Daewoo RCC-740 User manual

June,2006
Service Manual
VACUUM CLEANER
MODEL : RCC-740
DAEWOO ELECTRONICS CO., LTD

Page
1.SPECIFICATIONS ----------------------------------
-
2
2. EXTERNAL VIEWS
2-1. ASSEMBLY -----------------------------------------------
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3
3. DIAGRAM
3-1. WIRING DIAGRAM ------------------------------------------ 4
3-2. CIRCUIT DIAGRAM -----------------------------------------
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5
4. TRBOUBLE SHOOTING GUIDE -----------------------
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6
5. DISASSEMBLING AND TREATMENT
5-1. CLEANER ASSEMBLY ---------------------------------------
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7
5-2. BODY ASSEMBLY ------------------------------------------
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8
5-3. COVER ASSEMBLY -----------------------------------------
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9
5-4. CORDREEL ASSEMBLY -------------------------------------- 10
5-5. MOTOR ASSEMBLY ----------------------------------------
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11
5-6. HOSE ASSEMBLY ------------------------------------------
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12
5-7 DUST BOX ASSEMBLY --------------------------------------- 13
5-8. BRUSH PEDAL ASSEMBLY -----------------------------------
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14
6. EXPLODED VIEW AND PARTS LIST
6-1. CLEANER ASSEMBLY ---------------------------------------
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15
6-2. BODY ASSEMBLY ------------------------------------------
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17
6-3. MOTOR ASSEMBLY ----------------------------------------
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19
6-4. CASE MOTOR ASSEMBLY ------------------------------------
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20
6-5. CORDREEL ASSEMBLY -------------------------------------- 21
6-6. COVER BODY ASSEMBLY ------------------------------------
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23
6-7. DUST BOX ASSEMBLY --------------------------------------
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24
6-8. HOSE ASSEMBLY ------------------------------------------
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26
6-9. PIPE ASSEMBLY -------------------------------------------
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27
6-10. BRUSH PEDAL ASSEMBLY ----------------------------------
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28
CONTENTS

1. SPECIFICATIONS
MODEL RCC-740
Rating AC 230V, 50Hz
Watts 1800W
Weight(body) 4.5Kg
Dimension
(WxDxH) 4413 x 228 x 295mm
Anti-biotic
NanoSilver Dust Box
Hose PVC transparency
1.6M
Pipe One touch
Main Brush Pedal
Sub Brush Dusting / Crevice
Exhaust Filter HEPA Filter
convenience transparency dust box / 360 degree rotational hose /
stand keeping and body keeping temporary / convenient handle for moveing
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RCC-740
A- Dust Box ○
B- Mood Lamp X
C- HEPA Filter ○
D- General Filter X
E- Open Grip Hose ○
F- Pipe (One touch aluminum) ○
G- Main Brush (Pedal) ○
H- Dusting, Crevice Nozzle ○
Part Name
2-1. ASSEMBLY
2. EXTERNAL VIE
W
- 3 -

3. DIAGRAM
1) MODEL(Without LED PCB)
2) MODEL(With LED PCB)
3-1. WIRING DIAGRAM
- 4 -

1) MAIN PCB(Without LED PCB)
2) MAIN PCB(With LED PCB)
3-2. CIRCUIT DIAGRAM
- 5 -

4. Trouble Shooting Guide
☞ CAUTION ! Please surely unpluged power plug before repairing.
TROUBLE CAUSE CHECKING COUNTERMEASURE
Dust box is full with dust Dust Box (See 5-7) Remove the dust
Dust box is installed incorrectly Dust Box (See 5-7) Reinstall dust box
Filter in dust box is clogged with dust Dust Box (See 5-7) Cleaning→drying→using
Exhaust filter is clogged with dust Body (See 5-2) Cleaning→drying→using
Defective motor Motor (See 5-5) Replace the motor
Filter in the body assembly is clogged with dust Motor (See 5-5) Clean the filter
Clogging or tear in hose Hose (See 5-6 ) Remove obstacle or replace the hose
Telescopic pipe is clogged with large dust Remove obstacle
Brush nozzle or hose is clogged with large dust Brush (See 5-8) Remove obstacle
Dust Box (See 5-7) Remove dust
Hose (See 5-6 ) Remove obstacle
Pipe Remove obstacle
Brush (See 5-8 ) Remove obstacle
Breaking in power cord Replace power cord
Bad contacts in cord reel assembly Repair bad contact
Breaking of connections in cord reel assembly Repair Disconnection
Defective terminal connection of PCB in body PCB (See 5-1) Check terminal connection state
Defective PCB PCB (See 5-1) Replace PCB
Defective contact between PCB and motor/cord reel PCB (See 5-1) Repair bad contact
Motor out Motor (See 5-5) Replace Motor
Fuse disconnection Cord reel (See 5-4) Replace fuse
Broken reel sping of cord reel Cord reel (See 5-4) Replace Cord reel
Power cord is interwined Cord reel (See 5-4) Repair interwinement
Abrasion of the roller tire of cord reel Cord reel (See 5-4) Replace tire
Broken lever Cord reel (See 5-4) Replace lever
Lever spring broken away from cord reel bracket Cord reel (See 5-4) Repair lever spring
Bobbin is transformed Cord reel (See 5-4) Replace bobbin
Bracket is transformed Cord reel (See 5-4) Replace bracket
Lever is pushed by handle Cover (See 5-3) Repair handle
Power cord is not
wound up
Brush does not
rotate any direction
Power cord does
not stop at an
arbitraty position
Suction power
is weak
Motor does not stop
even if switch off
Dust full indicator is
on in the body
Vacuum cleaner
does not work
Dust full indicator will be executed when dust
box is filled up with dust or hose is clogged
with obstacle.
Cord reel (See 5-4)
Defective PCB PCB (See 5-1) Replace PCB
Clogged impurites in rotational part Brush (See 5-8) Remove impurites
Be careful when breaking up the cord reel, the reelspring may spring out of the spring cover.
CAUTION
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5. DISASSEMBLING AND TERATMENT
1) Remove dust box assembly(1) from body assembly(5).
2) Lift handle(2) up cover assembly(4) then unscrew 6 screws(3).
4) Remove cover assembly(4) from body assembly(5).
5) Remove cord reel assembl
y
(8), case motor assembl
y
(6) and motor assembl
y
(6) from bod
y
assembl
y
(5)
.
1) Check dust leakage between dust box(1) and body assembly(2) (Cause of defective motor).
2) Check inlet(9) of body assembly(2) clogged with dust (Cause of low suction power).
3) Check connection between wire connector(6) of cord reel and PCB (Cause of malfunction).
4) Check connection between wire connector(5) of motor and PCB (Cause of malfunction).
5) Check PCB circuit, ON/OFF switch(8) and rotary volume(7) (Cause of of malfunction).
5-1. CLEANER ASSEMBLY
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1) Unscrew 3 screw(11) and separate socket(10) from body(1).
2) Remove socket(10) then separate packing socket(9) from body(1).
3) Unscrew 1 screw(17) then separate guide(14) from body(1).
4) Assembling is reverse order of disassembly.
1) Check leakage between socket(10) and packing socket(9) (Cause of low suction power).
2) Check leakage between guide(14) and packing dust box(12) (Cause of low suction power).
3) Check impurities in roller(2,4) (Cause of roller malfunction).
4) Check leakage between safety assembly(15) and body(1) (Cause of low suction power).
5) Check filter assembly(19) clogged with dust.
(Cause of low suction power and overheating of cleaner body)
5-2. BODY ASSEMBLY
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1) Remove cover assembly from body assembly.
2) Remove handle(3) and cover top variable(4) from cover body(1).
3) Assembling is reverse order of disassembly.
1) Check handle(3) (Cause of defective cord rewinding).
2) Check button switch(5) (Cause of malfunction).
3) Check button variable(7) (Cause of malfunction).
5-3. COVER ASSEMBLY
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1) Separate cord reel assembly form body.
2) Separate plug of power cord(5) from bracket(11) and turn bobbin counterclockwise 4~5 times by holding
Unscrew 1 screw(19).
3) Separate bobbin(1) from bracket(11).
4) Unscrew 2 screws(15) then separate wires(13,14) from supporter terminal(12).
5) Unscrew 2 screws(10) then separate reel sping assembly(9).
6) Unscrew 1 screw(6) then separate hole terminal(2~4) from bobbin(1).
7) Assembling is reverse order of disassembly. Make reserved winding 5 revolutions of bobbin clockwise
then assemble plug of power cord to bracket.
1) Check connection between power cord and plug(5) (Cause of malfunction)
2) Check breaking of connection in power cord(5) (Cause of malfunction)
3) Check contact and abrasion between Y terminal(13,14) and ring terminal(3,4)
(Cause of malfunction)
4) Check connection between Y terminal(13,14) and wires (Cause of malfunction)
5) Check connection between terminal ring(3,4) and power cord.
6) Check spring(18) of lever (Cause of automatic rewinding by itself).
7) Check lever(16) (Cause of automatic rewinding by itself).
8) Check abrasion in tire(17) of stopper (Cause of automatic rewinding by itself).
9) Check reel spring assembly(9) is damaged (Cause of unwinding power cord).
10) Check power cord(5) is entangled in bobbin(1) (Cause of unwinding power cord).
11) Check fuse(13) (Cause of malfunction).
12) Check bobbin(1) is transformed (Cause of unwinding bobbin or noise)
5-4. CORDREEL ASSEMBLY
CAUTION
Be careful when disassembling the cord reel, the reelspring may spring
out of the spring cover.
- 10 -

1) Separate motor assembly from body assembly.
2) Assembling is reverse order of disassembly. Put motor wire in a hole of body before assembling.
1) Check motor(1) brush is damaged (Cause of malfunction, noise or smell).
2) Check connection between motor(1) and wire(2) (Cause of malfunction).
3) Check leakage between packing motor(3) and motor(1) (Cause of low suction power).
5-5. MOTOR ASSEMBLY
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1) Unscrew 1 screws(5) then separate cover adapter(4). Separate clamp(2).
2) Assembling is reverse order of disassembly
1) Check assembling states of knob(10) (Cause of air leakage)
2) Check connection between pipe hose(9) and holder(7) (Cause of breakaway).
3) Check connection between adapter pipe(1) and holder(7) (Cause of breakaway).
4) Check hose(6) is clogged with large dust (Cause of low suction and overheating).
5-6. HOSE ASSEMBLY
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1) Unscrew 4 screws(19) then separate cover middle(13), guide outlet(16) and filter assembly(20,21).
2) Unscrew 1 screw(6) then separate frame filter(5) from box dust(1).
3) Unscrew 2 screw(4) then separate guide inlet(3) from box dust(1).
3) Assembling is reverse order of disassembly
1) Check clamp(7) (Cause of breakaway of cover bottom)
2) Check inside between guide air inlet(3) and box dust(1) clogged with large object or not.
(Cause of low suction power)
3) Check assemble state (a air leak or not) of gasket(11) of cover bottom(10) and box dust(1)
(Cause of fine dust leakage)
4) Check frame filter(5) (Cause of malfuction of dust compression).
5) Check assemble state(a air leak or not) of cover middle(13) and guide air outlet(16).
(Cause of fine dust leakage)
6) Check clamp(14) (Cause of breakaway of dust box).
7) Check filter assembly(20,21) clogged with dust.
(Cause of low suction power and overheating of cleaner body).
5-7. DUST BOX ASSEMBLY
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1) Unscrew 4 screws(15) then separate body(13).
2) Assembling is reverse order of disassembly.
1) Check the opening of the duct(2), the neck brush(3) and the pipe brush(4) are clogged with
the dust (Cause of low suction power).
5-8. BRUSH PEDAL ASSEMBLY
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6. EXPLODED VIEW AND PARTS LIST
1) MODEL
6-1. CLEANER ASSEMBLY
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NO PART NAME PART CODE SPECS. Q'YT
1 BODY AS 3620433910 ASSY(RCC-740) BODY VARIABLE 1
2 MOTOR UNIVERSAL 396251180D 230V 1600W, V1J-PH27 1
3 HARNESS MOTOR 3622713150 TER+TER, 1015 AWG18, 290MM 1
4 PACKING MOTOR 3624012700 NR FOAM, 덕승 1600W 1
5 FRAME MOUNT MOTOR 3622207000 PP 1
6 ABSORBER FRAME DS 3620114400 NR 2
7 CASE MOTOR TOP AS 3621111300 ASSY(RCC-740) 1
8 PCB POWER CONTROL A
S
3624318200 RCC-740 230V 50HZ 1
9 SCREW TAPPING 7121401412 T2S PAN 4X14 MFZN BK 1
10 CORD REEL AS 3629509110 ASSY,RCC-740 230V 1
11 COVER BODY AS 3621452920 ASSY(RCC-740) BODY VARIABLE 1
12 SCREW TAPPING 7121402011 T2S PAN 4X20 MFZN 6
13 BUTTON VARIABLE 3626610600 ABS 1
14 BOX DUST AS 3620511200 ASSY(RCC-740) 1
15 HOSE AS 3623210600 RC-400(WIRELESS, EVA) 1
16 PIPE AS 36244114BH TELESCOPIC.SPC.T0.7 - PAINTING 1
17 BRUSH AS 362930910H ASSY(STEEL,GY004A,CHINA HOWE 1
18 NOZZLE CREVICE 3628100600 PP 1
19 BRUSH DUSTING 3629305000 PP+NYLON 1
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1) MODEL
6-2. BODY ASSEMBLY
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NO PART NAME PART CODE SPECS. Q'YT
1BODY 3620433800 PP 1
2ROLLER AS 3624701300 BRACKET & ROLLER (P.P) 1
3SCREW TAPPING 7128401212 T2S WAS 4X12 MFZN BK 1
4ROLLER BACK ASSY 3624710500 ASSY(PP+PVC) 2
5HOLDER BRUSH 3623005500 PP 1
6SCREW TAPPING 7121401412 T2S PAN 4X14 MFZN BK 1
7COVER SIDE DECO L 3621451100 ABS 1
8COVER SIDE DECO R 3621451200 ABS 1
9PACKING SOCKET 3624011300 NR 1
10 SOCKET 3629803400 PP 1
11 SCREW TAPPING 7121401412 T2S PAN 4X14 MFZN BK 3
12 PACKING DUST BOX 3624012400 PVC 1
13 FILTER INLET 3621915600 PU,BK,T=3.0,13X114 (BODY) 1
14 GUIDE DUCT 3622508000 PP 1
15 SAFETY AS 3625402000 ASSY 1
16 SCREW TAPPING 7121301011 T2S PAN 3X10 MFZN 2
17 SCREW TAPPING 7121401412 T2S PAN 4X14 MFZN BK 1
18 FILTER EXHUAST 3621915500 PE,BK,T=3.0,118.4X77.3 (BODY) 1
19 FILTER EXHAUST 3621915700 PE,WH,T=16.0,134X120.5(BODY) 1
20 GRILLE EXHAUST 3622402100 PP 1
21 BRUSH DUST BOX 3629313600 PP+식모 1
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1) MODEL
NO PART NAME PART CODE SPECS. Q'YT
1 MOTOR UNIVERSAL 396251180D 230V 1600W, V1J-PH27 1
2 HARNESS MOTOR 3622713150 TER+TER, 1015 AWG18, 290MM 1
3 PACKING MOTOR 3624012700 NR FOAM, 덕승 1600W 1
4 FRAME MOUNT MOTOR 3622207000 PP 1
6-3. MOTOR ASSEMBLY
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