Related Manuals for LG DP471B
Summary of Contents for LG DP471B
- Page 1 Internal Use Only Website http://biz.lgservice.com PORTABLE DVD SERVICE MANUAL MODEL : DP471B/DP472B/DP473B CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN73065036 APRIL, 2009...
- Page 2 CONTENTS SECTION 1..SUMMARY SECTION 2..EXPLODED VIEWS SECTION 3..ELECTRICAL SECTION 4..REPLACEMENT PARTS LIST Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 3: Table Of Contents
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ..........1-3 SERVICING PRECAUTIONS .......................... 1-4 • GENERAL SERVICING PRECAUTIONS • INSULATION CHECKING PRODEDURE • ELECTROSTATICALLY SENSITIVE (ES) DEVICES SPECIFICATIONS ............................1-5 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 4: Product Safety Servicing Guidelines For Video Products
When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs. -
Page 5: Servicing Precautions
(Note 1) should be more than 1Mohm. tricity sufficient to damage an ES device.) Note 1: Accessible Conductive Parts include Metal panels, Input terminals, Earphone jacks,etc. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 6: Specifications
480 x 234 (WQVGA) • SUPPLIED ACCESSORIES RCA Video/Audio cable AC Adapter (MPA-630) Automotive Adapter (Cu-2993) Remote Control Battery for Remote Control (Lithium Battery) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 7 MEMO LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
- Page 8 EXPLODED VIEWS CONTENTS EXPLODED VIEWS ............................2-2 1. CABINET AND MAIN FRAME SECTION ....................2-2 2. PACKING ACCESSORY SECTION ......................2-3 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 9 1. CABINET AND MAIN FRAME SECTION SVC purchase order caution Cables must be ordered assembly part. Supply is possible in Location No. 278, A40 and A53. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
- Page 10 CABLE, CIGAR JACK 835 CAR-MOUNT 808 BATTERY PLUG ASS'Y(RCA CABLE) ADAPTER 801 OWNER'S MANUAL 804 PACKING SHEET REMOTE CONTROL 803 PACKING CARRING CASE Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 11 MEMO LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
- Page 12 16. SWITCH & VIDEO BUFFER CIRCUIT DIAGRAM ................3-51 CIRCUIT VOLTAGE CHART ......................3-53 PRINTED CIRCUIT BOARD DIAGRAMS ..................3-57 1. MAIN P.C. BOARD ..........................3-57 2. LCD P.C. BOARD ..........................3-57 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 13: Electrical Troubleshooting Guide
1. POWER CHECK FLOW No 1.8V No 5V or 3.3V Check Replace 3.3V section VCC_ADP D5, Q11, Q16, Q19 working? Replace C19,C23 Replace U16 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 14: System Operation Flow
1. Execute pressed Key & IR key Tray open 2. System operation routine loop 1. Stop playback & open Tray 2. Display tray open message & LOGO Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 15: System Test Flow
1. Check code version 2. Check Crystal clock is 27MHz Flash upgrade 3. Check SDRAM clock. 4. Check reset circuit. 5. Check debug setting. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... - Page 16 Check open, short, Check cable & direction, pin definition. connection wire. 1. Check panel & panel board circuit. 2. Check TV system. Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 17 PCB & Traverse. 1. Check OPU protection. Laser on? 2. Check laser on power circuit. Check disc type. Read disc? Reading disc LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
- Page 18 Headphone 2. Check U12 setting. out normal? Pin22-HP/LINE, Pine23-SE/BTL Check open, Check Jack, short, direction, connector pin define. Check cable Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 19 Check USB power. USB detection? driver power? 1. Check differential signal. USB file play? USB signal? 2. Check related circuit. USB playing. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
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Page 20: Details And Waveforms On System Test And Debugging
Close IC FIG 1-1 1-2. Reset is active high. +3.3V_SYS C106 G692L263TCUF RESET_B LD1117AL-1.8V/SOT-223 0/J/0603 +1.8V_SYS 10U/6.3V/0805 NC/10U/6.3V/0805 0.1U/25V/0402 FIG 1-2 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 21 Debug Port Debug_1 Debug_2 NC/3P/ GNDA FIG 1-3 1-4. Flash SCK SPI_CE SPI_VCC3 SPI_HOLD DOUT HOLD# SPI_WP SPI_CLK_F MX25L1636DM21-12G FIG 1-4 3-10 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
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Page 22: Sdram Clock
FIG 2-1 3. TRAY OPEN/CLOSE SIGNAL The Cover Limit Switch COVER_SW OPEN COVER_SW SW1 A CLOSE GND_DC GND_DC FIG 3-1 3-11 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 23: Sled Control Related Signal
FIG 4-1 < DVD > 0.1U/25V/0402 VINLD TR_B3 TRB2 VINTK VREF2 BIAS DMEA MUTE AM5888S CD5888CB GNDM FIG 4-2 < CD > 3-12 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 24: Laser Power Control Related Signal
/0402 VOTK VINLD REGO1 REGO1 SPDCO TRB2 VINSL+ REGO2 VINTK REGO2 TR_B1 BIAS TRB1 MUTE VINFC AM5888S CD5888CB FIG 6-1 3-13 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 25: Focus On Waveform
LOAD- +5V_M VOTR- 0.1U/25V/0402 GNDM REGO1 REGO1 SPDCO SPDCO VINSL+ REGO2 REGO2 TR_B1 TRB1 VINFC FIG 7-2 < CD > 3-14 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 26: Tracking Control Related Signal(System Checking)
FIG 8-1 < DVD > 0.1U/25V/0402 VINLD TR_B3 TRB2 VINTK VREF2 BIAS DMEA MUTE AM5888S CD5888CB GNDM FIG 8-2 < CD > 3-15 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 27: Video Output Waveform
A/V OUTPUT FIG 9-1 10. AUDIO OUTPUT TSH-3997-2-PA66-J TC-38-363-16 AVOUT-L AVOUT-DET AVOUT-DET_GND AVOUT-R AVOUT-CVBS C127 C138 C311 A/V OUTPUT FIG 10-1 3-16 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 28: Wiring Connection Diagram
WIRING CONNECTION DIAGRAM MAIN PCB <---> LCD PCB LCD PCB MAIN PCB 3-17 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 29: Block Diagrams
6019_LIN,RIN DMEA Volume control IR receiver Motor driver Audio Amplifier CD5888 EUA6019 Speaker FOC+,FOC- SLED+,SLED- RAD+,RAD- SP+,SP- LOADER Earphone out 3-18 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 30: System Block Diagram
Line out APC558 DP,DM Audio L,R Serve control Earphone out signal EU6019 Motor driver IR receiver CD5888 Earphone out LOADER 3-19 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 31: Dc Block Diagram
+10V +16.5V +5V_M -10V +5V_RF SERVO +3.3V_RF SPV518 5V_AUD 3.3V Video, Audio VAA5V +10V 1.8V +16.5V LCD Panel LD1117 -10V 3-20 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 32: Circuit Diagrams
C243 C238 C234 C233 C227 C221 C327 C328 C329 C330 C229 C220 C218 C211 C212 C202 GND_DC GND_DC GNDA 3-21 3-22 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 33: Opu Circuit Diagram
DVDMDI TP37 TP31 SLED+ 0/J/0603 SELD+_T PUH-CDLD CDMDI SLED+ CDMDI TP30 PUH-DVDLD DVDLDO TP32 DVDLDO 2P/2.0/RA/A2001 TP34 +5V_RF TP23 3-23 3-24 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 34: Hp/Spk Amp Circuit Diagram
1K/F/0402 OP_OUT_L 6019_LIN R283 0/J/0603 VR_Lout 47K/F/0402 R284 0/J/0603 OP_OUT_R GNDA C347 C348 C349 C350 R270 100K/F/0402 GNDA GNDA 3-25 3-26 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 35: Audio I/F Circuit Diagram
U13B R233 10U/10V/0805 C103 C110 APC558KC 1K/F/0402 220P/50V/0402 1200P/50V/0402 C128 R118 PMBS3904 1N/50V/0402 100K/F/0402 H:MUTE L:ACTIVE OPVCC+ GNDA GNDA 3-27 3-28 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 36: Motor Drive Circuit Diagram
VINTK REGO2 +5V_M VREF2 TR_B1 VREF2 BIAS TRB1 DMEA DMEA MUTE VINFC AM5888S CD5888CB C174 C336 C180 TC12 GNDM 3-29 3-30 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 37: Memory Circuit Diagram
R204 For 1bit SPI Flash SPI_VCC3 SPI_D0 R202 0/J/0402 SPI_D1 R205 0/J/0402 R203 10K/F/0402 SPI_WP SPI_VCC3 10K/F/0402 SPI_HOLD 0.1U/25V/0402 3-31 3-32 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 38: Mpeg Circuit Diagram
C263 R213 DVDMDI DVDMDI 27M/49US/DIP CDMDI NC/0/J/0402 CDMDI 33P/50V/0402 33P/50V/0402 DVDLDO DVDLDO OPUSW1 OPUSW1 Close to 8202T Close IC 3-33 3-34 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 39: Video Controler Circuit Diagram
I2C_DATA R158 0/J/0402 I2C_CLK R157 0/J/0402 R274 0/J/0402 518RSTT 518RST ADC_VCC3 VDAC_VCC3 IO_VCC3 C183 C197 C188 C199 C182 C172 3-35 3-36 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 40: Av I/F Circuit Diagram
C313 C314 C315 C141 C310 C139 ADD 11.27 1000P/50V/0402 GNDA TP96 R107 0/J/0805 GND_DC GNDA 0/J/0603 Headphone out ISOLATOR 3-37 3-38 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 41: Usb I/F Circuit Diagram
1A/120OHM/0603 5V_USB D-_USB 33/F/0603 USB_DM D+_USB 33/F/0603 USB_DP R52 1A/120OHM/0603 15K/F/0402 15K/F/0402 R261 0/J/0603 10P/50V/0402 10P/50V/0402 5P/1.25/RA/LM103 C353 TP12 3-39 3-40 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 42: Lcd Power Circuit Diagram
PWR_5V PMBS3904 VDAC_VCC3 0/J/0603 GND_DC GND_DC C190 C181 10U/10V/0805 10U/10V/0805 +3.3V_SYS LD1117AL-1.8V/SOT-223 0/J/0603 +1.8V_SYS 10U/6.3V/0805 0.1U/25V/0603 10U/6.3V/0805 NC/10U/6.3V/0805 0.1U/25V/0402 3-41 3-42 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 43: Mpeg Power Circuit Diagram
0/J/0603 C268 C272 C275 10U/6.3V/0805 10U/6.3V/0805 0.1U/25V/0402 GNDA DVCC3 0/J/0603 10U/6.3V/0805 10U/6.3V/0805 0.1U/25V/0402 L15 0/J/0603 SPI_VCC3 L84 0/J/0603 SD_VCC3 3-43 3-44 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 44: Input Power Circuit Diagram
NC/0R/J/1206 100K/F/0402 UDZSTE-1713B PMBS3904 BAT_DET PMBS3904 ADPIN_DET PMBS3904 C301 C338 10U/10V/0805 R240 R228 47K/F/0402 0/J/0603 R238 1K/F/0603 GND_DC GND_DC 3-45 3-46 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 45: B/L Power Circuit Diagram
1K/F/0402 R162 1K/F/0603 FB_A C325 R154 R156 C168 1N/50V/0402 0.1U/25V/0402 1N/50V/0402 39/F/0603 39/F/0603 22U/10V/A 1K/J/0402 169R/J/0603 BL_PWM 1U/16V/0603 4.7U/6.3V/0603 3-47 3-48 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 46: Charger Power Circuit Diagram
560P/50V/0402 10U/10V/0805 EC10 EC11 C341 560P/50V/0402 C335 R198 R272 15K/F/0402 1U/16V/0603 B140 49.9K/F/0402 280K/F/0402 5.1/F/0402 R199 15K/F/0402 GND_DC 21.5K/F/0402 3-49 3-50 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 47: Switch & Video Buffer Circuit Diagram
10U/10V/0805 SW1 A PANEL_VR PANEL_VR TC11 PMBS3904 VAA5 VCC_BIAS 22U/10V/1206 GND_DC 150/F/0402 1K/F/0402 C200 C198 C204 C208 GND_DC 100/F/0402 3-51 3-52 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 48: Circuit Voltage Chart
1.615 1.610 0.069 1.877 1.842 5.277 0.616 1.504 1.411 3.435 3.278 0.062 0.070 1.242 1.845 0.053 1.141 1.035 5.057 3-53 3-54 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 49 0.061 Drain 1.346 1.328 Cathode 0.164 3.062 3.061 Collector 0.648 3.022 Gate 8.888 8.832 Base 0061 Source 8.544 8.477 3-55 3-56 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
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Page 50: Printed Circuit Board Diagrams
PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN P.C. BOARD (TOP VIEW) (BOTTOM VIEW) 2. LCD P.C. BOARD (TOP VIEW) (BOTTOM VIEW) 3-57 3-58 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 51 MEMO MEMO 3-59 3-60 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...