Sportsart finess treadmill – Sportsart T655 – Error codes and cause – Detailed troubleshooting

Sportsart T655:  Error codes and causes

Safety-key

Console is not responding while the safety key is in place.

1. Check the console bridge board and safety key wiring connection.

2. Replace Safety-key

Replacement parts

Safety-key board
No power

Display is not lit up when power is turned on

1. Check product fuse

2. Check drive board fuse and power source LED

3. Check drive board LED and program IC

Replacement parts

1. Product fuse

2. Drive board

3. Control board

Incline doesn’t work

Pressing incline & no response

1. Check incline system wiring connections

Replacement parts

2. Test with a different drive board

1. Drive board

No/bad telemetry reception

Wearing strap, however no/bad heart rate signal

1. Check the Polar board wiring or replace it

2. Check interference sources, such as light or speaker

Replacement parts

1. Polar board

2. polar transmission

No/bad contact heart rate reception

No/bad HTR heart rate signal

1. Make sure palms are holding on the sensors.

2.Check the HTR board signal status

3.Check HTR wiring problem

Replacement parts

1. HTR board

2. HTR sensor

3. HTR wiring

Key not function properly (control board）

Key is not responding or stuck

1. Replace display key switches

Replacement parts

1. Control board key switches

2. Bridge board

Key not function properly (software key)

Key is not responding or stuck

1. Replace membrane keys

Replacement parts

1. Membrane keys

Key not function properly (key board)

Key is not responding or stuck

1. Replace key board

Replacement parts

1. Key board

2. Bridge board

ERR0R_1_1_

Abnormal serve motor encoder

1. Motor is not turning > Possible cause: bad EAC drive board

2. If motor is turning, replace speed Sensor

Replacement parts

1. Drive board

2. Serve motor encoder

ERR0R_1_2_

Serve motor too hot; speed limits to 10KPH

1. Check temperature switch wiring

2. Adjust the walk belt tension if the motor is too hot

3. Check to see if walk belt & deck needs replacement

ERROR_1_3

Motor over loading

1. Turn power off and back on to check

2. If issue persists, replace EAC drive board

ERROR_2_1_

IGBT over current

1. Turn the power off and on again to test

2. If issue persists, replace EAC drive board

ERR0R_2_2_

IGBT too hot

1. Turn the power off and on again to test

2. If issue persists, replace EAC drive board

3. Turn the power off and on again to test

4. If issue persists, replace EAC drive board

ERROR_3_1_

Abnormal incline motor zero setting

1. Check wire connections

2. Replace drive board

3. Replace incline motor

ERR0R_4_2_

Voltage too low

1. Check the power source to see if it is too low

2. If it is too many products shared in the same power source, rearrange the power source

ERROR_4_3_

Voltage is too high

1. Check to see if the power source voltage is too high

2. If the voltage is too high from incoming power source, then stop using treadmill and wait until it returns normal.

ERROR_8_1_

First time power on communication error

1. Bad wire connections

2. Bad EAC drive board

ERROR_8_2_

Communication error after power on

1. Turn power off and back on

2. Check for proper grounding

3. If issue persists, replace EAC drive board

Main fuse burnt

Fuse burnt as soon power on

1. Replace the fuse and check again

2. Check wiring for bad connections

3. Replace drive board

Main fuse burnt

Motor fuse burnt while pressing speed keys

1. Check for motor issue

2. Replace drive board

Main fuse burnt

Main fuse burnt while running on the treadmill

1. Adjust the walk belt tension or manually add lubrication

2. Check for wear condition on the walk belt & deck

Replacement parts

1.EAC drive board

2. Walk belt/deck

Product settings

1. Press <CHANGE DISPALYS> key 3 seconds; it will display English/metric, energy saving setting, program timer, total distance, total time as well as control board/drive board software versions

DETAILED TROUBLESHOOTING 

Problem power on

Circumstance: Display is not lit up when power is turned on

Possible causes: Incoming power issue or bad components

Troubleshooting:

1. Check product fuse & switch

2. Check all wire connections

3. Check drive board power indicator or replace it

4. Check control board power indicator and program IC

5. Replace EUP board

Burnt fuse

Circumstance: Fuse burnt as soon as power on

Possible causes:

1. Short circuit on the product components

2. Bad drive board Troubleshooting:

1. Check for broken wire or a short circuit on the wiring somewhere

2. Measure the voltage from the power cord

AC1- housing screw

AC2- housing screw Check for short

3. Replace drive board to test

4. Replace filter

Burnt fuse

Circumstance: Fuse burnt while pressing speed key to increase speed

Possible causes:

1. Short circuit inside the motor

2. Bad drive board

Troubleshooting:

1.Replace drive board and test

2. Replace motor and test

3. Replace sensor and test

Burnt fuse

Circumstance: Fuse brunt while running on the treadmill

Possible causes:

1. Poor contact on the fuse housing

2. Wear on the walk deck and belt

3. Bad EAC drive board

Troubleshooting:

1. Check for proper fuse and fuse housing installation

2. Check mechanical parts

A. Wear and tear condition on the walk belt & proper lubrication maintenance

B. Check for loose walk belt tension

3. Replace SAC drive board test

Bad key pads – soft/membrane keys

Circumstance: Key is not responding or stuck while pressing it

Possible causes:

1. Bad wire connections on the software key bridge board

2. Bad keys Troubleshooting:

1. Check the wire connectors on the soft key bridge board

2. Replace soft keys

Bad keys – soft/membrane keys (lower)

Circumstance: Key is not responding or stuck while pressing it

Possible causes:

1. Bad wire connections on the software key bridge board

2. Bad keys

Troubleshooting:

1. Check the wire connectors on the soft key bridge board

2.Replace soft keys

Bad keys - display

Circumstance: Key is not responding or stuck while pressing the console keys

Possible causes:

1. Bad key switches on the control board

2.Bad switch cushion placement

Troubleshooting:

1.Check switch cushions

2.Reaplce display tact switches

Bad telemetry heart rate reception

Circumstance: Bad or no telemetry heart rate reception

Possible causes:

1. Telemetry transmitter battery too low

2. Bad HR receiver board

3. Interference issue, such as lights, speakers

Troubleshooting:

1. Replace the transmitter battery

2. Check HR receiver board wiring

3. Replace the receiver board

Incline doesn’t work correctly

Circumstance: Incline can’t go up or down while pressing the incline keys

Possible causes:

1. Bad Zero switch

2. Bad wire connections

3. bad incline motor

Troubleshooting:

1. Check drive board wire connections

2. Check to see if Zero switch is returning to 0 positions

3. Check drive board incline indicator and output voltage

4. Replace drive board or incline motor to test

Fan is not working properly

Circumstance: No response while pressing <FAN> key

Possible causes:

1. Bad wire connections

2. Bad fan board

3. Bad fan motor

Troubleshooting:

1. Check bridge board wiring

2. Check fan wiring

3. Replace fan board or fan

LG G4 – Disassembling procedure – How to replace the mother board – How to replace the headphone jack

LG G4:  DISASSEMBLING PROCEDURE:  How to replace the Mother board 

Make sure the phone is powered off. Remove the rear cover by placing the plastic opening tool in the groove on the bottom left side of the LG G4 and gently prying up.

Place the plastic opening tool at the bottom edge of the battery and lift up. Carefully remove battery with your hands.

Remove the eleven 3.9 mm Phillips #00 screws found at the back of the phone.

Once all the screws have been removed, place the plastic opening tool in the lower left corner and firmly lift the cover up. Detach the cover with your fingers

Gently wedge the plastic opening tool under the ribbons where each of the two cables are connected, and gently lift up to detach the cable. This will allow you to remove the motherboard.

Remove the motherboard by lifting it up using the plastic opening tool and your fingers .

Headphone Port

Gently wedge the plastic opening tool under the ribbons where each of the three cables are connected, and gently lift up to detach the cable. This will allow you to remove the motherboard and give access the headphone port.

Remove the motherboard by lifting it up using the plastic opening tool and your fingers .

Place the plastic opening tool under the upper left corner of the headphone port, and lift up. The headphone port is held in place with adhesive so it may take some time to pry it loose. Remove the headphone port with your hands.

Sony AV Receiver – Sony STR-DE575 - K502 - K502P – Factory reset – FLD test mode – Sound filed test – DSP test

Sony STR-DE575 - K502 - K502P:  FACTORY PRESET MODE
All preset contents are reset to the default setting.
Procedure:
While depressing the VIDEO and the 2CH buttons simultaneously, press the power button to turn on the main power.
The message FACTORY appears and switch off the set.
While depressing the VIDEO and the 2CH buttons simultaneously, press the power button again. The message FACTORY appears and the present contents are reset to the default values.
AM CHANNEL STEP 9 KHZ/10 KHZ SELECTION MODE
Either the 9 kHz step or 10 kHz step can be selected for the AM channel step.
Procedure:
Set the FUNCTION to AM. Turn off the main power.
While depressing the TUNING+ button or the PRESET TUNING+ button, press the power button to turn on the main power. Either the message 9 k STEP or 10 k STEP appears. Select the desired step.
For US/Canadian/E model only
DSP VERSION DISPLAY MODE
DSP version is displayed.
Procedure :
While depressing the MD/TAPE and the A.F.D buttons simultaneously, press the power button to turn on the main power.

“ DSP ”and the version are displayed.
FLUORESCENT INDICATOR TUBE TEST MODE
All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another.
Procedure:
While depressing the MD/TAPE and the SHIFT buttons simultaneously, press the power button to turn on the main power.
1. All segments turn on.

All LED turn on.
2. Press the VIDEO button, confirm display

MULTI CHANNEL DECODING (blue), Digital Cinema Sound , LEVEL , SET UP , A.F.D and MODE LED turn on.

3. Press the VIDEO button, confirm display.

EQ , SUR , NAME and 2CH LED turn on.
4. Press the VIDEO button, All segments turn off.
5. Every pressing of the VIDEO button turns on each segment and LED one after another in the same order.
(Not only the VIDEO button, but also the other buttons such as DVD/LD , TV/SAT , MD/TAPE , CD , TUNER and AUX can be used.)
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 SOUND FIELD MODE button, press the power button to turn on the main power. The message SURR. CLR. appears and initialization is performed.
DEMONSTRATION MODE
Demonstration is performed.
Procedure :
While depressing the SET UP button, press the power button. The message appears and demonstration is performed.
To finish DEMONSTRATION MODE, press the power button while the introduction message appears in the display.
SOFTWARE VERSION DISPLAY MODE
The software version is displayed.
Procedure:
While depressing the TUNER and the SHIFT buttons simultaneously, press the power ?/1 button to turn on the main power. The model name, destination and the software version are displayed.
KEY CHECK MODE
Button check
Procedure:
While depressing the VIDEO and the SHIFT buttons simultaneously, press the power ?/1 button to turn on the main power.
“REST 36” appears.
Every pressing of any button other than POWER and SPEAKERS counts down the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “REST 00” appears.
When MASTER VOLUME is rotated in clockwise direction, “VOL MIN”, “VOL 1” to “VOL 48”, “VOL MAX” appear.

DSP TEST MODE
DSP tests are performed.
Procedure :
1. While depressing the LEVEL and CD buttons simultaneously, press the power  Button to turn on the main power.
2. Press the NAME button.
3. Select the item by pressing Cursor button ( < or > ).
4. Select the function by turning Jog dial if selection is necessary.

Insignia Flex 8 – Disassembling procedure – How to remove the case – How to remove the mother board – How to replace the speaker

Insignia Flex 8:  DISASSEMBLING PROCEDURE 

Insert a plastic opening tool into the seam between the back casing and the screen to separate the back casing from the tablet.
You may need to use a metal opening tool for extra prying power, but beware that it can scratch your device or damage the internal components if the tool is inserted too deep.
You will hear the tabs pop as you separate the back casing around the tablet.

Lift the back casing away from the rest of the device which should include the exposed circuit board and screen. Set the casing aside.

Use a plastic opening tool to flip up the black strip that is holding the orange camera ribbon near the module on the circuit board labeled "front camera" in white print. Repeat this action on the orange camera ribbon near the module on the circuit board labeled "back camera" in white print.

Use tweezers to gently pull on both orange camera ribbons in the opposite direction in which they are connected until they disconnect from the modules on the circuit board.

Peel the grey tape off of the device in order to separate the cameras and their respective ribbons from the rest of the device. Do not use excessive force while removing the tape to prevent tears in the ribbons.

Unscrew fifteen (15) 4mm Phillips #00 screws.

Wedge a plastic opening tool between the black clip and white module on the large, orange display ribbon in the middle of the circuit board. Pull the clip toward you with the plastic opening tool in order to completely disconnect the display ribbon. The black clip holding this ribbon can fly out if enough force is used. Be careful not to lose that black clip.

Use a plastic opening tool to flip up the black strip on the white module which is holding the connection between the other display ribbon and the circuit board. Once the black strip has been flipped up, the connection between the module and the ribbon has been unlocked. Use the spudger to pull the ribbon towards you in order to completely disconnect it from the circuit board.

Pry out the antenna board with a plastic opening tool which is located right above the black internal speakers. The antenna board is glued to the device, so some force might be needed.

Lift the circuit board from the screen underneath and set it aside.

Use a plastic opening tool to pry the LCD display away from the screen. Make sure the display ribbons are not tucked underneath the LCD display when reassembling the screen and LCD display (as shown in the first image of this step).

Turn the circuit board upside down so that the speakers are closest to you.

Wedge a plastic opening tool between the black and white modules on the circuit board to disconnect the wires of the speakers.

On the back side of the circuit board, use a plastic opening tool to pry open the plastic speaker housing. Use a metal opening tool for additional prying power, if needed. Metal opening tools should be used as a last resort, as they may cause further damage to the plastic speaker housing.

Desolder the speaker from its wires in the speaker housing. Repeat this step to remove the other speaker. You can pry the speaker out of the housing before desoldering the wire connections if you wish.

Lenovo Thinkpad S531 – How to remove the power on password – How to reset the HDD password – How to test the AC adapter – How to Check the battery pack

Lenovo Thinkpad S531: Power system checkout

To verify a power symptom, do the following:
1. Turn off the computer.
2. Connect the ac power adapter.
3. Turn on the computer. If the computer can be turned on, it means that either the battery pack or the ac power adapter is functional.
4. Insert a straightened paper clip into the emergency reset hole to reset the computer. If the computer is still powered on, it means that the ac power adapter is functional.
5. Turn off the computer.
6. Disconnect the ac power adapter and turn on the computer. If the computer can be turned on, it means that the battery pack is functional.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
“Checking the ac power adapter”
“Checking the built-in battery and operational charging”
“Checking the backup battery”
Checking the ac power adapter
You are here because the computer fails only when the ac power adapter is used.
If the power problem occurs only when the docking station or the port replicator is used, replace the docking station or the port replicator.

If the system status indicator does not blink three times when an ac power source is connected, check the power cord of the ac power adapter for correct continuity and installation.
To check the ac power adapter, do the following:
1. Unplug the ac power adapter cable from the computer.
2. Measure the output voltage at the plug of the ac power adapter cable. See the following illustration:

Note: Output voltage of pin 2 of the ac power adapter might differ from the one you are servicing.

3. If the voltage is not correct, replace the ac power adapter.
4. If the voltage is acceptable, replace the system board.
Note: Noise from the ac power adapter does not always indicate a defect.
Checking the built-in battery and operational charging.
To check for detailed battery status information, do the following:
For 7: Open the Power Manager program and click the Battery tab.
For 8: Open the Lenovo Support program and click Battery Health, or open the Lenovo Settings program and click Power.
To check whether the battery charges properly during operation, do the following:
1. Discharge the battery until the remained battery power is less than 50%.
2. Connect the computer to ac power to charge the battery. If the battery status icon in the Windows notification area indicates that the battery is not charging, remove the battery and let it return to room temperature.
3. Reinstall the battery. If the battery is still not charging, replace the battery pack.
4. Check the battery status icon again. If the same error still exists, replace the system board.
Checking the backup battery
To check the backup battery, do the following:

1. Disable the built-in battery. See “Disabling the built-in battery” on page 54.

2. Remove the backup battery. See “1080 Backup battery” on page 64.
3. Measure the voltage of the backup battery. See the following illustration.

How to remove the power-on password

If a supervisor password has been set and is known to the service technician, do the following to remove
the power-on password:
1. Turn on the computer.
2. When the ThinkPad logo comes up, immediately press F1.
3. Type the supervisor password to enter the ThinkPad Setup program.
4. Select Security.
5. Select Password.
6. Select Power-On Password.
7. Type the current supervisor password in the Enter Current Password field. Then leave the Enter
New Password field blank, and press Enter twice.
8. In the Changes have been saved window, press Enter.
9. Press F10 to save changes and exit the ThinkPad Setup program.
How to remove the hard disk password.
To remove a user hard disk password that has been forgotten, when the supervisor password and master hard disk password are known, do the following:
1. Turn on the computer.
2. When the ThinkPad logo comes up, immediately press F1 to enter the ThinkPad Setup program.
3. Select Security

4. Select Password.
5. Select Hard-disk x password, where x is the letter of the hard disk drive. A pop-up window opens.
6. Select Master hard disk password.
7. Type the current master hard disk password in the Enter Current Password field. Then leave the Enter New Password field blank, and press Enter twice.
8. Press F10.
9. Press F10 to save changes and exit the ThinkPad Setup program. The user hard disk password and the master hard disk password have been removed

Sony HCD-XB66/XB660 compact disc deck receiver – full schematic

E Model, Australian Model - HCD-XB66, Mexican Model - HCD-XB660

HCD-XB66, HCD-XB660 are the tuner, deck, CD and amplifier section in LBTXB66, LBT-XB660

CD Section

CD Mechanism Type: CDM37LH-5BD29A

Base Unit Name: BU-5BD29AL

Optical Pick-up Name: KSS-213D/Q-NP

Tape deck Section

Model Name Using Similar Mechanism: HCD-H881

Tape Transport Mechanism Type: TCM-220WR2

DIN power output (Rated) 140 + 140 watts (8 ohms at 1 kHz, DIN) 

Continuous RMS power output (Reference) 170 + 170 watts (8 ohms at 1 kHz, 10% THD) 

Peak music power output (Reference) 3,000 watts.

Sony HCD HB66 audio board schematic

Sony HCD HB66 main board schematic – 1 of 3

Sony HCD HB66 main board schematic – 2 of 3

Sony HCD HB66 main board schematic – 3 of 3

Sony HCD HB66 – power amplifier schematic

Sony HCD HB66 – BD board schematic

Sony HCD HB66 – panel board schematic

Gold’s gym 430 - Treadmill – Troubleshooting – How to adjust the speed sensor – How to tension the running belt of the treadmill

Gold’s gym 430:  TROUBLESHOOTING
Most treadmill problems can be solved by following the simple steps below. Find the symptom that applies, and follow the steps listed.

The power does not turn on

a. Make sure that the power cord is plugged into a surge suppressor, and that the surge suppressor is plugged into a properly grounded outlet Use only a single-outlet surge suppressor that meets all of the specifications.
b. After the power cord has been plugged in, make sure that the key is inserted into the console.
c. Check the reset/off circuit breaker located on the treadmill frame near the power cord. If the switch protrudes as shown, the circuit breaker has tripped. To reset the circuit breaker, wait for five minutes and then press the switch back in.

The power turns off during use
a. Check the reset/off circuit breaker (see the drawing above). If the circuit breaker has tripped, wait for five minutes and then press the switch back in.
b. Make sure that the power cord is plugged in. If the power cord is plugged in, unplug it, wait for five minutes, and then plug it back in.
c. Remove the key from the console. Reinsert the key into the console.
d. If the treadmill still will not run, please see the front cover of this manual.
The console displays remain lit when you remove the key from the console
a. The console features a display demo mode, designed to be used if the treadmill is displayed in a store. If the displays remain lit when you remove the key, the demo mode is turned on. To turn off the demo mode, hold down the Stop button for a few seconds. If the displays are still lit.

The displays of the console do not function properly
a. Remove the key from the console and UNPLUG THE POWER CORD. With the help of a second person, carefully tip the Uprights (73, 78) down. There may be two M4.2 x 16mm Screws (12) in the bottom of the Belly Pan (69). If there are, remove them. Note: A Phillips screwdriver with a shaft at least 5 in. (13 cm) long is required. Then, raise the Uprights.

Remove the three M4.2 x 19mm Washer Head

Screws (13) and carefully pivot the Hood (53) off.

Locate the Reed Switch (54) and the Magnet (42) on the left side of the Pulley (44). Turn the Pulley until the Magnet is aligned with the Reed Switch. Make sure that the gap between the Magnet and the Reed Switch is about 1/8 in. (3 mm). If neces sary, loosen the M4.2 x 19mm Screw (1), move the Reed Switch slightly, and then retighten the Screw. Reattach the Hood (not shown), and run the tread mill for a few minutes to check for a correct speed reading.

The incline of the treadmill does not change correctly

a. With the key in the console, press one of the Incline buttons. While the incline is changing, remove the key. After a few seconds, re-insert the key. The treadmill will automatically rise to the maximum incline level and then return to the minimum level. This will recalibrate the incline system.
The walking belt slows when walked on
a. Use only a single-outlet surge suppressor that meets all of the specifications.
b. If the walking belt is overtightened, treadmill performance may decrease and the walking belt may become damaged. Remove the key and UNPLUG THE
POWER CORD. Using the hex key, turn both rear roller bolts counterclockwise, 1/4 of a turn. When the walking belt is properly tightened, you should be able to lift each edge of the walking belt 2 to 3 in. (5 to 7 cm) off the walking platform. Be careful to keep the walking belt centered. Then, plug in the power cord, insert the key, and run the treadmill for a few minutes. Repeat until the walking belt is properly tightened

The walking belt is off-center or slips when walked on

a. If the walking belt is off-center, first remove the key and UNPLUG THE POWER CORD. If the walking belt has shifted to the left, use the hex key to turn the left rear roller bolt clockwise 1/2 of a turn; if the walking belt has shifted to the right, turn the bolt counterclockwise 1/2 of a turn. Be careful not to overtighten the walking belt. Then, plug in the power cord, insert the key, and run the treadmill for a few minutes. Repeat until the walking belt is centered.

b. If the walking belt slips when walked on, first re move the key and UNPLUG THE POWER CORD. Using the hex key, turn both rear roller bolts clock wise, 1/4 of a turn. When the walking belt is correctly tightened, you should be able to lift each edge of the walking belt 2 to 3 in. (5 to 7 cm) off the walking platform. Be careful to keep the walking belt centered. Then, plug in the power cord, insert the key, and carefully walk on the treadmill for a few minutes. Repeat until the walking belt is properly tightened.

ASUS Memo Pad FHD10 – Disassembling procedure – How to remove the case – How to remove the battery

ASUS Memo Pad FHD10 – Disassembling procedure – How to remove the case – How to remove the battery – How to replace the mother board

How to remove the mother board:  ASUS Memo Pad FHD10 

DISASSEMBLING PROCEDURE 

Plug out the charger and pull out the memory card if connected as a preliminary step.
Make sure that the device is turned off as a precaution.
Wedge the plastic opening tool between the front and back cover on every side as shown on the photos.
Slide the plastic opening tool back and forth to make sure that the back cover is disconnected.
Remove the back cover.

Remove the protective copper sticker and all duct tapes fixed on the device.
Locate the two ribbon cables attached to the motherboard. Using tweezers, remove the cables away from their sliders.
Use the tweezers accurately as shown on the images, and apply a minimum force to remove the cables to prevent any damage.

Unscrew four #00 Philips 2 mm screws holding the battery tray in place.
All screws removed from the device in this guide and accompanying guides are the same, so continue to use the #00 Philips head screwdriver.

Locate the battery cable attached to the motherboard. Remove the cable gently using tweezers, the same way applied before for the ribbon cables.

Now, you are able to remove the battery from the device. You can then separate the metal frame located at the back of the battery by gently wedging the plastic open tool in between the two parts, and slide it back and forth until the metal frame is removed.
When you separate the battery from the metal frame, be sure to hold it tight on the center by one hand, since the whole battery consists of two smaller batteries joined together.

There are seven screws holding the speakers in place. In the previous steps, you removed four of them, highlighted in red. All that's left to do now is to remove the remaining three screws which are highlighted in orange using philips #00 screwdriver.

The size of all screws are 2mm.

Locate the two speakers cables connected to motherboard. Unplug these cables from their sliders gently by using tweezers.

There are two speakers located on the device at different locations. It is easy to identify them with their black cover. Fortunately, the same replacement procedures applies for both parts. This step includes removing one speaker plug only, since the other cable is identical, you can perform the same procedures as well.

Now, the speakers should be loose and easy to remove. You can gently use your hands to take them off.

From here you can set the speakers aside and replace them with new ones that are functioning properly.

There should be a total of 12 screws removed from the device, 7 of which have already been removed in the process of taking out the battery and the speakers. The remaining screws are highlighted in blue.

Carefully disconnect the cord that connects the on/off button to the motherboard

Peel back the electrical tape holding the connections of the motherboard down to the frame of the device.

The motherboard should be loose now and easy to remove.

JVC DLA-HD1 – How to enter to service mode – LED blinking codes and causes

JVC HD projector – JVC DLA-HD1 – How to enter to service mode – LED blinking codes and causes – Lamp time back up adjustments

SERVICE MENU

The service menu contains items not ordinarily needed by the user. Use these as necessary during service.
How to enter to service mode
(1) No menu shown.
(2) Press the UP button.
(3) Within press the DOWN button.
(4) Within press the RIGHT button.
(5) Within press the LEFT  button.
(6) Within press the [ENTER] button to display the service menu.
NOTE:
When the Service Menu Screen is not displayed, go back to the beginning. It is recommended that you press the buttons a little earlier and steadily.
How to exit service mode
Press the [MENU] button to exit the menu indication.

Basic operation in service mode
Use the following buttons to operate the service menu.
(1) Choose the SETTING MENU with the UP/DOWN button.
(2) When the RIGHT button is pressed after choosing the SETTING MENU, the cursor will shift to the SETTING / ADJUSTMENT ITEMS of each SETTING MENU.
(3) When the cursor is shifted, choose the SETTING / ADJUSTMENT ITEMS with the UP/DOWN button.
(4) Using the LEFT/RIGHT button, change the setup values and adjustment values, respectively.
(5) When the [EXIT] button is pressed, the cursor will return to the SETTING MENU.
(6) When the [MENU] button is pressed, the SERVICE MENU will go out of the screen.
NOTE:
The SERVICE MENU will go out of the screen automatically after 10 seconds if you do not press the [MENU] button.

ADJUSTMENT PROCEDURE
LAMP TIME BACKUP

Note :
Perform this operation during standby mode.
(1) Run HD1_LAMP_Copy.exe and start HD1_LAMP_Copy.
(2) From the COM Port, select the PC COM number being used.
(3) Extract the log using the Receive button and save it as a text file.
(4) After replacing the PROCESSOR PWB, select a file with the extension rmd and click the Transmit button.
(5) The backup Color temperature, Pixel shift and Lamp time will be rewritten.

ADJUSTMENT
(1) Set CL-200 approximately in the center of the image, facing the projector.
(2) Input 50% white in the HDMI terminal from the signal generator.
(3) From the setting menu, set Image Profile to “Natural” and Gamma to “NORMAL”.
(4) Set lens shift position to mechanical center.
(5) From the Image Quality menu, set Contrast, Brightness and Offset to “0”.
(6) From the Service menu, set <Adjust>to <Color temperature>.
(7) Adjust the color temperature such that “Low” and “Medium” have the following settings. Use Blue to adjust color temperature and Green to adjust the deviation. For red, do not adjust. Low: Color temperature 6000 ± 50, Deviation 0 ± 0.05 Medium: Color temperature 6600 ± 50, Deviation 0 ± 0.05.

PIXEL SHIFT
(1) From Service menu, select the adjustment pattern of the color cross-hatch.
(2) From the Service menu, set <Adjust>to <Pixel Shift>.
(3) Adjust [H Pixel Adj.R], [H Pixel Adj.G], [H Pixel Adj.B] to make H direction (Pixel Shift) to become the best point.
(4) Adjust [V Pixel Adj.R], [V Pixel Adj.G], [V Pixel Adj.B] to make V direction (Pixel Shift) to become the best point.

Note :
Perform this operation during standby mode.
ADJUSTMENT
(1) Run Region Writer.exe and start Region Writer.
(2) From the COM Port on the top left of the screen, select the PC COM number being used.
(3) From the US/JAPAN/EU/CHINA buttons in the center of the screen, click the destination button for the set to be written.
(4) Writing is successful if [OK] appears on the top right of the screen.

LED (INDICATOR) WARNING INDICATIONS
Led indication contents
If an abnormality occurs during operation (projection), the content of the problem can be determined from flashing LED indicators. When an LED indicates, operation (projection) automatically stops and the cool-down mode (about 60 seconds) is entered then the stand-by mode.

Error code	LAMP LED	WARNING LED	FLASHING TIME	Warning cause (projector mode)
------	@			Lamp usage time has exceeded 1900 hours.
02	@			Lamp usage time has exceeded 2000 hours.
01	#	@	0.5 SECONDS	No projection caused by the lamp failure.
06	#	@	0.5 SECONDS	Lamp extinction during the projection
15	#	@	0.5 SECONDS	The lamp cover is removed
11		@		SUB CPU malfunctions.
08		@		Internal temperature becomes extraordinarily higher.
09		@		Exhaust temperature at the vent is extraordinarily high or forced high due to high ambient temperature
07		@		Ventilation fan in the unit is stopped. [Fan Lock]
16		@		Error communication in DD CPU
17		@		DD CPU is reset
18		@		DD CPU malfunctions.

 @: Turned on during operation

 #: Alternate Lighting/Extinction during operation [Flickering interval]

RROR LOG (SELF-DIAGONOSIS RECORD AND INDICATION)
By using the special setting and adjustment software, data related to abnormal operation (history) stored in the projector can be load. On the basis of contents "LED (INDICATOR) WARNING INDICATONS" set and lamp use time, internal and external temperature, and other data prior to the previous usage time can be viewed as a table.
HOW TO LOAD THE DATA FROM UNIT
(1) Install the software in a personal computer and connect by RS-232C IN terminal (use cross cable).
(2) Set the projector to stand-by mode.
(3) Start the setting and adjustment software.
(4) Click the [Receive] button and save the TEXT file. Data become the latest data so as to go below.
(5) The first number is error code.
(6) Click the [Reset] button and delete all data stored in projector.

Item	Detected condition
Error code	01:No projection caused by the lamp failure.
	02:Lamp usage time has exceeded 2000 hours.
	03:Error of IIC data
	06:Lamp extinction during the projection
	07:Ventilation fan in the unit is stopped. [Fan Lock]
	08:Internal temperature becomes extraordinarily higher.
	09:Exhaust temperature at the vent is extraordinarily high or forced high due to high ambient temperature
	11:SUB CPU malfunctions.
	15:The lamp cover is removed
	16:Error communication in DD CPU
	17:DD CPU is reset
	18:DD CPU malfunctions.
	20:Lamp did OFF by sleep time function.
	F0:Just after POWER ON
	F1:Once a hour after POWER ON
	F2:POWER OFF(Included Emergency mode)