Friday, January 13, 2017

LG washing machine – LG WM2455H - WM2301H – Test mode and Error codes troubles shooting

The washer must be empty and the controls must be in the off state.
1. Press the WASH/RINSE and SPIN SPEED buttons simultaneously.
2. Press the Power button, while the above condition. Then buzzer will sound twice.
3. Press the Start/Pause button repeatedly to cycle through the test modes.
Number of times the
Start/Pause button is pressed
Check Point
Display Status
1 time
Tumble clockwise.
rpm (42>50)
2 times
Low speed Spin.
rpm (55>65)
3 times
High speed Spin.
rpm (105>115)
4 times
Inlet valve for prewash turns on.
Water level frequency (225>265)
5 times
Inlet valve for main wash turns on.
Water level frequency (225>265)
6 times
Inlet valve for hot water turns on.
Water level frequency (225>265)
7 times
Inlet valve for bleach turns on.
Water level frequency (225>265)
8 times
Tumble counterclockwise.
rpm (42>50)
9 times
Water Temperature (Thermistor)
Water temperature [Degree C]
10 times
Drain pump turns on.
Water level frequency (225>265)
11 times
Press the CUSTOM and PRE-WASH buttons simultaneously
The digits indicate the water level frequency.
For example, if the display indicate 41, the water level frequency is 20+(41X0.1) = 24.1 kHz.
If you press the START/PAUSE button when an error is displayed, any error except PE will disappear and the machine will go into the pause status.
In case of PE,TE ,DE if the error is not resolved within 20 seconds, or the in case of other errors, if the error is not resolved within 4 minutes, power will be turned off automatically and the error code will blink. But in the case of FE power will not be turned off.

Correct water level (246) is not reached within 8 minutes
after water is supplied or it does not reach the preset water
level within 25 minutes.
The load is too small.
The appliance is tilted.
Laundry is gathered to one side.
Non distributable things are put into the drum.
Not fully drained within 10 minutes.
Water is overflowing (water level frequency is over 213).
If is displayed, the drain pump will operate to drain
the water automatically.

The SENSOR SWITCH ASSEMBLY is out of order.
Door not all the way closed.
Loose electrical connections at Door switch and PWB Assembly.
The DOOR SWITCH ASSEMBLY is out of order.
The THERMISTOR is out order.
The connector (3-pin, male, white) in the MOTOR HARNESS
is not connected to the connector (3-pin, female, white) of STATOR ASSEMBLY.
The electric contact between the connectors (3-pin, male,
white) in the MOTOR HARNESS and 4-pin, female, white connector in the MAIN PWB ASSEMBLY is bad or unstable.
and MAIN PWB ASSEMBLY is cut (open circuited).
The hall sensor is out of order/defective.
EEPROM is out of order.
Displayed only when the START/PAUSE button is first
pressed in the Load Test Mode.
After the power supply is stopped while washing machine is
working, the power is supplied rapidly

Precor Fitness equipment – Error code and troubleshooting

Error 35, 36
Excessive AC Input Current
Applies to
TRM 800.v2
Issue Symptoms
Error 35: This error monitors the instantaneous input current to the treadmill. If the input current should spike above 65 amps, an Error 35 will be displayed. The most likely cause of this error will be a catastrophic failure internally to the MC.
Error 36: This error monitors the average input current to the treadmill. If the MC detects current in excess of 20 amps for a sustained period an error 36 is displayed and the treadmill shuts down. The most likely cause of this is a worn deck and belt. It is possible that this error could be caused by a combination of a worn deck/belt and the DB Resistor being stuck ON. Low line voltage can cause error 36; however this usually causes an error 16, so check for that error in the log. If the error 36 occurs when the treadmill is fairly new, and the facility has not had other treadmills plugged in previously, it is possible that the wiring to the outlet is not of sufficient gauge to handle the current required.
Troubleshooting steps Error 35
If error 35 is persistent, replace the MC.
Troubleshooting steps Error 36
1. Check the belt rating (120VAC only) and current draw of the treadmill, replace the belt and deck as necessary
2. Monitor the minimum line voltage as follows:
a. With the TRM at the Welcome banner
b. With a runner at 6MPH
c. With the TRM at the Welcome banner, and a runner at 6MPH on an adjoining tread
3. If fluctuations of greater than 15% are observed between the banner case (a.) and the runner @6MPH case (b.), or if fluctuations of 5V or more are seen when running on the adjoining TRM, request an evaluation of the distribution wiring.
Error 37
E-STOP Upper PCA/Lower PCA Mismatch
Applies to
TRM800.v2, TRM2XX
Issue Symptoms
The error 37 may occur after an E-STOP event. If the E-STOP event is not successfully cleared in the lower PCA and the upper display believes the E-STOP has been cleared, a error 37 will occur. Possible causes include pulling and resetting the E-STOP twice within the 10 second time-out period, pulling the E-STOP, turning off the treadmill, turning the treadmill back on, and then starting a course, or pulling the E-STOP, turning off the treadmill, reset the E-STOP, turning the treadmill back on, and then starting a course. Also possible is a break in the E-STOP line, or a loose cable connection.
Troubleshooting steps:
1. Verify the connectors are seated properly.
2. Verify Dielectric grease has been applied to both connectors.
3. Run the treadmill and move the communications cable attempting to duplicate the error. If it reproduces, change out the cable.
4. If this error is persistent and none of the above corrects the problem, install a new console.
5.If the console does not correct the problem, change the MC.
Recommended Additional Action:
Add Dielectric grease, to both connectors, recommended for all products regardless of age.
Error 40
No Lift Motion Detected
Applies to
All Treadmills and EFX, AMT12
Issue Symptoms
Error indicates that the incline (lift) system on either a treadmill, EFX or AMT12 has been instructed to start moving and no lift motion has been detected by the lift position monitoring system. Most likely causes are a blown lift fuse on the lower PCA or the lift motor is physically jammed and unable to move. On the EFX and the AMT12 a fully dead battery can also cause this error. While unlikely but possible, a faulty lift motor capacitor or winding will prevent movement.
Troubleshooting steps:
1. Remove power from the unit and remove the lift fuse from the lower PCA. Measure the fuse with an ohmmeter, if the reading is higher than very near zero, replace the fuse.
2. Disconnect the lift motor from the lift platform (treadmill, AMT12) or ramp (EFX). If the lift tube or lift nut is jammed against the motor housing, rotate the lift nut or lift tube away from the motor housing. Calibrate and install the lift motor per the appropriate service manual procedure.
3. With a voltmeter reading AC volts, measure between the black wire of the lift motor connector and the hot lead of the line filter. You should read line voltage. Enter Diagnostics, Machine Test, Incline Test, and operate the lift in the up direction. You should read approximately 200VAC (120V Units) or 300V (240V Units). If this value is significantly low the capacitor is failing, requiring lift motor replacement.
4. If a lift motor winding is bad the lift will not operate in one or both directions depending on the exact fault in the motor. The lift motor winding may be checked with an ohmmeter. A.C lift motors will have a split winding (3 wires). D.C lift motors will have a single winding (2 wires). On A.C motors both windings must be checked. Depending on the lift motor being tested, normal winding readings could vary anywhere between 1 and 60 ohms. Refer to the appropriate service manual for the motor being tested.
Error 42
Lift Position Out Of Range
Applies to
All Treadmills and EFX, AMT12
Issue Symptoms
The software on the lower PCA is expecting that the A/D value from the lift potentiometer is within a certain range, low to high. If the A/D value goes outside this range, an Error 42 will be displayed. The most likely cause of this error is the motor moving further than it should, or jamming against the housing. A loose connector or a damaged potentiometer inside the motor assembly will also cause this error.
Troubleshooting steps:
1. If the lift motor has drifted too low, disconnect the motor from the lift assembly and adjust the jack screw until the motor is in range. Perform the appropriate lift motor calibration procedure. If the motor continues to drift low, replace the motor.
2. Inspect the lift motor connector, verifying the pins are secure in the connector. Attach the connector to the lower PCA and ensure that it is locked into the header.
3. Enter Diagnostics, Machine Test, Incline or Crossramp test. Run the lift all the way extended and back to minimum. The A/D number should climb and decrease smoothly during the test. If not, replace the lift motor.
4. While in the Incline or Crossramp test scroll to see Glitches, and run the lift to both extremes. Glitches are anomalies recorded by the lower board during lift movement, indicating a possible or existing problem with the internal potentiometer or the gearing that turns it. Very few if any glitches should be recorded. If greater than 50 glitches are recorded during a full movement to either extreme, replacement of the lift motor is necessary.
Error 44
Un-commanded Lift Motion
Applies to
All machines with a lift actuator
Issue Symptoms
The lift control system has detected that the lift is in motion without a lift command having been issued. This can happen in one of two ways: either the lift drive circuit has failed in a turned on condition or the lift position sensor (lift position potentiometer or revolution sensor) is sending an erroneous signal to the lift control circuit. This is most often caused by a poor or intermittent connection of the lift motor potentiometer, or the potentiometer itself is defective. Less likely but possible is a defective lower PCA.
Troubleshooting steps:
1. Verify all wiring and connections associated with the lift motor assembly. Repair or replace wiring or connections as appropriate.
2. Operate the lift in the diagnostics while monitoring the lift position A/D number being displayed. If the reading is erratic and makes large changes in readings the lift position potentiometer is probably bad.
Replace the lift motor assembly.
3. If there is actual lift motion without a manual or program control lift command having been issued, replace the lower PCA.
Error 45
Lift Moving In The Wrong Direction
Applies to
All machines with a lift actuator
Issue Symptoms
The lift control system has detected that the lift is moving in the opposite direction of the issued lift command. This error would typically happen when the lift was already in motion (typically downward) when a lift command in the opposite direction (lift up) was issued. Some motors exhibited a very long turnaround time and the lift motor would still be moving in the original direction (downward) while the control system was attempting to move the lift in the opposite direction. Less likely but also possible would be a defective motor controller.
Troubleshooting steps:
1. Check that the MC is properly controlling the lift motor. Measure between the line filter hot output and the red wire of the lift motor connector while pressing the up button in Diagnostics. You should see line voltage when the motor is not being driven, and 0Vac when it is being driven. Repeat the test with the black wire of the connector and the downward drive. If the MC is not switching properly, replace the MC.
2. If the error 45 condition is persistent and the voltages from the controller are correct, replace the lift motor.
Error 46
Low Battery Voltage
Applies to
All self-powered units
Issue Symptoms
The operating system has a battery monitoring system. If the battery voltage falls below 11 Vdc when stride height movement is initiated (AMT12) or the battery voltage falls below 10 Vdc after the ramp movement has been initiated (EFX), ramp movement will be stopped and the message ERROR 46 will be displayed. Stride Height motion will not be enabled until such time as the battery voltage exceeds the above limits. The battery voltage must be raised to correct this condition either by battery charging or battery replacement. This is strictly a battery problem and not an incline system or incline motor problem. Possible causes include an open 10A slow blow fuse (AMT12 only) on the battery terminal, faulty or poor connection on the battery or lower PCA, or a depleted battery.
Note: While an occurrence of the error is possible, this error is rarely reported on self-powered bikes and climbers.
Troubleshooting steps:
1. (AMT12) Remove the lift fuse from the in-line fuse holder on the positive battery cable. Measure the fuse with an ohmmeter, the fuse should read approximately 1 ohm or less. If the ohmmeter reading is significantly high, replace the fuse.
2. Check battery cable connector for shorts or poor connections.
3 Enter the diagnostic program per procedure, P80 Settings or Accessing the P30 Diagnostic Software. Using the diagnostic program allows you to test the incline system without continuously pedaling the unit if you have an external power supply. Otherwise, you will need to continue to pedal the unit. Connect a DC volt meter to the J3 connector on the lower PCA as follows: voltmeter common lead to terminal 3 (black wire) and voltmeter "hot" lead to terminal 2 (red wire). Using the STRIDE HEIGHT. The voltmeter should read +12 Vdc approximately when the incline is instructed to move upward and -12 Vdc approximately when the incline is instructed to move downward. If the either voltage measurement is significantly low, replace the battery.

Thursday, January 12, 2017

Sony - DSX-M50BT – Test mode – Initialization - Bluetooth function check

Setting method:
1. In the state of source off (the clock is displayed on the liquid crystal display), enter the test mode by pressing the buttons on the remote commander in order of the [4] >  [5] >  [1] (press only the [1] button for two seconds).
2. It is set to the test mode, and all segments of the liquid crystal display light.
Releasing method:
Press the [SOURCE OFF] button for 1 second.
To confirm the state of the internal microphone used when a handsfree function is used, the microphone audio is output from the speaker.
1. Enter the test mode.
2. Press the [SOURCE OFF] button to select the Bluetooth Phone function.
3. On/off of the microphone audio loopback function changes whenever the [ALBUM UP 2] button is pressed (“ALBM” is displayed in the liquid crystal display)
1. Required Equipment
Set to be tested (DSX-M50BT)
Cellular phone
Bluetooth audio devices
Speaker connection
DC power supply (12 V)
2. Preparation
Confirm the setting of the DSX-M50BT, and note down it.
Press the [CALL] button and rotate the control dial until “PAIRING” appears, then press it, confirm that the Bluetooth signal icon  is flashing.
Turn on the Bluetooth function of the cellular phone.
3. Test Environment
No other Bluetooth device is making a communication in the periphery (within 20 m).
No other DSX-M50BT are supplied with electric power.
There are no two or more wireless LAN access points in the periphery (with 50 m) (one is OK).
The set should be tested in a place such as a meeting room, free from ambient noise.
The speaker at the far end should be in a place such as another meeting room separated acoustically.

Beware of the following points when conducting the talking test:
# There is no fault if a talking can be made by adjusting appropriately the volume of the telephone of the other party and the cellular phone connected through the Bluetooth, besides the setup of DSX-M50BT.
# The speaker’s voice will become loud naturally if the periphery is noisy, or become low if quiet (even though the speaker intents to talk on the same volume level).
# The speaker’s voice will become loud naturally if the other party’s voice is loud.
Bluetooth Phone (Hands Free) Function Check
1. Search for this unit from the Bluetooth device (cellular phone), and confirm whether this unit (“Sony Automotive”) is displayed.
2. Search for the distance of this unit and the Bluetooth device (cellular phone) about 5 m apart.
Confirm whether the Bluetooth device (or this unit) is displayed after it searches.
3. Do the pairing of the cellular phone and this unit (input of pass key).
4. Connect the cellular phone with this unit, and confirm the “HF” icon lights.
5. Confirm the connection continues even if the distance of the cellular phone and this unit is separated by about 5 m.
6. Set this unit besides the “BT PHONE” source, and call the cellular phone connected with this unit.
Confirm the automatic change of this unit into “BT PHONE” source, and the change into the screen for incoming calls.
Confirm the ring tone is heard from the speaker.
7. Take a phone call (press the [CALL] button), and start a conversation.
Confirm the other person voice is heard from the front speaker.
Speak toward the microphone of this unit, and confirm whether the other party hears its voice.
Compare the sound quality with a normal set. Confirm that there is no big difference.
8. Turn on ACC from off, and confirm whether this unit connects Bluetooth with the cellular phone again.
Note: Depending on the cellular phone, it might not reconnect automatically when ACC is turned on.
Bluetooth Audio Function Check
Depending on the connecting BT Audio device, track information (e.g. track name, playback time) can be on display.
If the device doesn’t support AVRCP1.3, or, if AVRCP1.3 feature of the device has not been validated with DSX-M50BT; the track information won’t be shown.
Even if there is no track information on display during playback of an AVRCP1.3 device, it is not a failure of DSX-M50BT.
1. Connect the Bluetooth audio device (or cellular phone with Bluetooth audio function) with this unit, and confirm the “Audio Streaming” icon lights.
2. Playback Bluetooth audio. Confirm the sound is emitted from this unit when this unit is switched to “Bluetooth Audio” source.
3. Confirm whether Bluetooth audio can be controlled by operating this unit (the [SEEK+ ], [SEEK– ] and [PAUSE ] buttons operation).
Note: Varies depending on the connected Bluetooth audio device.
1. In the state of source off (the clock is displayed), press and hold the [PUSH ENTER/SELECT] button.
2. Rotate the control dial, and select the “BT INIT”.
3. Press the [PUSH ENTER/SELECT] button, and the message “INIT-NO” is displayed on the liquid crystal display.
4. Rotate the control dial clockwise, and the message “INITYES” is displayed on the liquid crystal display.
5. Press the [PUSH ENTER/SELECT] button, and the message “INITIAL” is blinked on the liquid crystal display.
6. When “Bluetooth Initialize” is completed, the message “COMPLETE” is displayed on the liquid crystal display for a moment.
7. Press the [ RUTURN /MODE] button, and return to the state of source off (the clock is displayed) mode.

Bose SoundTouch 30 – Disassembling procedure – How to remove the woofers

1. Grill removal
1.1 Remove the four Phillips-head screws from the bottom baseplate.
1.2 Remove the three screws holding the Grille in place.
1.3 Push down on the grille from the top to release the tabs. Then pull outward from the bottom.
1.4 Disconnect the flex cable from the display board and remove the grille.
Important Note: Take ESD precautions when connecting or disconnecting the OLED display.
2. Rear Cover Removal
Remove the three screws holding the rear cover in place.

2.2 Remove the rear cover sliding from top.
3. Left and Right End Cap RemovalRemove the six screws securing the left End Cap. Repeat this step for the Right End Cap.
4. Top Cap Removal
Remove the foam tape covering the top cap screws.
4.2 Remove the four screws from the front side of the assembly.
4.3 Remove the foam tape covering the screws holding the top cap to rear side of the assembly.
4.4 Remove the four screws from the rear side of the assembly.
4.5 Grab the front middle section of top cover and pull upward to release the cover.
4.6 Remove the cable from the button board, then remove the top cap.
5. Button Board Removal
5.1 Remove the four Phillips-head screws from the button board.
5.2 The key pad and the button board are attached by PSA (Pressure Sensitive Adhesive). When replacing the button board, pull the key pad from the board and replace both parts
6. SoundTouch Common Module Removal
Disconnect the Common Module connector and remove the three screws securing the board.
7. Power Supply PCB Removal
7.1 Remove the four screws holding the power supply board to the assembly.
7.2 Disconnect connectors J200, J201, J401 and J402 to completely remove the board.
8. I/O PCB Removal
Remove the five screws holding the I/O board to the assembly.
8.2 Disconnect connectors J305, J400, J401 and J600 to completely remove the board.
9. Woofer Removal
Remove the 8 screws holding the bottom bracket to the acoustic enclosure.
9.2 Remove the three screws from the heatsink.
9.3 Before removing the woofer cover, take note of the cable locations shown below for reassembly.
9.4 Remove the three screws holding the woofer cover in place.
9.5 Remove the four screws securing the woofer to the acoustic assembly to remove the driver.