LG-LM-K3960A LG-LMS-K3960V

SERVICE MANUAL MODEL: LM-K3960A, LMS-K3960V3CD CHANGER KARAOKE SYSTEM SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. MODEL: LM-K3960A, LMS-K3960V [CONTENTS] ❍ SECTION 1. GENERAL • SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 • ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 • SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5 ❍ SECTION 2. ELECTRICAL SECTION • ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 • INTERNAL BLOCK DIAGRAM of ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 • BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 • SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21 • WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35 • PRINTED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37 ❍ SECTION 3. DVD PART ELECTRICAL • DVD ELECTRICAL TROUBLESHOOTIHG GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 • DVD SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15 • DVD PRINTED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23 ❍ SECTION 4. EXPLODED VIEWS • CABINET AND MAIN FRAME SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 • TAPE DECK MECHANISM (A/R & A/S : RIGHT A/R DECK) . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 • TAPE DECK MECHANISM (A/R & A/S : LEFT A/S DECK) . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5 • CD MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 ❍ SECTION 5. SPEAKER PART • SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1 ❍ SECTION 6. REPLACEMENT PARTS LIST • REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1 - 1-1 - SECTION 1. GENERAL ❏ SERVICING PRECAUTIONS I 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 let contact 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 cotton swab should be used, taking care not to distort this. Magnet Pressure Pressure How to hold the pick-up Cotton swab Conductive Sheet 6) Never attempt to disassemble the pick-up. Spring by 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. - 1-2 - I NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Using a pointed good conductor(such as driver). and for that reason components should be handled with care. When removing the laser pick-up from its conductive bag.). These components are sensitive to. Preparations 1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). and easily affected by. simply short the RESET jump wire on the inside of the volume knob for more than 3 seconds. If such static electricity is high voltage. display. To operate the RESET jump wire. 2. (This is because there is the possibility of damage by static electricity. VOLUME UP RESET jump wire VOLUME KNOB DOWN . Notes for repair 1) Before replacing a component part. it is necessary to unplug the power cord. 5) Workers should be grounded by an armband (1M Ω) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing. 3) The workbench should be covered with a conductive sheet and grounded. If you reset your unit. you must reenter all its settings(stations. measuring instruments and tools must be grounded. etc. or where there is excessive dust. therefore. the metal part of the soldering iron should be grounded. where strong magnetism is present. Armband Resistor (1 Mohm) Resistor (1 Mohm) Conductive Sheet CLEARING MALFUNCTION You can reset your unit to initial status if malfunction occur(button malfunction. timer) NOTE: 1. do not place the pick-up on the bag. in order to prevent static electricity changes in the clothing to escape from the armband. to avoid repair or storage where the temperature of humidity is high. pull the volume rotary knob and release it. If you wish to operate the RESET jump wire. clock. 2) The pick-up is composed of many optical components and other high-precision components.) 4) To prevent AC leakage. components can be damaged. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.1-3 - . static electricity. first disconnect the power supply lead wire from the unit 2) All equipment. Care must be taken. 2. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. which should be removed for potential shock reasons prior to applying power to the unit under test. Minimize bodily motions when handing unpackaged replacement ESD devices. drain off any electrostatic charge on your body by touching a known earth ground. 2. Such components commonly are called Electrostatically Sensitive Devices (ESD). 3. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices. GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT. aluminum foil or comparable conductive materials). 6. Immediately before removing the protective material from the leads of a replacement ESD device. 5. 4. to prevent electrostatic charge buildup or exposure of the assembly. WITHIN AN EQUILATERAL TRIANGLE. (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. . Immediately before handling any semiconductor component or semiconductor-equipped assembly. touch the protective material to the chassis or circuit assembly into which the device will by installed. 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. place the assembly on a conductive surface such as aluminum foil. obtain and wear a commercially available discharging wrist strap device. Use only an anti-static solder removal device. Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. Do not use freon-propelled chemicals. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. After removing an electrical assembly equipped with ESD devices.❏ ESD PRECAUTIONS I Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. 1. These can generate electrical charges sufficient to damage ESD devices. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. Alternatively. 7. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it.1-4 - . 8. AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 30 W + 30 W (4 Ω .0 MHz or 65 -74 MHz.H.0 V (p-p). JIS-WTD) 120 sec (C-60) 250 . 75 Ω (Pb)/(Pr) 0.D Frequency Response Signal-to-noise ratio DVD/VCD/CD player Frequency response (audio) Signal-to-noise ratio (audio) Signal-to-noise ratio (video) Dynamic range (audio) Video output S-video output Component Video output 40 .3 V (p-p). 75 Ω (Y) 1.108. THD 10 %) LM-K3565Q model .3 kg (LMS-K3960V/LMS-KW3960V/LMS-K3860V) 4.1800 Hz LM-K3960Q/LM-KW3960Q model .5 -108. Input Power Net Dimensions (W x H x D) Net Weight . 70 W (LM-K3960Q/LM-KW3960Q/LM-K3860Q model) 50 W (LM-K3565Q model) 30 W (LM-K3365Q model) 6.100 W + 100 W (4 Ω . THD 10 %) 0.130 W + 130 W (4 Ω .F/REW.5 kg 272 X 322 X 354 mm Net Weight External dimensions (W x H x D) Tuner/Amplifier FM Tuning Range Intermediate Frequency Signal to Noise Ratio Frequency Response AM Tuning Range Intermediate Frequency Signal to Noise Ratio Frequency Response Output Power 87.25 % (TT -111. 75Ω Cassette tape player Tape Speed Wow Flutter F. 75 Ω (Y) 1.8 kg (LMS-K3365V) Max.0 MHz 10. 87. Time Frequency Response Signal to Noise Ratio Channel Separation Erase Ratio 3000 ± 3 % (MTT-111.8000 Hz 43 dB 50 dB (P/B)/45 dB (R/P) 55 dB (MTT-5511) Speakers Speaker Name Type Impedance Frequency Response Sound Pressure Level Rated Input Power Front Speaker (L/R) Bass Reflex 2Way 3Speaker (LMS-K3960V/LMS-KW3960V/LMS-K3860V) Bass Reflex 2Way 2Speaker (LMS-K3565V/LMS-K3365V) 4Ω 55 .0 V (p-p). THD 10 %) LM-K3860Q model .5 .2 kg (LMS-K3565V) 3. THD 10 %) LM-K3365Q model .5 % 140 .1620 kHz or 520 .20000 Hz 75 dB T. NORMAL-SPEED) 0.0 V (p-p).1-5 - .10000 Hz 522 .7 V (p-p).❏ SPECIFICATIONS General Power supply Power consumption Refer to the main label. 75 Ω (C) 0.7 MHz 60/55 dB (Mono/Stereo) 140 .50 W + 50 W (4 Ω .20000 Hz 86 dB/W (1m) 130 W (LMS-K3960V/LMS-KW3960V) 100 W (LMS-K3860V) 50 W (LMS-K3565V) 30 W (LMS-K3365V) 260 W (LMS-K3960V/LMS-KW3960V) 200 W (LMS-K3860V) 100 W (LMS-K3565V) 60 W (LMS-K3365V) 214 X 386 X 318 mm (LMS-K3960V/LMS-KW3960V/LMS-K3860V) 229 X 224 X 286 mm (LMS-K3565V/LMS-K3365V) 6.20000 Hz More than 75 dB (1 kHz) More than 55 dB (1 kHz) More than 80 dB 1.1720 kHz 450 kHz 30 dB 140 . 1-6 - .. SECTION 2. ELECTRICAL SECTION ❏ ELECTRICAL TROUBLESHOOTING GUIDE I MICOM PART CHECK I NO Refer to SMPS Troubleshooting P7904 6PIN P-SENS check YES IC101 KIA7042? NO YES Check if IC101 KIA7042 input is over 5V YES NO IC101 KIA7042 relevant parts check NO IC100 78KO/KF2 1 PIN Power Check Check if IC101 KIA7042 input is over 4.3V YES normal YES normal relevant parts replacement .2-1 - . 6V check NO YES D101 1SR35 both terminal power check Refer to SMPS Troubleshooting NO YES Output 5V operation check D101 1SR35 YES relevant parts check NO relevant parts replacement YES Q101 EMITTER 5V check and COLLECTO normal YES Q102 BASE PIN 0.3V YES NO relevant parts check YES X101:32.I MICOM PART CHECK II P7904 5PIN 5.8304MHz operation status check YES YES relevant parts check normal relevant parts replacement relevant parts replacement YES YES normal normal .2-2 - .6V HIGH check NO YES IC 103 8PIN IC 100 19.768KHz X100:9.6V LOW check Check if IC101 KIA7042 output power is over 4.59 PIN 5V check Q102 COLLECTOR 0.20. 2.3 power check YES NO Refer to SMPS Troubleshooting F1+.24 PIN Check YES 22 PIN DATA NO MICOM power 5V check NO Refer to MICOM Troubleshooting YES YES relevant parts check YES NO relevant parts replacement normal normal I FLD DISPLAY CHECK P7904 1.2-3 - .both termainal: 3.I IC103 KS4CD21CS CHECK IC100 78KOKF2 22.7V and above VKK: power is over 26V YES P7302 connection status check and power check F+.52 PIN +5V normal NO relevant parts replacement YES . F2 both terminal: 3.F2.7V or above VKK:26V or above power check NO P7302 assembly check YES Each PIN power check YES YES IC301 PT6324 Power check 50 PIN VKK:-26V 9. 2-4 - .YES NO If 5V defective D3191SR35 input and output power check YES IC100 © IC301 DATA Communication check PIN PIN 75 PIN © 3PIN STB 76 PIN © 2PIN DO 77 PIN © 4PIN DI 78 PIN © 1PIN CLK relevant parts check NO YES normal relevant parts replacement YES NO IC100 75 PIN © STB 77 PIN © 4PIN DI 78 PIN © 1PIN CLK Data output check YES 76 PIN © DATA input check YES FLT light on relevant parts check YES NO YES normal relevant parts replacement normal . 10. 87.47.3V check NO Refer to SMPS Troubleshooting YES IC604 PS9829 VDD PIN Power check (3.I PWM ALTERATION PART CHECK P7905 9PIN 3.72.65.2-5 - .22. 94) YES X601 12.288MHz YES normal NO relevant parts replacement YES IC100 78KOKF2 21 © PWM_CLK 22 © PWM_DATA 23 © PWM_REST output check NO R668(470Ω) output check YES normal NO relevant parts replacement NO YES IC604 PS9829 DATA input check 78 PIN © DATA 79 PIN © CLK 96 PIN © REST LINE resistance check DATA:R671 CLK:R670 RST:R665 NO YES normal relevant parts replacement YES NO DVD ASS`Y PS9829 communication status check(P7403) YES PWM MODULATOR output check FL:75(+)74(-)FR:71(+)70(-) SW:68(+)67(-)CEN:62(+)61 (-) SL:59(+)58(-)SR:52(+)51(-) NO Refer to DVD Troubleshooting IC604 PS9829 DATA input check YES normal NO Check each line resistance check YES normal NO IC604 PS9829 parts check .56.288MHz operation check NO YES IC604 PS9829 86 PIN CLK input check relevant parts check X604 12.29.39. 14.16 PIN YES POWER IC 700.36.727.I POWER AMP PART CHECK P7905 3 PIN+12 13.701.29.6.703 34.701.753.14.770 IC703:R774.729.702.26.702.724 IC701:R730.15 PIN 32V YES Each IC700.20 PIN output check YES Output LINE COIL check NO relevant parts replacement YES normal .19 PIN +12V input power check Each LINE resistance output power check IC700:R702.702.796 YES NO PWM MODULATOR input power check Each IC 4.701.29.703 1.794.726.18.21 PIN input power check NO Refer to SMPS Troubleshooting YES Each IC 700.755.768.771.797.703 34.17.752 IC702:R756.2-6 - .27.773.750.701. 8PIN VSS power check YES NO u-COM (IC301)83PIN.84PIN Communication check YES IC801 (MC4580) 2.8PIN VDD power check YES normal relevant parts replacement NO Refer to SMPS Troubleshooting .2-7 - .13PIN output waveform check IC200 (BU4052)16PINVDD.6PIN input waveform check relevant parts replacement NO YES IC801 (MC4580)4PIN VSS.11PI N input waveform check NO YES IC200 (BU4052)3.I AUX FUNCTION Check whether JK800 contacts or not YES IC200 (BU4052)4. 15PIN input waveform check IC200 (BU4052)16PINVDD.8PIN VSS power check YES relevant parts replacement YES IC801 (MC4580)2.13PIN output check IC601(BU4052) 2.1 5PIN input waveform check NO YES IC200 (BU4052)3.2-8 - .6PIN input check NO YES normal IC200 (BU4052)16PINVDD.15PIN input waveform check NO YES IC801 (MC4580)2.8PIN VDD power check normal YES relevant parts replacement I TAPE FUNCTION CHECK TAPE PCB ASS`Y YES IC200(BU4052)2.13PIN output waveform check IC601(BU4052)2.8PIN VSS power check YES relevant parts replacement .I TUNER FUNCTION CHECK Tuner module (TU601) operation check NO YES IC200(BU4052)1. IC200 (BU4052)16PINVDD. 12PIN input waveform check TUNER MODUEL power check (2PIN 9Vcheck) YES IC200 (BU4052)3.6PIN input waveform check.8PIN VSS power check YES relevant parts replacement NO YES IC801(MC4580)4PIN VSS. 39 PIN check NO HEAD WIRE or Mecha replacement YES IC20114 PIN MUTE operation check relevant parts check NO YES normal relevant parts replacement NO YES IC202 10 PIN HIGH operation check YES relevant parts check NO YES normal normal relevant parts replacement .26 PIN Signal Output check NO DECK HEAD input check YES YES DECK HEAD input IC201 32.2-9 - .I TAPE PLAY PART CHECK P2707:4 PIN © 12V NO YES IC201 (HA12237)16 PIN 12V input waveform check Refer to SMPS Troubleshooting YES IC201:5. 24 PIN REC input check IC203 8 PIN +12V check YES relevant parts check NO Refer to SMPS Troubleshooting YES YES normal NO relevant parts replacement IC201 10.I TAPE REC PART CHECK IC604 PS9829 #49.#52 PWM NO output check Refer to PWM modulation part YES P7207 #2.2-10 - .#7 check NO YES IC201 7.#4 output check NO Q601 Collector waveform check YES NO P2707 #5.3 PIN oscillation check YES P2203 5.21 PIN output check YES L203 2.#7 input check Board to Board cantact check YES IC203 MC4580 #1.3 PIN input check 8 PIN ERASE input check NO YES Q205(D1304) BASE HIGH check YES normal normal NO IC202 4 PIN HIGH operation check YES relevant parts replacement . 902 NO Replace IC 901.C921 If DC V is in 14~19V and it is steady.1V YES Check short of P9701.I SMPS POWER CIRCUIT *MAIN PART Check the fuse F901 NO Replace the fuse YES Check the DC V of C905. NO Check IC901 . LF901.902 YES Check the DC V Of C981.C945. C903.902 YES Chcek the DC V Of C909.C951 If DC V is in 35V.P9702 line NO YES Chcek the DC VOf C950. If DC V is 6.-35V Check short of P9702 line NO Check short of P9701 line YES OK .2-11 - . If DC V is over 400V NO Check BD901. *P-SENS PART Check the PIN6 OF P9702 If DC V is over 5.6V NO Check power circuit Trouble shooting YES OK *VKK PART Check the PIN3 OF P9702 If DC V is over -28V ±2 NO Check power circuit Trouble shooting YES OK .2-12 - . ❏ INTERNAL BLOCK DIAGRAM of ICs • TAS5142 BLOCK DIAGRAM .2-13 - . 2-14 - .• U1739EJ2V1UD00/KF2_E BLOCK DIAGRAM . • HA12237F BLOCK DIAGRAM .2-15 - . • STR-S6757IF1905 BLOCK DIAGRAM • PS9829B BLOCK DIAGRAM .2-16 - . • ES6838 BLOCK DIAGRAM GPIO SRAM/ROM Interface Audio ADC Serial Audio Interface 32-Bit RISC Processor 16 K Cache Display OSD / SPU Controller Scaler DeIntelacer TV-Encoder VDAC HDMI I/F Gateway Audio DAC USB + DMA Controller DVD Descrambler + T ransport Huffman Decoder Servo Controller / RF Video Processor A API T ROM RAM 8051 µController Digital PLL DRAM Interface ECC DSC RF AFE .2-17 - . • PT6324 BLOCK DIAGRAM .2-18 - . B REC F.DATA DVD DATA CLK DVD DATA.288 TAS5152_SD MOTER HIGH/NO RM EXPENDER REC MUTE REC MUTE REC RETM REC SW REC MUTE LEVEL METER PS9829A FL+/-.CLK SOL"A" EXP CLK SOL"B" DATA DECK 12. FR+/.B HALF A.❏ BLOCK DIAGRAM DECK/AD MODE A.Power Amp ATOR CENTER +/WOOFER+/- S/W C/T RL RR OP AMP REC L/R H/P_SW PWM OUT SUB WOOFER OP AMP HA12237 TAPE IC TUNER MODULE RDS DATA CLK CS5340 CLK.CLK OP AMP HEAD WOOFER PLL DAT.-.CLK BU4052 DATA TUNER L/R TAPE L/R AUX L/R MIC INPUT AUX L/R CS5340 RESET OP AMP CS5340 OPTICAL 12.R LC6324 OVERALL AV BLOCK DIAGRAM 9.8304MHz MAIN BOARD AMP BOARD TAS5152_PDN FL FR NEC AUDIO MICOM 9829_DAT 9829_RESET 9829_CLK VFD DATA. RR+/.TAS5142 PWM MODUL RL+/-.28MHz DVD/CD BLOCK USB DA+.5V BU4052 2-19 2-20 . 1MB]B[0.B Y/G Y ADC SWITCH OPT OUT OPT IN AUDIO L. F±.pr.SPINDLE± FLASH WRLL#.T± IC LOAD±..21].❏ SCHEMATIC DIAGRAMS • MAIN SCHEMATIC DIAGRAM MIC A_MUTE AUDIO JACK VIDIO OUT CYBS..CKE.15] CDDVDCT.CSo#.RAS0 CAS#.E. R MIC L.HWR# MS_SEL_OU HA0 HD[0.LDO2 SDRAM DSCK#.F.B.15].DQMX OPEN/CLOSE LA[0..R. LD[0. DVDMDI DECK MECHANISM MICOM UART P/UP MMA[0.7] EEPROM SDA D-..D... CONTROL SIGNAL 2-21 2-22 . VRDVD. D+ 27MHz USB UBI9021 USB CON HD[0.MRST#.VRD LDO1.pb. R 12S PWM/DAC 12S Y SPDIF OUT SPDIF IN A.R CDMDI.C.WE#.LOE# MPEG ESS6838 FOCUS/SLED SPINDLE/TACKING AMP_STBY 48MHz SCI USB_RESET MCU_INTQ JRD#.7] M MOTOR DRIVE SLED±.C. • MAIN SCHEMATIC DIAGRAM 2-23 2-24 . • MAIN AMP SCHEMATIC DIAGRAM 2-25 2-26 . • FRONT SCHEMATIC DIAGRAM 2-27 2-28 . • SMPS SCHEMATIC DIAGRAM 2-29 2-30 . • DECK SCHEMATIC DIAGRAM 2-31 2-32 . • JACK & IO SCHEMATIC DIAGRAM 2-33 2-34 . ❏ WIRING DIAGRAM P4004 P9702 P0401 DVD BLOCK P5701 SMPS BLOCK P9701 P7501 P7905 TO CD/DVD POWER CD/DVD /AMP Power IO JACK BLOCK P4703 FRONT 130Wx2 P7403 PS9829 P7904 Center/Surrd X3 60W Sub WooferX180W FRONT BLOCK P3702 P7302 P7709 P7206 P7207 DECK Ass‘y P2706 P2202 P2203 P2201 P2707 LM-K7960 WIRING DIAGRAM LM-K7960 WIRING DIAGRAM 2-35 2-36 . C.❏ PRINTED CIRCUIT DIAGRAMS • MAIN P. BOARD 2-37 2-38 . BOARD 2-39 2-40 .• MAIN P.C. • FRONT P.C. BOARD 2-41 2-42 . BOARD 2-43 2-44 .C. BOARD • DECK P.C.• SMPS P. . 5 APPEAR AT FLD? Y OK.3-1 - .FM 87. Y OK CHECK THE VOLTAGE OF EACH PIN ON P5701. DVD PART ELECTRICAL ❏ DVD ELECTRICAL TROUBLESHOOTIHG GUIDE I POWER CHECK GUIDE POWER ON POWER ON DOES DVD/CD APPEAR AT FLD? PUSH KARAOKE DVD BUTTON DOES AUX. CHECK CONNECTOR P7501. . Y DOES DISK1 APPEAR AT FLD? N N DOES IT APPEAR DVD ERROR AT FLD? N Y DOES NO DISC OR TIME ARE APPEARED AT FLD? Y N CHECK CONNECTOR (P4703.P4004. N Y CHECK DVD MD MODULE. P5701) RECONNECT IT.SECTION 3. 138. Y N SDRAM WORKS PROPERLY? CHECK CONNECTION LINES BETWEEN SDRAM (IC502)&ES8381 OR THE SDRAM IS DAMAGED. Y Y ES8381 VIDEO OUTPUTS PROPERLY? N CHECK THE RELATED CIRCUIT OF ES6698FD (IC501)PIN 133. DOES FIRST TRAY MOVE INSIDE WHEN IT IS AT CLOSED POSITION? N OUT_SW.139. Y B CHECK THE CABLE CONNECTION BETWEEN DVD PCB AND MD (MECHA) .140 Y CHECK AV CABLE CONNECTION TO TV SET.I TEST &DEBUG FLOW POWER ON Y N SHOW LOGO? FLASH MEMORY OPERATES PROPERLY? N CHECK CONNECTION LINES BETWEEN FLASH &ES8381 OR THE FLASH ACCESS TIME WHETHER IS SUITABLE OR NOT.137.IN_SW SIGNALS OK? N CHECK THE MD MECHA Y OPEN /CLOSE SIGNALS ON IC401 ARE OK? N CHECK THE OUTPUT SIGNAL OF ES8381 TO IC401 FOR CONTROL OPEN/CLOSE Y Y LOAD+&LOADSIGNALS ON PDM02 ARE OK? N CHECK THE TRAY CONTROL I/O PIN ON IC401.134.3-2 - . Y C CHECK CABLE CONNECTION WITH PICK-UP HEAD.3-3 - . DO NOT PUT IN DISC AND TRAY CLOSE.B DOES THE SLED MOVE TO INNER SIDE WHEN IT IS AT OUTER POSITION? N LIMIT SW SIGNAL ON P4407 IS LOW? N CHECK THE MD Y N SLED SIGNAL IS OK? CHECK THE RELATED CIRCUIT OF SLED AND MOTOR DRIVER IC (IC401) Y Y CHECK THE CABLE CONNECTION WITH MECHA. Y N Y PROPER F+&FOUTPUTS? CHECK THE MOTOR DRIVER (IC401). . Y OPTICAL LENS IS MOVING FOR SEARCHING FOCUS? N PROPER FOCUS OUTPUTS TO MOTOR DRIVER? N CHECK FOCUS CONNECTION ON ES8381 AND MOTOR DRIVER IC. Q406) N Y CHECK THE RELATED CIRCUIT OF LASER POWER TRANSISTOR.3-4 - . (Q405.C N LASER TURNS ON WHEN READING DISC? DVDLD OR CDLD OUTPUT PROPERLY? N CHECK THE LASER POWER CIRCUIT BETWEEN ES8381 AND POWER TRANSISTOR.Q406) Y COLLECTOR VOLTAGE OF POWER TRANSISTOR IS OK? (Q405. Y D CHECK THE CABLE CONNECTION BETWEEN PDM03 AND MD . N CHECK THE SPINDLE RELATED CIRCUIT ON ES8381 Y SPIN+&SPINOUTPUT PROPERLY? N Y CHECK THE SPINDLE CONTROL OF MOTOR DRIVER (IC404). PUT DISC IN TRAY. Y N DOES SPINDLE ROTATE? PROPER SPINDLE SIGNAL ON ES8381. Y CHECK CABLE CONNECTION BETWEEN PDM01 AND PICK-UP HEAD. Y E .B. Y Y CHECK CABLE CONNECTION ON PICK-UP HEAD.D FROM MD? N CHECK THE CONNECTIONS BETWEEN PDM01 AND PICK-UP HEAD. N DISC PLAY? CHECK RF SIGNAL WAVEFORM. PROPER FOO SIGNAL ON IC401? Y Y CHECK CABLE CONNECTION BETWEEN PDM01 AND MD. Y N CHECK THE RELATED CIRCUIT OF ES8381 FOCUS SIGNAL. N TRACKING OK? PROPER TRO SIGNAL ON IC401? N CHECK THE RELATED CIRCUIT BETWEEN IC401 AND ES8381 Y N T+&T-OUTPUT PROPERLY? CHECK THE TRACKING CONTROL ON MOTOR DRIVER (IC401).D N FOCUS ON OK? PROPER SIGNAL ON A.C.3-5 - . CHECK THE VIDEO MUTE TR (Q411). OUTPUT OF VIDEO BUFFER IC (IC407)AND ES8381 VIDEO SIGNAL DATA TEST END .E ALL OUTPUTS ARE OK DURING PLAYING DISK ? N AUDIO SIGNAL DATA ON P4703 IS OK? N CHECK THE CONNECTIONS BETWEEN ES8381 AND P4703 Y CHECK THE MAIN PCB Y N PICTURE SIGNAL DATA ON ES8381 IS OK? N FOR EXAMPLE COMPOSITE VIDEO .3-6 - . (P4302) Y Y CHECK THE IC405 (UBI9021).20~23) OK .I USB PART TURN ON USB Y “SEARCHING ”OR “USB ”DISPLAY CHECK N CHECK THE POWER SUPPLY CIRCUIT.(CHECK DATA LINE PIN 14~17.3-7 - . (CHECK P5701) Y CHECK THE HRST#SIGNAL Y Y CHECK THE USB PART AND DVD PART LINE. N READING OK CHECK CHECK THE USB JACK POWER SUPPLY. (CHECK P4302) Y CHECK THE USB DATA LINE. D+ .LCS3#(FLASH) Playing at USB function 1.I WAVEFORM WHEN POWER ON.RESET(DVD) 2.D4.TX 4.HRST# 2.5V 3.RX 3.RESET &DATA ETC WAVEFORM 1.3-8 - . CLOSE STARTING ACTION WAVEFORM IN MD DEVICE 1.OPEN/CLOSE WAVEFORM AT POWER ON 1.SLED+ (At Power on ) .Limit SW 2.OPEN 3.3-9 - .SLED3.SLO (from MPEG) 2. 3-10 - .FDO 2.FDO 2.F+ 3.F(INSERT CD ) FOCUS WAVEFORM (AT DVD) (INSERT DVD ) 1.F+ 3.F- .FOCUS WAVEFORM (AT CD) 1. AT POWER ON ,SPINDLE SIGNAL AT MD DECK 1.Spind 2.Spin+ 3.Spin- AT FIRST ACTION,FOCUS SIGNAL A,B,C,D 1.A 2.B 3.C 4.D - 3-11 - TRACKING SIGNAL 1.Tro 2.Tr3.Tr+ RF WAVEFORM - 3-12 - DISK TYPE JUGEMENT WAVEFORM (DVD) 1.F+ 2.FDO 3.SVRRF (CD) - 3-13 - 3-14 - .. ❏ DVD SCHEMATIC DIAGRAMS • MPEG SCHEMATIC DIAGRAM 3-15 3-16 . • RF & SERVO SCHEMATIC DIAGRAM 3-17 3-18 . • INTERFACE SCHEMATIC DIAGRAM 3-19 3-20 . • USB SCHEMATIC DIAGRAM 3-21 3-22 . BOARD 3-23 3-24 .C.❏ PRINTED CIRCUIT DIAGRAMS • DVD P. C.• DVD P. BOARD 3-25 3-26 . SECTION 4. EXPLODED VIEWS ❏ CABINET AND MAIN FRAME SECTION A26 260 451 281 451 A43 261 280 A41 A49 266 451 259 CABLE3 A51 A46 451 258 451 CABLE4 256 255 A44 265 A50 451 264 263 257 255 254 253 OPTIONL CABLE2 451 252 A00 A47 250 251 CABLE1 CN201 450 A48 305 267 4-1 4-2 . AUDIO DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS SPECIFICATION CWN42FR605 TOKYO PIG 50-093-4XXXX PIGEON UNIT PC 50-093-41234 PIGEON HEAD ASSY 02-083-4266 ÄPIGEON BELT/FEC 02-083-4267 PIGEON BELT/FEL 33-160-4309 PIGEON PRESS CASSE 50-093-41299 PIGEON MOTOR(ASSY 50-222-41226 PIGEON GEAR ID 01-082-4598 PIGEON SPRING CWL4 50-219-4014 PIGEON MOLD CWL44 01-081-4601 PIGEON SPRING CWL4 01-082-4688 PIGEON SPRING 50-268-3016 PIGEON ARM CWL44 50-239-4072 PIGEON ARM CWL44 50-222-4428 PIGEON GEAR CRL442 01-081-4678 PIGEON SPRING CRL4 02-083-4188 PIGEON BELT/FELT C 50-223-4429 PIGEON PULLEY/FLYW 50-093-4780 PIGEON SOLENOID 50-221-31320 PIGEON GEAR ASSY 50-093-31032 PIGEON PULLEY/FLY 50-093-4674 PIGEON PULLEY/FLYW 015 022 023 009 A00 A01 A02 001 002 003 006 007 008 009 011 025 009 A02 013 015 017 018 019 011 020 021 022 013 023 025 037 4-3 4-4 . LG PART NO. 6720AG0013A 6768RZUP01A 6768R-EP05A 6768RZBP04A 6768RZBP05A 6768R-PP03A 6768R-QP04A 6768RZGP03A 6768R-SP01F 6768R-MP01C 6768R-SP01A 6768RZSP02A 6768R-AP01A 6768R-AP01C 6768R-GP01J 6768R-SP01P 6768R-BP01C 6768R-LP01C 6768RZVP03A 6768RZGP05A 6768RZJP02A 6768R-JP03A DESCRIPTION DECK.❏ TAPE DECK MECHANISM (A/R & A/S : LEFT A/S DECK) 006 037 001 007 017 008 002 003 018 019 021 020 A01 LOCA. NO. AUDIO DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS SPECIFICATION CWN42FR605 TOKYO PIG ASSY B-DECK PIGEON HEAD 33-160-4309 PIGEON PRESS CASSE 50-222-41226 PIGEON GEAR ID 01-082-4598 PIGEON SPRING CWL4 50-219-4014 PIGEON CWL44 01-081-4601 PIGEON SPRING CWL4 01-082-4688 PIGEON SPRING 50-268-3016 PIGEON ARM CWL44 50093-41399 PIGEON GEAR AS 50-239-4072 PIGEON ARM CWL44 50-222-4428 PIGEON GEAR CRL442 01-081-4678 PIGEON SPRING CRL4 02-083-4188 PIGEON BELT/FELT C 50-223-4429 PIGEON PULLEY/FLYW 50-093-4780 PIGEON SOLENOID 50-221-31320 PIGEON GEAR ASSY 50-093-31032 PIGEON PULLEY/FLY 025 009 011 009 A03 011 013 015 016 017 018 019 013 020 021 022 023 025 4-5 4-6 . 6720AG0013A 6768RZHP02A 6768R-PP03A 6768RZGP03A 6768R-SP01F 6768R-MP01C 6768R-SP01A 6768RZSP02A 6768R-AP01A 6768R-GP04A 6768R-AP01C 6768R-GP01J 6768R-SP01P 6768R-BP01C 6768R-LP01C 6768RZVP03A 6768RZGP05A 6768RZJP02A DESCRIPTION DECK.❏ TAPE DECK MECHANISM (A/R & A/S : RIGHT A/R DECK) 021 019 018 007 008 017 016 020 003 015 022 009 023 LOCA. A00 A03 003 007 008 LG PART NO. NO. 7 L10.65)11 DVD PU.FRONT TRAY BELT GEAR GEAR PWB(PCB) ASSEMBLY.DRAWING SCREW. NO.OTHERS GEAR GEAR GEAR CLAMP ASSEMBLY COVER BASE LEVER MOTOR ASSEMBLY GEAR FRAME CD MECHA PARTS CD MECHA PARTS SCREW.0 FFC UL2896(0.7 L4.DRAWING CD MECHA PARTS SCREW SCREW. DR-02 SUS-420J2 OTHER DISC(CDM-H1503) TRAY (CDM-H1503) HOME TRAY (CDM-H1503) MABUCHI 1503 T/D SENSOR DECK/MECHA CDM-H1503 MOLD LOAD DECK/MECHA MAIN CDM-H1503V OTH DECK/MECHA PULLEY CDM-H1503V M LOADING (CDM-H1503) CDM-H1503 UP/DW/OP/CL PU UP (CDM-H1503) PU DOWN (CDM-H1503) CAM (CDM-H1503) DVD DVM-H1513 DECK/MECHA GUIDE MOTOR CDM-H15 MAIN (CDM-H1503) S/W CLOSE HOME LOADING (PULLEY 8.7 L4.7 L7. A26 A30 012 012A 021 024 025 PART NO.DRAWING SCREW.0 SWRCH18A/FZW DP 159 422 170 165 418 419 164 163 162 417 166 417 167 416 153 168 155 173 156 030 035 035A 036 151 153 155 156 159 162 163 164 165 166 169 432 030 439 024 430 025 431 435 012A 167 168 169 170 172 A30 173 175 177 180 416 417 418 419 422 430 431 432 012A 177 172 175 036 035 035A 180 438 021 435 439 4-7 4-8 .DRAWING SPECIFICATION DVM-H1523(DP-9 SS P/UP)DVD 3 PU (DVM-H1533 DP-10 SS P/UP) H DVD REAR DP8 RIGHT 20 OTHER BL DVD REAR DP8 RIGHT 20 OTHER BL DECK/MECHA DP-10 FEEDING DVD DP-9 PINION MOLD DVD DP-9 MIDDLE MOLD DVD DP-9 RACK MOLD DP-10 FOR 3 CHANGER FEEDING P=1.DRAWING SCREW.DRAWING SCREW.TOTAL CABLE.6) MAIN (CDM-H1503) UD MOLD DVM-H1523V 3X12X12FNM 3X9X12FZMY #NAME? 3X12X10FZMY #NAME? + 1 D1.❏ DECK MECHANISM EXPLODED VIEWS 416 151 LOCA. 4405RCS007E 3041RBD003H 5040R-0110A 5040R-0110A 4681R-B009C 4470R-0179A 4470R-0178A 4470R-0180A 6871R-9295D 6850R-JE20Z 4370R-0136A 3390RB0002A 4470RB0005A 4681RBA001C 6871RF9211A 3390RB0001B 4400R-0012A 4470R-0190A 4470RB0003A 6871RZ7036A 4470RB0006A 4470RB0007A 4470RB0002A 4861RB0002B 3550R-0685A 3040RB0005A 4510RB0001A 4681RBA002A 4470RB0001A 3210R-M009A 88H-0004 88H-0002 88H-0003 88H-0004 88H-0005 88H-0006 88H-0007 88H-0008 88H-0009 88H-0010 DESCRIPTION MECHANISM ASSEMBLY BASE ASSEMBLY RUBBER RUBBER MOTOR ASSEMBLY GEAR GEAR GEAR PWB(PCB) ASSEMBLY.0 SWCH18A/BZN DP8 + 1 D1.05X0.5 SWRCH18A/FZY DP8 MACHINE + 1 D1.FLAT SHAFT TRAY GEAR MOTOR ASSEMBLY PWB(PCB) ASSEMBLY.5 SWCH18A/NI DP8 P + 1 D1. SPEAKER SECTION ❏ MODEL: LMS-K3960V 760 A70 RIGHT 757 LEFT 761 762 756 751 763 752 758 759 755 750 754 753 .5-1 - .SECTION 5. 5-2 - ..