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Only training and service purposes

How to Disassemble, Reassemble and Repair Main Parts

- How to assemble the Tube

(1) Prepare the tube as

shown in the picture

(2) Pay attention to the

direction of the check

valve arrow and connect

the tube as shown in the

figure.

(3) Assemble the Tube

ⓓ

into the pump`s inlet as

shown in the picture.

Make sure that the

pump`s outlet goes

upward

(4) Assemble the Tube

ⓑ

into the pump`s outlet

as shown in the picture.

(5) Assemble the Tube

ⓒ

(2ea) as shown in the picture.

12. How to Use a Battery Test Jig

1. Prepare a test jig and

battery.

2. Connect the adaptor and

the test jig.

3. Connect the adaptor to

the plug.

4. Turn on the test jig.

5. Press the A9-k button

and check if the light is

on.

6. Fit the battery and press

Start.

7. Check the battery status.

8. Judge whether it is normal or not and determine the

type of defect.

Содержание CodeZero A9 Series

Страница 1: ...uding by way of email facsimile or other electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manual Copy...

Страница 3: ...imile or other electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manual Copyright 2021 LG Electronics ...

Страница 4: ...ecautions and directions for use 10 Maintenance 13 Technical Note on the Part 14 Directions for Use 15 Using the Smart Function 24 How to Disassemble Reassemble and Repair Main Parts 26 Safety precautions and checkpoints for repairs 36 Actual wiring diagram 37 Circuit diagram 38 Failures and measures 43 Cleaning function operation and error modes 46 Exploded view of structure and list of parts 47 ...

Страница 5: ...igh mode Up to 60 minutes in the Standard mode Battery Model name EAC633822 Type Rechargeable lithium ion battery Rating DC 25 2 V 2300 mAh 1EA or 2EA 1 It is measured at room temperature based on the company test criteria using two fully charged batteries in the product via Wi Fi connection One new battery fully charged while attached to the product body and another new battery fully charged in t...

Страница 8: ...rol button according to the area to be cleaned 2 Featuring an anti tangle power nozzle Removes ultrafine dust 3 Featuring dual lithium batteries for applicable models only Two long life lithium batteries eliminate the need to recharge during cleaning Based on the Standard mode each battery can be used for approximately 40 minutes when fully charged allowing up to approximately 80 minutes cleaning ...

Страница 9: ...umidity If the problem persists contact the LG Electronics Service Centre When cleaning a high place support the bottom of the product body with your hand Remove small stones sands fine dust etc from the brush of the nozzle to prevent a coated floor from being scratched Follow the manufacturer s recommendations when cleaning floors carpets and rugs Do not clean a TV LCD or monitor with a nozzle be...

Страница 13: ...ways remove the battery before cleaning the product Clean the filter periodically to maintain the normal suction power of the product If the suction power becomes weak or dust is filled to the max fill line of the dust bin empty the dust bin Caution Always install the exhaust filter and free filter into the vacuum body after cleaning them If you use the product without installing the filters dust ...

Страница 14: ... All rights reserved Only training and service purposes Technical Note on the Part Model name Item S9 Classification Motor integrated in the product body Power DC 25 2V Power consumption 370W MAX 590W Service life More than 700 hours ...

Страница 26: ... main parts There is no need to disassemble further than into the parts shown in the exploded view Precautions for Disassembly 1 How to Replace the Main Body and Handy 1 Loosen the screw at the bottom of the product 2 Push the lever upwards to open the plate 3 Loosen the screw you can see below 4 Pull the support cover while pressing it as shown in the photograph 5 Press the Handy part firmly 6 Re...

Страница 27: ...nt damage to the decor The button needs to be replaced if damaged 3 Loosen the screw at the button part 4 Hold and remove the bumper by hand 5 Remove the harness attached to the handle 6 Remove the power PCB by hand 7 Push the upper hook part and the main PCB part 8 Pull the main PCB part 9 Reassemble following the reverse order of disassembly 3 How to Replace the Wi Fi PCB 1 Remove the harness at...

Страница 28: ... 2 Hold the pipe part and pull 3 Loosen the screw at the bottom of the pipe 4 Hold the pipe part and pull 5 Remove the connector and gasket 6 Remove the filter cover and filter by hand 7 Disassemble three screws from the air guide 8 Remove the product body gasket and harness 9 Remove the motor located in the product body 10 Reassemble following the reverse order of disassembly Note If the gasket i...

Страница 29: ...sembly 6 How to Disassemble the Nozzle Motor Floor Nozzle 1 Disassemble the nozzle roller For a detailed disassembly method refer to How to Disassemble the Nozzle Roller 2 Remove the center screw 1EA 3 Disassemble the button as shown in the photograph 4 Remove the screw from the button part 5 Disassemble the side decor as shown in the photograph 6 Disassemble the plate and bottom as shown in the p...

Страница 30: ... and wire you will find they are sturdily fastened with hooks 14 Disassemble the hose as shown in the photograph 15 Disassemble the hooks by pressing them as shown in the photograph 7 Removing the Handy Decor Assay 1 Push in the inner hook with a screwdriver to widen the decor 2 Work on other spots to widen the decor as above 3 Hold the decor assay and pull to remove it ...

Страница 31: ...upward 6 Reassemble in the reverse sequence Be sure use the new screws when to fasten the screws on the mop plate When assembly the mop plate Screw Left side Clockwise Screw Right side Counterclockwise Do not let wire be pressed 9 How to disassemble main PCB Mop Nozzle for North America 1 Remove 13 screws 2 Disassemble the mop nozzle 3 Disconnect the 4 harness connectors on PCB 4 remove motor part...

Страница 32: ...ssemble in the reverse sequence Be sure use the new screws when to fasten the screws on the mop plate When assembly the mop plate Screw Left side Clockwise Screw Right side Counterclockwise Do not let wire be pressed 11 How to assemble the Mop Nozzle for North America How to assemble the harness 1 Assemble the Bracket Assembly R L and PCB to the Base Assembly 2 Assemble the harness as shown in the...

Страница 33: ...ump s inlet as shown in the picture Make sure that the pump s outlet goes upward 4 Assemble the Tube ⓑ into the pump s outlet as shown in the picture 5 Assemble the Tube ⓒ 2ea as shown in the picture 12 How to Use a Battery Test Jig 1 Prepare a test jig and battery 2 Connect the adaptor and the test jig 3 Connect the adaptor to the plug 4 Turn on the test jig 5 Press the A9 k button and check if t...

Страница 34: ...w to Check If the Battery is Faulty without a Battery Jig Insert the battery and confirm that vaccume cleaner works properly Insert the battery 1 Cleaner operation O normal battery LED lights 1 bar battery normal requires charging LED lights 2 bar battery normal requires charging LED lights 3 bar battery normal 2 Cleaner operation X Measure the voltage of battery LED lights on X Measure the voltag...

Страница 35: ...tery from the product body 2 Remove the screws from the support and cover 3 Push the lever upwards to open the plate 4 Hold the product and holder and lift them to remove the support and cover 5 Press the bottom plate assembly where the spring is fitted installing it vertically downward so that it lines up to the groove as shown in the photograph 6 Install the screws in the support and cover ...

Страница 36: ...g a pin or a coin into contact with any live part 3 Be sure to use only an LG designated part for any replacement made during repairs 4 Use appropriate tools when making repairs 5 Be sure to check the power cord for any damage etc before and after any repairs If the sheath of the power cord is peeled back or the power cord is disconnected reconnect it firmly and wrap it using insulation tape 6 Be ...

Страница 40: ... 40 Copyright LG Electronics Inc All rights reserved Only training and service purposes Circuit diagram Main PCB Mop nozzle LED PCB Mop Nozzle for North America Motor PCB Mop Nozzle for North America ...

Страница 43: ...Connect Disconnect the charging cable Failures Check Cause Repairs and measures The rotation is slow The rotation is normal but the suction power is weak Check the connection of the connector Foreign objects are attached to the impeller The adjustable extension tube and nozzle are blocked by dust and foreign objects The Suction Power Control Button is in Low mode or faulty The exhaust filter is cl...

Страница 44: ...g exceeds 640 minutes the filter cleaning alarm icon is turned on continuously It disappears when you turn on and off the product Remove the prefilter exhaust filter and large dust separator from the inside of the main body clean and re install them Wi Fi check alert icon Main body handle Main body When the Wi Fi function is turned on the connection to ThinQ is established enabling smart diagnosis...

Страница 45: ...u pull it down after rotating it the large dust separator will be removed 2 With the dust compression lever pulled down clean the inside of the dust bin using the cleaning brush accessory provided Pull the dust compression lever down Remove dust caught in the gap using the cleaning brush It is recommended to remove any dust in the cracks at the top and the compression unit thoroughly as shown in t...

Страница 46: ...amage with a tester Check the PCB terminal motor output voltage Replace the motor Replace the motor wire Reassemble or replace the connector Reassemble or replace the terminal Replace the main PCB The roller motor is faulty During the cleaning operation the suction motor operates normally but the roller motor won t operate The motor unit is faulty The motor wire is disconnected The power connector...

Страница 47: ...erved Only training and service purposes Exploded view of structure and list of parts EV Nozzle Assembly Floor Nozzle Assembly Quilt Series AGB501 AHR706 MEG501 AAN701 AGU001 AGB403 ACW102 EAU401 AGB403 MEG501 AAN701 AGU001 AGB403 ACW102 EAU401 ...

Страница 49: ...rights reserved Only training and service purposes Exploded view of structure and list of parts EV Nozzle Assembly Mop for North America AGB404 MBL801 AGM910 AJL002 MGQ001 ABA404 EBR403 MFC501 EBR301 ACQ201 ABA504 AGU901 FAB604 FAB603 ...

Страница 50: ...vice purposes Exploded view of structure and list of parts EV Handy Assembly ADQ901 ADQ001 AJJ103 EAU702 ABN902 ADV705 MJM804 MFC801 MEK720 ABH801 EBR101 AED101 MBG103 AGU504 AJL101 EBZ504 EBR801 EAD201 MDS501 MCK201 AGM919 MCR601 MCR801 MGE801 ACW205 MGJ101 MCK601 AGM916 ...

Страница 51: ... Electronics Inc All rights reserved Only training and service purposes Exploded view of structure and list of parts EV ABC901 AGB401 AAA201 AAA601 EAC204 ABC801 AGR322 Accessories Battery Adjustable extension tube ...

Страница 53: ......

Страница 54: ...mile or other electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manual Copyright 2021 LG Electronics I...

Страница 55: ...utions and direction for use 58 Installing the product 61 Using the product 64 How to clean the product 67 How to disassemble assemble and repair main parts 69 Safety precautions and checkpoints for repairs 74 Actual wiring diagram 75 Circuit diagram 76 Failures and measures 78 Cleaning function operation and error modes 95 Exploded view of structure and list of parts 97 ...

Страница 56: ... mm X Length 297 mm X Height 1009 mm Weight Approximately 10 1 kg Power consumption Cleaning 9 A Charging 0 6 A Input 120 V 60 Hz Output DC 28 3 V 1 15 A Battery 1 Model name EAC633822 Type Rechargeable lithium ion battery Rating DC 25 2 V 2400 mAh 1EA or 2EA 1 Dual batteries 2 batteries or a single battery 1 battery is provided depending on the A9S cleaner model purchased ...

Страница 69: ...m of the product 2 Remove all Main PCB connectors 3 Loosen 2 screws and replace the Main PCB 4 Reassemble following the reverse order of disassembly As the end of the heat sink is sharp be sure to carry out the operation whilst wearing gloves 3 How to replace the Top Cover 1 Open the Top Cover 2 Remove the 2 rubber packings from the top 3 Loosen the 4 screws 4 Remove the Top Cover 5 Remove the 2 c...

Страница 70: ...them up 9 Loosen the 8 screws at the back 10 Remove the rear case 11 Loosen the 4 screws shown at the bottom of the product 12 Remove all Main PCB connectors 13 Loosen the 2 screws and remove the Main PCB 14 Remove the harness at the back from the hole 15 Loosen the 2 screws fixing the Duct Assembly and replace the Duct Assembly 16 Reassemble following the reverse order of disassembly Carry out th...

Страница 71: ... Remove the top hinge bracket at the back by pulling it up 8 Remove the left and right doors by pulling them up 9 Loosen the 8 screws at the back 10 Remove the rear case 11 Loosen the 4 screws shown at the bottom of the product 12 Remove all Main PCB connectors 13 Loosen the 2 screws and remove the Main PCB 14 Remove the harness at the back from the hole 15 Loosen the 2 screws fixing the Duct Asse...

Страница 72: ...remove the motor 5 Remove the 4 external screws on both sides 6 Take out the gasket loosen the hook and disassemble it into halves 7 Remove the micro switch on the left side 8 Remove the lever and the gear on the right side 9 Loosen the screw in the middle of the holder 10 Loosen the hook and disassemble it into halves 11 Disassemble the gear and the bearing inside 12 Twist and remove the holder f...

Страница 73: ... remove the spring 5 Loosen the hook and remove the glass cover 6 Twist and remove the guide rail 7 Loosen the 3 screws and remove the micro switch and the PCB 8 Remove the motor housing gasket 9 Take out the motor case and remove the gasket 10 Loosen the hook on the left and right sides of the case and open the case cover 12 Take out the motor and remove the connection line 13 Loosen the 4 screws...

Страница 74: ... a coin into contact with any live part 3 Be sure to use only an LG designated part for any replacement made during repairs 4 Use an appropriate tool when making repairs 5 Be sure to check the power cord for any damage etc before and after any repairs If the sheath of the power cord is peeled back or the power cord is disconnected reconnect it firmly and wrap it using insulation tape 6 Be sure to ...

Страница 75: ...tion Motor Micro Switch UV LED Micro Switch Door Synchro Motor 2 Sealing Green Synchro Motor 1 Door Orange Micro Switch Sealing Micro Switch DC Motor DC Motor Door Auto Open Close Display PCB Handy Terminal Micro Switch Battery Terminal L G N CN22 CN28 CN16 CN27 CN30 CN28 CN28 CN21 ႑ ญ OUTPUT 29 4V TP TP CN30 CN30 CN30 CN30 CN30 CN21 CN30 ...

Страница 78: ... and measures Replace the Main PCB Disassemble the Duct Assembly and replace any faulty parts Replace the Display PCB or replace the Touch Gasket Replace the power cord Replace the suction opening and closing hole motor Check the harness connection status and replace it if necessary Check the harness connection status and replace it if necessary Replace the Display PCB Disassemble the Duct Assembl...

Страница 79: ...om the bottom and then remove the bottom plate CN21 sealing motor 1 5pin cover open switch motor 3 6pin CN28 Charging the product body battery 1 2pin Charging the auxiliary battery 3 4pin DC Motor 5 10Pin CN22 Power cord CN27 Suction motor CN16 Dust bag Full Bin sensing CN30 sealing motor Switch 1 3pin cover open switch 5 7pin DC Motor Switch 9 11pin Display 2 4 6 8 10 12pin Auxiliary battery dete...

Страница 80: ...heck whether the Cam assembled at the front end of the motor presses down the Micro S W If the cam cannot press down the Micro S W due to wear replace the cam If the cam is not worn and it presses down the Micro S W replace the Micro S W 1 Check if the DC Motor is locked Check if the Gear has deviated from its position and the teeth on the Gear has become worn If the DC Motor won t operate replace...

Страница 81: ...2 If no sound of the Micro S W being pressed is heard when the Hooker moves back and forth between the left and right sides replace the Micro S W 1 Check if the dust suction channel is clogged with foreign objects If so remove any foreign objects 2 Replace the dust bag 3 Remove foreign objects from the exhaust filter and the pre filter and check 4 If there are no foreign objects in the channel but...

Страница 82: ...s the normal signal 00 displayed when the battery is attached to the test jig Is there any foreign object on the charging terminal of the charging station and or the product body No foreign objects on the charging terminal Move to 3 Charging failure 2 2 Replace the battery Try again after removing foreign objects from the charging terminal Check the failure table attached to the right side of the ...

Страница 83: ...intermediate connector and replace it if it is abnormal Based on the opposite side of the No CN28 Connector hook A voltage of between 4V and 6V is normal when the product body is not attached and a voltage of 28 1V or higher is normal when the product body is attached A voltage of 28 1V or higher is normal when the Micro Switch on the Auxiliary battery is pressed Replace the harness EAD65906902 EA...

Страница 84: ...connected initially Does the cycle begin when the Start button is pressed No sealing operation Sealing operation Is 4 6V measured at the charging terminal of the product body Measure the terminal voltage 4 6V Does the dust emptying cycle begin automatically along with a buzzer sound from the product body when the product body is mounted after the sealing motor is initialized Is the automatic mode ...

Страница 85: ...ximately 5 seconds Does the sealing motor move to the next cycle after completing the cycle to grab the product Movement to fix the product on both sides Does the operation move to the next cycle after the cycle to open the dust canister cover is completed Check 4 4 Sealing motor operation failure Check 4 5 Dust canister cover hook removal motor failure Cover is closed Cover is open Check using a ...

Страница 86: ...ime Approximately 7 seconds Does the suction motor operate Check the operating sound approximately 15 seconds Is the dust canister cover on the product body closed correctly Is the opening and closing door closed Does the sealing motor unlock correctly Operation to unlock the product on both sides Cover is closed Cover is open Check 4 7 The suction motor operation is faulty Check 4 6 Opening and c...

Страница 87: ...e Main PCBA is faulty Is the power cord disconnected or the connector inserted correctly Replace the power cord or reinsert the connector and check again Is 5V measured at Main PCBA Move to 4 2 Display failure Check Point Checkpoints Measures Not full insertion Normal Check if the AC voltage is 110V after supplying power from the wall socket Replace the Main PCBA EBR33171201 No No Yes Yes ...

Страница 88: ...D65896501 Replace the Display PCBA EBR32115302 Is 5V applied between No 1 pin and No 6 pin of the Display PCBA CN39 Do Display LEDs light right after the power cord is inserted Check if the voltage between No 2 pin 5V and No 12 pin GND of the Main PCBA CN30 is 5V Check if the voltage between No 1 pin RD and No 6 pin BL is 5V Is there a 5V output between Main PCBA CN30 No 2 and No 15 Check Point Ch...

Страница 89: ...CBA Touch unit operate when it is touched after taking out the Display PCBA from the injection Does the PCBA Touch unit operate when it is touched after the touch gasket is removed Assemble the gasket in reference to the white line 3 LEDs light in order Check Point Checkpoints Measures Check 4 2 The display light is faulty Reassemble the Display PCBA and check again if the PCBA Touch unit operates...

Страница 90: ...erted and connected between the lines of the same colour Check if No 1 pin and No 2 pin of the white line are connected when the Micro Switch is pressed Check the AC voltage at the time of operation 100V or higher Is there any section where the AC voltage measured on both ends of the motor is 100V or higher during the sealing cycle Sealing motor green sticker Main CN21 Be careful of high voltage w...

Страница 91: ...here the AC voltage measured on both ends of the motor is 100V or higher during the hook removal cycle Replace the Harness EAD65896504 Replace the Main PCBA EBR33171201 Replace the hook removal motor 6549W1S013U Replace the Harness EAD65906902 EAD65896509 Main CN21 Hook removal motor orange sticker Check if the connector is inserted and connected between the lines of the same colour Check for pin ...

Страница 92: ...isconnection on the harness Is there a point where the applied DC voltage on both ends of the motor is 20V or higher during the opening and closing door cycle Try again after reinserting the connector Replace the Main PCBA EBR33171201 Replace the DC motor EAU61624305 Replace the Harness EAD65906902 EAD65896508 Main PCBA CN28 Check for a short between lines of the same colour Main PCBA CN28 DC Moto...

Страница 93: ...ness connected correctly CN27 Is the resistance measured on both ends of the suction motor 10 Ohms or less There a section where the measured AC voltage on both ends of the motor is 90V or higher during the cycle Check for normal insertion Check the AC voltage at the time of operation 90V or higher Check after reinserting the connector Replace the suction motor Check if the suction motor harness i...

Страница 94: ... out again after the dust bag has been replaced Red LED Off Is the resistance at both ends of the pressure switch connector CN16 1M Ohm or higher Does the red LED still flash after the pressure switch connector CN16 is removed from the Main PCBA Replace the pressure switch EAD65896502 Replace the Main PCBA EBR33171201 Normal operation The Main PCBA is normal Check the resistance at both ends of th...

Страница 95: ... Using a tester check if the motor coil is disconnected Replace the Chamber Assembly Motor Wire disconnection Using a tester check if it is disconnected CN24 CN25 suction motor connection line Replace the Motor Wire Connector fastened incorrectly Check the connector fastening and assembly status CN24 CN25 Reassemble or replace the Connector The Main PCB is faulty Using a tester check if the Triac ...

Страница 96: ... the output voltage of the battery terminal 29 2V Product body battery When the battery is removed and the output voltage is measured within 7 seconds of the product body being installed Check the assembly status of the Connector and then replace the Main PCB Connector fastened incorrectly Check the connector fastening and assembly status Reassemble or replace the Connector The battery terminal is...

Страница 97: ...nd service purposes Exploded view of structure and list of parts EV Dust emptying charging station ADC0301 MDS1603 ACQ4801 ADJ4201 MJH4201 MAZ9001 MCK4701 MEG5301 ADC0302 AAA1501 ABV9201 MAZ9001 EAD5901 EBR1201 ADQ3501 AJL3901 ACQ4701 MJY1005 AGU3701 MEG5301 ACQ5011 ...

Страница 98: ...Copyright LG Electronics Inc All rights reserved Only training and service purposes Exploded view of structure and list of parts Body Cover Assembly EV ACQ4701 497721G 501001B MFC1001 501001B ...

Страница 99: ...ght LG Electronics Inc All rights reserved Only training and service purposes Exploded view of structure and list of parts EV Top Cover Assembly ACQ4801 MBN5601 EBR5301 MDS2205 MDS2206 MCK5201 MHK5505 MEZ9218 ...

Страница 100: ...rved Only training and service purposes ADC0301 ADC0302 MJH6501 MJH6501 MJP1101 MJP1101 MHJ6102 MHJ6102 MEG5101 MHY4801 MHJ5003 MEG5101 MHY4801 MHJ5003 MJP1101 MJP1101 MJH6601 MJH6601 Exploded view of structure and list of parts EV Door Assembly ...

Страница 101: ...re and list of parts EV Duct Assembly ADJ4201 ACQ4901 EAU4305 ABA1901 MEA2501 MDT3101 MDT3201 MJH4701 MEG5201 MEG5401 MJP2701 MHY4801 MBJ2301 654011M EAD6504 MCK5101 MFC1201 ABA0501 MEA2301 MEG6701 MFC1301 MDT2401 654011U EAD6506 EAD6507 EAD6508 EAD6509 MGZ8101 MDT3301 MAP3401 MJH4601 MAK2501 MHJ4901 MAP3401 ...

Страница 102: ...ics Inc All rights reserved Only training and service purposes Exploded view of structure and list of parts Chamber Assembly ABV9201 AJX0701 MBR1401 MDS2301 MEA2401 MHY5001 498748E EAU3809 MFC1101 MDS6164 ACV0103 EAD6502 EV ...

Страница 103: ...Copyright LG Electronics Inc All rights reserved Only training and service purposes Bottom Plate Assembly Exploded view of structure and list of parts AGU3701 MDS0516 MGJ8201 MDS1603 EV ...

Страница 104: ......

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