frame 

Assembly.

INITIAL SETUP: OPTION MENU

* Press the “MENU” button on the remote hand unit.
* Press the buttons “2”, “4”, “7” and “0” in order.  (The screen will change to the option menu.)

A/V Memory
Each of the external inputs has its own Audio/Video Memory. A change in an A/V setting at a specific input is stored in memory for that specific input.
A/V Reset
The AV Memory Reset in the user’s menu initializes the selected input’s A/V Memory.
Remote Control Operational Modes
There are two Remote Hand Unit Operational Modes, “Standard” and “Net Command”. The Remote is initially in the “Standard” mode. The “Net Command” mode is used when controlling Home theater devices using Net Command. 

To change the Remote Operational Mode
* Set the Remote to the TV Layer • Point the Remote away from the TV. • To change to “Netcommand” ... Hold the “Power” button and press “9-3-5” in sequence.

* To change to “Standard” ... Hold the “Power” button and press “0-0-0” in sequence.

CLICK ON THE PICTURES TO ZOOM IN