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
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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
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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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