VACUUM CLEANER SERVICE MANUAL...VACUUM CLEANER SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. MODEL : V-C7780CEV M K P/No. : …

VACUUM CLEANERSERVICE MANUALCAUTION

BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL.

MODEL : V-C7780CEV

MK

P/No. : MFL35720509

Internal Use Only

Website http://biz.lgservice.com

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CONTENTS

SAFETY PRECAUTIONS ...............................................................................................................3

CAUTIONS......................................................................................................................................3

DESCRIPTION ................................................................................................................................4

SPECIFICATIONS...........................................................................................................................4

DISASSEMBLY...........................................................................................................................5~6

TROUBLE SHOOTING GUIDE ..................................................................................................7~9

BLOCK DIAGRAM.................................................................................................................. 10

EXPLODED VIEW ..................................................................................................................11~13

Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use OnlyOnly for training and service purposes

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SAFETY PRECAUTIONSBEFORE OPERATING THIS VACUUM CLEANER, READ THIS SERVICE MANUAL THOROUGHLY,AND OBSERVE EACH POINT CAREFULLY.

1. Motor filter(Air Cleaner)1) This filter is reusable.

2) Never use the vacuum cleaner without filter.It may damage the motor.

3) When the light of body is on, wash the motor filterwith water and brush.

4) Even if the light is not on, wash the motor filter atleast once 6 months.

NOTE : Reusing of the motor filter.Never wash the filter in a washing machine or in adishwasher.

Never use hot water for washing the filter.

Reuse the filter after drying it completely in theshade for a day.

Do not dry near fire or direct sunray.

2. Exhaust filter(Washable HEPA filter)1) This filter is reusable HEPA filter.

2) For clean air, theis filter must be assembled.

3) Wash the exhaust filter with water once a year.

4) When the light of body is on, wash the exhaust filter withwater.

NOTE : Reusing of the exhaust filter.Never wash the filter in a washing machine or in adishwasher.

Never use hot water for washing the filter.

Reuse the filter after drying it completely in theshade for a half day.

Do not dry near fire or direct sunray.

Do not brush the filter. This will cause permanentlydamage allowing dust to by-pass the filter.

3. Avoid suction such materials as :

1) Liquid or wet dust :Clogs the ventilation holes, reduces the suctionpower significantly and harms the motor.

2) Inflammable liquids such as benzene, alcohol orsolvents.

3) Burning objects such as cigarette butts.

4) Bulky objects such as vinyl, paper etc.

5) Sharp objects such as needles, pins, metal, glassparticles etc.

4. AttachmentsNozzle : For cleaning wooden floor, the room floor

and carpet.

Dusting Brush and Crevice Tool:For cleaning any crevice, inside corners of windowframes.For delicate vacuuming of fabrics on the furniture,curtains, etc.

Upholstery Nozzle : For vacuuming the dust on theupholstery.

However, do not use the crevice tool more than 20minutes because it may cause harm to the motor.

5. Close supervision is necessary when thisvacuum cleaner is used by or near children.Children’s carelessness may cause damageto the cleaner or injure persons.

6. Air exhausted from the vacuum cleaner isnormally warm. But if extraordinarily hot airis exhausted, check if the telescopic tube,hose or clean filter is clogged or not.

7. Electric shock could occur if used outdoorsor on wet surfaces.

1. Motor exchange1) Separate the Body Cover and Body Base by

unfastening the screws.

2) After disconnecting the lead wires, replace the oldmotor with a new one.

2. In case of exchanging other parts. referto the exploded view.

CAUTIONSBEFORE ATTEMPTING TO SERVICE OR ADJUST ANY PART OF THE VACUUM CLEANER, DISCONNECTTHE ELECTRICAL POWER SUPPLY CORD FROM THE WALL OUTLET.

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes

DESCRIPTION

ATTACHMENTS

Motor Cover

Power Cord

Switch Button (ON/OFF)V-C7760NT*/NE*/NTV*

Flexible Hose ASS’Y

TelesscopicPipe ASS’Y

Cord Reel Button

Dust Tank

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SPECIFICATIONS• MODEL : REFER TO THE COVER PAGE• POWER SOURCE : ON RATING PLATE• POWER CONSUMPTION : ON RATING PLATE• POWER CONTROL :

- MAIN : SLIDE CONTROL (F/HOSE)(V-C7750HE*, V-C7760HT*/HE*, V-C7766HE*, V-C7768HEU*)

MICOM CONTROL (F/HOSE)(V-C7770CT*/CE*/CTV*/CEU*)PUSH ON/OFF(BODY)(V-C7760NT*/NE*, V-C7765NT*/NTV*)

-SUB : VACUUM POWER ADJUSTMENT BY SLIDE KNOB (NT*/NE*)

• CORD LENGTH : 7 m• HOSE LENGTH : 1.8 m• NET WEIGHT : 5.4 kg• PACKING WEIGHT : 9.4 kg• NET DIMENSION : 298 410 290 (W D H)mm• PACKING DIMENSION : 330 565 330 (W D H)mm• ATTACHMENTS

HOSE......................................................................... 1EATELESCOPIC PIPE ASSY ........................................ 1EANOZZLE ASSY ...........................................................1EADUSTING BRUSH & CREVICE TOOL...................... 1EAUPHOLSTERY NOZZLE ............................................1EABRUSH ASS’Y............................................................1EAEXTRA AIR FILTER ...................................................1EA

• This specifications are subject to change according to the buyer's request.

DUSTING BRUSH & CREVICE TOOL UPHOLSTERY NOZZLE

CANISTER


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DISASSEMBLY

• Almost all of the parts of this vacuum cleaner can be disassembled with a screw driver and each connectingcomponent easily fits each other. Disassemble one by one referring to the exploded view.

• If possible, don't disassemble except for the necessaryparts. It is not necessary to disassemble the parts thatare not detailed in the exploded view.

1. Body Cover Assembly Replacement1) Remove the dust tank from the set.

2) Remove the four screws fastening the body base.

3) Disassemble the body cover, raising the body cover.

2. Motor Assembly Replacement1) Detach exhaust cover in the direction of the arrow and

unhook the motor covr with “ ” driver.

2) Pull out the motor and disconnect the lead wires from it.

NOTE: Before attempting to service or adjust any part of the vacuum cleaner, disconnect the electrical power supply cordfrom the wall outlet.

Motor Ass'y


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3. Cord Reel Assembly Replacement1) Lift the cord reel assembly from the body base.

4. Disassembly of Top Cover 1) Remove the three screws fastening the body cover and

top cover.

2) Unhook the two hooks with “ ” driver.

5. Disassembly of Body Base Assembly1) Remove the two screws fastening, the motor housing

cover.

Cord Reel Ass'y


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CHECKING

CHECK THE POWERSOURCE

The fuse is melt down in thecoverknife switch. Exchange the fuse.

Poor plug insertion Insert again.

Power cord cut Repair or exchange.

Interior lead wire cut Exchange the lead wire.

Motor(stator, armature) coilcut or damaged.

Exchange the motor.

Poor contact carbon brushdefaced.

Exchange or repair the motor.

Poor switch contact point(V-C7760HT/HE, V-C7765HT/HTV)

Exchange the switch.

Motor armature cut. Exchange the motor.

Ball bearing defacement Exchange the motor.

Impeller hindrance(Caused by foreign matters)

Remove the foreign matters.

CAUSE SOLUTION

TROUBLE SHOOTING GUIDE1. SWITCH ON BUT MOTOR DOSE NOT TURN.

2. SWITCH ON, MOTOR DOES NOT TURN BUT BUZZES.


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Carbon brush defacedExchange the carbon brushor the motor.

Motor armature cut Exchange the motor.

Foreign matters attached tothe impeller


Low voltageInquire to the power utilitycompany.

Hose and extension wandsare clogged with foreign matters.

Remove the foreign mattersin the hose or extensionwands.

The slide knob on the handle isopened or the control knob islocated on weak position.

Close the slide knob by sliding it.Regulate the knob.

The motor filter is clogged. Clean the motor filter.

The exhaust filter is clogged. Exchange the exhaust filter.

Poor connection Repair the slide volume of hoseor triac of PWB assembly

Poor switch(V-C7760NT/NE/NTV)

Low rotation speed

Motor turns normally,but suction power is weak.

Exchange the switch.

3. SWITCH OFF BUT MOTOR TURNS

4. WEAK SUCTION POWER


Loose parts Secure firmly.

Unbalanced motor assembly Exchange or repair the motor.

Foreign matters are attachedto the impeller.


Poor carbon brush rectification Exchange the motor.

Poor cord, lead wire Exchange cord, lead wire.

Poor rectification ofcarbon brush

Exchange the motor.

Poor electric connector orreceiver

Repair the electric connectoror receiver.

Poor capacitor Exchange the capacitor.

Bent connection parts Exchange the parts.

Poor connection(Caused by foreign matters)

Remove the foreign mattersand reconnect.

Armature is cut or foreignmatters attached.

Exchange the motorRemove foreign matters.

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5. VIBRATION NOISES

6. RADIO, TV RECEPTION DISTURBANCE

7. IMPROPER TUBE OF NOZZLE CONNECTION


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CIRCUIT DIAGRAM

BLOCK DIAGRAM

SCHEMATIC DIAGRAM

SLIDE VOLUME

LED PWB ASM

PRESSURES/W

SUBPWBASM

MAINPWBASM

T/P

BK BK

GY

BL

BL BL

GY

BK

GY

BK

RD

BL

GY

GY

SLIDE VOLUME

LED PWB ASM

PRESSURE S/W

SUBPWBASM

MAINPWBASM

M

T/P

BK BK

GY

BL

BL BL

GY

BK

GY

BK

RD

BL

GY

GY

MOTOR

BD1

C10.47uF/AC250

R10470K1/2W

R10-1470K1/2W

R125.6K

C42200uF25V

C30.47uF/100V

D61N4002

IC2

R141K

R9100

R1524K

S/VOL

R5100

D51N4148

Q2A1015

Q1C3198

R711K

R618K

IC11

2

6

4

1

LED1

2

6

4

R411K

R34701/2W

T2

T1G

R23301/2W

VR120K

R8

1K

M

+

TRANS

P - S/W

OPTO-TRIAC

OPTION

OPTO-TRIAC

T/P


MCKBM1

EBFCA1

MDJBM1

ACVCA1

MCQBM1

EAUBA1

MCKCE8

ADQCE1

AHJBA1

MBDBB1

AJWBA8

MAMBB1

MCKBZ1

MCKCE9

MEGAA1

ABCAD1

AGBNU1

ADQTC1

MGJTC9

MGJTC8

MJHTB1

MJMTD1

MFGTD1

MBLTD1

AJLTD1

MDSBA1

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EXPLODED VIEW BASE ASSEMBLY, BODY

AHDBR1

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MCKCD1

MEBBC1

MCKCT1

MFGTA1

EBRCD1

MFZSP1

MBGCC1

MCKCZ1

EBRCD1

EBRBM1

MGECC1

MBGCR1

MCKCB1

MHYCA1


COVER ASSEMBLY, BODY

MK

#EV##EV##EV#

Documents

VACUUM CLEANER SERVICE MANUAL...VACUUM CLEANER SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. MODEL : V-C7780CEV M K P/No. : …