Sony Bravia LED TV - Sony KDL-50W800B – How to access service mode – How to enter to self diagnostic mode

Sony KDL-50W800B:  DIAGNOSING THE ERROR
Before servicing the Television:
1. Verify the TV has the symptom the customer indicated.
2. Check to see if the latest Software is installed.
a. If not, install the latest version.
3. Determine the replacement part required.
VIEWING THE SELF CHECK DIAGNOSIS HISTORY
When an error is detected, the Self Check screen records the number of times the error occurred. This is helpful in confirming past occurrences of an error and for determining if an error is intermittent when the customer is not sure what is causing the television to shut down. If the screen displays a “0”, no error has occurred.
1. Press POWER to turn on the TV and then turn it off again.
2. Press the following buttons on the Remote Commander within 1 second of each other:
Info i + Channel 5 Volume – POWER

Update the Software.
a. Insert the USB device with the latest Software into one of the TVs’ USB ports.
b. Connect TV to AC power.
c. Wait at least 20 seconds.
d. Press POWER on the remote to turn ON the TV.
e. Wait until the Software update is completed

1. To access Service Mode

Turn TV ON and OFF again then press the following buttons within 1 second of each other:
Info i + Channel 5 Volume + POWER
2. When the DIGITAL Menu appears, press 2 until 002 MODEL category displays.

3. Press 1 until 002 DEST item displays

4. Press 3 until the correct destination of the TV displays. (Use the below for reference).

KDL-50W800B  - US/CND - ATSC_UC_BASE

5. Press MUTE then 0 to save the changes

6. Press 1 until 003 MODELNAME displays

7. Press 3 until the model displayed matches the model of the TV.
CAUTION: The Model Name can only be selected once. Be sure to verify the information is correct before saving the changes.
8. Press MUTE then 0 to save the changes.

9. Locate the Serial Number for the TV on the side of the Rear Cover.

10. Press 1 until 004 SERIAL item displays.

11. Press 0 to display the Serial Number Edit option.

12. Press to display the Serial Number input screen

CAUTION: The Serial Number can only be selected once. Be sure to verify the information is correct before saving the changes.
13. Enter the Serial Number of the TV.
NOTE: If the incorrect Serial Number is entered, press RETURN to go back to the Serial Number input screen and re-enter the correct number.
14. Press to save the Serial Number.

15. Press 1 until 006 VAR_TYPE item displays.

16. Press 3 until STD option displays.

17. Press MUTE then 0 to save the changes.

18. Cycle AC Power (Unplug and plug AC Cord from the outlet).
19. Access Service Mode, by pressing the following buttons within 1 second of each other:
Info i + Channel 5 Volume + POWER
20. When the DIGITAL Menu appears, press 2 until 002 MODEL category displays.

21. Press 0 to select the 000 BOARD CHECK item.

When replacing the Main Board and/or Tuner Board:
22. Press 1 to verify the Main Board replacement results.
NOTE: Either one of the following messages indicates a correct process.

CAUTION: If the Main Board is a mismatch to the Tuner Board, a “NG: WRONG COMBINATION OF MAIN BOARD AND TUNER BOARD” will display.

23. Press RETURN then MUTE and 0 to save the changes.

When replacing the Tuner Board only:
32. Press 2 to verify the Tuner Board replacement results.

CAUTION: If the Tuner Board is a mismatch to the Main Board, a “NG: DIFFERENT KIND OF TUNER BOARD HAS BEEN CONNECTED” will display.
24. Press RETURN then MUTE and 0 to save the changes.

25. Clear the Self Check screen.
a. Press POWER to exit Service Mode.
b. Press the following buttons on the Remote Commander within 1 second of each other:
Info i + Channel 5 Volume – POWER

c. To clear the error history and error count press 8 0 .
d. Press POWER to exit Self Check Mode.
26. Cycle AC Power (Unplug and plug AC Cord from the outlet).

HP Slate 7 Tablet – Disassembling procedure – How to remove the case – How to remove the battery – How to remove the Antenna

HP Slate 7 Tablet:  DISASSEMBLING PROCEDURE 

How to remove the Tablet cover

Before removing the disassembling the tablet, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
Remove the tablet cover:

1. Position the tablet with the display panel down and the right side toward you.
2. Carefully insert a thin plastic tool  between the tablet cover and the display panel assembly, separating the two components.

3. Continue to work the tool away from the top edge of the tablet until the bottom edge of the tablet cover  is completely separated from the display panel assembly.

4. Remove the tablet cover 

How to remove the Battery

Before removing the battery, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover

Remove the battery:
1. Disconnect the battery cables  from the system board.

2. Insert a thin, plastic tool between the left side of the battery and the display panel assembly and detach the battery from the display panel assembly. (The battery is attached to the display panel assembly with double-sided adhesive.)

3. Remove the battery 

How to remove the Front-facing web camera

Before removing the front-facing web camera, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover
5. Disconnect the battery cable from the system board
Remove the front-facing web camera:
1. Release the zero insertion force (ZIF) connector (1) to which the front-facing web camera cable is attached, and then disconnect the front-facing web camera cable from the system board.

2. Remove the front-facing web camera and cable.

How to remove the Rear-facing web camera

Before removing the rear-facing web camera, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover
5. Disconnect the battery cable from the system board
Remove the rear-facing web camera:
1. Release the ZIF connector  to which the rear-facing web camera cable is attached, and then disconnect the rear-facing web camera cable from the system board.

2. Remove the rear-facing web camera  and cable.

How to remove the Antenna

Before removing the antenna, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover
5. Disconnect the battery cable from the system board
Remove the antenna:
1. Disconnect the wireless antenna cable  from the system board.

2. Insert a thin, plastic tool  under the left side of the wireless antenna transceiver and detach the transceiver  from the display panel assembly. (The wireless antenna transceiver is attached to the display panel assembly with double-sided adhesive.)

3. Disconnect the GPS antenna cable  from the system board.

4. Insert a thin, plastic tool  under the left side of the GPS antenna transceiver and detach the transceiver (3) from the display panel assembly. (The GPS antenna transceiver is attached to the display panel assembly with double-sided adhesive.)

Apple MacBook Air 13 – How to replace the Solid state Drive of apple MacBook – How to replace the Airport Card

Apple MacBook Air 13:  AirPort Card Replacement

Before proceeding, close your computer and lay it on a soft surface top-side down. Remove the following ten screws: Two 9 mm 5-point Pentalobe screws
Eight 2.6 mm 5-point Pentalobe screws
The special screwdriver needed to remove the eight 5-point Pentalobe screws.

Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air. Remove the lower case and set it aside.

For precautionary purposes, we advise that you disconnect the battery connector from the logic board to avoid any electrical discharge. This step is optional and is not required. Grab the clear plastic pull tab attached to the battery connector and pull it toward the front edge of the Air to disconnect the battery from the logic board. Do not lift upward on the connector as you disconnect it.

Use the flat end of a spudger to pry both antenna connectors up from their sockets on the AirPort/Bluetooth card.

Remove the single 2.9 mm T5 Torx screw securing the AirPort/Bluetooth card to the logic board.

Slightly lift the free end of the AirPort/Bluetooth board and pull it out of its socket on the logic board. Remove the AirPort/Bluetooth board from the Air.

Solid-State Drive Replacement

Remove the single 2.9 mm T5 Torx screw securing the SSD to the logic board.

Do not lift the end of the SSD excessively. Slightly lift up the end of the SSD and pull it straight out of its socket on the logic board.

When reinstalling the SSD, be sure it is properly seated before reinstalling its retaining screw.

Nokia Lumia 920 – How to replace the camera – How to replace the power button ribbon – How to replace the Volume button

Nokia Lumia 920: How to replace Power Button cable , Volume button and camera 

Make sure the phone is off. Use the T5 screwdriver to remove the two 8.6mm long screws, located at the bottom of the phone. (Head size is 2.5mm)

Use the smallest Torx screwdriver or another small poking tool and push into the hole on the SIM card slot. The plastic SIM protective piece should pop out quite easily. Put that plastic piece aside.

Once both screws on the bottom are removed, and the plastic SIM protective piece is removed, gently push on the outside of the screen. The screen should become separated using little force. And should like the pictures shown once complete.

This step may be easier to remove the battery first, but it is not mandatory.

Place the spudger tool or flat plastic tool on top of the ribbon cable to avoid damaging it when prying up on the metal clip.

Use a plastic opening tool, or gently use a small metal flat-head screwdriver to pry up the metal clip. (It is recommended to use a plastic tool; However, if the opening tool does not work or fit into the small opening underneath the clip, use the flat-head.)

Once the metal clip is removed, gently pry up on the ribbon cable connection, located underneath the metal clip you have just removed.

Prerequisite step: Back panel removal Use the T4 torx screwdriver to remove the 3mm screw (diameter of the head is 1.5mm) fastened to the metal clip, holding the battery in place.

Using the plastic opening tool, pry up on the metal clip holding the battery in place. Completely remove the clip.

Use a plastic opening tool. Start on the right, and gently lift up on the copper strip. You do not have to completely remove the copper strip, only enough so that the connection to the battery is visible.

Use a plastic opening tool or spudger, and gently lift up on the connective piece.

Use a plastic opening tool at the bottom of the battery and gently lift. The battery should lift out easily.

Prerequisite guides: Back panel removal, Battery Removal Use the plastic opening tool to gently lift up on the connective piece attached to the volume, camera, and power button strip.

Flip the front panel on its side with the strip you are working on facing upward.

Use a spudger tool and starting at the top, gently pry the button sensors up.

Slide the tool underneath the strip and pry up the next button sensor.

Do this down the line until the strip becomes completely detached.

The power strip should look like this fully detached.

Sony Bravia FULL HD 3D Edge LED TV to access service mode - Panel led blinking and faulty section

Sony Bravia FULL HD 3D Edge LED TV – Sony KDL-32HX751 - KDL-40HX751 - KDL-46HX751 - KDL-55HX751 – How to access service mode -  Panel led blinking and faulty section – Service adjustments 

Sony KDL-32HX751 - KDL-40HX751 - KDL-46HX751 - KDL-55HX751 - Edge led 3D TV 

SELF DIAGNOSIS FUNCTION 

If an error occurs, the STANDBY LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem.
A definition of the STANDBY LED flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these.

DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash a set number of times to indicate the possible cause of the problem.
If there is more than one error, the LED will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred .

SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for confirmation on the screen:
To Bring Up Screen Test
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

DISPLAY > Channel 5 >Volume - >TV POWER

LED BLINKING CODES AND CAUSES 

STBY LED Flash time	Service menu Item name (Screeen Display)	Diagnostic Item Description
2	MAIN_POWE	Main 12 V failure
3	DC_ALERT	Main 5.0/3.3/1.2 V failur
	AUD_PROT	Audio amp. Protection
	HDMI_EQ	HDMI equalizer/switch I2C NACK
	TU_DEMOD	Tuner or demodulator I2C NACK
4	LD_ERR	LED driver failure/LED voltage protection
5	P_ID_ERR	Panel ID EEPROM I2C NACK
	HFR_ERR	FRC device I2C NACK
	TCON_ERR	FRC device Initialization failure
	TCON_ERR	E Micro (PEM) not started
6	BACKLITE	Backlight converter OVP
7	TEMP_ERR	Over temperature protection
	TEMP_ERR	Temp. sensor I2C NACK
8	-	Software Error (Also the main board’s memory or Wi Fi module is a suspect)
10	EMIT_ERR	Transmitter board not connected, protection 3D models only)

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen.

After you have completed the repairs, clear the result display to “0”.

Clearing the Self Check Diagnostic List
1. Error history and Error count : Press the Channel 8 => Channel 0 .
2. Panel operation time : Press the Channel 7 => Channel 0 .

Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.

HOW TO ENTER SERVICE MODE
1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode.

DISPLAY > Channel 5 > Volume + > TV POWER

3) Service mode display.
Note: First of all, when you enter Service Mode, you can see “Digital” service mode. Whenever you press “OPTIONS” or “JUMP” on remote, each service mode is changed. “Digital” -> “Chassis” -> “VPC”

CHANGE DATA
Note: “Digital” service mode don’t have to Save. (except “002 MODEL” and “005 CHPRSET” category)
1) Change Data of “Digital” service mode. (except “003 DIG_SRV_MODE” category)
a. Press “2 / 5” on remote to select (up / down) category.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “3 / 6” on remote change (up / down) data.
2) Change Data of “Digital” service mode. ( “003 DIG_SRV_MODE” category) “003 DIG_SRV_MODE” is one category of “Digital” service mode.
Please note because this operation is special.
a. Press “2 / 5” on remote to select “003 DIG_SRV_MODE”.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
d. Press number key “1”~”9” directly. “*” stamp move.
e. Press “12 / enter / select” to decide and advance next step. Press “return”, when returning on the previous page

SAVE CHANGING DATA
1) Write data for “Chassis” or “VPC” service mode
a. Press “Mute” on remote.
It shows green “SERVICE” changes to green “WRITE”.
b. Press “0” or “enter” on remote. Green “WRITE” changes to red “WRITE”. It indicate writing is processing.
c. After a while, red “WRITE” changes to green “SERVICE”. Writing process is done at this point.
2) TV reboot is necessary for applying data change.

WHITE BALANCE ADJUSTMENT
Note: Please execute this adjustment if necessary.
Change Data of “VPC” service mode. (“006 WB” category)
a. Press “1” or “4” on remote to select WB adjustment menu.
b. Change data by pressing “3” or “6”. Each range of these items is 0~255.
c. Press “mute” ”0” on remote to save the data.
“SERVICE” comment is changed to “WRITE”, indicating writing process.
d. After a while, “WRITE” comment returns to “SERVICE”, which means writing process is done.

VCOM ADJUSTMENT
Note: Please execute this adjustment if necessary.
1) Change Data of “VPC” service mode.
a. Select “002 VCOM” category by pressing “2 / 5” on remote.
b. Select “000 ENABLE” item by pressing “1 / 4” on remote.
c. Change ENABLE from “0” to “1” to enable VCOM adjustment.

d. Select “002 VCOM” category by pressing “2 / 5” on remote.
e. Select “001 ADJUST” item by pressing “1 / 4” on remote.
f. Change data by pressing “3 / 6” on remote controller.
g. Finish the adjustment when the picture seems OK.

Attention:
Every time the data changed by pressing “3 / 6” Key, the VCOM pattern will display for 5s and in the mean time OSD will disappear, After the 5s period, VCOM pattern will disappear and OSD will display again.
The 5s time can be adjust by data change.
If pressing the “3/6” key again during the 5s period, the VCOM pattern display time will be extended to another 5s.

Panasonic HDC-Z10000P – How to enter to service mode – Error codes

Panasonic High Definition Video Camera – Panasonic HDC-Z10000P – How to enter to service mode – Error codes – Power on self check – Lens failure diagnostics
 Panasonic HDC-Z10000P:  Service Mode

Indication method of the service menu
Set the mode switch "Recording" mode.
Keep pressing the "MENU" button, "Zoom lever" to W side and "FOCUS A/M/ " button for more than 3 seconds until the top screen of the Service Mode Menu being displayed.

Service mode menu

Screen display	Contents	Function
1	Factory settings	Function to throw a product up in a factory shipment state
4	Lock search history indication	Display the camera system error cord for three histories saved in EEPROM
5	Power ON self check result display	Power ON self check (function to diagnose correct function of the device and interface between devices) result display
10	Erasing the lock histories	Erasing the error histories (working time is not erased)
12	Camera data indications while the video playback	Display the camera informations (Shutter speed, Iris value, White balance and focal length) while playing recorded video

NOTE:

Do not using service mode except above table of Service mode menu.
3. End method of the top screen of the service mode menu
Touch the [ EXIT ] of LCD to end the service mode, and then POWER OFF.

Lock Search History Indication
Touch the [ 4 ] of LCD, select Lock search history indication.

Indication contents
Lock search history indication
Display the camera system error cord for three histories saved in EEPROM.
The error cord contents which are displayed

51 - Focus control ( L ) is abnormal
52 - Zoom control ( L ) is abnormal
53 - OIS lens control ( L ) is abnormal
D1 - Focus control ( R ) is abnormal
D2 - Zoom control ( R ) is abnormal
D3 - OIS lens control ( R ) is abnormal
33 - IC3401 internal communication is abnormal.

Cutting of battery connection or AC power supply connection to end the service mode.

Power ON Self Check Result Display
Touch the [ 5 ] of LCD, select Power ON self check result display.

Indication contents
Power ON self check result display
Function to diagnose correct function of the device and interface between devices result display.
Display the following communication test result.
-CAM-PWR : Communication test between IC3401 to IC2304
-CAM-UNI : IC3401 internal communication test.
Display other than "OK" are abnormalities of each lines.
Cutting of battery connection or AC power supply connection to end the service mode.

Erasing the lock histories
Touch the [ 10 ] of LCD, select erasing the lock histories execution.

Indication contents
Erasing the error histories stored in EEPROM. (working time is not erased)
Press the power button and turn off.

Camera data indications while the video playback
Touch the [ 12 ] of LCD, select indicating the camera informations while playing back the recorded video.
Operation specifications

Press the power button and turn off.

Failure diagnosis of a lens unit
When 3D Recording has abnormalities, please check the following and perform failure diagnosis of a lens unit.
Preparation
1. Set up HDC-Z10000 as follows.
# 3D Recording Mode
# 3D display is set to MIX display
# Convergence reset
# Display a guideline.

2. Set up connection as follows.
# Stick 3D inspection chart of attachment in adjustment software on the perpendicular surface of a wall etc.
# Install HDC-Z10000 in the front of 3D inspection chart.
# It fixes so that the horizontal line of 3D inspection chart and guideline may be displayed horizontally on LCD screen.
Figure of connection

The check of a Convergence Gap

1. Check by 2DTV (HDMI Connection).
2. Record a chart in a zoom W side and a macro mode (MACR set up with the USER button).
3. Check each distance X when the distance between a chart and a main unit is changed and the vertical bar of a right-and-left
picture is coincided on TV screen (or LCD screen).

4. When distance X is different from the following spec.  >The lens unit exchange.

zoom W side : X=1.4m±30cm
macro mode (zoom W side) : X=45cm±3cm

The check of a Right-and-Left Height Gap
1. Check by 2DTV (HDMI Connection).
2. Measure in each distance in a zoom T side(×10) and a macro mode (zoom W side).
zoom T side : X=1.4m±30cm
macro mode (zoom W side) : X=45cm±3cm
3. Check the amount of height gaps of the horizontal line of a right-and-left picture on TV screen.

When TV screen height has 0.8% or more of the amount of height gaps > The lens unit exchange.

Samsung Galaxy note 4 – How to replace the camera of Samsung galaxy Note 4

Samsung Galaxy Note 4:  How to replace the Front facing Camera 

Insert a fingernail or plastic opening tool into the divot to the left of the rear-facing camera. Gently pry and twist the flexible rear cover off the back of the phone.

Insert a fingernail or plastic opening tool into the recess in the bottom right corner of the battery and lift upward

Remove the SIM card by first pushing the card slightly out of its housing, then pulling it the rest of the way.

Remove the sixteen 4.0 mm Phillips #00 screws securing the midframe to the display assembly. Grasp the cap of the S Pen and remove it from its slot in the midframe.

Insert a plastic opening tool between the midframe and the display assembly. Work the plastic opening tool around the perimeter of the phone to break the adhesive.

This adhesive is relatively weak, so no heat gun should be necessary. Be careful to not separate the front glass panel from the rest of the display assembly, as it is still held together with adhesive.

Use a plastic opening tool to loosen the clasps around the battery housing.

Push on the battery housing to separate the midframe from the display assembly. You will have to apply a reasonable amount of pressure to separate the two parts. If your new midframe does not come with a headphone jack assembly, you'll need to transfer the one from the old midframe into the new one. It can be pried loose with plastic opening tools, as it is held in place with several plastic pins.

Remove the two 2.9 mm Phillips #00 screws.

Use a set of tweezers to remove the two antenna cables.

Use a set of tweezers or the flat end of a spudger to disconnect the two ribbon cable connectors.

Gently lift the motherboard out of the phone.

Turn the motherboard over. Lift the metal tab up with the tweezers.

Turn the motherboard back over. Unclip the two plastic clips that connect the rear camera to the motherboard with your fingers.

Sony HD 3D Video Projector – Sony VPL-HW40ES – How to replace the lamp – How to clean the air filter – How to clean the lens – Projector repair and service 

Cleaning the lens

The lens surface is especially treated to reduce reflection of light. As incorrect maintenance may impair the performance of the projector, take care with respect to the following:
# Wipe the lens gently with a soft cloth such as a cleaning cloth or glass cleaning cloth.
# Stubborn stains may be removed with a soft cloth such as a cleaning cloth or glass cleaning cloth lightly dampened with water.
# Never use solvent such as alcohol, benzene or thinner, or acid, alkaline or abrasive detergent, or chemical cleaning cloth, as they will damage the lens surface.
Cleaning the cabinet
# To remove dust from the cabinet, wipe gently with a soft cloth. If dust is persistent, wipe with a soft cloth slightly moistened with a diluted mild detergent solution.
# Never use any type of abrasive pad, alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, benzene, thinner or insecticide.
# Using such materials or maintaining prolonged contact with rubber or vinyl materials may result in damage to the screen surface and cabinet material.

Replacing the Lamp and the Air Filter and Cleaning

1. Turn off the projector and unplug the AC power cord.
2. When setting the projector on a flat surface such as a desk etc.,
put a cloth to prevent the surface from being scratched. Reverse the projector as illustrated, then place it on the cloth.

3. Loosen the screw on the lamp cover with a Philips screwdriver, and then open the lamp cover.

4. Loosen the 3 screws on the lamp with the Phillips screwdriver. Hold up the handle, then pull the lamp straight out.

5. Hold the handle of the new lamp and push it in securely until it reaches the end, and then tighten the 3 screws.

Be careful not to touch the optical block inside the unit.

6. Close the lamp cover, then tighten the screws.

7. Remove the filter holder.

8 Remove the air filter.

9. Attach the new air filter so that it fits into each claws (10 positions) on the filter holder.

Attach the air filter aligning it with the shape of the filter holder. Also, do not touch the fan after removing the air filter that is set deep inside the projector.
10. Attach the filter holder.

The projector will not turn on unless the filter holder is securely closed.

11. Wipe dust off the ventilation holes (intake) with a soft cloth.

12. Place the project back on its original position.

13. Turn on the projector, then select the desired setting item on the Setup menu. The menu screen below will be appeared.

Tip
If “Settings Lock” is set to “Level B,” set to “Off” once.
14.Select “Yes”.

Apple iMac G5 20 inch – How to replace the hard drive of Apple iMac G5 – How to remove the case – How to disconnect SATA connections

Apple iMac G5 20:  HARD DRIVE REPLACEMENT PROCEDURE 

Orient the iMac face-side down on a table with the bottom edge facing yourself. Remove the two Phillips screws securing the access door to the bottom grille of your iMac. The screws are captive in the access door.
Before beginning the repair, unplug the computer and press and hold the power switch for 20- 30 seconds, to discharge internal capacitors.

Remove the access door.

Remove the three T8 Torx screws securing the front bezel to the rear case along the lower edge of the iMac.

Turn the computer over. Use your thumbs to press both RAM arms in past the front bezel for enough clearance to lift it off the rear case.

While holding the RAM arms in with your thumbs, lift the lower edge of the front bezel enough to clear the rear case.

Re-orient your iMac so it sits upright on the stand.

Insert a plastic card up into the corner of the air vent slot near the top of the rear case.
Push the card toward the top of the iMac to release the front bezel latch.
Pull the front bezel away from the rear case.
Repeat this process for the other side of the front bezel. It may be necessary to apply several layers of duct tape to the top of the access card to aid in releasing the latches.
If the bezel refuses to release, try pressing the lower edge back onto the rear case and repeat this opening process.
Alternatively, you can use a strong magnet by holding it to the front top left/right corner of the display. You will hear a snapping sound when the hatch is released.

Lay your iMac stand-side down on a table. Lift the front bezel from its lower edge and rotate it away from the rest of your iMac, minding the RAM arms that may get caught. Lay the front bezel above the rest of the iMac.

If necessary, remove the piece of kapton tape wrapped around the microphone and camera connectors.

Disconnect both the camera and microphone cables.

Peel the lower EMI shield off the lower edge of the iMac and off the two vertical 4" sections on either side of the iMac. It is not necessary to peel the lower EMI shield off the display.

Tape the lower EMI shield up against the face of the display to keep it out of the way while you work.

Remove the two T6 Torx screws securing the display data cable connector to the logic board.

To disconnect the display data cable, grab its connector's black tab and pull it away from the face of the logic board.

Peel back the two EMI tape strips from the left and right edges of the display. During reassembly, it is helpful to use several small strips of tape to hold the EMI shielding along the left and right edges of the display footprint out of the way before lowering the display into the rear case of your iMac.

Remove the four recessed T10 Torx screws securing the display to the rear case. Bit drivers tend to be too short to reach these screws. Be sure to have a magnetic thin shafted T10 Torx screwdriver on hand.

Lift the lower edge of the display slightly out of the rear case. Disconnect both inverter cables (shown in red) by pulling their connectors toward the bottom edge of your iMac.

Lift the display until it is nearly perpendicular to the rear case. Disconnect the remaining two inverter cables (shown in red) by pulling their connectors toward the top edge of your iMac.

While holding the display perpendicular to the rear case, pull it upward to peel off the EMI shield stuck to its upper edge.

Disconnect the hard drive thermal sensor from the logic board by pulling its connector toward the top edge of your iMac.

Remove the two T10 Torx screws securing the hard drive bracket to the inverter.

Lift the left edge of the hard drive slightly, then pull it toward the left edge of the iMac. When reinstalling your hard drive, make sure not to push the rubber grommets through the chassis with the hard drive mounting pins as retrieving them may require removing the logic board.

Rotate the hard drive out of the rear case. Disconnect the SATA data cable by pulling its connector away from the hard drive.

Disconnect the SATA power cable by pulling its connector away from the hard drive. Remove the hard drive from the iMac.

Remove the two T8 Torx screws securing the hard drive bracket to the connector side of the hard drive. Remove the hard drive bracket.

Remove the two T8 Torx pins from the side of the hard drive. Use the flat end of a spudger to pry the hard drive thermal sensor off the adhesive securing it to the hard drive.

Sony STR-DG910 – Test mode - How to test the VFD – How to check the software version

Sony AV Receiver – Sony STR-DG910 – Test mode -  How to test the VFD – How to check the software version – How to test the function of key – FM tuner test – Power amplifier circuit diagram – Using transistor MN2466 – MP1620

Sony STR-DG910

TEST MODE

AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE (US, Canadian, E2 model only)
Either the 9 kHz step or 10 kHz step can be selected for the AM channel step.
Procedure:
Turn the [INPUT SELECTOR] control to set AM and press the POWER  button to turn off the main power.
While depressing the [TUNING MODE] button, press the POWER button to turn on the main power.
Either the message “9k STEP” or “10k STEP” appears for a moment and select the desired step.
VACUUM FLUORESCENT DISPLAY TEST MODE
All fluorescent segments are tested. When this test is activated, all segments light on at the same time, then each segment lights on one after another.
Procedure:
While depressing the [TUNING MODE] and the [DISPLAY] buttons simultaneously, press the POWER button to turn on the main
 1. ALL segments light on.

[MULTI CHANNEL DECODING] LED light on.
2. Turn the [INPUT SELECTOR] control, confirm display.

[MULTI CHANNEL DECODING] LED light off.
3. Turn the [INPUT SELECTOR] control, confirm display.

[MULTI CHANNEL DECODING] LED light on.
4. Turn the [INPUT SELECTOR] control, all segments and LED light off.
SOUND FIELD CLEAR MODE
The preset sound field is cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair.
Procedure:
While depressing the [2CH] button, press the POWER button to turn on the main power.
The message “S.F. CLR.” appears for a moment and initialization is performed.
SOFTWARE VERSION DISPLAY MODE
The software version is displayed.
Procedure:
While depressing the [SPEAKERS OFF/A/B/A+B] and the [DISPLAY] buttons simultaneously, press the POWER  button to turn on the main power.
The model name, destination and the software version are displayed for a moment.

KEY CHECK MODE
Button check
Procedure:
While depressing the [SPEAKERS OFF/A/B/A+B] and the [2CH] buttons simultaneously, press the POWER button to turn on the main power.
Either the message “REST 15” appears.
Every pressing of any button other than the POWER counts down the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “REST 00” appears.
SWAP ALL MODE
The signal will be swap to all channel so that all speaker will have sound output.
Procedure:
1. While depressing the [SPEAKERS OFF/A/B/A+B] and the [A.F.D.] buttons simultaneously, press the power POWER button to turn on the main power.
2. “SWAP” appears. (No change while displayed.)
SHIPMENT MODE
All preset contents are reset to the default setting.
Procedure:
1. While depressing the [SPEAKERS OFF/A/B/A+B] and the [MUSIC] buttons simultaneously, press the power POWER button to turn on the main power.
2. “CLEARED” appears and switch off the set.
DCAC TEST MODE
1. When power off:
Press the three buttons [TONE MODE] + [2CH] + POWER .

“MIC ON” appears.
2. Plug in DCAC MIC and test sound output from front speaker

FM TUNER CHECK

FM AUTO STOP CHECK
(1) Turn on the set.
(2) Input the following signal from Signal Generator to FM antenna input directly.
Carrier Frequency: A=87.5 MHz, B=98 MHz, C=108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)
(Note)
Please use 75 ohm “coaxial cable” to connect SG and the set. You cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
(3) Set to FM tuner function and scan the input FM signal with automatic scanning.
(4) Confirm that input Frequency of A, B and C are detected and automatic scanning stops.
The stop of automatic scanning means “The station signal is received in good condition.”

Blackberry Curve 8310 – Disassembling procedure – How to remove the case – How to remove the keyboard – How to remove the mother board

Blackberry Curve 8310:  DISASSEMBLING PROCEDURE 

Press down on the battery release button and slide the back cover up with your thumb.

Pry from the top of the battery to pull it out.

Slide the metal sim card cover to the unlock position. Remove the sim card. The arrows on the sim card enclosure indicate the lock and unlock positions.

Remove the two T5 Torx screws circled at the top of the phone. The T5 Torx screws may be covered by a white sticker.

Remove the red cover at the bottom of the phone. You may have to work a spudger underneath to release the plastic clips.

Be careful not to damage the front cover's plastic clips while trying to separate it from the phone.

Use a spudger to pry the front cover away from the side panels. Work the spudger around the entire phone until the front cover is free.

Remove the keyboard. Remove the four T6 Torx screws located on the corners of the keyboard frame.

Now remove the left and right side panels.

Remove the keyboard frame. Be sure to unhook the screen housing from the motherboard before continuing. Refer to the square indicated in the second picture. Now remove the screen housing.

Unplug the ribbon cable from the board. The ribbon cable is located at the top left of the phone above the screen. Insert tool between LCD screen and board. Pry LCD screen from board.

Separate the motherboard from the back case.

Apple MacBook Pro 17 – How to replace the Hard drive of Apple MacBook 17 – Laptop repair and service

Apple MacBook Pro 17:  HARD DRIVE REPLACEMENT PROCEDURE 

Remove the following ten screws securing the lower case to the upper case:
Three 13.5 mm Phillips screws.
Seven 3 mm Phillips screws.

Wedge your fingers between the lower case and the vent, and lift upward to release the clips holding the lower case to the upper case. Remove the lower case.

Whenever working near the logic board, it is always wise to first disconnect the battery to avoid short circuits. If present, grab the plastic tab attached to the battery connector and pull it toward the front edge of the device. For Late-2011 models the battery connector will not have a tab and is simply a plug that inserts straight down into the motherboard--to remove pry the plug straight up. If the plastic tab is missing, use a spudger to pry the connector up from its socket. Pull the tab parallel to the face of the logic board.

Remove the two Phillips screws securing the hard drive bracket to the upper case. These screws are captive to the hard drive bracket.

Remove the hard drive bracket from the upper case.

Use the hard drive's pull tab to lift it out of the upper case. Don't try to completely remove the hard drive just yet! Its cable is still connected.

Pull the hard drive connector away from the body of the hard drive. Remove the hard drive from your MacBook Pro.

Remove the four T6 Torx screws around the outer edge of the hard drive.

If desired, peel off the plastic pull tab and transfer it to your new hard drive.