Daewoo MC-5920SC User manual

Contents
MC-5920SC MODEL
SERVICE MANUAL
Product Specifications
Product Spec
Block Diagram
Alignment Procedure
Wiring Diagram
PCB Layouts
Circuit Schematic
Exploded View
Voltage Chart
Part List

>CD/CDR/CDRW/CDMP3/WMA Player
* PACKING :
> PACKED BY POLYBAG
>USB/SD Player
> 4 COLOUR GIFT BOX WITH
POLYFOAM 4pcs/CTN (TBC)
>PLL FM radio
> ENGLISH INSTRUCTION BOOK
>Alarm Clock function
* DIMENSION : (PRELIMINARY)
>Electronics CD door open / close
> UNIT : 215.9mm x 124.5mm (H) x 43.2 mm(w/o footstand)
x 68.6mm (w/ footstand)
>LCD display
>5 x Blue color LED for lighting effect (on/off)
>Aux in jack for any MP3 player
>Slim type switching power supply
2
>2W + 2W max power output
>Full function remote control
Product Specifications
* Product Features:

3
.onelpmaS10VlareneG-----)UC(.cepStcudorP
Model no:MC-5920SC
*HQHUDO&RQGLWRQ
5HI23 P:/RDGLQJ RKP6XSSO\ 9'&9$&+]
amroNtinUdohtemgnitseTnoitpircseDmetI
l
Limit 1# 2# 3# 4# 5#
SSAPSSAPSSAPSSAPSSAPSSAP%03-/01+yrettaBroF,%01-/+V032CAeporuEroFegatlovgnitarepo1
052<Autnerrucyrett
abkcehC,tupniCD/CAON,fforewoP)ybdnats(tnerrucybdnatS2   17 16 16
3 Clock accuracy sec/d +/-2 0.8 0.8 0.7 0.7 0.6
04-0CgedegnarerutarepmetnoitarepOegnareruta
repmeT4
5 Remote distance M>7
9999
6 SUBWOOFER OUT @784, 100HZ, 0dB / @FM Mod 75K , 100hZ Subwoofer loading @47K
o
mVrms >40     

4
.onelpmaS10VDC-----)UC(.cepStcudorP
Model no:MC-5920SC
*HQHUDO&RQGLWRQ
5HI23 P:/RDGLQJ RKP6XSSO\ 9'&9$&+]
amroNtinUdohtemgnitseTnoitpircseDmetI
l
Limit 1# 2# 3# 4# 5#
006>ANmuflah.lov-8,7krtA444@hctarcS1 1000 1000 1000 1000 1000 006>ANmuflah.lov41krtA444@stodkcalb2 800 800 800 800 800
57ANmuflah.lov-91,81krtA4
44@stnirpregnif3 75 75 75 75 75
tenibaChctacSoNflahlov,137-DCT@noitaivedlacitrev4 pass pass pass pass pass
ssapllaflahlov,217-DCT@yticirtnecc
e5 pass pass pass pass pass
218cesflahlov,487@COT6 10 10 11 11 10
218ces1-22krt,22-1krt,flahlov,487@emitsseccA7 910 9 8 8
5.1<ces2-1krt,flahlov,487@e
mitsseccAtrohS8 11111
15.0%retlifssapwolhtiw,fer=lov,zhk12krt,487@noitrotsid9 0.75  0.8 0.8 0.8
0454Bdfer=lov,zhk1,03krt,c
siDdradnatS@noitarepesR/L01 43 48 44 46 48
5405Bdfer=lov,zhk1,1krtcsiDdradnatS@oitarN/S11 54 56 56 57 56
12 Min Vol Hum AC input / Adaptor , @784 tk7, Min vol, use Adaptor mV NA <8 0.85  0.7 0.75 0.8
<35.0Bdfer=lov,zhk1,
1krtcsiDdradnatS@ecnalablennahc31 0000
/////ferferBdfer=lov,zhk1,73krtcsiDdradnatS@esnopserycneuqerf41
3-
/+0Bdzh001,63krtcsiDdradnatS@)talfQE( 0+0.5 0 +2 +2
3-/+0Bdzhk01,83krtcsiDdradnatS@ -2.5 -2.5 -2.5 0 0
2>ANWxamlov,zhk12krt,487@tupt
uorewopxaM51 2.89 2.72 2.72 2.89 2.89
CDRW
ssapllaFLAHLOV,51dna1KRTW280WDCT@noitcelferhgihWR61 pass pass pass pass pass
MP3
023-23023-23023-23023-23023-23023-
23spbKcsidtset3pMdradnatS@etartib3PM71
ssapssapssapssapssapSSAPspbKcsidtset3PMRBVdnatS@etartibRBV3PM81
023-23023-23023-23023-23023-23023-23spbKcsidtsetAMWdradnatS@etartibAMW91

5
.onelpmaS10VMF-oidaR----)UC(.cepStcudorP
Model no:MC-5920SC
*HQHUDO&RQGLWRQ)0'HY.K]02' .K]/730K]0730K]+73073
5HI23 P:/RDGLQJ RKP6XSSO\ 9'&9$&+]
amroNtinUdohtemgnitseTnoitpircseDmetI l Limit 1# 2# 3# 4# 5#
1 Frequency range Low Mhz 87.5 +/-0.5 87.5 87.5 87.5 87.5 87.5
High Mhz 108 +/-0.5 108 108 108 108 108
2 Frequency step Khz 50Khz 00 000 3 30dB s/n u@MTP, vol@ref , #sig-O&F@MTP>s/n@max dbuv 20 26 9/9/8 8/8/9 8/8/8 10/10/10 8/9/10
4 Dial Calibration All points on Dial printing Mhz +/-0.7 00000
5 -3dB Freq. Response sig-F@MTP 60dBuV, Preamp 75us(USA),vol=ref, ^sig- AF=A >o/p v 3 dB, v sig-AF=B>Ohz 100 200 65  72 67 63
Frequency response = A and B hz 12k 8k 16k 13 13k 15k 15k
6 min. volume Hum AC supply / Adaptor, u@MTP , sig@MTP , 60dBuv mv NA < 8 0.75 0.6 0.55 0.6 0.6
7 S/N ratio (Mono) u@MTP, vol@ref, sig@MTP 60dBuv db 43 37 42  46 40 42
8 distortion@ 22.5Kc u@MTP , sig-F@MTP 1mV, #vol=ref,#distortion meter=1khz>THD=min. %1 2 0.65  0.7 0.7 0.64
9 Stereo THD With A weighted filter, u@MTP, sig@MTP, 60dBuV % NA 6< 0.65  0.7 0.95 0.85
10 Max output Power u@MTP , sig-F@MTP 60dBuv, 1khz, ^ dev, vol=max>O/P=A, power =AxA/speaker ohm W NA >2 2.25  2.56 2.89 2.72
11 Auto search accuracy Full frequency range, sig-O@25dBuV and 60dBuV step +/-1 0
12 Auto search sens sig@LTP , mod 22.5k , auto search from lower OR upper side ,Repeat test for HTP ,MTP dbuv 24 30 18/18/18 18/18/18 17/18/18 17/18/19 17/18/18
13 Stereo seperation With A weighted filter, sig@MTP, 60dBuV dB 28 20 34 35 34 37 37
14 Stereo indicatior sense u@MTP, sig-F@MTP, ^sig-O=A> Stereo indicator light ON dBuv 24 30 14 13 15 14 21
Result

6
.onelpmaS10VMA-oidaR----)UC(.cepStcudorP
Model no:MC-5920SC
*HQHUDO&RQGLWRQ$002' .K]/73NK]073NK]+73NK]
5HI23 P:/RDGLQJ RKP6XSSO\ 9'&9$&+] Result
amroNtinUdohtemgnitseTnoitpircseDmetI l Limit 1# 2# 3# 4# 5#
1 Frequency range Sig-O@80dbuv/m Vol@ref khz 522 +/-5 522 522 522 522 522
khz 1620 +/-5 1620 1620 1620 1620 1620
2 Max. sens u@LTP , vol@max , ^sig-O> O/P=ref dB/M 54 60 58 59 56 57 56
3 20dB s/n u@LTP , vol@ref , #sig-F@LTP>s/n@max,=> ^sig-O=A > O/P = 20db s/n dB/M 62 68 57/58/56 58/56/57 60/59/56 59/58/58 58/57/55
4 Dial Calibration check all points on dial scale Khz +/-40 +/-80 00000
5 Distortion u@MTP , sig@MTP ,94dB/M, #vol>o/p=ref % 1 2 1.1 1.1 1.1 1 1.2
6 Max. O/P power u@MTP, sig@MTP, Mod ^, 94dB/M, ^vol=max W NA >2 2.89 2.89 2.89 3.06 2.89
7 AGC u@MTP, sig@MTP, mod 30%,94dB/M, vol = ref, v sig-O= x > O/P v =ref - 10dB , AGC = db 45 40 55 57 56 57 54
8 Frequency response u@MTP ,sig@MTP,94dB/M, vol =ref O/P, ^sig-AF =A> O/P v 3dB, v sig-F=B> O/P v 3dBhz 100 200 74 68 72 71 79
High Khz 2 1.8 1.9 2.0 2 2 2
9 Min. Vol Hum AC I/P / Adaptor , u@MTP, sig@MTP,100dB/M, Vol=0 mV NA <8 0.65 0.65 0.55 0.9 0.65
 S/N u@MTp, sig@MTP, 94dB/M, Vol=ref O/P dB 35 30 42  43 42 42
11 Auto search accuracy Full frequency range, sig-O@74dB/M and 94dB/M step +/-1 0 0 
12 Auto search sens sig@LTP , auto search from lower OR upper side ,Repeat test for HTP ,MTP dB/M 68 76 56/58/59 60/60/61 60/59/61 61/59/62 61/58/60

7
.onelpmaS10V1oiduA-----)UC(.cepStcudorP
Model no:MC-5920SC
*HQHUDO&RQGLWRQ
5HI23 P:/RDGLQJ RKP6XSSO\ 9'&9$&+]
amroNtinUdohtemgnitseTnoitpircseDmetI
l
Limit 1# 2# 3# 4# 5#
LINE IN
8<Vm0=loV,tupniCAtAmuH1 0.65 0.6 0.55 0.6 0.6
5304Bdzhk1,smrVm003NIENILnoitarepeslennahC2 39 42 41 39 41
3 -3dB frequency response LINE IN 300mVrms, set 1khz =0dB, vol=ref
Low End Hz 100 150 60  58 48 44
High End Hz 16K 15K 32k 33k 34k 37k 38k
2<1%fer=loV,zhk1,smr
Vm003NIENILnoitrotsiD4 0.56  0.6 0.55 0.52
<3ANBdfer=lov,zhk1,Vm003NIENILecnalablennahc5 0.5  0.4 0 0
2>ANWxam=loV,zhk1,smrVm006NI
ENILrewoptuptuOxaM6     
Earphone Output
003054VMxamloV,zhk1K57=domMF/2krT,487@rewoptuptuO7 400 390 380 400 400
<25.0Bdfer=lov,zhk1K57domMF
/zhk1,2KRT,487@ecnalablennahc8 0000
9 Hum At AC input / Adaptor , @784 , TRK2, Pause, Vol=max / @Fm 1khz tone mVrms NA <1 0.2  0.1 0.15 0.18
USB/SD
8<ANVm0=loV,tupniCAtAmuH01 0.82 0.7 0.65 0.7 0.7
5304Bdzhk1,Bd0LnoitarepeslennahC11 41 43 42 48 50
12 -3dB frequency response set 1khz =0dB, vol=ref
100Hz dB +/-3 +1 +0.5 -1 1.5 2
10KHz dB +/-3 0 -2.5 -2.5 0 0
2<1%fer=loV,krtbdozhk1noitrotsiD31 0.55  0.75 0.75 0.72 2>ANWxam=loVbdozhk1rewoptuptuOxaM41     
<3ANBdfer=lov,zhk1,B
d0ecnalablennahc51 0000

Block Diagram
8

Wiring Diagram
9

Main PCB (Top Layer)
PCB Layouts
10

11
Main PCB (Bottom Layer)

Clock PCB (Top Layer)
12
Clock PCB (Bottom Layer)
9A-RESET PCB (TopLayer) 9A-RESET PCB (Bottom Layer)

)reyaLmottoB(BCPKCAJ)reyaLpoT(BCPKCAJ
13
BCPKCAJBSU/DSBCPKCAJBSU/DS )reyaLmottoB()reyaLpoT(

14
8A-LED LIGHT PCB (R) (Bottom Layer)
8A-LED LIGHT PCB (L) (Top Layer)
8A-LED LIGHT PCB (L) (Bottom Layer)
8A-LED LIGHT PCB (L) (Top Layer)

15
Remote PCB (Bottom Layer)
BCPYEKA6)reyaLpoT(BCPYEKA6 (Bottom Layer)
Remote PCB (Top Layer)

16
SWITCH PCB (R) (Bottom Layer)
SWITCH PCB (R) (Top Layer)
SWITCH PCB (L) (Bottom Layer)
SWITCH PCB (L) (Top Layer)

17
CD PCB (Top Layer)
CD PCB (Bottom Layer)

18
CD/MP3 Circuit Schematic

MAIN Circuit Schematic
19

20
(REMOTE CONTROL) Circuit Diagram