Related Manuals for LG OM4560
Summary of Contents for LG OM4560
- Page 1 Internal Use Only MINI HI-FI AUDIO SERVICE MANUAL MODEL: OM4560 CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN77483237 APRIL, 2016...
- Page 2 CONTENTS SECTION 1 ..GENERAL SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..REPLACEMENT PARTS LIST...
-
Page 3: Table Of Contents
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 ............................ -
Page 4: Servicing Precautions
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. - Page 5 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.
-
Page 6: Esd Precautions
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. -
Page 7: Hidden Key Mode
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 ... -
Page 8: Service Information For Eeprom
SERVICE INFORMATION FOR EEPROM POWER ON FLD no disc status or AUX status. POWER ON Remote control ‘|’ Key Button and Front ‘STOP’ Key Button push same timing during 5 seconds. FLD ‘OP-0…. Remote Control ‘|’ or ‘|’ can be moved by using the Key Each option ‘Repeat’(+ Value) or ‘STOP’(- Value) using the Key Value of options to change the code there. -
Page 9: Program Download & Update Guide
PROGRAM DOWNLOAD & UPDATE GUIDE . MCS PROGRAM Download program file name must be HG640_FW_OM4560_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. -
Page 10: Eq Program
. EQ PROGRAM Download program file name must be EQ_PRG_OM4560_***.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. -
Page 11: Specifications
SPECIFICATIONS • GENERAL Power requirements Refer to the main label. Power consumption Refer to the main label. Networked standby : 0.5 W (If all network ports are activated.) Dimensions (W x H x D) Approx. 451.5 mm x 311 mm x 302.5 mm Net Weight (Approx.) Approx. - Page 12 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ............................2-3 1. CABINET AND MAIN FRAME SECTION ....................2-3 2. DECK MECHANISM SECTION (DM19AB) ....................2-5 3. PACKING ACCESSORY SECTION ......................2-7...
-
Page 14: Exploded Views
EXPLODED VIEWS NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL 1. CABINET AND MAIN FRAME SECTION TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. CABLE5 CABLE2 CABLE1 CABLE3 CABLE4... -
Page 15: Deck Mechanism Section (Dm19Ab)
2. DECK MECHANISM SECTION (DM19AB) 1439 1002 A001 1005 1001 1026 1003 1004 1030 1024 1437 1012 1437 1024 1024 1015 1016 1013 1049 1437 1024 1020 1011 A006 1043 1019 1018 A005 1045 1439... -
Page 16: Packing Accessory Section
3. PACKING ACCESSORY SECTION 801 Owner’s Manual 808 Battery 900 Remote Control 825 FM Wire Antenna 803 Packing 804 Bag 803A Packing 802 Box... - Page 18 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.
-
Page 19: One Point Repair Guide
ONE POINT REPAIR GUIDE 1. NO POWER If the unit doesn’t work by no power problem, repair the set according to the following guide. 1-1. FUSE & BRIDGE DIODE 1-1-1. Solution Please check and replace F901, BD901, TH901 on SMPS board. 1-1-2. - Page 20 ONE POINT REPAIR GUIDE NO POWER If the unit doesn’t work by no power problem, repair the set according to the following 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.
-
Page 21: Booting When Power On The Set
ONE POINT REPAIR GUIDE 2. NO BOOTING WHEN POWER ON THE SET The set doesn’t work when press the power button on the display board or the remote control. 2-1. FLASH MEMORY 2-1-1. Solution Please check and replace IC502 on MAIN board. 2-1-2. -
Page 22: Vfd Is Not Displayed When Power On The Set
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 DIG800 on FRONT board. 3-1-2. - Page 23 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.
-
Page 24: Operation Of Md
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. - Page 25 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.
- Page 26 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.
- Page 27 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.
- Page 28 ONE POINT REPAIR GUIDE 5. NO SOUND There is no sound output in the CD FUNCTION, repair the set according to the following guide. 5-1. IN THE CD FUNCTION 5-1-1. Solution Please check and replace IC502, IC700 on MAIN board. 5-1-2.
-
Page 29: Sound
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 IC700, IC701 on MAIN board. 5-2-2. - Page 30 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 IC502 on MAIN board & CN801 on FRONT board. 5-3-2.
- Page 31 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 IC202 on MAIN board. 5-4-2. How to troubleshoot (Countermeasure) 1) Check AUX_L/R signals to IC202 (Pin26, 27).
- Page 32 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 IC200, IC202 on MAIN board. 5-5-2. How to troubleshoot (Countermeasure) 5-5-2.
-
Page 33: Protection
ONE POINT REPAIR GUIDE 6. PROTECTION 6-1. D(DC) Protection 6-1-1. Solution Replace IC701(AMP IC) on MAIN top board. 6-1-2. How to troubleshoot (Countermeasure) 1) After main set power off, check red LED blink at intervals of 1 second. (D Protection or S Protection) 2) Turn main set power on again. - Page 34 ONE POINT REPAIR GUIDE PROTECTION 6-2. S(Shut down) Protection 6-2-1. Solution Replace IC701(AMP IC) on MAIN top board. 6-2-2. How to troubleshoot (Countermeasure) 1) After main set power off, check red LED blink at intervals of 1 second. (D Protection or S Protection) 2) Turn main set power on again.
- Page 35 ONE POINT REPAIR GUIDE PROTECTION 6-3. B(Burnt) Protection 6-3-1. Solution Replace IC703(AMP IC) on MAIN bottom board. 6-3-2. How to troubleshoot (Countermeasure) 1) After main set power off, check red LED blink at intervals of 0.5 second. (B Protection) 2) Turn main set power on again. 3) Check voltage 3.3 V of AMP_Protect signal (pin2 of Q702).
-
Page 36: Electrical Troubleshooting Guide
ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER (SMPS) No 5.6 VA F901 normal? Replace F901 (Use the same fuse). BD901 normal? Replace BD901. TH901 normal? Replace TH901. Is Vcc (10 V ~ 18 V) supplied to D902 normal? IC901 Pin7? Check or replace D902. D933/ D934 normal? Replace D933/ D934. - Page 37 ELECTRICAL TROUBLESHOOTING GUIDE No PVDD F901 normal? Replace F901 (Use the same fuse). BD901 normal? Replace BD901. TH901 normal? Replace TH901. Is Vcc (10 V ~ 18 V) supplied to R959, R960, R961, R963, R964 normal? IC911 Pin4? Check or replace R959, R960, R961, R963, R964.
- Page 38 ELECTRICAL TROUBLESHOOTING GUIDE No 12 V Is VIN (34 VA) Check the PVDD (34 VA) from SMPS. Supplied to IC602? Is 12 VA Supplied Check the IC602 Pin2 “H”. To L611? Check or replace IC602 No VFD Is the power supplied from the Check the Pin4, Pin5, Pin6 from CN503.
-
Page 39: Mcs Part Check
ELECTRICAL TROUBLESHOOTING GUIDE 2. MCS PART CHECK MCS PART CHECK Check if IC600 Check and change IC600. have 3.3 V output. Check if IC605 Check and change IC605. have 1.2 V output. X501: 32.768 kHz, Check the IC602 Pin2 “H”. X500: 24 MHz, Check the operation. -
Page 40: Vfd Display Check
ELECTRICAL TROUBLESHOOTING GUIDE 4. VFD DISPLAY CHECK VFD Display Check Check CN801 Pin8, 9, 10 input Refer to SMPS troubleshooting. voltage. Check if both end voltage of FL+, FL- are over 2.26 V VKK : over 33 V. Check DC-DC power L614(VCC_5.1V - F+), Check CN801 connection. -
Page 41: Pwm Modulation Check
ELECTRICAL TROUBLESHOOTING GUIDE 5. PWM MODULATION CHECK PWM MODULATION PART CHECK Refer to SMPS and DC-DC Check L605(PWM_3.3V). convertor troubleshooting. • Check IC700(TAS5548) VDD 3.3 V - Pin9, 14, 35, 50. • Check X701 (12.288 MHz). Check Check X701 Replace X701 (12.288 MHz). X701(12.288 MHz) (12.288 MHz) operation. -
Page 42: Power Amp Part Check
ELECTRICAL TROUBLESHOOTING GUIDE 6. POWER AMP PART CHECK POWER AMP PART CHECK Check Refer to SMPS troubleshooting. CN600 Pin4, 5, 6: +34 V L611: +12 V. Check IC701 Pin1, 2, 8,13, 22 input voltage. Check IC701 Check each line resistor output voltage. Pin2: +12 V input. -
Page 43: Tuner / Aux Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 7. TUNER / AUX FUNCTION CHECK FUNCTION CHECK Check IC202 Check JK201, IC200. (CS5346) Pin11, 12, 26, 27 input Check IC202 Check IC202 Check L202 VCC+5 V. (CS5346) Pin41 Pin5: +3.3 V output data. Pin14: +5 V. Check Check IC202 Check IC202... -
Page 44: Tuner Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 8. TUNER FUNCTION CHECK TUNER FUNCTION CHECK Check tuner Check or L604 (VCC_3.3 V). IC200 Pin11 VCC_3.3V. X200 : 32.768 kHz Check or replace X200. Check opration. Check IC200 Pin5, 6, 7, 8 Check or replace IC502. (RST, CS, SCLK, SDIO). -
Page 45: Cd Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 9. CD FUNCTION CHECK CD FUNCTION Is Motor_open/close Can the disc insert? Is load +,- ok? OK? (IC400 Pin6, 7) Check IC400. Is Motor ok? (about 12 Ω) Check loading motor. Check IC408 (Motor drive IC). Focus, IM driving tracking, sled signal Disc reading is ok? -
Page 46: Single Usb Function
ELECTRICAL TROUBLESHOOTING GUIDE 10. SINGLE USB FUNCTION USB FUNCTION Plug-in USB device. Check USB_5V. Check L617 USB_5 V. Display “NO USB”. Check USB_D+/ D- Check USB jack (CN802). Display “READ”. (CN802 Pin2, 3). Display “NO FILE”. Check IC502 (Pin A7, A8). Replace IC502. -
Page 47: Waveforms Of Major Check Point
WAVEFORMS OF MAJOR CHECK POINT 1. SDRAM 2. SERVO CD-16M DATA ADDRESS 1. IC502 pin38, 2. IC502 pin53, 5. IC501 pin M1 3. IC502 pin35, 4. IC503 pin1 3. AUDIO PATH DAC_MCLK CD_BCK DAC_BCK CD_LRCK DAC_LRCK CD_DATA DAC_DATA 6. IC501 pin N4, 7. IC501 pin N1, 9. -
Page 48: Wiring Diagram
WIRING DIAGRAM 1. [Total CNT : 7 ea] 1. FFC Cable MAIN MAIN BT Module : 1EA MAIN MD : 2EA 2. Harness Single MAIN SMPS : 1EA MAIN FRONT : 1EA MAIN JACK : 1EA JACK LED : 1EA 3-31 3-32... -
Page 49: Block Diagrams
BLOCK DIAGRAMS 1. SYSTEM BLOCK DIAGRAM 3-33 3-34... -
Page 50: Smps Block Diagram
2. SMPS BLOCK DIAGRAM 3-35 3-36... -
Page 51: Audio Path Block Diagram
3. AUDIO PATH BLOCK DIAGRAM 3-37 3-38... -
Page 52: Power Block Diagram
4. POWER BLOCK DIAGRAM 3-39 3-40... -
Page 53: Circuit Voltage Chart
CIRCUIT VOLTAGE CHART 1. ICs Location & Description IC Name/ Type Vcc/ Vdd Location & Description IC Name/ Type Vcc/ Vdd Location & Description IC Name/ Type Vcc/ Vdd Main Board MCS3730S • Spec: TPS563200 • Spec: SI4704-D60-GM • Spec: TYPE: 176 FBGA VDD33 : 3.1 ~ 3.6 V TYPE: SOT 6PIN... -
Page 54: Printed Circuit Board Diagrams
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. 3-61 3-62... -
Page 55: Main P.c.board
2. MAIN P. C. BOARD (TOP VIEW) (BOTTOM VIEW) 3-63 3-64... -
Page 56: Front P. C. Board
3. FRONT P. C. BOARD (TOP VIEW) (BOTTOM VIEW) 3-65 3-66... -
Page 57: Jack P. C. Board
4. JACK P. C. BOARD (TOP VIEW) (BOTTOM VIEW) 5. SPEAKER LED DISPLAY P. C. BOARD (TOP VIEW) (BOTTOM VIEW) 3-67 3-68... - Page 58 3-69 3-70...