LG V-CQ302HT User manual

P/No.: 3828FI3864U
Nov.2008
Printed in China
MODEL: V-CQ302HT
VACUUM CLEANER
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.

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CONTENTS
SAFETY PRECAUTIONS...............................................................................................................3
CAUTIONS.....................................................................................................................................3
DESCRIPTION...............................................................................................................................4
SPECIFICATIONS .........................................................................................................................4
DISASSEMBLY ...........................................................................................................................5-6
TROUBLE SHOOTING ..............................................................................................................7-9
SCHEMATIC DIAGRAM...............................................................................................................10
PRINTED CIRCUIT BOARD...................................................................................................10-11
EXPLODED VIEW .................................................................................................................12-14
REPLACEMENT PARTS LIST .....................................................................................................15
LGE Internal Use OnlyCopyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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SAFETY PRECAUTIONS
BEFORE OPERATION THIS VACUUM CLEANER, READ THIS SERVICE MANUAL THOROUGHLY, AND
OBSERVE EACH POINT CAREFULLY.
1. Filter
1) The filter is composed of a motor safety filter, an
exhaust filter and a paper bag or a cloth bag.
2) Never use the vacuum cleaner without filters.
It may harm to the motor.
3) When the cloth bag, the motor safety filter and
the exhaust filter are soiled, wash the filters with
neutral cleanser.
Note : Re-use of the cloth bag, motor safety filter.
• Never wash the filter in a washing machine or
in a dishwasher.
• Never use hot water for washing the filter.
• Re-use the filter after drying it completely in the
shade.
• Do not dry near fire or direct sun ray.
2. Dust indicator
When the dust bag is full of dust, the indicator LED
shines turns to red (Suction power willT be reduced).
Then, change the paper bag with the new one or
clean the cloth bag.
3. Avoid sucking such materials as:
1) Liquid or wet dust :
Clogging the ventilation holes, reduces the suction
power significantly and harms the motor.
2) Inflammable liquids such as benzene, alcohol or
solvents.
3) Burning objects such as cigarette butts.
4) Bulky objects such as vinyl, paper etc.
5) Sharp objects such as needles, pins, metal or
glass particles etc.
4. Attachments
1) Nozzle : for cleaning wooden floor, the room floor
and carpet.
2) Dusting brush and Crevice tool :
For cleaning any crevice, inside comers of
window frames.
For delicate vacuuming of fabrics on the
furniture, curtains, etc.
3) Upholstery nozzle : for vacuuming the dust on
the upholstery.
5. Close supervision is necessary when this
vacuum cleaner is used by or near
children. Children's carelessness may
cause damage to the cleaner or injure
persons.
6. Air exhausted from the vacuum cleaner is
normally warm. But if extraordinarily hot
air is exhausted, check if the telescopic
tube, hose or dust bag is clogged or not.
7. Electric shock could occur if used
outdoors or on wet surfaces.
CAUTIONS
BEFORE ATTEMPTING TO SERVICE OR ADJUST ANY PART OF THE VACUUM CLEANER, DISCONNECT THE
ELECTRICAL POWER SUPPLY CORD FROM THE WALL OUTLET.
1. Motor exchange
1) Separate the Body Cover and Body Base by
unfastening the screws.
2) After disconnecting the lead wires, replace the
old motor with a new one.
2. In case of exchanging other parts, refer
to the exploded view.
LGE Internal Use Only Copyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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DESCRIPTION
Telescopic Pipe
Ass,y
Elbow Pipe Ass'y
Carpet Pedal
Nozzle ASS'Y
QUILT
Nozzle ASS'Y
Parquet
Nozzle ASS'Y
Flexible Hose Ass'y
ATTACHMENTS
UPHOLSTERY
NOZZLE
BRUSH ASSEMBLY,
DUST
CREVICE TOOL BRUSH ASSEMBLY,
DUST
Power on Lamp
(when the power is on power
on lamp is always on)
Filter working Lamp
(HEPA filter is working)
Cord Reel Button
Dust Indicator
Turbine
Nozzle ASS'Y
SPECIFICATIONS
1. MODEL : REFER TO THE COVER PAGE
2. POWER SOURCE : ON RATING PLATE
3. POWER CONSUMPTION : ON RATING PLATE
4. POWER CONTROL : SLIDE CONTROL (F/HOSE)
5. CAPACITY : 2.0L
6. CORD LENGTH : 6 m
7. NET WEIGHT : 4.2 kg
8. PACKING WEIGHT : 6.4 kg
9. NET DIMENSION : 280 370 250 (W DH)mm
10.
PACKING DIMENSION :330 570 330 (W DH)mm
11. ATTACHMENTS
HOSE ......................................................................... 1EA
TELESCOPIC PIPE ASS'Y ........................................ 1EA
NOZZLE ASS'Y.......................................................... 1EA
DUSTING BRUSH ASS'Y........................................... 1EA
UPHOLSTERY NOZZLE............................................ 1EA
PAPER BAG ASS'Y ................................................... 1EA
EXTRA PAPER BAG ASS'Y (PAPER, OPTION)....... 2EA
CREVICE TOOL ........................................................ 1EA
ELBOW PIPE ASS'Y.................................................. 1EA
QUILT NOZZLE ASS'Y............................................... 1EA
PARQUET NOZZLE ASS'Y........................................ 1EA
TURBINE NOZZLE ASS'Y ......................................... 1EA
•This specifications are subject to change according to the
buyer's request.
LGE Internal Use OnlyCopyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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DISASSEMBLY
1. Body Cover Assembly Replacement
1) Grasp Body and open filter cover.
2) Open the filter cover and remove the five screws
fastening the body base in the direction of arrow.
2. PWB Assembly Replacement
•Lift the PWB ASS'Y in the direction of the arrow.
NOTE: Before attempting to service or adjust any part of the vacuum cleaner,disconnect the electrical power supply cord
from the wall outlet.
•Almost all the parts of this vacuum cleaner can be
assembled with a screw driver and each connecting
component easily fits each other.
Disassemble one by one referring to the exploded
view.
•If possible, don’t disassemble except for the necessary
parts. It is not necessary to disassemble the parts that
are not detailed in the exploded view.
3) Lift body cover in the direction of the arrow.
Filter cover
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Only for training and service purposes

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3. Motor Assemlby Repalcement
•Lift the motor assembly in the direction of the arrow
after stripping of the lead wires.
4. Cordreel Assembly Replacement
1) Lift the cordreel assembly from the body base in
the direction of the arrow.
2) Strip off the lead wires.
5. Exhaust filter Replacement
•Push the latch of the exhaust filter cover in the
direction of the arrow.
Motor ASS'Y
Cordreel ASS'Y
UNLOCK LOCK
LGE Internal Use OnlyCopyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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TROUBLE SHOOTING
1. SWITCH ON BUT MOTOR DOES NOT TURN
2. SWITCH ON, MOTOR DOES NOT TURN BUT BUZZES
Poor plug insertion Insert again
The fuse is melt down in the
coverknife switch
Check the power source Exchange the fuse
Power cord cut Repair or exchange
Interior lead wire cut Exchange the lead wire
Motor (stator armature)coil
cut or damaged Exchange the motor
Poor contact carbon brush
defaced Exchange or repair
Poor switch contact point 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
Checking Cause Solution
LGE Internal Use Only Copyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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3. SWITCH OFF BUT MOTOR TURNS
4. WEAK SUCTION POWER
Poor connections Repair
Poor switch Exchange the switch
Carbon brush defaced Exchange the motor
Motor armature cut Exchange the motor
Foreign matters attached to
the impeller Remove the foreign matters
Low voltage Inquire to the power utility
company
Hose and extension wands
are clogged with foreign
matters.
Remove the foreign matters
in the hose or extension
wands
Filter bag or cloth bag is
filled with inhaled foreign
matters
Remove the foreign matters
or exchange the filter bag or
clean the cloth bag
The slide knob on the
handle is opened Close the slide knob by sliding it
Low rotation speed
Motor turns normally,
but suction power is
weak
LGE Internal Use OnlyCopyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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5. VIBRATION NOISES
6. RADIO, TV RECEPTION DISTURBANCE
7. IMPROPER HOSE OR NOZZLE CONNECTION
Loose parts Secure firmly
Unbalanced motor
assembly Exchange or repair the motor
Foreign matters are
attached to the impeller Remove the foreign matters
Poor rectification of carbon
brush Exchange the motor
Armature is cut or foreign
matters attached Exchange motor. Remove foreign matters
Poor cord, lead wire Exchange cord, lead wire
Poor rectification of carbon
brush Exchange the motor
Poor electric connector or
receiver Repair the electric connector or receiver
Poor capacitor Exchange the capacitor
Bent connection parts Exchange the parts
Poor connection
(Caused by foreign matters) Remove the foreign matters and reconnect
LGE Internal Use Only Copyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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

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EXPLODED VIEW
MAVBT1
MBDBB8
MFGBF1
MHYBC1
MEGBB1
MAMBB1
AHJBA1
MDSCF1
MCQBO1 AJWBA1
EAUBA1
MCQBM1
MCKCA2
MHYBA1
MFCBR1
MBDBB9
ADQBP1
AHDBR1
MDSBA1
MCQCA1
MDSBA1
EBRBM1
MDJBM1
LGE Internal Use Only Copyright © 200 7LG Electronics. Inc. All right reserved.
Only for training and service purposes

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MCKCF1
MBGBR1
MHYCA1
MFCCR1
MEBBC1
MCKCD1
MCKCC1
MCKBE1
ADQCE1
EBRCM1
MFGTA1
MHYCC1
MCKCB1
ACVBA1
AESCA1
MCKCX1
LGE Internal Use OnlyCopyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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AEMAF1 AGRPT1
AGBN41
ABCAD1
MFVAC1
AGBNU1
NZ-41
LGE Internal Use Only Copyright © 200 7LG Electronics. Inc. All right reserved.
Only for training and service purposes
ADQBH1

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REPLACEMENT PARTS LIST
130401 BASE,BODY 3040FI1541D
135502 COVER,FRONT 3550FI1816C
139201 PACKING,DUST SEAL 3920FI2422A
139202 PACKING, MOTOR MOUNT 3920FI3841A
139204 PACKING, SEAL 3920FI3763C
139206 PACKING, TERMINAL 3920FI4750A
144411 CASTER ASM 4441FI3616A
144801 HOOK,FILTER SETTING 4480FI3741B
146611 WHEEL ASM 4881FI1011D
4661FI1011C
146811 MOTOR ASM,VC 4681FI2467D
146871 CORD REEL ASM 4687FI1491G
148201 BUMPER BODY(R) 4820FI2414B
148203 BUMPER BODY(L) 4820FI2413B
149601 MOUNT BAG 4960FI2318C
149704 SPRING,COIL 4970FI4719B
152301 FILTER(MECH),MOTOR SAFETY 5230FI3781C
152311 FILTER ASSY,PAPER
PERMANENT TEXTILE BAG
5231FI3018M
5231FI2024H
166311 CONNECTOR,ASSEMBLY 6801FI3381J
168711 PWB(PCB),ASM MAIN 6871FX2215D
235501 COVER, BODY 3550FI1812C
235502 COVER,CONTROL 3550FI1814E
3550FI1814C
235503 COVER, EXHAUST FILTER 3550FI1815D
3550FI1815E
235515 COVER DISPLAY 3550FI3893B
236501 HANDLE, CARRIER 3650FI1528C
239401 SPONGE,ABSORBING 3940FI3746B
239402 SPONGE, ABSORBING 3940FI3646A
249701 SPRING,COIL 4970FI4728A
250202
BUTTON, CORDREEL
5020FI3814E
5020FI3814C
5020FI3814B
252302 FILTER EXHAUST ASM 5231FI2500A
268712 PWB(LED) 6871FX3111B
335211 INDICATOR ASS'Y 3521FI3700B
335501 COVER, FILTER
3550FI1906B
3550FI1906C
3550FI1906D
335503 COVER ACCESSORY 3550FI2617B
335506 INDICATOR COVER 3550FI3803B
340261 LATCH
4026FI3699F
4026FI3699C
4026FI3699B
L/NO. DESCRIPTION PART No. REMARK
LGE Internal Use OnlyCopyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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349011 DAMPER ASM 4901FI3436L
349701 LATCH SPRING 4790FI4719D
445101 LEVER,RELEASE 4510FI3626C
445101 LEVER RELEASE
4510FI3627C
4510FI3627D
4510FI3627E
449801 SUPPORTER,TERMINAL 3I23009L
452151 HOSE ASM, FLEXIBLE
5215FI1365C
5215FI1365D
5215FI1365E
B TYPE
452151 HOSE ASM, FLEXIBLE 5215FI1330U A TYPE
552491 NOZZLE ASM 5249FI1421K NZ-41
552491 NOZZLE ASM 5249FI1426F NZ-43
NZ-32
NZ-14
552493 QUILT NOZZLE ASS'Y 5249FI1411U
5249FI1420B
650581 CREVICE TOOL 5058FI3584D
652012 PIPE ASM, TELESCOPIC 5201FI2493F B TYPE
652012 PIPE ASM, TELESCOPIC 5201FI2487S A TYPE
652013 ELBOW PIPE ASS'Y 5201FI1005F
652031 BRUSH ASS'Y, DUST 5203FI2068A B TYPE
652031 BRUSH ASS'Y, DUST 5203FI2072F A TYPE
652491 NOZZLE ASM,UPHOLSTERY 5249FI2456C
552495 NOZZLE ASM, TURBINE 5249FI1431B
L/NO. DESCRIPTION PART No. REMARK
LGE Internal Use Only Copyright © 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes

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

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