LG cm4550 manual de servicio



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Internal Use OnlySERVICE MANUAL Mini Hi-Fi System SERVICE MANUAL MODEL: CM4550 (CM4550, CMS4550F/W) MODEL: CM4550 (CM4550, CMS4550F/W) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN77483203 MARCH, 2016 Downloaded from www.Manualslib.com manuals search engine CONTENTS SECTION 1 ........ GENERAL SECTION 2 ........ CABINET & MAIN CHASSIS SECTION 3 ........ ELECTRICAL SECTION 4 ........ REPLACEMENT PARTS LIST 1-1 Downloaded from www.Manualslib.com manuals search engine SECTION 1 SUMMARY CONTENTS SERVICING PRECAUTIONS ................................................................................................................... 1-3 ESD PRECAUTIONS .................................................................................................................................. 1-5 HIDDEN KEY MODE................................................................................................................................... 1-6 SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-7 PROGRAM DOWNLOAD & UPDATE GUIDE ................................................................................... 1-8 1. MCS PROGRAM....................................................................................................................................... 1-8 2. EQ PROGRAM ......................................................................................................................................... 1-9 SPECIFICATIONS ..................................................................................................................................... 1-10 1-2 Downloaded from www.Manualslib.com manuals search engine SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage 1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact. Storage in conductive bag Drop impact 2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged. NEVER look directly at the laser beam, and don’t allow contact with fingers or other exposed skin. 5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot- ton swab should be used, taking care not to distort lens. Pressure Magnet Pressure How to hold the pick-up Cotton swab Conductive Sheet 6) Never attempt to disassemble the pick-up. Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up. 1-3 Downloaded from www.Manualslib.com manuals search engine NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care. 2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet- ism is present, or where there is excessive dust. 2. Notes for repair 1) Before replacing a component part, first disconnect the power supply lead wire from the unit 2) All equipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1 M) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Armband Resistor (1 M) Resistor Conductive (1 M) Sheet 1-4 Downloaded from www.Manualslib.com manuals search engine ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device). CAUTION. GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. 1-5 Downloaded from www.Manualslib.com manuals search engine HIDDEN KEY MODE Push both Front key and RCU key to activate it for 5 seconds. 1. Disc Lock On/Off (CD Function Only Active)  Front Key : STOP  RCU Key : STOP 2. Check Version and Option code  Front Key : STOP  RCU Key : PLAY/PAUSE  You can change [Audio MCU Version <-> CD Controller Version <-> EEPROM Option] by SKIP+/-. 3. Clear EEPROM  Front Key : STOP  RCU Key : SKIP- 4. Edit EEPROM  Front Key : STOP  RCU Key : SKIP+  You can change the digit of option by SKIP+/-.  You can edit 0~f by REPEAT or PLAY/PAUSE key. 5. Bluetooth DUT  Front Key : STOP  RCU Key : PROGRAM  Bluetooth model only 6. Power Disc Lock On/Off (CD Function Only Active)  Front Key : STOP  RCU Key : EQ 7. Amp Clip On/Off  Front Key : STOP  RCU Key : Mute Amp Clip Mode Change (Amp Clip On --> Amp Clip Off --> Level Down display). 1-6 Downloaded from www.Manualslib.com manuals search engine SERVICE INFORMATION FOR EEPROM POWER ON FLD no disc status or AUX status. Remote control ‘Fwd skip’ + Front ‘STOP’ push same timing during 5 seconds. FLD ‘OP-0…. Move to appropriate position and make changes with remote control ‘skip, mode, play’ key. Press ENTER key FLD ‘write ok’ Remote control ‘Fwd skip’ + Front ‘STOP’ push same timing FLD ‘E2P CLR’ Completed 1-7 Downloaded from www.Manualslib.com manuals search engine PROGRAM DOWNLOAD & UPDATE GUIDE 1. MCS PROGRAM Download program file name must be - HG520_FW_CM4750_DATE.bin If security program (Water Wall) is activated on your PC, you must save the file to the USB storage device and disable the security software, then download the file to your set. Caution: When downloading the file, you should neither unplug the USB device, change to the other function, nor power off the device. USB device must be unplugged when the downloading process is completed. ON VFD DISPLAY SCREEN NO USB  Insert USB device at USB function. SEARCH  FIRMWARE  FINISH  POWER OFF MANUALLY When completed, remove USB device. 1-8 Downloaded from www.Manualslib.com manuals search engine 2. EQ PROGRAM Download program file name must be - CM4350: EQ_PRG_CM4350_***.BIN - CM4450/CM4550: EQ_PRG_CM4550_***.BIN - CM4650/CM4750: EQ_PRG_CM4750_***.BIN If security program (Water Wall) is activated on your PC, you must save the file to the USB storage device and disable the security software, then download the file to your set. Caution: When downloading the file, you should neither unplug the USB device, change to the other function, nor power off the device. USB device must be unplugged when the downloading process is completed. ON VFD DISPLAY SCREEN NO USB  Insert USB device at USB function. SEARCH  EQ UP  FINISH  POWER OFF AUTOMATICALLY When completed, remove USB device. 1-9 Downloaded from www.Manualslib.com manuals search engine SPECIFICATIONS • GENERAL Power requirements Refer to the main label. Power consumption Refer to the main label. Networked standby : 0.4 W (If all network ports are activated.) Dimensions (W x H x D) (206 x 308 x 284) mm Net Weight (Approx.) 3.0 kg Operating temperature 5 °C to 35 °C Operating humidity 5 % to 90 % Bus Power Supply 5V 500 mA • INPUTS AUX IN 2.0 Vrms (1 kHz, 0 dB), 75 Ω, RCA jack (L, R) Port In 1.2 Vrms (3.5 mm stereo jack) • TUNER FM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHz • AMPLIFIER Total output 700 W Front 230 W X 2 (3 Ω at 1 kHz) Subwoofer 240 W (3 Ω at 1 kHz) THD 20 % • CD Frequency Response 100 to 20,000 Hz Signal-to-noise ratio 75 dB Dynamic range 75 dB • FRONT SPEAKER Type 2 Way 2 Speaker Impedance 3Ω Rated Input Power 230 W Max. Input power 460 W Net Dimensions (W x H x D) (266 x 306 x 263) mm Net Weight 3.1 kg • SUBWOOFER SPEAKER Type 1 Way 1 Speaker Impedance 3Ω Rated Input Power 240 W Max. Input power 480 W Net Dimensions (W x H x D) (266 x 306 x 232) mm Net Weight 4.7 kg • Design and specifications are subject to change without notice 1-10 Downloaded from www.Manualslib.com manuals search engine SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS..................................................................................................................................... 2-3 1. CABINET AND MAIN FRAME SECTION (CM4550) ................................................................................ 2-3 2. MECHANISM DECK SECTION (DP17TM3) ............................................................................................ 2-5 3. PACKING ACCESSORY SECTION ......................................................................................................... 2-7 4. SPEAKER SECTION ................................................................................................................................ 2-8 2-1 Downloaded from www.Manualslib.com manuals search engine 2-2 Downloaded from www.Manualslib.com manuals search engine EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION (CM4550) NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE 464 464 LITERATURE. 260L 261 464 F 262 460 SMPS E A47 463 269 264 443 463 443 464 255 B 263 H A CABLE1 A43 FRONT 443 H A42 464 255 A46 252 443 260R CABLE4 464 A52 464 MAIN G D A G C B/T B E 253 A44 251 265 D 259 C 464 266 F 300 266 Downloaded from www.Manualslib.com manuals search engine 2. MECHANISM DECK SECTION (DP17TM3) 1439 1002 A001 1005 1001 1026 1003 1004 1030 1024 1437 1437 1024 1024 1012 1049 1437 1013 1016 1015 1024 1020 1011 A006 A005 1019 1043 1018 1045 1439 Downloaded from www.Manualslib.com manuals search engine 3. PACKING ACCESSORY SECTION 801 Instruction Ass'y 808 Battery 825 FM Wire Antenna 900 Remote Control 803 Packing 804 Bag 803 Packing 802 Box Downloaded from www.Manualslib.com manuals search engine 4. SPEAKER SECTION 4-1. FRONT SPEAKER (CMS4550F) A60 Downloaded from www.Manualslib.com manuals search engine 4-2. SUBWOOFER SPEAKER (CMS4550W) A90 2-9 Downloaded from www.Manualslib.com manuals search engine 2-10 Downloaded from www.Manualslib.com manuals search engine SECTION 3 ELECTRICAL CONTENTS ONE POINT REPAIR GUIDE ...................................................................................................................3-2 1. NO POWER ............................................................................................................................................3-2 2. NO BOOTING WHEN POWER ON THE SET........................................................................................3-4 3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET .....................................................................3-5 4. NO OPERATION OF MD ........................................................................................................................3-6 5. NO SOUND ...........................................................................................................................................3-11 AUDIO ELECTRICAL TROUBLESHOOTING GUIDE ...................................................................3-17 1. POWER (SMPS) ...................................................................................................................................3-17 2. MCS PART CHECK ..............................................................................................................................3-20 3. IC504(M24C16) CHECK .......................................................................................................................3-20 4. FLD DISPLAY CHECK .........................................................................................................................3-21 5. PWM MODULATION CHECK ...............................................................................................................3-22 6. POWER AMP PART CHECK ...............................................................................................................3-24 7. TUNER / AUX FUNCTION CHECK ......................................................................................................3-25 8. TUNER FUNCTION CHECK.................................................................................................................3-26 CDP ELECTRICAL TROUBLESHOOTING GUIDE........................................................................3-27 1. CD FUNCTION .....................................................................................................................................3-27 2. DOUBLE USB FUNCTION ...................................................................................................................3-28 WAVEFORMS OF MAJOR CHECK POINT......................................................................................3-29 1. SDRAM .................................................................................................................................................3-29 2. SERVO ..................................................................................................................................................3-29 3. AUDIO PATH ........................................................................................................................................3-30 4. USB .......................................................................................................................................................3-31 WIRING DIAGRAM....................................................................................................................................3-33 BLOCK DIAGRAMS .................................................................................................................................3-35 1. SYSTEM BLOCK DIAGRAM ................................................................................................................3-35 2. SMPS BLOCK DIAGRAM .....................................................................................................................3-37 3. AUDIO PATH BLOCK DIAGRAM .........................................................................................................3-39 4. POWER DIAGRAM ...............................................................................................................................3-41 CIRCUIT DIAGRAMS ...............................................................................................................................3-43 1. SMPS CIRCUIT DIAGRAM ..................................................................................................................3-43 2. MAIN - DSP CIRCUIT DIAGRAM .........................................................................................................3-45 3. MAIN - SERVO CIRCUIT DIAGRAM ....................................................................................................3-47 4. MAIN - ADC/ PWM CIRCUIT DIAGRAM ..............................................................................................3-49 5. MAIN - AMP CIRCUIT DIAGRAM.........................................................................................................3-51 6. FRONT CIRCUIT DIAGRAM ................................................................................................................3-53 CIRCUIT VOLTAGE CHART .................................................................................................................3-55 1. ICs .........................................................................................................................................................3-55 2. CAPACITORS .......................................................................................................................................3-57 PRINTED CIRCUIT BOARD DIAGRAMS ..........................................................................................3-59 1. SMPS P.C.BOARD ...............................................................................................................................3-59 2. MAIN P.C.BOARD ................................................................................................................................3-61 3. FRONT P.C.BOARD .............................................................................................................................3-63 3-1 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE 1. NO POWER If the unit doesn’t work by no power problem, repair the set according to the follow- ing guide. 1-1. FUSE & BRIDGE DIODE 1-1-1. Solution Please check and replace F901, BD901, TH901 or TH903 on SMPS board. 1-1-2. How to troubleshoot (Countermeasure) 1) Check if the fuse F901 is open or short-circuit. 2) Check if the bridge diode BD901 is short-circuit by over current with a digital multi meter. 3) Check if the NTC thermistor TH901 or TH903 is normal or open. 1-1-3. Service hint (Any picture / Remark) < F901 > < BD901 > < TH901 > If F901 is not short-circuit, If BD901 is short-circuit, If TH901 is open, replace it with a same replace it with a new one. replace it with a new one. specifications one. 3-2 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO POWER If the unit doesn’t work by no power problem, repair the set according to the follow- ing guide. 1-2. D951 1-2-1. Solution Please check and replace D951 on SMPS board. 1-2-2. How to troubleshoot (Countermeasure) 1) Check the anode-cathod voltage of D951 with a digital multi-meter, it is normally 0.2 ~ 0.3 V.  If it doesn’t have any voltage, it’s destroyed. Replace it with a new one. 1-2-3. Service hint (Any picture / Remark) < SMPS schematic diagram > 3-3 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE 2. NO BOOTING WHEN POWER ON THE SET The set doesn’t work when press the power button on the front board or the remote control. 2-1. FLASH MEMORY 2-1-1. Solution Please check and replace IC503 on MAIN board. 2-1-2. How to troubleshoot (Countermeasure) 1) Check 5.6 V to CN501 in standby mode.  If there is no 5.6 V, check the SMPS. 2) Check 12 V, F+, F- and PVDD when power on the set. - If the set doesn’t work regardless of what the KEY1 changes high to low while pressing the power button. X500 and X501 work normally but, if you can not power on the set, replace IC501 with a new one on the MAIN board. 2-1-3. Service hint (Any picture / Remark) PWR_CTRL(R53D) IC501 KEY1(R542) < Signal check point > 3-4 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE 3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET When power on the set, any icons or characters on VFD are not displayed. 3-1. VFD 3-1-1. Solution Please check and replace DIG302 on FRONT board. 3-1-2. How to troubleshoot (Countermeasure) 1) Check if VKK, FL+ and FL- are output from SMPS to VFD via the MAIN board. 2) Check if IC501 outputs VFD_D0, VFD_CLK and VFD_STB to the FRONT board. 3) Check the GR signal(pulse signal) of IC408 on the FRONT board. Check the SG signal(pulse signal) of IC408 on the FRONT board.  If the GR and SG signal isn’t output, replace IC408 with a new one.  If the GR and SG signal is output, replace DIG302 with a new one. 3-1-3. Service hint (Any picture / Remark) GR signal GR SIGNAL ABOUT 30 V SG signal SG SIGNAL ABOUT 30 V Click the picture, and then drag to enlarge it. Check the waveform on details. < Waveform of GR and SG signal > 3-5 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE 4. NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the SPINDLE MOTOR among them. 4-1. SPINDLE MOTOR 4-1-1. Solution Please check and replace IC407, IC408 on MAIN board. 4-1-2. How to troubleshoot (Countermeasure) 1) Check the SPDO signal from pin24 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check the SPIN- & SPIN+ from IC408 to CN405 for driving SPINDLE motor. It is about 3.6 Vp-p.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the spindle motor is sort-circuit or has any trouble, it can not rotate CD discs. Please check the function after changing another MD. 4-1-3. Service hint (Any picture / Remark) Sp+ Pin17 to CN405 About 3.6 Vpp Sp- Pin18 to CN405 < Waveform of SP- & SP+ < Signal check point > for driving SPINDLE motor > 3-6 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the SLED MOTOR among them. 4-2. SLED MOTOR 4-2-1. Solution Please check and replace IC407, IC408 on MAIN board. 4-2-2. How to troubleshoot (Countermeasure) 1) Check the SLDO signal from Pin23 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check the SLED+ & SLED- from IC408 to CN405 for driving SPINDLE motor. It is about 2.9 Vp-p.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the sled motor is sort-circuit or has any trouble, it can not move the pickup module. Please check the function after changing another MD. 4-2-3. Service hint (Any picture / Remark) SLED+ Pin11 to CN405 SL- TO CN405 SL+ TO CN405 SLED- Pin12 to CN405 < Waveform of SLED- & SLED+ < Signal check point > for driving SLED motor > 3-7 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the TRAY OPEN / CLOSE MOTOR among them. 4-3. TRAY OPEN / CLOSE MOTOR 4-3-1. Solution Please check and replace IC407, IC408 on MAIN board. 4-3-2. How to troubleshoot (Countermeasure) 1) Check MOT_OPEN & MOT_CLOSE signals from Pin K4, L4 of IC501 to IC408.  If no signal, check +1.8 V & + 5 V to IC408. 2) Check LOAD± from IC408 to CN405 for driving the tray open / close motor. It is about 3.85 Vp-p.  If no signal, check +5 V to IC408. If it has any trouble, replace it with a new one. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the tray motor is sort-circuit or has any trouble, it can not open or close the tray. Please check the function after changing another MD. 4-3-3. Service hint (Any picture / Remark) LOAD+ MOT_OPEN Pin9 to CN405 Pin7 to CN405 MOT_OPEN CLOSE LO- TO CN405 LO+ TO CN405 LOAD- MOT_CLOSE Pin10 to CN405 Pin6 to CN405 < Waveform < Signal check point > for driving TRAY open / close motor > 3-8 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesn’t work. This step is for checking the LASER TRACKING ACTUATOR. 4-4. LASER TRACKING ACTUATOR 4-4-1. Solution Please check and replace IC407, IC408 on MAIN board. 4-4-2. How to troubleshoot (Countermeasure) The tracking actuator makes the laser beam be positioned in the center of a track on CD disc. 1) Check the TRD signal from Pin22 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check TR- & TR+ from IC408 to CN408 for driving the tracking actuator.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the pickup module has any trouble, it can not move the laser beam on the left or right side. Please check the function after changing another MD. 4-4-3. Service hint (Any picture / Remark) TR- Pin15 to CN405 TR+ Pin16 to CN405 < Waveform of TR± < Signal check point > for driving TRACKING actuator > 3-9 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesn’t work. This step is for checking the LASER FOCUSING ACTUATOR. 4-5. LASER FOCUSING ACTUATOR 4-5-1. Solution Please check and replace IC407, IC408 on MAIN board. 4-5-2. How to troubleshoot (Countermeasure) The focusing actuator makes the laser beam keep a regular interval with the surface of a CD disc. 1) Check the FOD signal from Pin21 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check F- & F+ from IC408 to CN405 for driving the focusing actuator.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the pickup module has any trouble, it can not move the laser beam on the top or bottom side. Please check the function after changing another MD. 4-5-3. Service hint (Any picture / Remark) F- Pin13 to CN405 F+ Pin14 to CN405 < Waveform of TR± < Signal check point > for driving FOCUSING actuator > 3-10 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE 5. NO SOUND There is no sound output in the CD FUNCTION, repair the set according to the follow- ing guide. 5-1. IN THE CD FUNCTION 5-1-1. Solution Please check and replace IC501, IC601 on MAIN board. 5-1-2. How to troubleshoot (Countermeasure) 1) Check CD_BCLK, CD_LRCK, & CD_DOUTA signals from IC407 to IC501.  If no signal, check if the RF & servo signals from MD is entered to IC407. Refer to the “No operation of MD” guide on Item 4. 2) Check the following I2S signal flow. < I2S audio signal Interface > - DAC_BCK : IC501_Pin E1 --> IC601_Pin23 - DAC_LRCK : IC501_Pin D1 --> IC601_Pin22 (44.1 kHz) - DAC_DATA : IC501_Pin E2 --> IC601_Pin24 - DAC_MCLK : IC501_Pin D2 --> IC401_Pin44  If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 3) Check if “Digital audio AMP block” on Item 5-2 is normal. 5-1-3. Service hint (Any picture / Remark) P/UP IC407 LC78615E DSP IC501 (New) MLC3730 MCS_MCLK (16.93 MHz) M 176PIN BGA MCS_BCK(1.4 MHz) MCS_DATA_OUT Audio DSP-1 USB 2.0 OTG Main Processor Audio DSP-0 DSP SRAM29KB MCS_LRCK(44.1 KHz) USB 1.1 133Mhz I-Cache 8KB ARM 16KB DSP SRAM29KB Host/Device 926EJS I-Cache D-Cache 8KB 133Mhz I-Cache 8KB 400Mhz 16KB SRAM (10K) D-Cache D-Cache 8KB SDRAM I2S (7.1ch) Controller Boot ROM (20KB) GDMA 2ch SPDIF (Rx, Tx) Interrupt controller ADPCM CDROM x8 speed Decoder PLL ADC (12bit*5ch) RTC & Wake up GDMA 3ch Clock Controller Timer, Watchdog UART 4ch (Max) Reset Controller NAND Controller GPIO (72 Max) I2C 2ch within BCH codec 14bits ECC SPI 4ch (Max) SDHC-SDIO 4ch (Max) Test Controller < Waveform of I2S audio interface signals > FR,FL TAS5624LA 12.288 MHZ PWM TAS5548 Woofer TAS5624LA < I2S Signal Flow > 3-11 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO SOUND There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according to the following guide. 5-2. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS) 5-2-1. Solution Please check and replace IC701, IC702 on MAIN board. 5-2-2. How to troubleshoot (Countermeasure) 1) Check PWM_FL±, PWM_FR± & PWM_SW± signals from IC601 to IC701 & 702 each input function.  If no signal, check if I2S audio signals are entered to IC601. Refer to “I2S audio signal interface” on Item 5-1. 2) Check PVDD.  If PVDD is abnormal, check the SMPS. 3) Check +12 V for driving the gate of AMP IC. a. All the powers are normal, but if +12 V is low, there is possible for AMP IC to be damaged. b. Remove L710, L711, L712 and L713 one by one. When removed a inductance, if +12 V is recovered, the IC connected to it was damaged. c. Replace the IC with a new one. 4) Check the impedance between IC701/IC702_OUT_A/OUT_B & GND. a. If the impedance is 0 Ω, the IC must be damaged. b. After removing the heat sink, replace it with a new one. 5-2-3. Service hint (Any picture / Remark) L711 IC702 L712 L710 IC701 L713 < Signal check point > 3-12 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the USB FUNCTION, repair the set according to the following guide. 5-3. IN THE USB FUNCTION 5-3-1. Solution Please check and replace IC501 on MAIN board & IC302 on USB board. 5-3-2. How to troubleshoot (Countermeasure) 1) Check +5V_USB to USB board.   If the USB LED are turned on, the voltage is okay, if so not, check +5.6 V to pin6 of CN302. 2) Check USB D1± or USB D2± from MAIN board to USB board. a. Check 2.0_D1±signals(pin U7, U8 ) or 1.1_D1± signals(pin A7, A8 ) to IC501. b. Check USB± signals to CN302(pin1, 2, 4, 5).   If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one. 3) Check if “Digital audio AMP block” on item 5-2 is normal. 5-3-3. Service hint (Any picture / Remark) DSP IC501 MLC3730 176PIN BGA USB1_D± USB2_D± Audio DSP-1 USB 2.0 OTG Main Processor Audio DSP-0 DSP SRAM29KB USB 1.1 ARM 16KB DSP SRAM29KB 133Mhz I-Cache 8KB D- to pin 1&4 of CN302 Host/Device 926EJS I-Cache D-Cache 8KB 133Mhz I-Cache 8KB 400Mhz 16KB SRAM (10K) D-Cache D-Cache 8KB SDRAM I2S (7.1ch) D+ to pin 2&5 of CN302 Controller Boot ROM (20KB) GDMA 2ch SPDIF (Rx, Tx) Interrupt controller ADPCM CDROM x8 speed Decoder PLL ADC (12bit*5ch) RTC & Wake up GDMA 3ch Timer, Watchdog UART 4ch (Max) Clock Controller Reset Controller < Waveform of USB D± signal > NAND Controller GPIO (72 Max) I2C 2ch within BCH codec 14bits ECC SPI 4ch (Max) SDHC-SDIO 4ch (Max) Test Controller FR,FL 12.288 MHZ TAS5624LA PWM TAS5548 Woofer TAS5624LA < USB function signal flow > 3-13 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the AUX FUNCTION, repair the set according to the following guide. 5-4. IN THE AUX FUNCTION 5-4-1. Solution Please check and replace IC201 on MAIN board. 5-4-2. How to troubleshoot (Countermeasure) 1) Check AUX_L/R signals to IC201 (Pin23, 24). 2) Check if MCS_BCK, MCS_LRCK & MCS_MCLK are entered from IC501 to IC201. 3) Check if ADC_DATA is entered from IC201 to IC501.  If no signal, check +5 V & +3.3 V(ADC) for IC201. If is NG, replace it a new one. 4) Check the following I2S signal flow from IC801 to IC602. (Refer to Item 5-1.)  If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.  If AMP is damaged, replace it with a new one. 5-4-3. Service hint (Any picture / Remark) MCS_MCLK to R220 DSP IC501 MCS_LRCK to R219 AUX_R to R227 MLC3730 176PIN BGA AUX IC201 CS5346 USB 2.0 OTG Main Processor Audio DSP-0 Audio DSP-1 DSP SRAM29KB MCS_BCK to R216 AUX _L/R USB 1.1 Host/Device ARM 16KB 926EJS I-Cache DSP SRAM29KB 133Mhz I-Cache 8KB 133Mhz I-Cache 8KB D-Cache 8KB AUX_L to R226 SRAM (10K) 400Mhz 16KB D-Cache 8KB D-Cache SDRAM Controller Boot ROM (20KB) GDMA 2ch I2S (7.1ch) ADC_DATA to R215 SPDIF (Rx, Tx) Interrupt controller ADPCM CDROM x8 speed Decoder PLL ADC (12bit*5ch) RTC & Wake up < Signal check point > GDMA 3ch Clock Controller Timer, Watchdog UART 4ch (Max) Reset Controller NAND Controller GPIO (72 Max) I2C 2ch within BCH codec 14bits ECC SPI 4ch (Max) SDHC-SDIO 4ch (Max) Test Controller FR,FL TAS5624LA 12.288 MHZ PWM TAS5548 Woofer TAS5624LA < AUX function signal flow > 3-14 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the TUNER FUNCTION, repair the set according to the following guide. 5-5. IN THE TUNER FUNCTION 5-5-1. Solution Please check and replace IC201, TU500 on MAIN board. 5-5-2. How to troubleshoot (Countermeasure) 1) Check if TUNER_LR is entered from Pin1, 3 of TU500 to IC201(Pin26, 27).   If no signals, check +3.3 V for tuner power.   Check if the tuner control signals (CLK, DAT, CE, RST, SLT) are entered from IC501 to TU500. If it doesn’t work, replace TUNER with a new one. 2) Check if MCS_BCK, MCS_LRCK, & MCS_MCLK are entered from IC501 to IC201. 3) Check if ADC_DATA is entered from IC201 to IC501.   If no signal, check +5 V & +3.3 V(ADC) for IC201. If is NG, replace it with a new one. 4) Check the following I2S audio signal flow from IC501 to IC601. (Refer to Item 5-1.)   If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.   If AMP is damaged, replace it with a new one. 5-5-3. Service hint (Any picture / Remark) DSP IC501 MLC3730 176PIN BGA TUNER_R to C215 TUNER_L to C214 TUNER TUNER_L/R IC201 Audio DSP-1 A CS5346 USB 2.0 OTG Main Processor Audio DSP-0 DSP SRAM29KB USB 1.1 133Mhz I-Cache 8KB ARM 16KB DSP SRAM29KB Host/Device 926EJS I-Cache D-Cache 8KB 133Mhz I-Cache 8KB SRAM (10K) 400Mhz 16KB D-Cache 8KB D-Cache SDRAM I2S (7.1ch) Controller Boot ROM (20KB) GDMA 2ch SPDIF (Rx, Tx) Interrupt controller ADPCM CDROM x8 speed Decoder PLL ADC (12bit*5ch) RTC & Wake up GDMA 3ch Clock Controller Timer, Watchdog UART 4ch (Max) Reset Controller NAND Controller GPIO (72 Max) I2C 2ch < Signal check point > within BCH codec 14bits ECC SPI 4ch (Max) SDHC-SDIO 4ch (Max) Test Controller FR,FL 12.288 MHZ TAS5624LA PWM TAS5548 Woofer TAS5624LA < TUNER IN function signal flow > 3-15 Downloaded from www.Manualslib.com manuals search engine ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the PORTABLE FUNCTION, repair the set according to the following guide. 5-6. IN THE PORTABLE FUNCTION 5-6-1. Solution Please check and replace IC201 on MAIN board. 5-6-2. How to troubleshoot (Countermeasure) 1) Check PT_L/R signals to IC201 (Pin9, 10). 2) Check if MCS_BCK, MCS_LRCK, & MCS_MCLK are entered from IC501 to IC201. 3) Check if ADC_DATA is entered from IC201 to IC501.  If no signal, check +5 V & +3.3 V(ADC) for IC201. If NG, replace it a new one. 4) Check the following I2S signal flow from IC501 to IC601. (Refer to Item 5-1.)  If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.  If AMP is damaged, replace it with a new one. 5-6-3. Service hint (Any picture / Remark) PTB_L to R229 DSP IC501 PTB_R to R228 MLC3730 176PIN BGA PTB_L/R IC201 Audio DSP-1 USB 2.0 OTG CS5346 Main Processor Audio DSP-0 DSP SRAM29KB Portable USB 1.1 Host/Device ARM 16KB DSP SRAM29KB 133Mhz I-Cache 8KB 926EJS I-Cache D-Cache 8KB 133Mhz I-Cache 8KB SRAM (10K) 400Mhz 16KB D-Cache 8KB D-Cache SDRAM I2S (7.1ch) Controller Boot ROM (20KB) GDMA 2ch SPDIF (Rx, Tx) Interrupt controller ADPCM CDROM x8 speed Decoder PLL GDMA 3ch ADC (12bit*5ch) Timer, Watchdog RTC & Wake up UART 4ch (Max) Clock Controller < Signal check point > Reset Controller NAND Controller GPIO (72 Max) I2C 2ch within BCH codec 14bits ECC SPI 4ch (Max) SDHC-SDIO 4ch (Max) Test Controller FR,FL 12.288 MHZ TAS5624LA PWM TAS5548 Woofer TAS5624LA < PORTABLE function signal flow > 3-16 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 1. POWER (SMPS) No 5.6 VA YES NO F901 normal? Replace F901 (Use the same fuse). YES NO BD901 normal? Replace BD901. YES NO TH901(TH903) normal? Replace TH901. YES Is Vcc NO (10 V ~ 18 V) supplied to D902 normal? IC901 Pin7? NO YES Check or replace D902. NO D933 / D934 normal? Replace D933 / D934. YES Is there NO about 2.5 V at Replace IC941. IC941 Pin1? YES NO D935 normal? Replace D935. YES NO D932 normal? Replace D932. YES NO D931 normal? Replace D931. YES Power line of main PCB is short. 3-17 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE No PVDD YES NO F901 normal? Replace F901 (Use the same fuse). YES NO BD901 normal? Replace BD901. YES NO TH901(TH903) normal? Replace TH901. Is Vcc NO (10 V ~ 18 V) supplied to NO D903 normal? IC911 Pin4? YES YES Check or replace D903. NO Q911 base "H"? YES • Check P-CTRL "H" signal from MCS. • Check PC902. Check or replace Q911. NO Q901 normal? Replace Q901. YES NO D951 normal? Replace D951. YES Is there about 2.5 V NO at IC951 Pin1? Replace IC951. YES Power line of main PCB is short. 3-18 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE No 12 V YES Is Vcc (15 V) NO Check or replace D935. supplied to IC931? YES NO Check P-CTRL “H” signal IC931 Pin4 “H”? from MCS. YES Check or replace IC931. No VFD YES NO D931 normal? Check or replace D931. YES NO ZD931 normal? Check or replace ZD931. YES NO Q501 / Q502 normal? Check or replace Q501 / Q502. YES Check or replace VFD. 3-19 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 2. MCS PART CHECK MCS PART CHECK YES Check if NO voltage of CN501 Pin7 Refer to SMPS troubleshooting. is 5.6 VA. YES Check if IC510 NO have 3.3 V output. Check and change IC510. YES Check if IC508 NO have 1.2 V output. Check and change IC508. YES X501: 32.768 kHz, X500: 24 MHz, Check the operation. YES OK 3. IC504(M24C16) CHECK CHECK IC501 PIN. YES NO NO Check pinC2, pinB1 Check MCS Refer to MCS troubleshooting. DATA : CLK voltage 3.3 VA. YES YES NO Check MCS. Replace MCS. YES OK OK 3-20 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 4. FLD DISPLAY CHECK FLD DISPLAY CHECK YES Check NO CN501 Pin13,14,15 input Refer to SMPS troubleshooting. voltage. YES Check if both end voltage of FL+, FL- are over 2.9 V VKK : over 25.6 V. YES Check CN301 connection and power NO Pin1, 2, 3(FL+, FL-, VKK), Check CN301 connection. Pin8(5.6 V). YES Check each YES Pin voltage. YES OK Check IC301(MC3401) voltage NO Pin30 VKK: -25.8 V If voltage is not 3.4 V. Pin13, 43: 3.3 V. YES NO YES Check IC301. Replace IC301. YES OK Check IC501->IC301 NO data communication Check input data STB/ DATA/ CLK IC501 Pin F1,F2,G1. YES Check output data IC501 Pin D2. YES YES NO FLD light on? Check IC501. Replace IC501. YES YES OK OK 3-21 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 5. PWM MODULATION CHECK PWM MODULATION PART CHECK YES Check NO Refer to CN501 Pin7,8 (5.6 V) SMPS troubleshooting. YES • Check IC601(TAS5548) VDD 3.3 V - Pin9,14.35,50. • Check X601 (12.288 MHz). YES Check NO NO Check X601 X601(12.288 MHz) Replace X601(12.288 MHz). (12.288 MHz). operation. YES YES Check IC601 Pin21 CLK OK input. YES Check IC501 (MLC3730) Check line NO resistor output NO Pin B3: RESET Replace R53E,R53C,R53B. Pin A1: SDA RST: R53E / SCL: R53C / SDA: R53B. Pin A2: SCL output. YES YES OK A 3-22 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE A YES Check IC601(TAS5548) NO Check NO CD Assy communication Refer to input data Pin22, 23, 24. CD troubleshooting. Pin24 PWM wave. YES YES Check NO Check each line IC601 input resistor output. data. YES OK Check PWM modulator output NO NO FL: Pin48(-),49(+) Replace IC601. Check IC601. FR: Pin46(-),47(+). Other output check. YES YES OK OK 3-23 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 6. POWER AMP PART CHECK POWER AMP PART CHECK YES Check NO CN501 Pin10: +12 V Refer to SMPS troubleshooting. Pin1, 2, 3: 36 V. YES Check IC701, IC702 Pin29, 30, 31, 36, 37, 38 input voltage. YES Check IC701, IC702 NO Check each line resistor output voltage. Pin2: +12 V input. YES Check PWM Modulator input IC701 Pin5, 6, 14, 15 / IC702 Pin5, 6. YES Check IC701, IC702 Pin27, 28, 32, 35, 39, 40. YES Check output NO Replace the coil. line coil. YES OK 3-24 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 7. TUNER / AUX FUNCTION CHECK FUNCTION CHECK YES Check IC201 NO (CS5346) Pin23, 24, Check JK200,TU500. 26, 27 input. YES Check IC201 NO Check IC201 NO (CS5346) Pin41 output Pin5: +3.3 V Check CN501 Pin7,8: +5.6 V. data. Pin14: +5 V. YES YES Check IC201 Check IC201 Check NO NO Pin41: SDOUT, Pin5: +3.3 V, IC501(MLC3730) Pin42: SLCK, Pin6: High, input data. Pin43: LRCK, Pin14: +5 V. Pin44: MCLK. YES YES IC501(MLC3730) Replace IC201. output data. YES OK 3-25 Downloaded from www.Manualslib.com manuals search engine AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 8. TUNER FUNCTION CHECK TUNER FUNCTION CHECK YES Check tuner NO Check tuner module voltage module(TU500) operation. (Pin4: +3.3 V). YES Check IC501 Pin P8, P10, P11, T15. NO Check tuner module data. YES Refer to function check. 3-26 Downloaded from www.Manualslib.com manuals search engine CDP ELECTRICAL TROUBLESHOOTIHG GUIDE 1. CD FUNCTION CD FUNCTION YES Can the NO NO Is Motor_open/close disc insert? Is load +,- ok? OK? (IC408 Pin6,7) YES YES YES Check IC408. NO Is Motor ok? Check loading motor. (about 12 ) Focus/ NO NO IM driving (Focus and NO Check IC408 Disc reading tracking/sled signal is ok? tracking) is ok? (Motor drive IC). is ok? YES YES Is the MD(CN404 NO Check IM Is no signal at spk? Pin22) about 190 mV? (pick-up). YES Check the signal of NO Check Vcc of IC407. IC407 Pin52,53,54. YES Check the signal (16.0344 MHz) NO NO Replace Cristal Check Cristal (X400). at IC407 (X400). Pin51. YES Check IC501 NO input/output and Replace IC501. control line. YES Refer to function check. 3-27 Downloaded from www.Manualslib.com manuals search engine CDP ELECTRICAL TROUBLESHOOTIHG GUIDE 2. DOUBLE USB FUNCTION USB FUNCTION YES Plug-in usb device. YES NO NO Display “NO USB”. Check USB_5V. Check CN302. YES YES Check USB_D+/D- NO Display “READ”. (R380,R381/ Check USB jack (JK301/ JK302). R382,R383). YES YES Check IC501 NO Display “NO FILE”. Replace IC501. (Pin U7,U8/ A7,A8). YES Check usb audio file in usb device (MP3, WMA file is playable) 3-28 Downloaded from www.Manualslib.com manuals search engine WAVEFORMS OF MAJOR CHECK POINT 1. SDRAM CLK IC502 PIN38 1 IC502 PIN53 DATA 2 ADDRESS IC502 PIN35 3 CS IC503 PIN1 4 2. SERVO 5 CD-16 M IC501 PIN M1 3-29 Downloaded from www.Manualslib.com manuals search engine 3. AUDIO PATH CD_BCK IC501 PIN N4 6 IC501 PIN N1 CD_LRCK 7 CD_DATA 8 IC501 PIN N2 DAC_MCLK IC501 PIN D2 9 DAC_BCK 10 IC501 PIN E1 DAC_LRCK IC501 PIN D1 11 DAC_DATA IC501 PIN E2 12 3-30 Downloaded from www.Manualslib.com manuals search engine 4. USB USB_5 V 13 D+ IC501 PIN A8 D- IC501 PIN A7 14 3-31 Downloaded from www.Manualslib.com manuals search engine 3-32 Downloaded from www.Manualslib.com manuals search engine WIRING DIAGRAM AUX 1. [Total CNT : 6 ea] SPK TERMINAL JACK MODULE TUNER 1. FFC Cable Power cord MAIN FRONT : 1 EA 15P 1 CD MD MAIN MD: 2 EA MAIN BT module: 1 EA 10P 23P 2. Harness Single SMPS MAIN : 1 EA MAIN USB: 1 EA MAIN + CD 8P 19P SMPS : Harness BT USB(2EA) + FRONT : FFC 3-33 3-34 Downloaded from www.Manualslib.com manuals search engine BLOCK DIAGRAMS 1. SYSTEM BLOCK DIAGRAM TUNER_L/R A PWM_RST TUNER FL± FL IC701 TUNER_RST/CE/DAT/CLK FR ± AMP IC PWM DAT/CLK TAS5624LA IC601 FR REMOCON/KEY TAS5548 PWM_MUTE PWM IC702 SW SW IC301 DAC_BCK/LRCK/DATA AMP IC VFD ABOV TAS5624LA VFD_STB/CLK/DO IM(CMS-S79RFVC6)  AMP_PDN OP_SW,CL_SW AMP_OTW/SD/CLIP/AMP PROTECT P/UP DSP IC501 CP_RESET/SCL/SDA F±/TR± IC511 MOT_MUTE/CLOSE/OPEN IC408 IPOD 2.0C SLED± AM5890 MLC3730 SPIN ± Motor Drive M LOAD ± 176PIN BGA RX/TX/RTS/CTS/RST/SDA/SCL BT4.0(New) SPDO/SLDO/FOD/TRD Audio DSP-1 CD_16M USB 2.0 OTG DSP SRAM29KB IC407 Main Processor Audio DSP-0 LD/VREF LC78615E CD_MCK/RW/DIN_OUT/BUSY USB 1.1 133Mhz I-Cache 8KB ARM 16KB DSP SRAM29KB Host/Device 926EJS I-Cache D-Cache 8KB USB1_D± A,B,C,D,E,F/ PD (New)  CD_RESB 133Mhz I-Cache 8KB SRAM (10K) 400Mhz 16KB  D-Cache D-Cache 8KB USB2_D± CD_BCK/CD_LRCK/CD_DATA SDRAM I2S (7.1ch) Controller Boot ROM (20KB) GDMA 2ch SPDIF (Rx, Tx) DRM_SEL/DRM_CKE/DRM_RAS 8 MB DRM_CLK/DRM_CAS/DRM_WEN Interrupt ADPCM IC502 SDRAM ADC_RST/CLK/DAT controller D0~D15/A0~A11/A13~A16 TUNER CDROM x8 speed TUNER_L/R Decoder PLL SF_DI/DO IC503 FLASH A IC201 ADC (12bit*5ch) RTC & Wake up Clock Controller W25Q16FVSSIG AUX AUX_L/R GDMA 3ch SF_CS/CLK(SPI) CS5346 Timer, Watchdog UART 4ch (Max) ADC_DATA Reset Controller 2 MB NAND Controller GPIO (72 Max) I2C 2ch PTB_L/R within BCH codec DAC_BCK/DAC_LRCK/DAC_MCLK 14bits ECC SPI 4ch (Max) SDHC-SDIO 4ch (Max) Test Controller IC504 FLASH SF_DI/DO Portable W25Q80DVSSIG SF_CS/CLK(SPI) PTB_SENSE 1 MB 3-35 3-36 Downloaded from www.Manualslib.com manuals search engine 2. SMPS BLOCK DIAGRAM FL+ Snubber + Block FL- Vkk CN901 T R Main A 12 V LDO 12 V SMPS IC N Block S On/Off 5.6 VA Noise Y-Cap Feedback Filter Photo coupler Block (X-cap Y-Cap P.CTL On/Off Photo coupler Line Filter) Snubber Block T F R U A S E AMP N SMPS IC PVDD S With FET Feedback Block Photo coupler 3-37 3-38 Downloaded from www.Manualslib.com manuals search engine 3. AUDIO PATH BLOCK DIAGRAM FR,FL TAS5624LA 12.288 MHz 230Wx2 PORTABLE  PORTABLE DAC_LRCK  DAC_BCK  PWM TUNER  ADC DAC_MCLK TAS5548 Tuner CS5346 DAC_LRCK  (SLAVE) DAC_BCK  Woofer  AUX  DAC_DATA  TAS5624LA Auxin 240Wx1 AMPBlock ADC_DATA  CD_BCK   RF CD_LRCK  MLC3730  LC78615E  CD_DATA  (176PIN) DSP Block 24MHz 32.768 KHz  3-39 3-40 Downloaded from www.Manualslib.com manuals search engine 4. POWER DIAGRAM VKK 25 mA IC30 370 mA VFD RMC VFD FL ± 5 mA 3 mA Diode Diode delete delete P_CTRL TU500 IC407 IC601 TUNER RF IC TAS5548 YST996 2.668 A RS1G IC507 DVCC3.3 V 70 mA 150 mA 10 mA +5.6 VA LDO TJ4220 To 3965 or 37102 IC302 +5 V USB PWR LM37102D 1 A +3.3 V 10 mA IC408 ADC MOTOR Pick up IC201 AM3053S CS5346 IC202 10 mA 20 mA DVCC_5 V 450 mA 80 mA LDO VDD33 SMPS LM37102D IC501 VDDCORE 550 mA MCS IC504 IC506 IC505 MLC3730 IC502 IC503 Bluetooth CP Chip EEPROM RESET PWR SENS SDRAM FLASH Option Option 24CS16 AZ7027 AZ7027 EM639165 32Mb USB HUB USB HUB IC510 +3.3 VA LDO 15mA 20 mA 38 mA 7 mA 2 mA 2 mA 2 mA 20 mA AZ1117BH- ADJ 601 mA 160 mA IC508 +1.2 VA RS1G 1SS355 3EA AZ1117BH- 1.2 +4.8 VA IC701 8 LED FAN X 1 AMP +12 V 310 mA 100 mA 110 mA 100 mA 3-41 3-42 Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION. THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER NOTE : 1. Shaded( ) parts are critical for safety. Replace only with specified part number. 1. SMPS CIRCUIT DIAGRAM CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND 2. Voltages are DC-measured with a digital voltmeter during Play mode. FROM THE LG CORPORATION. ALL COMPONENTS PERFORMANCE IMPROVEMENT CHANGES INTO SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL THE SET IS NOT DELAYED UNTIL THE NEW SERVICE TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL LITERATURE IS PRINTED. 12 11 10 9 8 7 6 5 4 3 2 1 SMPS EAX66343021-SD_Rev0_1.0 2015. 07. 28 A B C D E F G H I J K L M N O P Q R S T 3-43 3-44 Downloaded from www.Manualslib.com manuals search engine 2. MAIN - DSP CIRCUIT DIAGRAM 12 11 10 9 4 8 9 14 13 2 11 7 10 12 6 5 7 1 6 3 5 8 4 3 2 1 DSP : WAVEFORM NUMBER EAX66325701-SD(#01)_Rev6_1.1 2014. 12. 30 A B C D E F G H I J K L M N O P Q R S T 3-45 3-46 Downloaded from www.Manualslib.com manuals search engine 3. MAIN - SERVO CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 SERVO EAX66325701-SD(#02)_Rev6_1.1 2014. 12. 30 A B C D E F G H I J K L M N O P Q R S T 3-47 3-48 Downloaded from www.Manualslib.com manuals search engine 4. MAIN - ADC/ PWM CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 ADC/PWM EAX66325701-SD(#03)_Rev6_1.1 2014. 12. 30 A B C D E F G H I J K L M N O P Q R S T 3-49 3-50 Downloaded from www.Manualslib.com manuals search engine 5. MAIN - AMP CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 AMP EAX66325701-SD(#04)_Rev6_1.1 2014. 12. 30 A B C D E F G H I J K L M N O P Q R S T 3-51 3-52 Downloaded from www.Manualslib.com manuals search engine 6. FRONT CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 FRONT EAX65586201_Rev2_1.2 2015. 01. 29 A B C D E F G H I J K L M N O P Q R S T 3-53 3-54 Downloaded from www.Manualslib.com manuals search engine CIRCUIT VOLTAGE CHART 1. ICs Location Pin No. SPEC EE Mode (V) Margin Playback Mode (V) Margin Location Pin No. SPEC EE Mode (V) Margin Playback Mode (V) Margin MAIN Board IC503 Flash (W25Q64FVSSIG) IC201 ADC(CS5346) 8(VDD) 2.7~3.6 3.24 - 3.24 - 5(VLC) 3.13~5.25 3.24 0.11 3.24 0.11 IC505 P-SENSE(AZ7027RTRE1) 14(VA) 4.75~5.25 5.08 0.17 5.08 0.17 1(VCC) <18 3.6 - 3.6 - 36(VLS) 3.13~5.25 3.24 0.11 3.24 0.11 IC506 RESET(AZ7027RTRE1) 46(VD) 3.13~3.47 3.24 0.11 3.24 0.11 1(VCC) <18 3.15 - 3.16 - IC202 LDO (LM37102D-ADJ) IC507 LDO (TJ4220GDP-ADJ) 2(VIN) 2.25~16 5.68 3.43 5.67 3.42 3(VIN) 2.5~6 4.91 - 4.88 - 3(VOUT) - 5.08 - 5.08 - 6(VOUT) - 3.25 - 3.25 - IC407 SERVER (LC78615E) IC510 LDO (AZ1117BH-ADJ) 18(AVDD) 3.0~3.6 3.24 0.24 3.24 0.24 2(OUTPUT) <15 5.67 - 5.66 - 28(VVDD1) 3.0~3.6 3.24 0.24 3.24 0.24 3(INPUT) <15 4.02 - 4.02 - 33(DVDD) 3.0~3.6 3.24 0.24 3.24 0.24 IC511 IPOD(MFI337S3959) 59(DVDD) 3.0~3.6 3.24 0.24 3.24 0.24 8(VCC) 1.6~5.5 3.24 3.24 - 63(XVDD) 3.0~3.6 3.24 0.24 3.24 0.24 IC601 PWM (TAS5548DGG) IC408 MOTOR(AM5890) 9(AVDD) 2.97~3.63 3.25 - 3.24 - 8(VCC1) 4.3~13.2 5.08 - 5.08 - 14(DVDD2_CORE) 2.97~3.63 3.24 - 3.23 - 19(VCC2) 4.3~Vcc1 5.08 - 5.07 - 35(DVDD1_CORE) 2.97~3.63 3.24 - 3.23 - IC501 MPEG(MLC3730) 50(AVDD_PWM) 2.97~3.63 3.24 - 3.23 - A4 (VDD33ADC) 3.0~3.6 3.24 - 3.24 - IC701 AMP(TAS5624LA) B7 (VDDUSB11) 3.0~3.6 3.24 - 3.24 - 1(GVDD_AB) 10.8~13.2 11.96 - 11.96 - A9 (VDD12CORE) 1.08~1.32 1.18 - 1.18 - 2(VDD) 10.8~13.2 12.12 - 12.12 - A10 (VDD33IO) 3.0~3.6 3.24 - 3.24 - 22(GVDD_CD) 10.8~13.2 11.96 - 11.96 - E9 (VDD12CORE) 1.08~1.32 1.18 - 1.18 - 29,30,31(PVDD_CD) 12~34 36.5 - 36.5 - D14 (VDD33IO) 3.0~3.6 3.24 - 3.24 - 36,37,38(PVDD_AB) 12~34 36.5 - 36.5 - J14 (VDD12CORE) 1.08~1.32 1.18 - 1.18 - FRONT Board P14 (VDD33IO) 3.0~3.6 3.24 - 3.24 - IC301 VFD (MC3401L) T16(VDD30RTC) 2.75~3.3 3.15 - 3.16 - 13(VDD) 3.0~5.5 3.24 -1.26 3.24 -1.26 T10 (VDD12ALIVE) 1.08~1.32 1.18 - 1.18 - 43(VDD) 3.0~5.5 3.24 -1.26 3.24 -1.26 U9 (VDD33OSC) 3.0~3.6 3.24 - 3.24 - 30(VEE) VDD-35 -22.4 -9.36 -22.5 -9.26 P9 (VDD12USB20) 1.08~1.32 1.19 - 1.19 - IC302 LDO (LM37102D) U6 (VDD33USB20) 3.0~3.6 3.24 - 3.24 - 2(VIN) 2.25~16 5.69 3.44 5.68 3.43 U5 (VDD33USB20) 3.0~3.6 3.24 - 3.24 - 3(VOUT) - 5.05 - 5.05 - U4 (VDD12CORE) 1.08~1.32 1.18 - 1.18 - P4 (VDD33IO) 3.0~3.6 3.24 - 3.24 - J4 (VDD12INT) 1.08~1.32 1.18 - 1.18 - D4 (VDD33IO) 3.0~3.6 3.24 - 3.24 - IC502 SDRAM (W9812G6JH-6) 1(VDD) 3.0~3.6 3.24 - 3.24 - 3(VDDQ) 3.0~3.6 3.24 - 3.24 - 9(VDDQ) 3.0~3.6 3.24 - 3.24 - 14(VDD) 3.0~3.6 3.24 - 3.24 - 27(VDD) 3.0~3.6 3.24 - 3.24 - 43(VDDQ) 3.0~3.6 3.24 - 3.24 - 49(VDDQ) 3.0~3.6 3.24 - 3.24 - 3-55 3-56 Downloaded from www.Manualslib.com manuals search engine 2. CAPACITORS Value EEMode Play back Loca. No. Capacitor Voltage_ Positive Negative Positive Negative (uF) Gap Margin Gap Margin Spec (+) (-) (+) (-) MAIN Board C244 47 uF 16 V 5.08 V 0V 5.08 V 10.92 V 5.08 V 0V 5.08 V 10.92 V C402 100 uF 16 V 5.08 V 0V 5.08 V 10.92 V 5.08 V 0V 5.08 V 10.92 V C404 47 uF 16 V 3.24 V 0V 3.24 V 12.76 V 3.23 V 0V 3.23 V 12.77 V C429 220 uF 10 V 5.08 V 0V 5.08 V 4.92 V 5.07 V 0V 5.07 V 4.93 V C479 220 uF 10 V 1.68 V 0V 1.68 V 8.32 V 1.68 V 0V 1.68 V 8.32 V C481 47 uF 16 V 3.24 V 0V 3.24 V 12.76 V 3.23 V 0V 3.23 V 12.77 V C501 1000 uF 6.3 V 3.16 V 0V 3.16 V 3.14 V 3.16 V 0V 3.16 V 3.14 V C526 47 uF 16 V 1.19 V 0V 1.19 V 14.81 V 1.19 V 0V 1.19 V 14.81 V C541 47 uF 16 V 1.19 V 0V 1.19 V 14.81 V 1.19 V 0V 1.19 V 14.81 V C579 10 uF 16 V 3.24 V 0V 3.24 V 12.76 V 3.24 V 0V 3.24 V 12.76 V C618 100 uF 16 V 3.25 V 0V 3.25 V 12.75 V 3.25 V 0V 3.25 V 12.75 V C624 100 uF 16 V 12.12 V 0V 12.12 V 3.88 V 12.12 V 0V 12.12 V 3.88 V C643 100 uF 16 V 5.08 V 0V 5.08 V 10.92 V 5.08 V 0V 5.08 V 10.92 V C724 470 uF 50 V 37.5 V 0V 36 V 12.5 V 36 V 0V 37.5 V 12.5 V C727 470 uF 50 V 37.5 V 0V 36 V 12.5 V 36 V 0V 37.5 V 12.5 V C737 470 uF 50 V 37.5 V 0V 36 V 12.5 V 36 V 0V 37.5 V 12.5 V FRONT Board C310 220 uF 10 V 3.24 V 0V 3.24 V 6.76 V 3.24 V 0V 3.24 V 6.76 V C316 100 uF 16 V 3.16 V 0V 3.16 V 12.84 V 3.14 V 0V 3.14 V 12.86 V C377 47 uF 50 V -18.1 V 0V -18.1 V 68.1 V -18.2 V 0V -18.2 V 68.2 V Location No. SPEC Test (V) SMPS Board C904 180 uF/450 V 315 C909 22 uF/50 V 14.7 C911 47 uF/50 V 18 C914 10 uF/50 V 17.4 C931 220 uF/16 V 2.9 C932 47 uF/50 V 22.9 C933/C934 1000 uF/16 V 5.5 C935/C936 100 uF/50 V 13.5 C954/C955 2200 uF/50 V 29 V 3-57 3-58 Downloaded from www.Manualslib.com manuals search engine PRINTED CIRCUIT BOARD DIAGRAMS 1. SMPS P.C.BOARD (TOP VIEW) (BOTTOM VIEW) NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. 3-59 3-60 Downloaded from www.Manualslib.com manuals search engine 2. MAIN P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-61 3-62 Downloaded from www.Manualslib.com manuals search engine 3. FRONT P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-63 3-64 Downloaded from www.Manualslib.com manuals search engine APPENDIX MECHANISM (DP17TM3) CONTENTS DECK MECHANISM DISASSEMBLY 1. Cover Top ...................................................................................................................................................2 2. Clamp Assembly .........................................................................................................................................2 2-1. Plate .....................................................................................................................................................2 2-2. Magnet .................................................................................................................................................2 2-3. Clamp...................................................................................................................................................2 3. Tray Disc .....................................................................................................................................................3 4. Pick Up Assembly .......................................................................................................................................4 5. Base Up/Down ............................................................................................................................................4 6. Belt Loading ................................................................................................................................................5 7. Gear Pulley .................................................................................................................................................5 8. Gear Loading ..............................................................................................................................................5 9. Guide ...........................................................................................................................................................5 10. Deck PCB Assembly ...................................................................................................................................5 11. Motor Assembly ..........................................................................................................................................5 12. FFC Cable ...................................................................................................................................................5 DECK MECHANISM EXPLODED VIEW (DP17TM3) ...........................................................................................6 1 Downloaded from www.Manualslib.com manuals search engine DECK MECHANISM DISASSEMBLY (S1) 1 Cover Top 1 Clamp Assembly 2 3 Clamp Assembly Plate Magnet 2 Clamp (L1) < Figure A > < Figure B > 1. Cover Top 2. Clamp Assembly 1) Remove the 2 screws (S1). 1) Place the Clamp Assembly as Figure B. 2) Unhook the 4 Locking Tabs (L1) by using a 2) Bending the Cover Top in direction of flat-head screwdriver. arrow (2) as Figure B. 3) Remove the Cover Top. 3) Separate the Clamp Assembly from the Cover Top. 2-1. Plate 1) Turn the Plate to a counterclockwise direction and then lift up the Plate. 2) Remove the Plate. 2-2. Magnet Remove the Magnet. 2-3. Clamp Remove the Clamp. 2 Downloaded from www.Manualslib.com manuals search engine DECK MECHANISM DISASSEMBLY Emergency eject hole MD Sub (H1) Assembly 1 Tray Disc 1 2 2 1 < Bottom side view > 3 Tray Disc < Figure D > 2 Tray Disc 3) Grasp the both sides of the Tray Disc and lift it up as Figure D, and then pull the Tray Disc < Figure C > until it is separated from the MD Sub Assembly completely. 3. Tray Disc 1) Insert and push a flat-head screwdriver in the Guide Emergency eject hole (H1) at the right side, so that the Tray Disc is ejected about 15 ~ 20 mm. 2) Pull the Tray Disc until it is locked. Tray Disc < Figure E > Note • When reassembling place the Guide as Figure E. 3 Downloaded from www.Manualslib.com manuals search engine DECK MECHANISM DISASSEMBLY Gasket Tape Base Up/Down 1 (D) 2 RE B OR BR D LK N N Deck PCB (B) Assembly BK RE D (L2) 3 1 2 (H2) < Bottom side view > (S2) Base Main 3 5 Figure G-3 (C) (A) Guide Rubber FFC Cable Damper Pick Up 4 Assembly (B) Base Up/Down Figure G-1 Figure G-2 < Figure G > 5. Base Up/Down Unlock the Locking Tab (L2) in direction of arrow < Figure F > and then lift up the Base Up/Down to separate it from the Base Main. Note 4. Pick Up Assembly • When reassembling move the Guide in direction 1) Detach the Gasket Tape. of arrow (A) until it is positioned as Figure G-1. 2) Disconnect the wires (BLK, RED, BRN, ORN) • When reassembling insert the (B) portion of the from the Deck PCB Assembly by desoldering. Base Up/Down in the (C) portion of the Guide as 3) Remove the 4 screws (S2). Figure G-2. 4) Disconnect the FFC Cable from the Pick Up • When reassembling insert the (D) portion of the Assembly. Base Up/Down in the Hole (H2) of the Base Main as Figure G-3. 5) Remove the 4 Rubber Dampers. 4 Downloaded from www.Manualslib.com manuals search engine DECK MECHANISM DISASSEMBLY Base Main (A) Figure H-1 Guide (B) Gear Loading Gear Pulley (L3) Base Main < Bottom side view > Belt Loading (L4) RE B OR BR D LK N N RE BK D Deck PCB < Bottom side view > Motor < Bottom side view > Assembly Assembly Deck PCB (S3) Assembly < Figure H > 6. Belt Loading 10. Deck PCB Assembly Remove the Belt Loading. 1) Disconnect the wires (RED, BK) form the Deck PCB Assembly by desoldering. 7. Gear Pulley 2) Remove the 1 screw (S3). Unlock the Locking Tab (L3) in direction of arrow and then separate the Gear Pulley from the Base 3) Separate the Deck PCB Assembly from the Main. Base Main. 8. Gear Loading 11. Motor Assembly Remove the Gear Loading. Unlock the Locking Tab (L4) in direction of arrow and then separate the Motor Assembly 9. Guide from the Base Main. 1) Move the Guide in direction of arrow (A) as 12. FFC Cable Figure H-1. 2) Separate the Guide from the Base Main. Remove the FFC Cable. 5 Downloaded from www.Manualslib.com manuals search engine DECK MECHANISM EXPLODED VIEW (DP17TM3) 1439 1002 A001 1005 1001 1026 1003 1004 1030 1024 1437 1437 1024 1024 1012 1049 1437 1013 1016 1015 1024 1020 1011 A006 A005 1019 1043 1018 1045 1439 6 Downloaded from www.Manualslib.com manuals search engine
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