Daewoo EKE User manual

Service Manual
MiniComponentSoundSystem
9CD8308000
May. 2009

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SAFETY PRECAUTIONS ......................................................................................... 1
TROUBLE SHOOTING GUIDE ................................................................................ 2
EXPLODED VIEW AND MECHANICAL PARTS LIST ............................................. 3
WIRING DIAGRAM ................................................................................................... 4
BLOCK DIAGRAM .................................................................................................... 5
SCHEMATIC DIAGRAM ........................................................................................... 6
FRONT Section
FUNCTION Section
MP3/CD Section
AMP Section
POWER Section
P.C.B PATTERN LAYOUT .........................................................................................7
FRONT Section
FUNCTION Section
MP3/CD Section
AMP Section
POWER Section
APPENDIX-ELECTRICAL PART LIST ................................................................... 8
TableofContents
Mini component sound system
NC-8809E/NC-8809EK

S fety Prec utions
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WARNING : TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION : TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS
INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
PRESENCE OF UNINSULTED "DANGEROUS VOLTAGE"
WITHIN THE PRODUCT S ENCLOSURE THAT MAY BE
SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK TO PERSONS.
THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE
(SERVICING) INSTRUCTIONS IN THE LITERATURE
ACCOMPANYING THE APPLIANCE.
CAUTION
TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS POLARIZED AC
PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET
UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE
EXPOSURE.
LASER SAFETY
THIS UNIT EMPLOYS A LASER. ONLY QUALIFIED SERVICE PERSONNEL
SHOULD REMOVE THE COVER OR ATTEMPT TO SERVICE THIS DEVICE
DUE TO POSSIBLE EYE INJURY.
CAUTION : USE OF ANY CONTROLS, ADJUSTMENTS, OR PROCEDURES
OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS
RADIATION EXPOSURE.
CAUTION : TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT, FULLY INSERT.
ATTENTION : POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE
LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPON-
DANTE DE LA PRISE ET POUSSER JUSQU AU FOND.
Important Safety Instructions
- All the safety and operating instructions should be read before
the appliance is operated.
- The safety and operating instructions should be retained for
future reference.
- All warnings on the appliance and in the operating instructions
should be adhered to.
- All operating and use instructions should be followed.
1. Water and Moisture - The appliance should not be used near
water - for example, near a bathtub, washbowl, kitchen sink,
laundry tub, in a wet basement, or near a swimming pool,
and the like.
2. Carts and Stands - The appliance
should be used only with a cart or
stand that is recommended by th
manufacturer.
3. An appliance and cart combination
should be moved with care. Quick
stops, excessive force, and uneven
surfaces may cause the appliance
and cart combination to overturn.
4. Wall or Ceiling Mounting - The appli-
ance should be mounted to a wall or
ceiling only as recommended by the manufacturer.
5. Ventilation - The appliance should be situated so that its
location or position does not interfere with its proper
ventilation. For example, the appliance should not be situated
on a bed, sofa, rug, or similar surface that may block the
ventilation openings; or, placed in a built-in installation, such
as a bookcase or cabinet that may impede the flow of air
through the ventilation openings.
6. Heat - The appliance should be situated away from heat
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
7. Power Sources - The appliance should be connected to a
power supply only of the type described in the operating
instructions or as marked on the appliance.
8. Grounding or Polarization - The precautions that should be
taken so that the grounding or polarization means of an
appliance is not defeated.
9. Power - Cord Protection - Power-supply cords should be
routed so that they are not likely to be walked on or pinched
by items placed upon or against them, paying particular
attention to cords at plugs, convenience receptacles, and the
point where they exit from the appliance.
10.Protective Attachment Plug - If the appliance is equipped with
an attachment plug having overload protection. This is a
safety feature. See Instruction Manual for replacement or
resetting of protective device. If replacement of the plug is
required, be sure the service technician has used a
replacement plug specified by the manufacturer that has the
same overload protection as the original plug.
11.Cleaning - The appliance should be cleaned only as
recommended by the manufacturer.
12.Power Lines - An outdoor antenna should be located away
from power lines.
CAUTION
RISK OF ELECTRIC SHOCKS
DO NOT OPEN
PORTABLE CART
Figure 2

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S fety Prec utions
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13.Outdoor Antenna Grounding - If an outside antenna is
connected to the receiver be sure the antenna system is
grounded so as to provide some protection against voltage
surges and built-up static charges. Article 810 of the National
Electrical Code, ANSI/NFPA 70, provides information with
regard to proper grounding of the mast and supporting
structure, grounding of the lead-in wire to an antenna-dis
charge unit, size of grounding conductors,location of antenna-
discharge unit, connection to grounding electrodes and
requirements for the grounding electrode. See Figure 1.
14.Non-use Periods - The power cord of the appliance should be
unplugged from the outlet when left unused for a long period
of time.
15.Object and Liquid Entry - Care should be taken so that objects
do not fall and liquids are not spilled into the enclosure through
openings.
16.Damage Requiring Service - The appliance should be
serviced by qualified service personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have fallen, or liquid has been spilled into the
appliance; or
c) The appliance has been exposed to rain; or
d) The appliance does not appear to operate normally or
exhibits a marked change in performance; or
e) The appliance has been dropped, or the enclosure
damaged.
17.Servicing - The user should not attempt to service the
appliance beyond that described in the operating instructions.
All other servicing should be referred to qualified service
personnel.
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
ANTENNA LEAD
IN WIRE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250 PART H)
GROUND CLAMP
ELECTRIC
SERVICE
EQUIPMENT
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
EXAMPLE OF ANTENNA
GROUNDING
NEC - NATIONAL ELECTRICAL CODE

TroubleShootingGuide
Check the circuit around
protect pin.
Still shut-down?
Then divide protect pin.
Does triangle wave
flow to S1A0071 3pin??
Refer to EX1.
Check the circuit
that generates
triangle wave
connected with
S1A0071 3pin.
And repair.
Refer to EX2.
Check the circuit
connected with
S1A0071 4PIN.
And repair.
Refer to EX5.
Normal PWM waveform at
S1A0051 10,11,14,15pin?
Refer to EX12.
Relpace components connected
with S1A0071 6,7pin 8,9pin
16,17pin 18,19pin.
Refer to E X13.
Normal PWM waveform
at FET s drain?
Refer to EX1.
Change components
connected with
S1A0071 6,7pin
8,9pin 16,17pin
18,19pin.
Replace divided protect
pin / PASS
AMP Flow Chart-No Output Signal
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TroubleShootingGuide
Check the circuit
around protect pin.
Still shut-down?
Then divide protect pin.
Check circuit that
generates triangle
wave connected
with S1A0071 3pin
And repair.
Refer to EX2.
Check the circuit
connected with
S1A0071 4PIN
And repair
Refer to EX5.
Does Triangle wave
flow to S1A0071 3pin?
Refer to EX1.
S1A0071 6,7pin 8,9pin
16,17pin 18,19pin short.
100ohm open
Refer to EX10.
Normal PWM waveform at
S1A0051 10,11,14,15pin?
Refer to EX12.
Replace components connected
with S1A0071 6,7pin 8,9pin
16,17pin 18,19pin
Refer to EX13.
Normal PWM waveform
at FET s drain?
Refer to EX1.
Change components
connected with
S1A0071 6,7pin
8,9pin 16,17pin
18,19pin
AMP Flow Chart-Abnormal Output Signal
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TroubleShootingGuide
AMP FlowChart-Test PointandExpectedResults(Ex1, 2)
AMP Flow Chart-Test Point and Expected Results(Ex3)
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TroubleShootingGuide
AMP Flow Chart-Test Point and Expected Results(Ex4, 5)
AMP Flow Chart-Test Point and Expected Results(Ex6)
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TroubleShootingGuide
AMP FlowChart-Test Point and Expected Results(Ex7, 8)
AMP FlowChart-Test Point and Expected Results(Ex7, 8)
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TroubleShootingGuide
AMP Flow Chart-Test Point and Expected Results(Ex9)
AMP FlowChart-Test Point and Expected Results(Ex10,13)
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TroubleShootingGuide
AMP Flow Chart-Test Point and Expected Results(Ex11)
AMP Flow Chart
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TroubleShootingGuide
MP3/CD Section
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CD open and disc insertion Refer to 2
Spindle motor rotation
Pick-up unit return(outside >>
inside)
Laser diode on
Focusing operation
Read in operation and auto
adjustment
CD play on
Refer to 3
Refer to 4
Refer to 5
Refer to 6
CD close and CD on
Refer to 1
AC cord in CD start

TroubleShootingGuide
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MP3/CD Section
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1. Pick-up unit return and roulette rotation
2. CD open and disc insert
3. Laser diode on
STOP PLAY
C 0V 1.8V
B 3.3V 2.5V
E 3.3V 3.2V
(HQ506)
4. Focusing operation
CD open and
disc insertion
AC cord in
Initializing CD no
1. Check +9V(CN509 of 4pin).
2. Check +3.3V (IC501 of 59pin,80pin,109pin,124pin).
3. Check XC501:16.9344MHZ
4. Check (IC503 BA5927FM 21pin,22pin)SP- 4.3V , SP+ 4.8V
5. Check SPDO +1.9V (IC501 LC786951 41pin)
6. Check (IC503 BA5927FM 19pin, 20pin)SL- 4.5V,SL+ 4.7V.
7. Check CD Board(Around IC solder short,cold soldering )
CD open and disc
insertion
Yes
Yes
Yes
CD close and CD on
Laser diode on
Yes
Focusing operation
no 1. Check +1.8V LD on(HQ506 collector)
2. Check +2.5V (HQ506 base pin) >>>in case of play
B
E
C
Focusing
operation
Yes
no
1. Check (IC503 BA5927FM 1pin, 2pin)
1pin 3.9V >> 4.3V, 2pin 4.5V >> 4.9V >>> in case
of play
2. Check +1.95V(IC503 BA5927FM 6pin)
1. Check +9V (IC503 BA5927FM 7,8pin)
2. Check +3V (IC503 BA5927FM 31pin)
no
1.Check +3V (IC503 BA5927FM 30pin)
no

TroubleShootingGuide
MP3/CD Section
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5. Spindle motor rotation
6. Read in operation
RF:0.8V ~ 1.2V
Spindle motor
rotation
Yes
no 1. Check SPDO +1.9V(IC501 LC786951 41pin) >>> in
case of play。
2. Check IC503 BA5927FM 20pin SL+ 4.7V,
19pin SL- 4.5V.21pin SP- 4.3V, 22pin SP+ 4.8V。
Read in
operation no 1.Check RFO eye pattern 0.8V ~ 1.2V (IC501 LC786951
8pin)
Read in CD/MP3
disc
Yes
no
Yes
Read in USB file
Yes
no 1. Check +3.3V(IC502 LC87F1HC8A 3pin, 8pin,19pin,39pin)
2. Check XC502:12MHZ
3. Check CD Board(IC504 Around pin solder short,
cold soldering )
1. Check +9V(CN509 of 4pin).
2. Check +3.3V (IC501 of 59pin,80pin,109pin,124pin).
3. Check XC501:16.9344MHZ
4. Check (IC503 BA5927FM 21pin,22pin)SP- 4.3V , SP+ 4.8V
5. Check SPDO +1.9V (IC501 LC786951 41pin)
6. Check (IC503 BA5927FM 19pin, 20pin)SL- 4.5V,SL+ 4.7V.
7. Check CD Board(Around IC solder short,cold soldering )
USB Encoding no
1. Check IC506 (NJM4558) 4pin(-9V),8pin(9V).
2. Check IC506(NJM4558) 3pin,5pin input signal.
3. Check IC506(NJM4558) 1pin,7pin output signal.
4. Check IC505(AK5358) 6pin(5V),7pin(3V).
5. Check IC505(AK5358) 1pin,2pin input signal.
6. Check IC504(A2V64S40CTP) Around pin solder short,
cold soldering )

TroubleShootingGuide
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Front Section
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Yes
no 1.Check CW703: 2pin,4pin,8pin,9pin,10pin,
11pin,12pin,13pin.
2.Check IC701: 5pin,7pin,71pin,81pin,94pin,
95pin,96pin,97pin.
no
Yes
1.Check IC701: 24pin,25pin,26pin.
2.Check IC701: 85pin,87pin.
Yes
no
1.Check HQ723,HQ724
2.Check LD703,LD704,LD705,LD706,LD713,
LD714,LD715,LD716,LD717,LD718,LD719,
LD720.
3.Check HQ711,HQ712,HQ713,HQ714,HQ715,
HQ716.
4. Check IC701: 73pin,74pin,75pin,76pin,77pin,
78pin.
no
1.Check CN701 of 7 pin: 4V.
2.Check IC701 of VCC 17 pin,72 pin,90 pin
voltage:3.3V.
3.Check -VPP voltage:-31.9(IC701 of 51pin).
4.Check between FIL1 and FIL2 AC
voltage:5.6V(FD701 of 1 pin and 33 pin).
5.Check XC701: 12MHZ.
Yes
no
1.Check CW702:16pin,17pin, 18pin,19pin,20pin.
2.Check CW702:13pin,14pin(only RDS).
3.Check IC704 VCC 14pin voltage: 3.3V.
4.Check IC704: 1pin,4pin,10pin,11pin.
5.Check IC701:3pin,64pin,66pin,85pin,86pin.
6.Check IC701: 27pin,65pin(only RDS）
AC cord in
VFD display
Yes
CD initial
Function command
Tuner function
Function LED
Yes

TroubleShootingGuide
Front Section
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Yes
no
1. Check J352.
2. Check VR352 Mic Volume Location.
3. Check IC352 (NJM4558) Power -9V(4pin) ,
+9V (8 Pin)
4. Check IC352 (NJM4558) output (1, 7 Pin)signal.
no
1.Check CW702: 1pin,3pin input signal.
2.Check IC705: 3pin,5pin input signal.
3.Check IC705: 4pin VEE(-9V),8pin VCC(9V)
4.Check IC705: 1pin,7pin output signal.
5.Check J701.
MIC function
Tuner/CD/AUX /GAME
phones sound

TroubleShootingGuide
POWER &AUDIO &AMP Section
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1.Check F903,F904
2.Check Tuner/CD/AUX /GAME input signal
3. Check IC601(BD3401) of 20 pin voltage:
5.1V and 22 pin voltage:5.0V
4.Check IC601(BD3401)32, 33 pin Output
Signal.
5.Check IC451(NJM4558) Vcc (4, 8 Pin)
6.Check IC AUDIO PROCESSOR:
IC801(S1A0071_401).
7. Check IC FET DRIVER:IC802(S1A0051X)
8.Check J801.
AC cord in
VFD display(stand_by) no
1.Check PT901
2.Check PT992(only PSM)
3.IC991 2pin and 4pin voltage:4V
4.Check F902
5.Check RF901,RF902
6.Check HQ905 emitter voltage:-31.9V
7.Check between FIL1 and FIL2
voltage: normal AC 5.6V
8. Check CW901 of 2/6/7/8 pin.
Yes
Power on no 1.Check CW901 of 1 pin voltage:3.0V .
2.Check IC903 of 2 pin voltage:9V.
no
Tuner/CD/AUX /GAME
speaker sound
Yes
Yes

ExplodedViewandMechanicalParts List
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ExplodedViewandMechanicalParts List
NO PARTS NAME CODE NO. DESCRIPTIONS Q'TY
1 PANEL FRONT 9CD0317800 HIPS, SPRAY 1
2 COVER DECK 9CD0420900 HIPS, SPRAY 1
3 DOOR CD 9CD1817600 HIPS, SPRAY 1
4 WINDOW FLT 9CD1625500 ACRYL, SMOG 1
5 KNOB VOLUME 9CD1362000 HIPS, SPRAY 1
6 DECO VOLUME 9CD1012100 ACRYL 1
7 KNOB JOG 9CD1362100 HIPS,SPRAY 1
8 DECO JOG 9CD1012200 ACRYL 1
9 KNOB REC 9CD1362200 HIPS, SPRAY 1
10 KNOB GAME 9CD1362600 SPRAY 1
11 KNOB SURR 9CD1362700 SPRAY 1
12 LENS FUNCTION 9CD1625600 ACRYL 1
13 KNOB DISC 9CD1361900 HIPS,SPRAY 1
14 KNOB POWER 9CD1361800 HIPS,SPRAY 1
15 DECO PRESET L 9CD10124L0 HIPS, SPRAY 1
16 KNOB PRESET L 9CD13625L0 HIPS, SPRAY 1
17 DECO PRESET R 9CD10124R0 HIPS, SPRAY 1
18 KNOB PRESET R 9CD13625R0 HIPS, SPRAY 1
19 KNOB MIC 9CD1362400 HIPS, SPRAY 1
1SPIH0048052DC9EMULOVEDIUG02
1LA0035051DC9DNARBEGDAB12
2SBA0092142DC9EDISTKRB22
23 CUSHION FOOT 9CD4207700 URETHANE D10*4.0T 2
24 CUSHION VFD 9CD4210001 EVA T4.5 2
25 CD DECK MECHA 9CD6014500 DCC-02DA11（DA11VZ）1
1SPIH0069040DC9POTREVOC62
1SPIH1L77140DC9"L"EDISREVOC72
1SPIH1R77140DC9"R"EDISREVOC82
29 CHASSIS BOTTOM 9CD0612621 SECC T1.0 1
30 BRACKET PCB D 9CD2417801 SECC T1.0 1
31 HEATSINK PW 9CD4409710 AL H=47 1
1LA0094144DC9HC2.2PMAKNISTAEH23
33 CHASSIS BACK 9CD0612504 SECC T0.8 1
2009.05.25
OPTIONAL
M-7. EXPLODED VIEW PARTS LIST
MODEL : NC-8809EK
NO PARTS NAME CODE NO. DESCRIPTIONS Q'TY
1CP0076190DC9PMABCPETALP43
35 RUBBER FOOT 9CD0801000 RUBBER 2
1LA0018044DC9CIKNISTAEH63
37 FRAME BOTTOM 9CD0607800 SECC T1.0
S1 SCREW TAPTITE 7173261011 TT2 BIN 2.6*10 MFZN 21
S2 SCREW TAPTITE 7173301011 TT2 BIN 3*10 MFZN 24
S3 SCREW TAPTITE 7173301012 TT2 BIN 3*10 BK 12
S4 SCREW TAPTITE 7173301212 TT2 BIN 3*12 BK 4
S5 SCREW TAPTITE 7173300811 TT2 BIN 3*8 MFZN 12
S6 SCREW TAPTITE 7173400611 TT2 BIN 4*6 MFZN 4
S7 SCREW TAPTITE 7173300611 TT2 BIN 3*6 MFZN 2
S8 WASHER SCREW 9CD3102403 TT2 BIN 3*10 WAS + D8 9
1TNORFBCP1P
1BSUBCP2P
1OEDIVBCP3P
1DCBCP4P
1NOITCNUFBCP5P
1REWOPBCP6P
1PMABCP7P
1DFV1E
1KCAJOEDIV2E
1GOJREDOCNE3E
1ELUDOMRENUT4E
1ROTCELESEGATLOV5E

WiringDiagram
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A3
DCB
A
3
4
1
2
ABCD
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2
3
4
A3
DCB
A
3
4
1
2
ABCD
1
2
3
4