Daewoo DG-K301 Service Manual
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Daewoo DG-K301 Service Manual

Daewoo DG-K301 Service Manual

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Service Manual

DVD PLAYER

MODEL:
DG-K301
✔ Caution :
In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the latest
parts information,please refer to PPL(Parts Price List) in Service
Information Center.
July. 2007

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Summary of Contents for Daewoo DG-K301

  • Page 1: Dvd Player

    Service Manual DVD PLAYER MODEL: DG-K301 ✔ Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS SPECIFICATIONS.........................2 CIRCUIT OPERATIONAL DESCRIPTION..................3 VOLTAGE CHARTS........................6 CIRCUIT DIAGRAM........................8 PCB CIRCUIT BOARD.........................24 WAVEFORMS..........................27 TROUBLE SHOOTING.........................36 INSTRUMENT DISASSEMBLY......................4 PARTLIST...........................42...

  • Page 3: Specifications

    SPECIFICATIONS Laser wavelength 650nm Video PAL/AUTO/NTSC Frequency response 20Hz ~ 20KHz (±dB) Signal/noise ratio ≥90dB Channel separation ≥85dB ( KHz) Dynamic range ≥80dB ( KHz) output level : 2.0 + 0/-0.2Vrms Analog (Load impedance : ,0KΩ) Output Audio output level : 0.5 ±0.Vp-p Digital (Load impedance : 75Ω) output level : .0 ±0.Vp-p...

  • Page 4: Circuit Operational Description

    CIRCUIT OPERATIONAL DESCRIPTION 1. DVD Module ) Summary DVD One Board consists of: Loader part that reads and transmits audio and video data saved at Optic Discs (DVD, CD-DA, VCD, CD-R) to MPEG Decoder part; MPEG Decoder part, which, by decoding and encoding data received from the Loader, produces analog signals; and u-Com that controls the overall system including the loader and MPEG decoder.
  • Page 5 CIRCUIT OPERATIONAL DESCRIPTION CIRCUIT OPERATIONAL DESCRIPTION 3) Loader Part The loader which read the data of audio/video from optic disc and transfer them to MPEG decoder can be divided into Deck total DVD assay(in a short term, Mecha) and Servo. Mecha mounts with the optical pick-up which allows reading the signal of a disc using laser beam and makes it operates and consists of the deck mechanism which allows loading a disc and reading the data.
  • Page 6 CIRCUIT OPERATIONAL DESCRIPTION 2. Overall Block Diagram--S5L5008(2CH) ) 2CH CVBS CVBS...
  • Page 7 CIRCUIT OPERATIONAL DESCRIPTION 3. MPEG Decoder The signal read from DVD disc is output into the RF signal and Servo related signal through the RF IC and they are input into the MPEG decoder and processed the MPEG decoding and divided into video/audio signal. The video signal is output into the analog audio signal through the built-in encoder block and also the audio signal into the audio DAC through the audio decoder block.
  • Page 8 CIRCUIT OPERATIONAL DESCRIPTION 16Mb SDR 4Mb Flash MIU/Arbiter CCIR656 Interface 2D Graphic ARM946E-S Engine(GA) (processor core) NTSC Video OSD/Mixer /PAL 5-DAC Motor/ Encoder Servo/DP I-cache Driver D-cache Video Output Video Processor ( Scaling ) CalmADM Sub-picture ( Audio DSP ) Decoder MPEG 12KB...
  • Page 9 CIRCUIT OPERATIONAL DESCRIPTION Deck Mechanism Display S5L5008X(DVDP SOC) Key Display CPU + RF + Servo/DSP + Front VFD Display 2-Ch DAC A/V Decoder + DRAM (SPI Interface) 5.1-Ch Audio SDRAM Flash ROM Peripherals S5L5008 System Diagram(Servo Application) DISC VREF(1.65V) Pick Up SLDPWM Motor Control LDODVD...
  • Page 10 CIRCUIT OPERATIONAL DESCRIPTION FDA11(P5.1) MPEI FDA10(P5.0) ABCDO FDA9(P4.7) MPEO FDA8(P4.6) FDA18(P6.0) FDA17(P5.7) VDDSVO33A FDA7(P4.5) PDDVD FDA6(P4.4) LDOCD VDDP0 LDODVD VSSP0 FDA5(P4.3) FDA4(P4.2) FDA3(P4.1) FDA2(P4.0) FDA1(P3.7) MDA4 VSSP1 MDA3 VDDC0 VSSC0 MIRRI MDA5 ABCDI MDA2 RFSUM MDA6 VSSEQ33A MDA1 RFAGC0 VDDP1 AGCP S5L5008 MDA7...
  • Page 11 CIRCUIT OPERATIONAL DESCRIPTION 2) Flash Memory : ES29LV800DB-70TG Description The ES29LV800 is a 8 megabit, 3.0 volt-only flash memory device, organized as M x 8 bits (Byte mode) or 52K x 6 bits (Word mode) which is configurable by BYTE#. Four boot sectors and fifteen main sectors are provided : 6Kbytes x , 8Kbytes x 2, 32Kbytes x  and 64Kbytes x 5.
  • Page 12 CIRCUIT OPERATIONAL DESCRIPTION RY/BY# Timer/ Vcc Detector DQ0-DQ15(A-1) Counter Analog Bias Generator Input/Output Buffers Command Write Register State Machine RESET# Data Latch/ Sense Amps Sector Switches Y-Decoder Y-Decoder A<0:18> Cell Array X-Decoder Chip Enable Output Enable Logic BYTE# FLASH ES29LV800 Block Diagram BYTE# DQ15/A-1 48-Pin Standard TSOP...
  • Page 13 CIRCUIT OPERATIONAL DESCRIPTION 3) SDRAM : MMSD46T26-O SDROM MMSD46T26-O Pin Assignments...
  • Page 14 CIRCUIT OPERATIONAL DESCRIPTION 4) AMPLIFIERS : AZ4558CM-E Description The AZ4558 consists of two high performance operational amplifiers. The IC features high gain, high input resistance, excellent channel separation, wide range of operating voltage and internal frequency compensation. It can work with ± 8V maximum power supply voltage.
  • Page 15 CIRCUIT OPERATIONAL DESCRIPTION 5) Motor Drive IC: AT5669 The AT5669 is a 5-channel BTL driver IC. Two of them can drive DC motors and two can drive coils, such as the focus and tracking actuators of a CD-ROM/DVD-ROM/DVD-Player system It also built-in one channel bi-direction DC motor driver for Tray.
  • Page 16 CIRCUIT OPERATIONAL DESCRIPTION Pin Descriptions Pin No. Pin name Function CH(Focus coil) input Linear Regulator 3V3 driver output Linear Regulator 2 feedback input CH2(Sled driver) input Linear Regulator 3V3 input(Metal Option possible for other voltage from 2.5V~4V) CH5 forward input CH5 reverse input VCC Power Supply ...

  • Page 17: Voltage Charts

    VOLTAGE CHARTS U SM8002C Voltage 0.372V 0.76V .734V .742V 20.2V .965V U2 EL87 Voltage 0.483V 3.88V 0.237V 2.637V U3 AZ43BZ-ATRE Voltage 2.476V 3.82V IC0 ES29LV800D Voltage Voltage Voltage Voltage Voltage Voltage PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY 0.8V 0.8V 10 0V 19 2.8V 2.7V 28 3.2V 3.2V 37 3.26V 3.26V 46 0V 3.0V 11 3.26V 3.27V 20 2.5V 2.3V 29 2.9V 3V...
  • Page 18 VOLTAGE CHARTS IC304 AZ4558CM-E Voltage Voltage Voltage Voltage PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY .7V .7V 6 IC00 S5L5008 Voltage Voltage Voltage Voltage Voltage Voltage PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY PIN STOP PLAY .5V 2.0V 37 0.V 0.V 73 0V 109 3.2V 3.2V 145 2.2V 2.2V 181 3.3V 2.3V 2.0V 38 3.3V 3.2V 74 0V...

  • Page 19: Circuit Diagram

    CIRCUIT DIAGRAM 1. POWER SUPPLY SCHEMATIC DIAGRAM...
  • Page 20 CIRCUIT DIAGRAM 2. DECODE BOARD SCHEMATIC DIAGRAM...
  • Page 21 CIRCUIT DIAGRAM...
  • Page 22 CIRCUIT DIAGRAM...
  • Page 23 CIRCUIT DIAGRAM 3. CONTROL BOARD SCHEMATIC DIAGRAM...
  • Page 24 CIRCUIT DIAGRAM 4. MICROPHONE BOARD SCHEMATIC DIAGRAM...

  • Page 25: Pcb Circuit Board

    PCB CIRCUIT BOARD 1. POWER SUPPLY BOARD...
  • Page 26 PCB CIRCUIT BOARD 2. DECODE BOARD...
  • Page 27 PCB CIRCUIT BOARD 3. CONTROL BOARD 4. MICROPHONE BOARD...

  • Page 28: Waveforms

    WAVEFORMS 1. VIDEO IC00 S5L5008 85Pin (DAC0) IC00 S5L5008 86Pin(DAC_PB)
  • Page 29 WAVEFORMS IC00 S5L5008 87Pin(DAC2_Y) IC00 S5L5008 90Pin(DAC3_C)
  • Page 30 WAVEFORMS IC00 S5L5008 9Pin(DAC4_CVBS) 2. AUDIO C00 S5L5008 95Pin(FR)
  • Page 31 WAVEFORMS IC00 S5L5008 96Pin(FL) IC00 S5L5008 08Pin(SPDIF_R)
  • Page 32 WAVEFORMS 3. SYSTEM WAVEFORMS CON_4P(IR) CON_6P(DAIO)
  • Page 33 WAVEFORMS CON_7P(CLK) CON_8P(STB)
  • Page 34 WAVEFORMS CON2_7P(RF) NSYS_RESET_3.3V...
  • Page 35 WAVEFORMS SDRAM CLK Crystal 4MHz...
  • Page 36 WAVEFORMS Crystal 27MHz IC 7Pin,6Pin_open_close...

  • Page 37: Trouble Shooting

    TROUBLE SHOOTING 1. POWER CIRCUIT NO POWER Exchange POWER card POWER cord is ok Check (+) Voltage of C1,C2 F1, L1, D1~D4 Cheack Switching Waveform of U1 U1,U2,U3,D5 Output voltage of Replace bad parts D7~D9 Check other parts Check L3,L4...
  • Page 38 TROUBLE SHOOTING 2. CONTROL BOARD CIRCUIT NO LED display Is 5V obtained at Check pin#1 of J1 Pin#7,21 of U1 Oscillation at Check R2, exchange U1 pin#1 of U1 Is there KEY/SEG Cheack PCB signal? KEY output at Check U1 pin #6~7 PORT of U1 Check SEG/GRID output Check U1 pin#8~27...
  • Page 39 TROUBLE SHOOTING 3. VIDEO CIRCUIT NO CVBS & S-vidro & com p onent signal appear Is signal output from ADC0~DAC4 of Net; check Check MPEG system pin# 85,86,87,90,91 of module IC100 (S5L5008A01) Is signal output from part Check Triode Q5, Q6, Q7, Q8, Q9 ,Q15 Check PCB pattern...
  • Page 40 TROUBLE SHOOTING 4. AUDIO OUTPUT CIRCUIT NO sound Audio Signal from Replace the IC100 pin#96,97 of IC100 Check audio OP AMP Check inserted part: IC304 pin#1,7 Is there MODE(L) at Check pattern pin#107 of IC100? Check parts: C348,R349,Q350, C351,R352,Q353,L354, Replace bad parts Q308,Q309,Q310,D300, D301,D302 Check Output JACK...
  • Page 41 TROUBLE SHOOTING 5. MPEG BOARD Check all Connectors CON7 Check Power Circuit Check +5v (Pin4,6) +1.2V regulator(Q14Pin2) Check that voltage is between 1.2v-1.3v Check soldering or replace it +3.3V regulator(Q13 Pin2) Check that voltage is between 3.3v-3.5v +3.3v regulator(FB2) for Check soldering or replace it SDRAM(IC104) Check +3.3V RESET Signal Q100...

  • Page 42: Instrument Disassembly

    INSTRUMENT DISASSEMBLY Make sure that all leads/ wiring are routed correctly when reassembling.

  • Page 43: Partlist

    34*0*0.5mm(single has sticker 3M #9448) rigidity38 Loader 3 5460009 Cushion 7*7*3mm (single has sticker) 32 570097 MIC Assy GV-KGVG03-PT2399-0(K30) 33 57505 Power PCB Assy GV-SM8002-PSM002-03 NO STANDBY 34 5780497 Panel Assy DG-K30 silver 2MIC 35 580073 Mpeg PCB Assy DG-K30(CHILE/PERU)DJAS5L5008-MSAM00-25(5700423) 36 5900204 Remote Control RC50-A00-(DVG-8500N)DAEWOO...
  • Page 44 PARTSLIST MPEG PCB Assy Material List Code: 5700423 No Part Code Part Name Description Location  5700423 M p e g P C B GV-DJAS5L5008-MSAM00--26(2.0CH) Assy COAXIAL,OPTICAL,S-VIDEO,MIC,YUV 2 005000 R Chip /6W,0E,±5%,0603 22 R7,R0,R46,R47,R69,R78,R79,R02,R63,R58,R77,R9[2M x6SDRAM(R92,R97)O Type,(R92,R98)P Type],R36,R40,R4 8,R3,R9,R8 3 0050004 R Chip /6W,33E,±5%,0603 R85,R80,R2,R35,R43,R34 4 0050005 R Chip...
  • Page 45 PARTSLIST No Part Code Part Name Description Location 46 0200023 C Chip 562,50V,±0%,0603 C23 47 0200036 C Chip 04,50V,±0%,0603 BC9~BC2 48 020004 C Chip 52,50V,±0%,0603 C7,C2 49 0200042 C Chip 82,50V,±0%,0603 C4,C5 50 020009 C Chip 224,25V,±0%,0603 C,C2 5 0200092 C Chip 05,25V,±0%,0603 52 0200098 C Chip 334,6V,±0%,0603...
  • Page 46 PARTSLIST POWER PCB Assy Material List Code: 57505 No Part Code Part Name Description Location 0000004 R Carbon Film /6W,4.7K,±5%,TP R2,R3,R4 0000099 R Carbon Film W,00K,±5%,TP 00008 R Carbon Film /8W,0E,±5%,TP 00002 R Carbon Film /8W,K,±5%,TP 000023 R Carbon Film /8W,M,±5%,TP 000028 R Carbon Film /8W,220E,±5%,TP...
  • Page 47 PARTSLIST Front Panel Assy Material List Code: 578073 No Part Code Part Name Description Location 200053 Panel DG-K30 200348 Knob GVG-679 power knob 200349 Knob GVG-679 function knob 242075 fittings GVG-679-2 left fittings 242076 fittings GVG-679-2 right fittings 3500004 Screw BTPW3*8 5730270 Panel Assy GV-CGVG058-05(K30)
  • Page 48 PARTSLIST MIC PCB Assy Material List Code: 570097 No Part Code Part Name Description Location 0000004 R Carbon Film /6W,4.7K,±5%,TP R7 0000005 R Carbon Film /6W,0K,±5%,TP R22,R23,R3,R4,R5,R6,R2 000003 R Carbon Film /6W,.5K,±5%,TP 000004 R Carbon Film /6W,5.6K,±5%,TP R 000005 R Carbon Film /6W,5K,±5%,TP R0,R2,R8,R22 000008 R Carbon Film...

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