Apple Magic Mouse - Disassembling procedure

SPECIFICATIONS 

Multi-touch gesture control
Bluetooth wireless connectivity
Lightning port (for charging and pairing)
Internal lithium-ion battery

DISASSEMBLING PROCEDURE 

Slightly warm up the bottom of the mouse

In the previous model, strong adhesive secured the aluminum belly to the mouse.

Apple has mentioned that their mouse has an "optimized foot design." Peel off those feet, the new model hides screws underneath.

After lots of heat and half a dozen prying tools wedged under the casing, the mouse is partially released from the gluey mess beneath.

Finally separate the lower casing from the mouse and get first view of its  midframe.

Popping four plastic clips open lets into the battery chamber.

It turns out these clips are actually part of the rocking/clicking mechanism for the single top shell/button.

Also check that clear acrylic. It's only painted on the underside, leaving the top and sides clear.

With the upper casing lifted up, get a clear view of what makes this mouse so senseational that capacitative array.

The capacitative array makes this mouse a bit of a trackpad hybrid, allowing it to detect touch on its surface, registering gestures made without even moving the mouse.

Finally Screws, Unfortunately, they're holding down a bracket over a ribbon cable which prevents us from separating the mouse bits just yet but hey, that ribbon cable.

seatbelt will make the mouse better withstand drops.

Finally separate from the base of the mouse, the upper casing provides a clearer view of its capacitative touch-sensing array.

A little spring provides some resistance and distributes force when the mouse is clicked, making it seem like the small button on the right occupies the whole width of the mouse.

Broadcom BCM20733 Enhanced Data Rate Bluetooth 3.0 Single-Chip Solution

Unknown 303S0499 probably a proprietary Apple touch controller
NXP 1608A1 Charging IC
Texas Instruments 56AYZ21
ST Microelectronics STM32F103VB 72 MHz 32-bit RISC ARM Cortex-M3

Hiding beneath the logic board, find a teensy switch that makes the mouse click its click.

It held in only by the board above, and is a welcome relief after wading through the rest of this tar pit.

As a common failure part for computer mice, it's nice that Apple used a fairly standard and easilysourced switch although its replacement will require dealing with all of that glue (and soldering in the replacement switch).

Turn our attention to the battery, which sits snug as a bug in its little plastic box, making it annoying to extract.

As it turns out, that's not the only thing holding it down there's a mess of glue to contend with as well. Removing the battery is even less fun than we feared.

The Magic Mouse 2's battery shares a common feature with the Apple TV Remote the Lightning connector is soldered to the battery cable.

This small accessory doesn't pack light that 3.67 V, 7.28 Wh, 1986 mAh li-ion cell holds about 9% more powerful than the one in the iPhone 6s

The Lightning port and battery can be replaced (as a single component), independent of the logic board if you can get the device open.

Replacing a malfunctioning switch requires prying through intense adhesive and soldering.

Excessive use of strong adhesive makes it very difficult to remove the rear panel, hindering access to every internal component.

Spirit treadmill - Spirit XT10 - How to calibrate the treadmill – Engineering mode – General servicing

XT10 Calibration
1. Remove tether cord. Press and hold the START and FAST buttons and put the tether cord back on. Display will go into a test mode then FACTORY SETTING will scroll across the screen. Press ENTER.
2. “POWER ON” will scroll across the screen. Use UP or DOWN buttons to change. (ON) Press ENTER.
3. “UNITS ENGLISH” will scroll across the screen. Use UP or DOWN buttons to change from English to Metric. Press ENTER.
4. “ADJUST WHEEL SIZE” will scroll across the screen. A number will be in the time window. Use UP or DOWN buttons to change. (2.50) Press ENTER.
5. “ADJUST MIN SPEED” will scroll across the screen. A number will be in the time window. Use UP or DOWN buttons to change. (0.5) Press ENTER.
6. “ADJUST MAX SPEED” will scroll across the screen. A number will be in the time window. Use UP or DOWN buttons to change. (12.0) Press ENTER.
7. “ADJUST MAX ELEVATION” will scroll across the screen. A number will be in the time window. Use UP or DOWN buttons to change. (15)
8. Press START. Unit will now auto-calibrate speed then incline. Unit will reset when it completes calibration.
Checking wire harness for continuity
Set your multimeter to read ohms.
Place the test leads at opposite ends of the wire, make sure both leads are on the same wire and are in contact with metal.
If the reading is close to 0 ohms, the wire has continuity (unbroken).
If the reading is very high or there is no reading at all, there is no continuity.
If there is no continuity, the harness needs to be replaced.
Speed sensor adjustment
Take off the motor hood.
The speed sensor is located on the frame, near where the drive belt goes around the front roller.
The sensor should be adjusted to about 1/16th of an inch from the front roller.

Checking treadmill circuit breaker

The circuit breaker is a small, red button between the power cord and the power switch.

Press the button in to reset.

Check roller for magnet

The front roller should have a round magnet and a round counter weight.

Take a screw or something metallic and test each one.

Only one should be magnetic.

Adjust Torque Boost

Using a small screw driver, turn the dial counter clockwise until it stops.

Press the START button on the console.

With someone standing on the walking belt, turn clockwise until the belt begins to move.

Increase the speed and check for smooth belt movement.

Replacing controller

Disconnect power cord from unit.

Remove motor hood.

Remove two Phillips screws holding in the controller.

Disconnect all wires connected to the controller.

Insert new controller, secure with Phillips screws.

Reconnect wires to controller. 

Replacing wire harness

Turn power switch off.

Unplug harness from console and controller.

Tie the end of the new harness to the old harness (with a zip-tie or spare wire).

As you pull the old harness out of the upright, you will pull the new harness in.

Connect to board and console, & turn power back on.

Replacing drive motor

Turn power switch off.

Disconnect red and black motor wires from controller.

Loosen tension bolt and remove four motor bolts.

Take off drive belt.
Insert new motor into place.
Put drive belt on.
Put in four motor bolts. Do not tighten them all the way down.
Tighten the tension bolt until you only have about an inch of play in the drive belt.
Tighten down the four motor bolts.

Plug the motor wires into the controller.

Replacing incline motor
Turn power switch off.
If possible, fold up unit.
Turn treadmill onto its side.
Disconnect motor wires from controller.
Remove bolt from incline tube.
Remove bolt from top of incline motor and take out motor.
Insert new motor and put in bolt on the top.
Reconnect motor wires to controller.
Turn on unit. The new motor should turn until it is at “zero”.
Insert bolt into incline tube.

XT 10 Engineering mode

1. Remove the tether cord.

2. Press and hold the START, ENTER, and STOP buttons and replaced the tether cord.

3. The display will say ENGINEERING MODE. Press ENTER.

4. Press the UP and DOWN buttons to scroll through the following sub menus:

Calibration

Factory Settings

Security

Functions

Display Test

Key Test

5. Press ENTER to access the desired program.

SONY STR-DN1010 – Updating the firmware - How to access test mode – How to initialize the AVR

TEST MODE
TUNER AM STEP CHANGE MODE
Either the 9 kHz step or 10 kHz step can be selected for the AM channel step.
Procedure:
1. Press the [POWER] button to turn on the main power.
2. Press the [INPUT SELECTOR - ]/[INPUT SELECTOR +] buttons to select the “AM TUNER”.
3. Press the [POWER] button to turn off the main power.
4. While pressing the [DISPLAY] button, press the [POWER] button to turn on the main power.
5. Either the message “AM 9k Step” or “AM10k Step” appears, select the desired step.
6. After a few second, “AM 531 kHz” or “AM 530 kHz” appears, select the desire step.
SOUND FIELD CLEAR MODE
The preset sound field is cleared when this mode is activated.
Procedure:
1. While pressing the [MUSIC] button, press the [POWER] button to turn on the main power.
2. The message “S.F. CLEAR” appears and initialization is performed.
INITIALIZE MODE
All preset contents are cleared when this mode is activated.
(a) SHIPMENT MODE
Procedure:
1. While pressing the [DISPLAY] and [A.F.D.] buttons, press the [POWER] button to turn on the main power.
2. The message “CLEARING” appears and the memories are reset to the default values.
3. When done, the message “CLEARED !” appears, the set will power off.
(b) ALL CLEAR INITIALIZE
Procedure:
1. While pressing the [SPEAKERS] and [MUTING] buttons, press the [POWER] button to turn on the main power.
2. The message “CLEARING” appears and the memories are reset to the default values.
3. When done, the message “BD” appears after “CLEARED !”.
(c) USER INITIALIZE
Procedure:
1. Hold the [POWER] for 5 seconds.
2. The message “CLEARING” appears on the display.
3. After a few seconds, “CLEARED !” appears.
FLUORESCENT INDICATOR TUBE DISPLAY TEST
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 pressing the [MUTING] and [DISPLAY] buttons, press the [POWER] button to turn on the main power.
1. ALL segments light on.
2. Press the [DISPLAY] control, confirm display.
3. Again Press the [DISPLAY] control, confirm display.
4. Press the [DISPLAY] control, all segments light off.
SWAP MODE
The signal will be swap to all channel so that all speaker will have sound output.
Procedure:
1. While pressing the [SPEAKERS] and [2CH/A.DIRECT] buttons, press the [POWER] button to turn on the main power.
2. The message “SWAP MODE” appears (No change while displayed).
COMMAND MODE CHANGE MODE
The command mode of the remote-commander which this set receives can be changed.
Procedure:
1. While pressing the [MUTING] and [DIMMER] buttons, press the [POWER] button to turn on the main power.
2. Either the message “C. MODE AV1” or “C. MODE AV2” appears. Select the desired mode.
PROTECTOR OFF MODE
This mode switching on/off the protector to investigate the cause of the protector.
Procedure:
1. While pressing the [INPUT MODE] and [A.F.D.] buttons, press the [POWER] button to turn on the main power.
2. “PROT OFF” appears and switch off the set..
HISTORY MODE
The state that the set is used is memorized.
Procedure:
1. While pressing the [INPUT MODE] and [2CH/A.DIRECT] buttons, press the [POWER] button to turn on the power and “HISTORY” is displayed.
2. Each time the [UP]/[DOWN] buttons on the remote commander is pressed, the item is switched.

SOFTWARE VERSION DISPLAY MODE

The software version is displayed.
Procedure:
1. While pressing the [INPUT MODE] and [MUSIC] buttons, press the [POWER] button to turn on the main power.
2. The message “N1 ** M-.--” appears.
**: Destination
Each time the [DISPLAY] button is pressed, “F.Ver -.--”, “H.Ver -.--” and “S.Ver -.--NII” this order, and returns to the “N1 ** M-.--” displayed.

SPDIF UPDATE MODE (FIRMWARE UPDATE)Plays the CD that contains u-com/DSP data with CD/DVD player.
Update u-com/DSP etc. firmware from SPDIF input.

Procedure:
Normal case
1. While pressing [DIMMER] button, press the [POWER] button to turn on the main power.
2. The messages “UPDATE” and “PLAY DISC” are displayed alternately every one second.
3. Connect CD player to TV OPTICAL IN jack (IC2004 on the DIGITAL board), and play update CD.
Update is started when DSP detect update signal. The message “UPDATING” is displayed blinks every one second.
4. While main u-com is being updated, fluorescent indicator tube is blacked out.
5. When update data error is detected or disc is not matched with target model, error messages “DISC ERROR” and “PLAY DISC” are displayed to restart playing valid CD.
When flash writing error is happened, error messages “UPDATE ERR” and “PLAY DISC” are displayed to restart playing CD.
6. When all update is finished, set is reboot automatically. After reboot, complete message “COMPLETE” is displayed (displayed continuously until any user operation).
Procedure:
After update is abnormal exit, and set is power on again
1. Enter update mode automatically after power on.
2. The messages “UPDATE” and “PLAY DISC” are displayed alternately every one second.
From this step, all user operation is prohibited. Power off is also prohibited.
If main u-com was failed to update, nothing is displayed.
3. Connect CD player to TV OPTICAL IN jack (IC2004 on the DIGITAL board), and play update CD.
Update is started when DSP detect update signal. From this, same as normal case.

SPDIF UPDATE CHECK
Function that checks hardware error for SPDIF update. This test takes about 15 seconds.
Procedure:
1. While pressing [DIMMER] and [2CH/A.DIRECT] buttons, press the [POWER] button to turn on the main power.
2. The message “TESTING” is displayed and LED (MULTI CHANNEL DECODING indicator) is blinking.
3. When abnormality is not found, the message disappears and LED is light up.
4. Communication error between main microcomputer and DSP, the messages “UART” and “ERROR” are displayed and LED is blinking in fast speed.
Communication error between HDMI microcomputer and DSP, the messages “HDMI” and “ERROR” are displayed and LED is blinking in fast speed.
Communication error between Faraudja and DSP, the messages “VIDEO” and “ERROR” are displayed and LED is blinking in fast speed.
Unknown error, the messages “UNKNOWN” and “ERROR” are displayed and LED is blinking in fast speed.
5. To release from this mode, AC power cord pull out.

Epson EB1985WU – EB1975 –EB1980WU – EB1970W – Air filter maintenance – How to replace the lamp – How to reset the lamp – Projector repair and service

Cleaning the Air Filter and Vents
Clean the projector's air filter or vents if they get dusty, or if you see a message telling you to clean them.
a. Turn off the projector and unplug the power cord.
b. Gently remove the dust using a small vacuum designed for computers or a very soft brush (such as a paintbrush).
c. If dust is difficult to remove or the air filter is damaged, replace the air filter.
Replacing the Air Filter
You need to replace the air filter in the following situations:
# After cleaning the air filter, you see a message telling you to clean or replace it.
# The air filter is torn or damaged.
You can replace the air filter while the projector is mounted to the ceiling or placed on a table.
a. Turn off the projector and unplug the power cord.
b. Slide the air filter cover latch and open the air filter cover
c. Pull the air filter out of the projector.
d. Place the new air filter in the projector as shown and push gently until it clicks into place.
e. Close the air filter cover.
Projector Lamp
The projector monitors the number of hours the lamp is used and displays this information in the projector's menu system.
Replace the lamp as soon as possible when the following occurs:
# The projected image gets darker or quality declines.
# A message appears when you turn on the projector telling you to replace the lamp. (message remains displayed for 30 seconds)
The projector's lamp light is flashing orange.
Replacing the Lamp
You can also replace the lamp while the projector is mounted to the ceiling.

Let the lamp fully cool before replacing it to avoid injury.

# Never disassemble or remodel the lamp. If a modified or disassembled lamp is installed in the projector, it could cause a fire, electric shock, or other damage or injury.

a. Turn off the projector and unplug the power cord.

b. Allow the projector lamp to cool down for at least one hour.When replacing the lamp, there is a possibility that the lamp may be broken. If replacing the lamp of a projector which has been installed on the ceiling, you should always assume that the lamp is cracked, and you should stand to the side of the lamp cover, not underneath it. Remove the lamp cover gently. Be careful when removing the lamp cover as shards of glass may fall out and could cause an injury. If any shards of glass get into your eyes or mouth, contact your local physician immediately.

c. Use the screwdriver included with the replacement lamp to loosen the screw securing the lamp cover.

d. Slide the lamp cover out and lift it off.

e. Loosen the screws securing the lamp to the projector. The screws do not come all the way out.

f. Lift up the lamp handle and carefully pull the lamp out of the projector.

g. Gently insert the new lamp into the projector. If it does not fit easily, make sure it is facing the right way. Press the handle down.

h. Push in the lamp firmly and tighten the screws to secure it.

i. Replace the lamp cover and tighten the screw to secure it.

Reset the lamp timer to zero to monitor the new lamp's usage.

Resetting the Lamp Timer

a. Turn on the projector.

b. Press the [Menu] button on the control panel or remote control.

c. Select the Reset menu and press [Enter].

d. Select Reset Lamp Hours and press [Enter].

e. Select Yes and press [Enter].

f. Press [Menu] or [Esc] to exit the menus.

Harman kardon SUB-TS11 – Test procedure – Class D power amplifier circuit

Test Set Up and Procedure
Equipment needed:
# Function/signal generator/sweep generator
# Integrated Amplifier
# Multimeter
# Speaker cables
Initial Control Settings:
# Power Switch OFF
# Filter OFF
# Level MIN (Full CCW)
# Phase, Auto/On switches do not matter
General Unit Function (UUT = Unit Under Test)
1) From the signal generator, connect one line level (RCA) cable to the Subwoofer Line Level Input jacks L/R on the UUT. Use a Y-cable from a mono source if necessary to connect to both inputs. Do not connect to the single, purple SUB input.
2) Turn on generator; adjust to 60mV, 50 Hz.
3) Plug in UUT; turn the power switch ON. Turn LEVEL control full clockwise (MAX)
4) LED should turn from Amber to Blue (on top of UUT); immediate and vigorous bass response should be heard and felt from port tube opening.Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofers and test.
5) Turn off generator, turn LEVEL control of UUT full counterclockwise (MIN), and disconnect RCA cable.
6) Connect one pair of speaker cables to Speaker Level input terminal (IN) on UUT. The others end of the Cables should be connected to an integrated amplifier fed by the signal generator.
7) Turn on generator and adjust so that input level at the amplifier should be 1.2V, 50 Hz.
8) Turn LEVEL control of UUT full clockwise (MAX).
9) LED should turn from Amber to Blue; immediate and vigorous bass response should be heard and felt from the port tube opening. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofers and test.

 Sweep Function test 

1) Connect one pair of speaker cables to Speaker Level input terminal (IN) on UUT. The others end of the Cables should be connected to an integrated amplifier fed by the signal generator.

2) Turn on generator and adjust so that input level at the amplifier should 1.2V, 50 Hz.  

3) Plug in UUT; turn the power switch ON.Turn LEVEL control of UUT full clockwise.

4) LED should turn from Amber to Blue; immediate and vigorous bass response should be heard and felt from the port tube opening.
5) Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofers and test.
Driver Function test
1) Remove woofer from cabinet; detach + and - wire clips.
2) Check DC resistance of woofer; it should be 2.8 ohms +/-10%
3) Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
4) Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.

Power amplifier uses Complimentary pair MOSFET IRF640 and IRF9640

IRF640 - Power MOSFET

FEATURES
# Dynamic dV/dt rating
# Repetitive avalanche rated

# N-Channel
# Fast switching
# Ease of paralleling
# Simple drive requirements

Specification
VDS (V)	200
RDS(on) (Ohms)	VGS = 10 V 0.18 Ohm
Qg (Max.) (nC)	70
Qgs (nC)	13
Qgd (nC)	39
Configuration	Single

IRF9640 - Power MOSFET

FEATURES
# Dynamic dV/dt rating
# Repetitive avalanche rated
# P-channel
# Fast switching
# Ease of paralleling
# Simple drive requirements

Specification
VDS (V)	-200
RDS(on) (Ohms)	VGS = -10 V 0.50 Ohm
Qg max. (nC)	44
Qgs (nC)	7.1
Qgd (nC)	27
Configuration	Single

Matrix fines treadmill - Matrix T5x-07 – Auto calibration procedure - How to access manager mode – How to access service mode – Error code and troubleshooting

Engineering mode
1. To enter Engineering Mode, hold the INCLINE DOWN and SPEED DOWN keys for three seconds until Manager Mode appears on the middle LED display.
2. Press any UP arrow key and Engineering Mode will appear on the display.
3. Press ENTER once Engineering Mode is displayed.
4. To scroll between programs in the Engineering Mode, press any UP or DOWN arrow key.
5. Press ENTER to modify the program settings once displayed.
6. Press any UP or DOWN arrow key to change value.
7. Once program setting is correct, press ENTER to save.
8. Press the EMERGENCY STOP to exit Engineering Mode
Service mode
1. To enter Service Mode, hold the INCLINE DOWN and SPEED DOWN keys for three seconds until Manager Mode appears on the middle LED display.
2. Press any DOWN arrow key and Service Mode will appear on the display.
3. Press ENTER once Service Mode is displayed.
4. To scroll between programs in the Service Mode, press any UP or DOWN arrow key.
5. Press ENTER to modify the program settings once displayed.
6. Press any UP or DOWN arrow key to see value.
7. Press the EMERGENCY STOP to exit Service Mode
Auto Calibration Procedure:
1) Press and hold the INCLINE DOWN and SPEED DOWN keys for three seconds until Manager Mode appears on the middle LED display.
2) Press any UP arrow key and Engineering Mode will appear on the display.
3) Press ENTER once Engineering Mode is displayed.
4) Scroll between programs in the Engineering Mode using any UP or DOWN arrow key until Auto Calibration appears on the middle LED display.
5) Press ENTER once Auto Calibration is displayed. You should not be standing on the running belt.
6) After completion, the display will state whether the Auto Calibration passed or failed.
Manager mode
1) To enter Manager Mode, press & hold INCLINE DOWN and SPEED DOWN at the same time for 3-5 seconds until Manager Mode appears on the display.
2) To enter the Manager Mode, press ENTER once Manager Mode appears on the display.
3) To scroll between programs in the Manager Mode, press any UP or DOWN arrow key.
4) Press ENTER to modify the program settings once displayed.
5) Press any UP or DOWN arrow key to change value.
6) Once program setting is correct, press ENTER to save.
7) Press the EMERGENCY STOP to exit Manager Mode.

Error messages 0140 / 01a0 / 01a2
1) symptom:
a. 0140 - Incline motor operation failed.
b. 01A0 - Incline motor disconnected.
c. 01A2 - Incline motor is detected in the reverse of the position indicated by the potentiometer.
2) Solution
a. Check the connection of the incline motor cable at the MCB.
b. Run auto calibration
c. If auto calibration fails, re-enter Engineering Mode and scroll until Elevation Minimum is displayed, then press ENTER.
- Check the MCB LEDs. If  LED (DOWN )has no light, check the console cable connections at the console and MCB.
Replace the console or cable as needed. If LED DOWN has a light, replace the incline motor.
d. If the incline motor does not resolve the issue, replace the MCB.

Error message 01a3
1) symptom:
a. Motor is disconnected.
2) Solution:
a. Check the connection of the motor cable at the MCB
b. Check to see if the MCB LED DSP1 (MCU) is lit.
c. If LED DSP1 is blinking, the motor should be replaced.
d. If LED DSP1 is a solid light, replace the motor.
e. If LED DSP1 is not lit, replace the MCB

Error message 01a8 / 02b6 / 02b7 / 02b8
1) symptom:
a. 01AB - Motor over current.
b. 02B6 - Speed up is overcurrent.
c. 02B7 - Speed down is overcurrent.
d. 02B8 - Running status is overcurrent.
2) Solution:
a. Check the condition of the running deck and belt. Replace the belt and flip or replace the running deck as needed.
b. Replace the MCB.

Error message 02b9 / 02ba / 02bd
1) symptom:
a. 02B9 - The inner memory IC data write error.
b. 02BA - The inner memory IC data read error.
c. 02BD - Inverter hardware interrupt error.
2) Solution:
a. Check LED DSP1 (MCU) on the MCB.
b. If this LED is blinking, replace the console.
c. If this LED is a constant light, replace the MCB.
d. If this LED is not lit at all, check the power to the MCB.

Magnavox 50MF412B/F7 – Service mode – Service mode adjustments – Power supply schematic – Using IC – UCC28060

Service mode:
1. Turn the power on.
2. Press [MENU] button to display Setup menu.
3. Select “Features”.
4. Select “Software Upgrade”.
5. Select “Current Software Info”.
6. Press [0], [4], [2], [5], [7], [4] and [INFO] buttons on the remote control unit in this order. 

Purity Check Mode
This mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.
1. Enter the service mode.
2. Each time the [7] button on the remote control the display changes.

3. To cancel or to exit from the Purity Check Mode, press [CH RETURN] or [PREV CH] button.

White Balance Adjustment
Purpose: To mix red and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.

1. Operate the unit for more than 60 minutes.
2. Enter the service mode.
3. Press [VOLUME DOWN] button three times on the remote control unit to select “Drive setting” mode. “Drive” appears in the screen.
4. Set the color analyzer at the CHROMA mode and zero point calibration. Bring the optical receptor pointing at the center of the LCD-Panel.

Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
5. Press [3] button to select the “HDB” for High Drive Blue adjustment. (“HDB” appears in the screen.)

6. Press [MENU] button. The internal Raster signal appears in the screen.

7. Press [CHANNEL UP/DOWN] buttons to adjust the color temperature becomes 12000 degree K (x= 0.272 / y= 0.278 +/- 0.002).
8. Press [1] button to select the “HDR” for High Drive Red adjustment (“HDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.
9. If necessary, adjust the “HDB” or “HDR” again.
10. Press [6] button to select the “LDB” for Low Drive Blue adjustment (“LDB” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

11. Press [4] button to select the “LDR” for Low Drive Red adjustment (“LDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.
12. If necessary, adjust the “LDB” or “LDR” again.
13. Press [VOLUME DOWN] button to shift to the “Debugging Message” mode. If there is no message under “[WB]” section, this adjustment completes.
If “Drive settings are NG. Retry.” is displayed, repeat above steps from 5. to 12. 

Then check “Debugging Message” again. If “Drive settings are NG. Retry.” is displayed, replace the LCD Panel or Digital Main CBA.
14. To cancel or to exit from the White Balance Adjustment, press [CH RETURN] or [PREV CH] button.

INITIALIZE THE LCD TV

NOTE: Disconnect any device from the USB Port before you conduct on this procedure.

1. Turn the power on.

2. Enter the service mode.

- To cancel the service mode, press [POWER] button on the remote control unit.

3. Press [BACK] button to enter the Panel Key Confirmation Menu.

4. Press any button on the touch sensor panel.

5. Press [INFO] button to proceed with the self check mode.

6. Make sure to confirm the “INITIALIZED FINISH” appears in the green screen.

7. Unplug the AC Cord and plug it back on again.

Samsung plasma TV – Plasma TV Power supply Troubleshooting tips – Plasma television repair and service

SMPS
The SMPS power supply will vary slightly depending on the screen size. Both however will function identically.
Power supply removal requires the tech to remove either 6 or 8 screws be removed depending on the model and size of screen. After replacement of the SMPS make sure the voltages are adjusted according to the label posted on the panel.
The power supply provides switched and unswitched voltages for operation. The unswitched voltages are present as long as the unit is plugged into the wall. The +5VDC supply operates the main CPU on the digital board. The +33VDC supply is used by the tuner.
The other voltages are used by the panel drive circuits creating the Va,Vs,Vset and Ve voltages.
The Power Factor Control (PFC) circuit is used to save energy. Taking advantage of the capacitive effect of the pixel elements allows the power supply to operate at a reduced duty cycle. Using a large inductor and the capacitive effect of the panel allows energy to be stored and accessed as needed.
A separate transformer supplies the +5VDC Stand-By B+ to the Digital board. This voltage powers the Microprocessor (IC201) and enables the Key Matrix and the Remote IR Sensor. This turns on the relay activating the rest of the Power Supply PCB. If this supply is missing or low the unit will not turn on. If this signal is not present check the supply voltage for the micro.
Power Supply Troubleshooting
If the Ve voltage is low or missing disconnect the power supply cable from the X board. If the Ve voltage rises the X board is probably shorted. If the voltage stays low the SMPS board needs to be replaced. If the Vs voltage is low or missing it can be caused by a defective X or Y board. Check both boards for short circuits before replacing the SMPS board. If the Vs voltage is too high an effect called diffusion may occur. Diffusion is when the initialize voltage is too high. Excessive voltage causes unwanted pixel firing creating intermittent sub-pixel flashes. Power on-off cycling can be caused by a shorted component on the Logic board loading down the standby 5V.
Power Supply Failure Examples
One possible symptom is defects in the video such as herringbone noise
# Other symptoms would be similar to X or Y board failures as the SMPS board provides the power to these boards
# Before replacing an X or Y board be sure the Vs, Vsc and VE voltages are being provided by the SMPS board.
If the Ve voltage is low or missing disconnect the power supply cable from the X board. If the Ve voltage rises the X board is probably shorted. If the voltage stays low the SMPS board needs to be replaced. If the Vs voltage is low or missing it can be caused by a defective X or Y board. Check both boards for short circuits before replacing the SMPS board. If the Vs voltage is too high an effect called diffusion may occur. Diffusion is when the initialize voltage is too high. Excessive voltage causes unwanted pixel firing creating intermittent sub-pixel flashes. Power on-off cycling can be caused by a shorted component on the Logic board loading down the standby 5V
Power Supply Adjustments
Each plasma panel has a unique voltage setting required to display a picture properly and maintain long life. Incorrect adjustment of the power supply can create picture errors. Whenever a power supply board is replaced the new board must be adjusted to match the panel values shown on the sticker.
If a power supply board is replaced it is imperative that the new power supply be adjusted to match the existing panel settings. Incorrect adjustment can cause the picture to be too dark or too bright. Extreme maladjustment can greatly reduce panel life.

Locations of the test points and adjustments on a typical SMPS power supply. These adjustments must be performed when the SMPS or the panel is replaced.

Protection Circuits:  Over Voltage Protection

The Power Supply PCB has an Over Voltage Protection circuit as well as a regulator circuit. It is designed so that when an Over Voltage condition occurs in any part of the power supply it does not affect another output stage. The following table shows the Over Voltage specifications. The unit must be unplugged to reset this error.

Intermittent shutdown may be caused by an over-voltage condition.

Item	Over Voltage Point
D3.3VDC	4.7VDC
D6VDC	8.2VDC
VA (typically 75VDC)	94VDC

Over Current Protection
If a short circuit occurs on either the VS, VA, 12V, 6V or 3.3V lines, the SMPS stops operating, but should not fail. When the short circuit is removed from the source line, the Power Supply will operate normally again.

Power Supply Diffusion

The diffusion problem can be seen using the sweeping test pattern located in the customer menu under the burn protection selection. Diffusion is caused by a power supply that is not properly matched to the panel.

Over diffusion is the most common symptom, this is where the SMPS is providing to much Vs voltage for the panel.

SMPS adjustments to eliminate the diffusion problem.

Allow the unit to warm up 15 to 20 minutes to stabilize the SMPS Operation
# Access the Customer Setup Menu, then Screen burn protection, then Signal Pattern
# Adjust the Vs voltage while monitoring the screen. Adjust the Vs voltage up or down, if the diffusion error is not diminished as the voltage change approaches 10 volts the panel needs to be replaced
# Do not adjust the Vs voltage more than 15VDC from the value printed on the panel label.

Samsung plasma TV – Logic board troubleshooting tips

Logic Board Troubleshooting
A defective logic board will often display the video signal but with the wrong color or a smeared picture. If you can recognize the video pattern but there are errors in color , smearing or jittering, suspect that the Logic board is defective.
The logic board creates the timing pulses to create the X, Y and Address waveforms. Additionally the logic board is involved in controlling the power on operation. Logic board defects will usually cause the screen to show a full image but with some type of error. The error can be inverted video, jitter or improper color or luminance. If the logic board is defective all of the pixels will be illuminated but the video will be incorrect. The error may be sectionalized or across the entire panel. Another common error is related to a loss connection on the LVDS cable. It is possible to isolate the Logic board from the Main board by accessing the test pattern on the logic board.
Isolating the Logic Board
1. Access the service menu by pressing Mute + 1 + 8 + 2 + Power with the power off.
2. Access the PDP option sub menu item.
3. Access the Pattern select submenu item.
4. Scroll through the different patterns. These test patterns are generated on the
Logic Board. If these patterns are displayed properly, the problem is before the logic board. This can be problem with the Logic-Main Board LVDS interconnect cable or a problem with the Main board. If the patterns are not displayed properly, the problem is probably caused by a defective Logic Board. Additionally a dead set may also be caused by the Logic board not sending out the relay on command. This can also be a set that cycles on or off quickly at startup.
To troubleshoot video problems or to make sure every board after the main board is working properly, the internal test patterns can be accessed in the logic board then move to the main board test patterns. Even the customer menu's can be used as a test pattern.
Logic Board Forced Operation
Step 1- With the Main PCB removed, short pins 1 & 5 on the 24P ribbon cable to the SMPS to turn the panel on. This will turn on the secondary voltages of the SMPS. Shorting the POWER ON connection to ground is the same as the power on from the power switch.
Step 2 - Carefully short pins 5 & 6 of the 6 terminal test point on the Logic PCB together. When the panel is powered on, the PDP will automatically “play” the internal test patterns stored on the Logic board that would normally be accessed only through the service menu. This will force the logic board into a loop where the internal test patterns will be displayed in sequence.
Step 3 - After the proper pins are shorted, apply power to the AC input to the panel. The TV will power up by itself and if all is well with the logic, X, Y buffers and address boards, the panel will “play” the test pattern loop. If everything looks normal the possible problem is the main board which is the only thing left not in the circuit.
The patterns that will be displayed from the logic PCB are located after the LVDS cable. If the patterns look normal, the SMPS, logic, X, Y, buffers and panel are all working properly. Use this method in cases where the video is so distorted that the menus can not be seen to access the test patterns using the service mode.
Logic Board Failure Examples
Logic PCB failures The test patterns located on the Logic board are being displayed along with the incoming video.
If the relay cycles repeatedly or will not close, verify the Standby +5VDC supply is not being pulled down by a defective Logic Board

Horizon fitness treadmill – Horizon Omega – Horizon Pagaron – Troubleshooting

TROUBLESHOOTING: No display on console
Possible causes:
1. Breaker is damaged.
2. ON/OFF switch is damaged.
3. Transformer (2pin&3pin) is damaged.
4. MCB is damaged.
5. Console cable is damaged.
6. PCB is damaged
Solution
1. Verify if LED
115vAC(AC) is lit. If this LED is lit, YES: Next step
NO: Verify the following
Inspect the circuit breaker to see if it has tripped off.
(If it is tripped off--like diagram B reset the breaker. And check which part is short-circuited. Then replace the short-circuited part.)
2. The switch is turned to the "ON" position.
(If the switch light isn't lit, replace the switch.)
Verify wire connection AC1 & AC2 on the MCB.
Verify the ON/OFF switch, breaker & socket wires are connected.
3. Transformer is damaged, replace it with a new one.
4. MCB is damaged, replace MCB.
Verify if fuse is broken. If it is, replace fuse.
5. Replace console cable.
Verify if the 5th pin (yellow) and 8th pin (white) of console cable is more than 10 voltage.
6. Replace PCB.
All or some of the keys on console will not work
Possible causes:
1. Keypad connecting plug is not fit-in properly.
2. Keypad is damaged.
3. PCB is damaged.
Solution
1. Disconnect the keypad and replace the keypad, and check again.
2. Replace the keypad.
3. Replace the PCB.
Heart-Rate-Control function does not work
Possible causes:
1. Hand pulse sensor set is damaged.
2. Heart-rate-control board is damaged.
3. PCB is damaged
Solution
1. Replace hand pulse sensor set with a new one.
2. Replace the heart-rate-control board with a new one.
3. PCB is damaged. Replace the PCB.
Error-message "E1" on console
E1: motor doesn’t work
Possible cause:
1. Motor hesitates to move.
2. Console cable has not been connected well or is damaged.
3. Sensor cable has not been connected well or is damaged.
4. Magnet of the front roller has fallen down.
5. Damaged PCB
6. Damaged MCB
7. Sensor is out of alignment
Solution
1. Adjust the “SPD” button on MCB until the motor start.
2. Check the console control cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
3. Check the Sensor cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
4. Check the magnet of front roller has been fallen down or not.
If it has fallen down, re-install it.
5. Replace the PCB.
6. Replace the MCB.
6. Re-install the sensor.
Error-message "E2" on console
E2: max velocity is too low
Possible cause:
1. Console cable has not been connected well or is damaged.
2. Sensor cable has not been connected well or is damaged.
3. Magnet of the front roller has fallen down.
4. Damaged PCB
5. Damaged MCB
6. Sensor is out of alignment
7. City power is too low.
Solution
1. Check the console control cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
2. Check the Sensor cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
3. Check the magnet of front roller has been fallen down or not.
If it has fallen down, re-install it.
4. Replace the PCB.
5. Replace the MCB.
6. Re-install the sensor.
7. Check the power voltage by using voltage-meter to see if it is within 120V+-15% or 230V+-15%.
If the power voltage isn't within the range, look for a qualified electrician for help

Treadmill will not start

Possible causes:

1. Max SPD button has not been adjusted properly.

2. Console cable or PCB is damaged.

3. MCB is damaged.

4. Transformer (7-pin) is damaged.

5. Motor is damaged.

Solution

Open motor cover, verify wire connection M+ and M- (motor wire) and transformer (7-pin) on the MCB then plug in the power cord and turn on the power switch. Then press “POWER, START, FAST“ buttons.

1. Adjust the “SPD” until the motor start to run.

2. Verify the LED indicator of LED4 is lit. If that LED4 is not lit, replace console cable or PCB.

3. Replace MCB

4. Replace transformer (7-pin).

5. Replace Motor.

Treadmill will stop by itself

Possible cause:

1. Poor interconnection.

2. ESD.

3. PCB (especially true when stop in the scanning mode).

4. Low magnetism of the safety switch.

5. Bad motor

Solution

1. Verify the interconnection between wires.

2. Advise JMI.

3. Replace the PCB.

4. Replace the safety switch.

5. Replace the motor

Running speed is not stable

Possible causes:

1. AC power voltage is too low.

2. Tension of drive belt or running belt is too loose. Poor adjustment of MCB.

3. MCB is damaged.

4. Motor is damaged.

5. Poor lubrication between the deck and the belt

Solution

1.Check the power voltage by using voltage-meter to see if it is within 120V+-15% or 230V+-15%.

If the power voltage isn't within the range, look for a qualified electrician for help.

2.Open the motor cover, if the belt has stretched and is slipping across the rollers when running.

Adjust the belt tension.

3.Remove the motor cover and run the machine at low speed, then adjust the IR COMP and MAX SPD on MCB.

If it hasn't been improved, replace new MCB.

4.Replace new motor.

5.Relubrication.

Treadmill will incline up or down by itself

Passable causes:

1. The console cable is damaged.

2. MCB is damaged.

3. PCB is damaged.

4. Incline motor is damaged

Solution

1. Use a new console cable to connect PCB to MCB. Then turn power on, press "UP" and "DOWN" key to see if the incline motor will be OK. (If the treadmill still works by itself go to next step)

2. MCB is damaged.

2.1 Check if relay parts (REL1, REL2) failed with a multimeter to measure the resistance of REL1 and REL2.

Replace REL1 & REL2 if either failed.

2.2 Replace MCB.

3. OR: Replace PCB.

OR: Replace incline motor.

Noises generated under motor cover

Possible causes:
1. The running belt tension is adjusted too tight.
2. The bearing of front roller is not installed correctly.
3. Dirty grooves of drive belt.
4. The motor is damaged.
Solution
1. Adjust the belt tension so that the belt does not start slipping and then check if the noise has disappeared. Let the treadmill run, without using it, for at least 5 days because sometimes the bearing will settle and become quiet then check if the noise has disappeared.
2.Replace the front roller with a new one to see if the noise disappear.
3.Remove drive-belt and check the grooves in belt for dirt or dust and clean if necessary. Clean also the motor pulley and the roller pulley groove and check if the noise has disappeared.
4.The motor bearing is damaged.
Replace the motor.