How to disassemble LG WD-1247 BD washing machine-Exploded view

 

TEST OPERATION

WIRING DIAGRAM

Disassemble procedure

Unscrew 2 screws on the back of the top plate.
Pull the top plate backward and upward as shown.

Pull out the drawer and unscrew 2 screws.
Lift the side the Control Panel Assembly and pull it out

Push out PANEL ASSEMBLY,CONTROL after Push the hook below

Unscrew the 10 screws from the Control Panel Assembly.
Disassemble the Display PWB Assembly.

Disconnect connector from the wiring.

Two screws are unscrewed.

Push the hook of between BASE,CABINET and PWB ASSEMBLY below as shown.
Pull the PWB assembly (Main) to arrow direction.

Inlet valve removal

Disassemble the top plate assembly.
Pull out the drawer.
Push out the DISPENSER ASSEMBLY after unscrew 2 screws.

Unscrew the nut at the lower part of the dispenser.

Disassemble the 3 or 4 connectors from the valves.

① Red Housing(BK/WH-YL/BK)
② NA Housing(WH/BL-BK)
③ Blue Housing(GY/WH-BK)
④ Red Housing(BL/RD-BK)

Unscrew 2 or 4 screws from the back of the cabinet.

Unscrew 2 or 4 screws from the back of the cabinet.

Cabinet cover removal

Unscrew the 2 screws from the lower of the DECO PANEL.

Unscrew the 4 screws from the back of the DECO PANEL

Pull out the DECO PANEL

Unscrew the 4 screws from upper of the cabinet cover.
Unscrew the screw from filter cover.

Put a flat ( - ) screwdriver or putty knife into the both sides of the filter cover, and pull it out.

Unscrew the screw from the lower side of the cabinet cover.

Open the door.
Disassemble the clamp assembly.

Tilt the cabinet cover.
Disconnect the door switch connector.

NOTE: When assembling the CABINET COVER, connect the connector.

Lift and separate the cabinet cover.

Disassemble the clamp assembly.
Disassemble the Gasket.

Open the door.
Remove the two screws from the Hinge.
When removing the Door Assembly, it is necessary to hold the break is inner of the cabinet cover.

[Be careful: The door is heavy.]

Open the door and disassemble the CLAMP ASSEMBLY.
Unscrew the 2 screws.

NOTE: Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY.

Disassemble the cabinet cover

Separate the pump hose, the bellows and the circulation hose assembly from the pump assembly.
Disassemble the pump assembly in arrow direction.

Separate the pump hose, the bellows and the circulation hose assembly from the pump assembly.
Disassemble the pump assembly in arrow direction.

CAUTION
• When assembling the heater, insert the heater into the heater clip on the bottom of the tub and check the position of wire color.
• Tighten the fastening nut so the heater is secure.

Disassemble the cabinet cover.
Unplug the white connector from the thermistor.
Pull it out by holding the bracket of the thermistor.

When foreign object is stuck between drum and tub

Disassemble the cabinet cover.
Separate the heater from the tub.
Remove any foreign objects (wire, coin, etc.) by inserting a long bar in the opening.

Disassemble the back cover.
Remove the bolt.
Pull out the Rotor.

Unscrew the 2 screws from the tub bracket.
Remove the 6 bolts on the stator.
Unplug the 2 connectors from the stator.

Disassemble the damper hinges from the tub and base.
Separate the dampers.

NOTE:  Once removed, replace the damper with new one.

To check out the fault diagnosis of TSG, in case of removing the water inside, you can pull out the plug and let the water drain away.

Be cautious in case of the TSG is hot temperature.

Remove the housing coupled the TSG (Heater, Water level frequency-sensor, Thermistor)

Taking out the screw of the TSG and Body Frame.

Taking out the screws of Body Frame (2EA)

Separate the hoses from the TSG.

Remove the Body Frame and then, separate the TSG from the washer.

Exploded view

LG WD-1247 BD WASHING MACHINE-Error codes, troubleshooting, fault diagnosis, wiring and program chart

 

CHILD LOCK

Use this option to prevent unwanted use of the washer. Press and hold the Wash and Rinse button for 3 seconds to lock/unlock control.

When Child lock is set, CHILD LOCK lights and all buttons are disabled except the Power button. You can lock the washer while it is operating.

Test operation

SERVICE CHECKING

Be careful of electric shock or disconnecting the parts while trouble shooting.

Voltage of each terminal is 220-240V~ and DC while applying an electric current.

TEST MODE

Pressing Rinse, and Spin button simultaneously.

Press the Power button, while the above condition.

Press the Start/Pause button as follows.

HOW TO KNOW THE WATER LEVEL FREQUENCY and HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION.

Temperature of each thermistor at operating condition

Thermistor in tub : Press the [Temp.] button.

 Thermistor in dry duct : Press the [Turbo Steam] button.

WIRING DIAGRAM and PROGRAM CHART

ERROR DISPLAY

If you press the Start/Pause button in error condition, any error except “PE” will disappear and the machine will change into pause status.

In case of  [PE, TE, dHE] if the error is not resolved within 20 sec., and in case of other errors, if the error is not resolved within 4 min., power will be turned off automatically and the error only will be blinked. But in case of  , [FE] power will not be turned off.

FAULT DIAGNOSIS AND TROUBLE SHOOTING

Be careful of electric shock or disconnecting the parts while trouble shooting.

First of all, check the connection of each part terminal with wiring diagram.

If you replace the MAIN PWB ASSEMBLY, Put in the connectors correctly.

Vestel 17IPS62-R4 LED TV Power Supply and Philco PH32M LED TV SMPS schematics

 

Attention to this Vestel schematic;  it seems to me that most of them are unfinished versions. 

The value of many components has nothing to do with what's on the board. 

For example one of the several errors R57, R58, R98 (3 resistors in series) in the scheme has 10R on the board has 3 X 39K, if the value of the schematic is placed,  it will make fire. It is therefore necessary to be very careful with Vestel schemes.

Used with: Toshiba 32W3863DB, Turbo-X TXV 3230D, Linsar 32LED1600, Telefunken TE3228, Telefunken TE32SMB35Z2D, Finlux 32-FFA-5615, Hitachi 32HB6J41U, JVC LY-39C770, Panasonic TX32DW334, Toshiba 32W1333DB, 32D1334DB, Hitachi 32HB6J51U and many other brand models.

Vestel 17IPS62-R4 LED TV Power Supply

SCHEMATIC PART TO BE NOTED:

Philco PH32M LED TV SMPS schematic

How to enter the service mode of JVC AV32H20EUS, AV28H20EUS, and AV28H20EUB – FULL DETAILS OF ALL ADJUSTMENTS

 It makes sense to avoid exposure to electrical shock.  While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

Color System:  PAL - SECAM - NTSC (Only in EXT mode)

Stereo System:  A2 (B-G,D-K)/ NICAM (B-G,I,D-K,L)

Teletext System

 FLOF (Fastext)

TOP (German system)

WST (W world Standard system)

Power Input:  220 – 240 V AC, 50Hz

Power consumption:  187W(Max) / 138W(Avg), standby : 2.6W

21-pin Euro connector (SCART socket) : EXT-1 - EXT-2 - EXT-3

[Don't short between the LIVE side ground and ISOLATED (NEUTRAL) side ground or EARTH side ground when repairing.]

REPLACEMENT OF MEMORY ICs

(1) Power off

Switch the power off and unplug the power cord from the outlet.

(2) Replace ICs.

Be sure to use memory ICs written with the initial data values.

(3) Power on

Plug the power cord into the outlet and switch the power on.

(4) Check and set SYSTEM CONSTANT SET :

* It must not adjust without signal.

1) Press the INFORMATION key and the MUTING key of the REMOTE CONTROL UNIT simultaneously.

2) The SERVICE MENU screen of Fig. 1 will be displayed.

3) While the SERVICE MENU is displayed, press the

INFORMATION key and MUTING key simultaneously, and the

SYSTEM CONSTANT SET screen of Fig. 2 will be displayed.

4) Check the setting values of the SYSTEM CONSTANT SET.

 If the value is different, select the setting item with the FUNCTION UP-DOWN key, and set the correct value with the FUNCTION --+ key.

5) Press the MENU key to memorize the setting value.

6) Press the INFORMATION key twice, and return to the normal screen.

(5) Setting of receive channels

Set the receive channel.  For setting, refer to the OPERATING INSTRUCTIONS.

(6) User settings

Check the user setting values of Table 2, and if setting value is different, set the correct value.  For setting, refer to the OPERATING INSTRUCTIONS.

(7) Setting of SERVICE MENU

Verify the setting items of the SERVICE MENU of Table 3, and reset where necessary.  For setting, refer to the SERVICE ADJUSTMENTS.

SERVICE ADJUSTMENTS

NB:  Never touch parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service adjustment.

SERVICE MENU

Operate the SERVICE MENU with the REMOTE CONTROL UNIT.

SERVICE MENU ITEMS

With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classified in the following items of settings

(Adjustments):

(1) 1. IF･･･････････････････････ This mode adjusts the setting values of the IF circuit.

(2) 2.V/C ･･････････････････････ This mode adjusts the setting values of the VIDEO / CHROMA circuit.

(3) 3.AUDIO･･･････････････････ This mode adjusts the setting values of the multiplic ity SOUND circuit.

(4) 4.DEF ･････････････････････ This mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below.

FULL (100 or 120Hzi)

PANORAMIC (100 or 120Hzi)

SUBTIT LE (100 or 120Hzi)

COMPRESS (Fixed value) (100 or 120Hzi)

(5) 5.VSM PRESET･････････････ This mode adjusts the initial setting values of COOL, NORMAL and WARM.

(VSM : Video Status Memory)

(1) How to enter SERVICE MENU

Press the “INFORMATION” key and the “MUT ING” key of the REMOTE CONTROL UNIT simultaneously, and the SERVICE MENU screen of will be displayed.

Selection of SUB MENU SCREEN

Press one of keys 1～5 of the REMOTE CONTROL UNIT and select the SUB MENU SCREEN), form the SERVICE MENU.

SERVICE MENU → SUB MENU

1. IF

2. V - C

3. AUDIO

4. DEF.

5. VSM PRESET

6. STATUS

7. PIP

8. ---

9. SHIPPING (OFF)

0. BUS FREE

1) Method of Setting 1.IF

[VCO] ･･･････････････････････････････････ It must not adjust without signal.

① 1 Key････････････････････････････････ Select 1.IF.

② 1 Key････････････････････････････････ Select 1.VCO(CW)

Make sure that the arrow position between the ABOVE REF and BELOW REF.

③ INFORMATION Key･･･････････････････ Return to the SERVICE MENU screen.

Method of setting 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET.

① 2～5 Key･････････････････････････････ Select one from 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET.

② FUNCTION UP or DOWN Key ･････ Select setting items.

③ FUNCTION – or +  Key ･････････････ Set (adjust) the setting values of the setting items.

④ MENU Key ･･･････････････････････････ Memorize the setting value.

(Before storing the setting values in memory, do not press the CH, TV, POWER ON or OFF key - if you do, the values will not be stored in memory.)

⑤ INFORMATION Key･･･････････････････ Return to the SERVICE MENU screen.

NB:  3) Do not setting 6.STATUS, 7.PIP, 8.--- , 9.SHIPPING(OFF) & 0.BUS FREE.

(4) Release of SERVICE MENU

1) After completing the setting, return to the SERVICE MENU, then again press the INFORMATION key.

Service adjustments full details

Deflection adjustment

There are 4 aspect modes ( ①FULL, ②PANORAMIC, ③SUBTITLE, ④COMPRES) of the adjustment ( 1 ) 100Hz i mode, ( 2 ) 120Hz i mode ･･････ depending upon the kind of signals ( vertical frequency 100Hzi / 120Hzi ).

When the 100Hz FULL mode has been established, the setting of other modes will be done automatically.

However, if the picture quality has not been optimized, adjust each mod e again, respectively.

The adjustment using the remote control unit is made on the basis of the initial setting values.

The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

AUDIO CIRCUIT ADJUSTMENT

Do not touch 3. AUDIO adjustment of the SERVICE MENU as it requires no adjustment.

If values had changed for the some reason, set the initial values in the following table.

VESTEL 17MB171 software update, troubleshooting and general descriptions

 

Before removing the rear cover from the TV for servicing, make sure that no cables are fixated to the cover. Release the cables from their clamps and disconnect (if any). Failure to do so may damage the wires and  other components of the TV.

17MB171 main board is driven by MTK SOC. This IC is a single chip iDTV solution that supports channel decoding, MPEG decoding, and media-centre functionality enabled by a high performance AV CODEC and CPU.

T-T2-C-A TUNER (U118)

The Si2151 is Silicon Labs' sixth-generation hybrid TV tuner supporting all worldwide terrestrial and cable TV standards. Requiring no external balun, SAW filters, wire wound inductors or LNAs, the Si2151 offers the lowest-cost BOM for a hybrid TV tuner. Also included are an integrated power-on reset circuit and an option for single power supply operation. As with prior-generation Silicon Labs TV tuners, the Si2151 maintains very high linearity and low noise to deliver superior picture quality and a higher number of received stations when compared to other silicon tuners. The Si2151 offers increased immunity to WiFi and LTE interference, eliminating the need for external filtering. For the best performance with next-generation digital TV standards, such as DVB-T2/C2, the Si2151 delivers industry-leading phase noise performance.

MAIN AMPLIFIER (U123) (8W-10W-12W OPTIONS)

AD82587D is a digital audio amplifier capable of driving a pair of 8 ohm, 20W or a single 4 ohm, 40W speaker, both which operate with play music at a 24V supply without external heat-sink or fan requirement.  Using I2C digital control interface, the user can control AD82587D’s input format selection, DRC (dynamic range control), mute and volume control functions. AD82587D has many built-in protection circuits to safeguard AD82587D from connection errors.

Power Socket and Power Options

Power socket is used for taking 12V_STBY voltage which is produced in power card. Also socket is used for giving dimming, backlight and standby signals with power card. Power socket pinning is shown in figure.

12V_STBY is converted to several different voltages on the mainboard which are shown in below figure.

SAMSUNG EMMC 8GB KLM8G1GETF-B041 BGA153 (U128)

SAMSUNG eMMC is an embedded MMC solution designed in a BGA package form. eMMC operation is identical to a MMC device and therefore is a simple read and write to memory using MMC protocol v5.1 which is a industry standard. eMMC consists of NAND flash and a MMC controller. 3V supply voltage is required for the NAND area (VDDF or VCC) whereas 1.8V or 3V dual supply voltage (VDD or VCCQ) is supported for the MMC controller.  SAMSUNG eMMC supports HS400 in order to improve sequential bandwidth, especially sequential read performance.  There are several advantages of using eMMC. It is easy to use as the MMC interface allows easy integration with any microprocessor with MMC host. Any revision or amendment of NAND is invisible to the host as the embedded MMC controller insulates NAND technology from the host. This leads to faster product development as well as faster times to market. The embedded flash management software or FTL(Flash Transition Layer) of eMMC manages Wear Levelling, Bad Block Management and ECC. The FTL supports all features of the Samsung NAND flash and achieves optimal performance.

MAIN SOFTWARE UPDATE

Method-1

1. Copy MstarUpgrade.bin to USB stick (root directory, FAT32)

2. Enter M-Boot console first (Long press "ENTER" key on Tera Term Console when your device reboot then do AC On)

3. Plug the USB stick to your target board

4. Execute "custar" in M-Boot console to perform upgrading

Method-2

1. Copy upgrade_loader.pkg to root folder of USB stick (or copy upgrade_loader_no_tvcertificate.pkg if you don't want to erase keys, credentials, etc.)

2. Insert USB disk to one of the USB ports on your TV

3. Power on TV and wait until you see the bootlogo

4. You should see logs like below.

NO BACKLIGHT PROBLEM

Backlight pin, dimming pin, backlight supply, stby on/off pin

BACKLIGHT_ON/OFF pin should be high when the backlight is ON. Collector pin of Q113 must be low when the backlight is OFF. If it is a problem, please check Q181. Also it can be tested in TP500 or Pin5 of CN2 in main board. Please also check panel cables.

Dimming pin should be high or square wave in open position. If it is low, please check S294 for MTK side. It also can be checked at TP499. Please also check panel or power cables and connectors.

CI is not working when CI module inserted.

CI supply should be 5V when CI module inserted. If it is not 5V please check CI_PWR_CTRL, this pin should be low.

Check mechanical position of CI module. Is it inserted properly or not?

Detect ports should be low. If it is not low please check CI connector pins, CI module pins.

NO SOUND PROBLEM

Check supply voltages of 24V_VCC, VDD_AUDIO and 3V3_AMP with a voltage-meter. There may be a problem in headphone connector or headphone detect circuit (when headphone is connected, speakers are automatically muted). Measure voltage at HP_DETECT pin, it should be 3.3V.

STANDBY ON-OFF PROBLEM

There may be a problem about power supply. Check main supplies with a voltage-meter. Also there may be a problem about SW. Try to update TV with latest SW. Additionally it is good to check SW printouts via Teraterm program. These printouts may give a clue about the problem. You can use VGA for  Teraterm program connection.

SERVICE MENU

In order to reach service menu, first chose Channel, then press “MENU” buton, press “Advanced Options” then write “4725” by using remote controller.

You can see the service menu main screen below. You can check SW releases by using this menu under Diagnostic title. In addition, you can make changes on video settings, audio settings, DAP Parameters etc. using regarding titles. You may also use USB Operations for SW update and update Unique Keys and Configuration files.