Related Manuals for LG DKC880
Summary of Contents for LG DKC880
- Page 1 CONTENTS SECTION 1..SUMMARY SECTION 2..CABINET & MAIN CHASSIS SECTION 3..ELECTRICAL SECTION 4..MECHANISM (DP-12) SECTION 5..REPLACEMENT PARTS LIST...
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Page 2: Table Of Contents
SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTS ....1-3 SERVICING PRECAUTIONS ..................1-4 • GENERAL SERVICING PRECAUTIONS • INSULATION CHECKING PRODEDURE • ELECTROSTATICALLY SENSITIVE (ES) DEVICES SERVICE INFORMATION FOR EEPROM..............1-5 SPECIFICATIONS .....................1-6... -
Page 3: Product Safety Servicing Guidelines For Dvd Products
PRODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, NEVER SUBJECT : X-RADIATION PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER’S 1.BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE COVER THE SUBJECT OF X-RADIATION. -
Page 4: Servicing Precautions
SERVICING PRECAUTIONS CAUTION : Before servicing the DVD covered by this service Electrostatically Sensitive (ES) Devices data and its supplements and addends, read and follow the Some semiconductor (solid state) devices can be damaged unforeseen easily by static electricity. Such components commonly are SAFETY PRECAUTIONS. -
Page 5: Service Information For Eeprom
SERVICE INFORMATION FOR EEPROM POWER ON DETECT NEW EEPROM DVD LOGO Status (NO Disk status) (OPTION EDIT SCREEN) MODEL : NAME Remotecontrol OPT 1 Pause key-->1-->4-->7-->2 in order. OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 Press number 0~8, Press charater OPT 7 A~F (1~6 for a while) OPT 8... -
Page 6: Specifications
SPECIFICATIONS • GENERAL AC 110-240V , 50/60Hz Power requirements : Power consumption : Dimensions (Approx.) : 430 x 35 x 202mm (17 x 1.4 x 7.9inches) (W x H x D) without foot Net Weight (Approx.) : 1.9kg (4.2lbs) Operating temperature : 5°C to 35°C (41°F to 95°F) Operating humidity : 5% to 90%... - Page 7 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. CABINET AND MAIN FRAME SECTION .................2-2 2. PACKING ACCESSORY SECTION..................2-3...
- Page 8 EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION OPTIONAL PART...
- Page 9 2. PACKING ACCESSORY SECTION RF CABLE 810 CABLE SET ASS’Y PLUG ASS’Y 1WAY(YELLOW) PLUG ASS’Y 2WAY BATTERY PLUG ASS’Y 1WAY(BLACK) REMOCON OWNER’S MANUAL PACKING SHEET PACKING PACKING 832 DISC BOX CARTON OPTIONAL PARTS...
- Page 10 SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ..............3-2 1. POWER CHECK FLOW ......................3-2 2. SYSTEM OPERATION FLOW....................3-3 3. SYSTEM TEST FLOW......................3-4 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG ......3-10 1. SYSTEM 27MHZ CLOCK, RESET, FLASH R/W SIGNAL ...........3-10 2. SDRAM CLOCK ........................3-12 3.
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Page 11: Electrical Troubleshooting Guide
ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER CHECK FLOW No 5V No 3.3VA. Is 3.3VA section working? Is 3.3VA section working? Is 5.6V present at collector Is 3.3V present at emitter No 3.3VA of Q126? of Q121? Replace Q126. Check FR101 Replace Q121. Is there a DC voltage at Check D105/D106/D107/ Cathode of D105 or D107? -
Page 12: System Operation Flow
2. SYSTEM OPERATION FLOW Power on 1. 8032 initializes SERVO,DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC Show LOGO Tray closed ? Tray close to closed position SLED at inner side ? SLED moves to inner position 1. -
Page 13: System Test Flow
3. SYSTEM TEST FLOW TEST Check the AC Voltage Replace power PCBA or AC transformer. Power PCBA(110V or 220V) Switch on the power PCBA Is the DC voltage outputs OK? Repair or Replace Power PCBA (5V, 3.3V, 12V, 5.6V MOTOR) Make sure the main PCBA don't short on VCCs and switch it on. - Page 14 RESET or Power on. Check connection lines between Flash memory Show LOGO? FLASH & MT1389E and the FLASH operates properly? access time whether is suitable or not. Check connection lines between SDRAM works properly? SDRAM & MT1389E and the SDRAM is damaged. MT1389E VIDEO Check the related outputs properly?
- Page 15 Does the SLED move to inner Motor driver STBY Check the connection side when it is at outter position? pin is high? line of STBY signal. Is FMSO DC level Check the related higher than 1.4V? circuit of FMSO. SL+ and SL- output Check the amp circuit properly? on motor driver.
- Page 16 Check the laser power circuit Laser turns on when LD01 or LD02 output on MT1389E and connecting reading disc? properly? to power transistor. Collector voltage of Check the related circuit on power transistor is OK? laser power transistor. Check cable connection between transistor ouput and pick-up head.
- Page 17 Proper signals on Check connections between Focus on OK? A, B, C, D of MT1389E MT1389E and pick-up head. Check FEO signal Check the FOSO connection on MT1389E on MT1389E and motor driver. Check FOSO signal on MT1389E Normal TEO Signal Check the related Track on OK? on MT1389E?
- Page 18 Normal Audio output Audio DAC received Check connection between when disc playback? correct data stream? MT1389E & audio DAC. Check the related Normal audio DAC out? circuit of audio DAC. Check audio filter, amplify, mute circuit. Communications between Normal IR.VFD & Front Check communication IR.VFD Front pannel key &...
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Page 19: Details And Waveforms On System Test And Debuggibg
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG 1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL 1) MT1389E main clock is at 27MHz (X601) FIG 1-1 2) MT1389E reset is low active 3.3V IC602 PWR_CTL RESET TIME FIG 1-2 3-10... - Page 20 3) RS232 waveforn during procedure (Downloading) FIG 1-3 4) Flash R/W enable signal during download (Downloading) IC602 FIG 1-4 3-11...
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Page 21: Sdram Clock
2. SDRAM CLOCK DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V IC603 FIG 2-1 3. TRAY OPEN/CLOSE SIGNAL IC601 TRIN TROUT TRCLOSE TROPEN FIG 3-1 3-12... -
Page 22: Sled Control Related Signal (No Disc Condition)
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) FMSO(1.9V/1.4V/1.1V) STBY(3.3V) SL+(4.2V/2.8V/1.2V) SL-(4.2V/2.8V/1.5V) FIG 4-1 5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION) FOSO(1.5V/1.4V/1.3V) F+(3.2V/2.7V/2.2V) F-(3.2V/2.7V/2.2V) FIG 5-1 3-13... -
Page 23: Laser Power Control Related Signal (No Disc Condition)
6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) IC601 MDI1 (0V/180mV) LD02 (3.3V/2.3V) LD01 (3.3V/2.3V) FIG 6-1 7. DISC TYPE JUDGEMENT WAVEFORM CN201 IC601 FIG 7-1 (DVD) 3-14... - Page 24 FIG 7-2 (DVD) FIG 7-3 (CD) 3-15...
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Page 25: Focus On Waveform
FIG 7-4 (CD) 8. FOCUS ON WAVEFORM IC601 FOSO FIG 8-1 (DVD) 3-16... -
Page 26: Spindle Control Waveform (No Disc Condition)
FOSO FIG 8-2 (CD) 9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) DMSO (1.4V/1.8V) (3.6V/2.4V) (3.6V/4.8V) FIG 9-1 3-17... -
Page 27: Tracking Control Related Signal (System Checking)
10. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING) IC601 TRSO FIG 10-1 (DVD) CN201 TRSO FIG 10-2 (CD) 3-18... -
Page 28: Mt1389E Audio Optical And Coaxial Output (Spdif)
11. MT1389E AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF) IC601 FIG 11-1 12. MT1389E VIDEO OUTPUT WAVEFORM 1) 100% FIG 12-1 3-19... -
Page 29: Audio Output From Mt1389E
2) COMPOSITE VIDEO SIGNAL FIG 12-2 13. AUDIO OUTPUT FROM MT1389E FIG 13-1 3-20... -
Page 30: Connector Picture
CONNECTOR PICTURE 1. FULL CONNECTOR PICTURE 3-21... -
Page 31: Cn201 Connector Picture
2. CN201 CONNECTOR PICTURE CN201(22PIN) 3. CN202 CONNECTOR PICTURE CN202 (9PIN) 3-22... -
Page 32: Cn601 Connector Picture
4. CN601 CONNECTOR PICTURE CN601 (12PIN) 5. CN602 CONNECTOR PICTURE CN602 (10PIN) 3-23... -
Page 33: Cn605 Connector Picture
6. CN605 CONNECTOR PICTURE CN605 (5PIN) 7. CN703 CONNECTOR PICTURE CN703 (12PIN) 3-24... -
Page 34: Cn704 Connector Picture
8. CN704 CONNECTOR PICTURE CN704 (9PIN) 9. P101 CONNECTOR PICTURE P101 (10PIN) 3-25... -
Page 35: Block Diagrams
BLOCK DIAGRAMS 1. OVERALL BLOCK DIAGRAM 3-26... -
Page 36: Power Supply Block Diagram
2. POWER SUPPLY BLOCK DIAGRAM 3-27... -
Page 37: Servo Block Diagram
3. SERVO BLOCK DIAGRAM 3-28... -
Page 38: Mpeg & Memory Block Diagram
4. MPEG & MEMORY BLOCK DIAGRAM 3-29... -
Page 39: Video Block Diagram
5. VIDEO BLOCK DIAGRAM 3-30... -
Page 40: Audio Block Diagram
6. AUDIO BLOCK DIAGRAM 3-31... - Page 41 MEMO 3-32...
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Page 42: Circuit Diagrams
BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE ACTUAL CIRCUIT USED. THIS WAY, 2. Voltages are DC-measured with a digital voltmeter 1. POWER (SMPS) CIRCUIT DIAGRAM FROM THE LG CORPORATION. ALL COMPONENTS IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. SHOULD... -
Page 43: System (Mpeg) Circuit Diagram
2. SYSTEM (MPEG) CIRCUIT DIAGRAM 3-35 3-36... -
Page 44: Servo Circuit Diagram
3. SERVO CIRCUIT DIAGRAM 3-37 3-38... -
Page 45: Av/Jack Circuit Diagram
4. AV/JACK CIRCUIT DIAGRAM 3-39 3-40... -
Page 46: Karaoke & Usb Circuit Diagram (8 & 9 Tool)
5. KARAOKE & USB CIRCUIT DIAGRAM (8 & 9 TOOL) 3-41 3-42... -
Page 47: Timer/Key Circuit Diagram (4 & 7 Tool)
6. TIMER/KEY CIRCUIT DIAGRAM (4 & 7 TOOL) 3-43 3-44... -
Page 48: Timer/Key Circuit Diagram (5 Tool)
7. TIMER/KEY CIRCUIT DIAGRAM (5 TOOL) 3-45 3-46... -
Page 49: Timer/Key Circuit Diagram (8 Tool)
8. TIMER/KEY CIRCUIT DIAGRAM (8 TOOL) 3-47 3-48... -
Page 50: Timer/Key Circuit Diagram (9 Tool)
9. TIMER/KEY CIRCUIT DIAGRAM (9 TOOL) 3-49 3-50... -
Page 51: Circuit Voltage Chart
• CIRCUIT VOLTAGE CHART PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE IC201 0.965 1.869 3.259 1.945 3.281 IC602 1.36 0.968 1.950 0.391 3.282... -
Page 52: Printed Circuit Diagrams
PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-53 3-54... -
Page 53: Key P.c.board
2. KEY P.C.BOARD 3. TIMER P.C.BOARD 4. KARAOKE P.C.BOARD (KARAOKE MODEL ONLY) (4 TOOL) (4 TOOL) (4 TOOL) (5 TOOL) (5 TOOL) (5 TOOL) (7 TOOL) (7 TOOL) (7 TOOL) (8 TOOL) (8 TOOL) (8 TOOL) (9 TOOL, WITHOUT) (9 TOOL) (9 TOOL) 3-55 3-56... -
Page 54: Smps P.c.board
5. SMPS P.C.BOARD 6. SUB SCART (OPTIONAL PART) (430mm) 7. SUB 5.1CH (OPTIONAL PART) (430mm) 3-57 3-58... - Page 55 MEMO MEMO 3-59 3-60...
- Page 56 SECTION 4 MECHANISM OF DVD PART (DP-12) CONTENTS 5. Frame Assembly Up/Down ....4-4 DECK MECHANISM PARTS 6. Belt Loading........4-4 LOCATIONS 7. Gear Pulley........4-4 8. Gear Loading ........4-4 • Top View ..........4-1 9. Guide Up/Down.........4-4 • Top View(without Tray Disc) ....4-1 •...
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Page 57: Deck Mechanism Parts Locations
DECK MECHANISM PARTS LOCATION • Top View (With Tray) Procedure Disass Fig- Parts Fixing Type embly Starting No. Main Base Clamp Assembly Disc 1, 2 Plate Clamp 1, 2, 3 Magnet Clamp 1, 2, 3, 4 Clamp Upper Tray Disc 1, 6 Base Assembly Sled 4 Screws,... -
Page 58: Deck Mechanism Disassembly
DECK MECHANISM DISASSEMBLY TRAY DISC MAIN BASE DISC CLAMP ASSEMBLY PLATE CLAMP MAGNET CLAMP CLAMP UPPER BASE MAIN (Fig. A) HOLDER LEVER BASE MAIN BASE MAIN BOTTOM SIDE VIEW Fig. 4-1 Fig. 4-2 1. Main Base (Fig. 4-1) 2. Tray Disc (Fig. 4-2) 1-1. -
Page 59: Base Assembly Sled
DECK MECHANISM DISASSEMBLY RUBBER DAMPER Distinguish upper and lower sides (Assemble with care) (S2) RUBBER DAMPER (S2) RUBBER DAMPER (S2) Distinguish upper and lower sides (Assemble with care) BASE PU (S2) GENERAL PICK UP ASSEMBLY GEAR RACK SPINDLE MOTOR ASSEMBLY Fig. -
Page 60: Frame Assembly Up/Down
DECK MECHANISM DISASSEMBLY GUIDE UP/DOWN GEAR LOADING GEAR PULLEY SCREW INSERTION TORGUE CONTROL BASE MAIN (800gf DOWN) (L4) BELT LOADING (H1) PWB ASSEMBLY LOADING (C2) (S5) BASE MAIN UP/DOWN FRAME ASSEMBLY (L5) GUIDE UP/DOWN FIG. (A) FIG. (B) GUIDE UP/DOWN GUIDE UP/DOWN FIG. -
Page 62: Exploded View
EXPLODED VIEWS 1. Deck Mechanism Exploded View DP-12 015B 015A... - Page 63 MEMO MEMO...