LG SH5B Service Manual
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LG SH5B Service Manual

Wireless sound bar
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Internal Use Only
Wireless Sound Bar
SERVICE MANUAL
MODEL: SH5B
(SH5B, SPH5B-W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P/NO : AFN77195067
JANUARY, 2016

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  • Page 1 Internal Use Only Wireless Sound Bar SERVICE MANUAL MODEL: SH5B (SH5B, SPH5B-W) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN77195067 JANUARY, 2016...
  • Page 2 CONTENTS SECTION 1 ..GENERAL SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..WIRELESS SUBWOOFER PART SECTION 5 ..REPLACEMENT PARTS LIST...

  • Page 3: Table Of Contents

    SECTION 1 GENERAL CONTENTS ESD PRECAUTIONS ............................1-3 WIRELESS SUBWOOFER CONNECTION ....................... 1-4 HIDDEN KEY MODE ............................1-5 MCS / EQ PROGRAM UPDATE GUIDE ......................1-6 SPECIFICATIONS ............................. 1-7...

  • Page 4: 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 5: Wireless Subwoofer Connection

    WIRELESS SUBWOOFER CONNECTION LED indicator of wireless subwoofer 4. Disconnect and reconnect power cord of the main unit and the wireless subwoofer. 5. Turn on the main unit. : The sound bar and wireless LED Color Status subwoofer will be automatically connected. Green - Green LED on the rear of wireless subwoofer The connection is trying.

  • Page 6: Hidden Key Mode

    HIDDEN KEY MODE HIDDEN MODE KEYS EEPROM EDIT Main unit ‘ (Volume)’ + Remote control ‘ (Night Mode)’ EEPROM CLEAR (Initialize) Main unit ‘ (Volume)’ + Remote control ‘SOUND EFFECT’ VERSION CHECK Main unit ‘ (Volume)’ + Remote control ‘ (Play/Pause)’...

  • Page 7: Mcs / Eq Program Update Guide

    MCS / EQ PROGRAM UPDATE GUIDE 1. Preparation - Remote control. - Do format USB Memory to FAT32 File system. - USB : Update fi le exist only in the USB Memory stick. Ex ) SH5 :  E:\PG540_SH5_*.bin (if USB driver is E:\) ...

  • Page 8: Specifications

    SPECIFICATIONS • GENERAL Power consumption 22 W Networked standby : 0.5 W (If all network ports are activated.) AC adapter Model : DA-38A25 Manufacturer : Asian Power Devices Inc. Input : 100 - 240 V ~ 50 - 60 Hz 1.2 A Output : 25 V 1.52 A Dimensions (W x H x D)
  • Page 10 SECTION 2 CABINET & MAIN CHASSIS CONTENTS DISASSEMBLY INSTRUCTIONS ........................2-2 1. HOW TO DISASSEMBLE THE MAIN SET ....................2-2 2. HOW TO DISASSEMBLE THE WOOFER ....................2-7 EXPLODED VIEWS ............................2-9 1. MAIN SET SECTION ..........................2-9 2. WIRELESS SUBWOOFER SECTION ....................2-11 3.

  • Page 11: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. HOW TO DISASSEMBLE THE MAIN SET 1) Remove the 19 screws. Figure 1-1 2) Remove the Case Bottom Assembly. Figure 1-2...

  • Page 12: How To Disassemble The Main Set

    HOW TO DISASSEMBLE THE MAIN SET 3) Remove the 2 screws, Disconnect the Harmess/FFC cables (KEY, SPK) and Remove the Main PCB Assembly.  Figure 1-3 4) Remove the SPK Chamber L/R Assembly.   Figure 1-4...
  • Page 13 HOW TO DISASSEMBLE THE MAIN SET 5) Remove the L/R Deco Assembly. Figure 1-5 6) Remove the 4 screws and Disconnect FFC cables (BT, Wireless). Wireless Figure 1-6...
  • Page 14 HOW TO DISASSEMBLE THE MAIN SET 7) Remove the EMI Shield Tape. Figure 1-7 8) Remove the EMI Shield Tape of Bottom side. Figure 1-8...
  • Page 15 HOW TO DISASSEMBLE THE MAIN SET 9) Disassembly fi nish. Figure 1-9...
  • Page 16 2. HOW TO DISASSEMBLE THE WOOFER 1) Remove the 13 screws and pull out the Rear Panel Assembly. Figure 2-1 2) Remove the 5 screw s and Disconnect Harness/FFC cables (Wireless , Power, SPK) . 3) Remove the WF board Assembly and the Wireless Module. Power Inlet Socket Remove EVA...

  • Page 17: How To Disassemble The Woofer

    HOW TO DISASSEMBLE THE WOOFER 4) Disassembly fi nish. Figure 2-3...

  • Page 18: Exploded Views

    EXPLODED VIEWS 1. MAIN SET SECTION 285RR 285RL A80R CASE BOTTOM MAIN CABLE1 271R CABLE2 FRONT LCD01 CABLE3 285LR 285LL A80L WIRELESS 271L...

  • Page 19: Wireless Subwoofer Section

    2. WIRELESS SUBWOOFER SECTION A900 A900W A45W A54W...

  • Page 20: Packing Accessory Section

    3. PACKING ACCESSORY SECTION 801 Owner’s manual 806 Optical cable 808 Batteries (2) 900 Remote control 300 Power cord 833 AC adapter 836 Screws (2) 835 Wall bracket 803 Packing, Main 804 Bag 802 Box 2-13...
  • Page 21 2-14...
  • Page 22 SECTION 3 ELECTRICAL CONTENTS ONE POINT REPAIR GUIDE ..........................3-2 1. NO POWER PROBLEM (PVDD) ......................3-2 2. POWER ON ERROR ..........................3-3 3. NO SOUND (PORTABLE FUNCTION) ....................3-5 4. NO WIRELESS ............................3-6 5. NO BLUETOOTH ............................ 3-7 6.

  • Page 23: One Point Repair Guide

    ONE POINT REPAIR GUIDE 1. NO POWER PROBLEM No power problem occurs when you power on the unit. 1-1. Solution Replace F601, F602. 1-2. How to troubleshoot (Countermeasure) 1) Change adaptor, replace F601, F602. 1-3. Service hint (Any picture / Remark) F601, F602 F601, F602 F601, F602...
  • Page 24 ONE POINT REPAIR GUIDE 2. POWER ON ERROR No display or Not working. 2-1. IC608 1) Check 12 VA at L604. 2) If 12 VA is not output, check 25 VA at pin2 of IC608. 3) 1), 2) is OK.  Replace IC608. L604 L604 IC608...

  • Page 25: Power On Error

    ONE POINT REPAIR GUIDE POWER ON ERROR No display or Not working. 2-3. IC606 1) Check 3.3 VA at L602. 2) If 3.3 VA is not output, check 12 VA at pin3, 5 of IC606. 3) 1), 2) is OK.  Replace IC606. L602 L602 IC606...

  • Page 26: Sound (Portable Function)

    ONE POINT REPAIR GUIDE 3. NO SOUND (PORTABLE FUNCTION) 3-1. Solution Replace IC508 or portable jack (JK854). 3-2. How to troubleshoot (Countermeasure) 1) Please check the soldering status of portable jack (JK854). 2) Please check L854, L855 (portable L/R signal) of portable jack (JK854). If you can’t find input signal, replace JK854.

  • Page 27: Wireless

    ONE POINT REPAIR GUIDE 4. NO WIRELESS 4-1. Solution Replace IC505 on MAIN bottom board. (No 3.3 V) 4-2. How to troubleshoot (Countermeasure) 1) Please check externally status of wireless cable connection on your eyes. (at CN506 and wireless module) 2) Please check 3.3 V of WL_3V3 (at FB507).

  • Page 28: Bluetooth

    ONE POINT REPAIR GUIDE 5. NO BLUETOOTH 5-1. Solution Replace IC502 on MAIN bottom board. (No 3.3 V) 5-2. How to troubleshoot (Countermeasure) 1) Please check externally status of bluetooth cable connection on your eyes. (at CN508 and bluetooth module) 2) Please check 3.3 VA at FB503.

  • Page 29: Sound (Usb)

    ONE POINT REPAIR GUIDE 6. NO SOUND (USB) 6-1. Solution Replace FL851 on MAIN bottom board. 6-2. How to troubleshoot (Countermeasure) 1) Please check externally status USB connector on your eyes. (at JK853) 2) Please check USB data signal at FL851 (signal D-, D+). If you have not data signal, please replace FL851.

  • Page 30: Sound (Optical)

    ONE POINT REPAIR GUIDE 7. NO SOUND (OPTICAL) 7-1. Solution Replace IC507 on MAIN bottom board. 7-2. How to troubleshoot (Countermeasure) 1) Please check 3.3VA at R868. If you can check 3.3 VA, please confirm OPT_DET signal (R5R6) when optical mode. 2) In spite of process 1), set has abnormal output, then replace IC507.

  • Page 31: Hdmi Problem

    ONE POINT REPAIR GUIDE 8. HDMI PROBLEM No display or No Sound. 8-1. IC802 1) Check 3.3 V at L801, L802. 2) If 3.3 V is not output, check 3.3 VA at pin1 of IC802. 3) 1), 2) is OK.  Replace IC802. 8-2.

  • Page 32: D(Dc) Protection

    ONE POINT REPAIR GUIDE 9. D(DC) PROTECTION 9-1. Solution Replace IC702, IC703 (AMP IC) on MAIN board. 9-2. How to troubleshoot (Countermeasure) 1) Check DC voltage of speaker out FL_P/N, TWL_P/N (CN703 pin1, 2, 3, 4) and FR_P/N, TWR_P/N (CN704 pin1, 2, 4, 5). 2) Check resistor crack, cold solder of PWM IC out (R710 ~ R717).

  • Page 33: S(Shut Down) Protection

    ONE POINT REPAIR GUIDE 10. S(SHUT DOWN) PROTECTION 10-1. Solution Replace IC702, IC703 (AMP IC) on MAIN board. 10-2. How to troubleshoot (Countermeasure) 1) Check PVDD voltage (24 V) of FB607. - If PVDD voltage has 8.5 V under, refer to NO POWER PROBLEM guide. (STEP 1-1.) 2) Check GVDD, VDD voltage (12 V) of IC702, IC703 pin1, 2.

  • Page 34: B(Burnt) Protection

    ONE POINT REPAIR GUIDE 11. B(BURNT) PROTECTION 11-1. Solution Replace IC702, IC703 (AMP IC) on MAIN board. 11-2. How to troubleshoot (Countermeasure) 1) Check voltage 12 V of IC702, IC703 at pin1, if 12 V has problem no power repair guide. (STEP 2-1.) 2) If 12 V is ok, IC702, IC703 (AMP IC) on MAIN bottom board.

  • Page 35: Waveforms Of Major Check Point

    WAVEFORMS OF MAJOR CHECK POINT 1. CRYSTAL FIG 1-1. X501 (24 MHz) FIG 1-2. X502, X701 (24.576 MHz) FIG 1-3. X801 (27 MHz) 3-14...

  • Page 36: Flash Memory

    2. FLASH MEMORY FIG 2. VCC, CS#, CLK, DO 3-15...

  • Page 37: Tact Key

    3. TACT KEY 1 ~ 1.13 V 0.72 ~ 0.82 V FIG 3-2. Press FUNC Key FIG 3-1. Press Power Key 0.424 ~ 0.485 V FIG 3-3. Press VOL - Key FIG 3-4. Press VOL + Key 3-16...

  • Page 38: Usb

    4. USB FIG 4-1. 5 V Voltage FIG 4-2. USB D+ FIG 4-3. USB D- 3-17...

  • Page 39: Remote Control

    5. REMOTE CONTROL 16 17 FIG 5-1. Input Voltage FIG 5-2. Low Timing Item Measured Spec. IR Receiver Spec: Input Level 3.3 V 2.7 ~ 5.5 V “ Low” Timing 4.4 ms 3.6 ms ~ 5.04 ms “ High” Timing 4.48 ms 4.08 ms ~ 5.04 ms FIG 5-3.

  • Page 40: Optical

    6. OPTICAL FIG 6-1. OPT_IN FIG 6-2. OPT_DET 3-19...

  • Page 41: Portable

    7. PORTABLE FIG 7-1. ADC IC 5 V FIG 7-2. ADC IC 3.3 V 1 1 .27 Vrms FIG 7-3. Analog Input Voltage 3-20...
  • Page 42 8. AUDIO PWM (1/2) FIG 8-1. PWM IC 3.3 V FIG 8-2. PWM IC 1.2 V FIG 8-3. BCK FIG 8-4. LRCK 3-21...

  • Page 43: Audio Pwm

    AUDIO PWM (2/2) TWL+ TWL- TWR+ TWR- 384.14 KHz 384.17 KHz FIG 8-5. Tweeter L FIG 8-6. Tweeter R FL+ FL- 384.14 KHz FIG 8-7. Front L FR+ FR- 384.17 KHz FIG 8-8. Front R 3-22...

  • Page 44: Wiring Diagram

    WIRING DIAGRAM Wireless 2P, 1.25mm AG, Non Lock SMD (6630V901352) 26P, 0.5mm ADAPTER ST, Non_Lock, SMD 5P, 2.0mm 2P, 1.25mm (6630X60142K) ST, Non Lock , SMD ST, Non Lock , SMD (EAG63270203) (EAG60989201) MAIN 10P, 1.0mm 4P, 2.0mm AG, Lock, SMD ST, Non Lock , SMD (EAG62611102) AG62611102...

  • Page 45: Block Diagram

    BLOCK DIAGRAM AUDIO OUT WL_RESET/WL_MUTE/WL_INT/WL_MSG_RDY AUDIO IN Wireless Wireless WL_CLK/WL_DAT PWM_TX_LRCK/BCK/ADATA2 PWM_SDA/SCL PWM_MUTE FL_P/FL_N AMP IC PWM_RST TAS5612 MCS_TX_LRCK MCS_TX_BCK PS9860 MCS_TX_ADATA 0 MCS_TX_ADATA 1 MCS_TX_ADATA 2 FR_P/FL_N AMP IC TAS5612 AMP_FAULT/AMP_PDN/DC_PROTECTION HDMI_CEC HPD_TX/DDC_SDA/DDC_SCL MLC3730ST HDMI_I2S_BCK HDMI OUT HDMI_I2S_LRCK HDMI_DNMX_ADA Sil9533 HDMI_SDA/SCL HPD_RX/DDC_SDA/DDC_SCL...

  • Page 46: Circuit Diagrams

    CIRCUIT DIAGRAMS 1. MAIN - DSP CIRCUIT DIAGRAM : WAVEFORM NUMBER EAX66934001 Rev1.2(8) MAIN(#2) 2016.01.06 3-27 3-28...

  • Page 47: Main - Pwm & Amp Circuit Diagram

    2. MAIN - PWM & AMP CIRCUIT DIAGRAM : WAVEFORM NUMBER PWM & AMP EAX66934001 Rev1.2(8) MAIN(#3) 2016.01.06 3-29 3-30...

  • Page 48: Main - Power Circuit Diagram

    3. MAIN - POWER CIRCUIT DIAGRAM POWER EAX66934001 Rev1.2(8) MAIN(#4) 2016.01.06 3-31 3-32...

  • Page 49: Main - Hdmi & Jack Circuit Diagram

    4. MAIN - HDMI & JACK CIRCUIT DIAGRAM : WAVEFORM NUMBER HDMI & JACK EAX66934001 Rev1.2(8) MAIN(#5) 2016.01.06 3-33 3-34...

  • Page 50: Front Circuit Diagram

    5. FRONT CIRCUIT DIAGRAM 16 17 : WAVEFORM NUMBER FRONT EAX66795601 Rev1.4(5) 2015.12.10 3-35 3-36...

  • Page 51: Key Circuit Diagram

    6. KEY CIRCUIT DIAGRAM EAX66795701 Rev1.4(6) 2015.12.10 3-37 3-38...

  • Page 52: Circuit Voltage Chart

    CIRCUIT VOLTAGE CHART Location No. Description Pin No. Voltage Spec. Measured Voltage Location No. Description Pin No. Voltage Spec. Measured Voltage Capacitors IC, Sound/Audio IC701 33, 42, 52, 66, 3.3 V(PWM) ±10 % 3.38 V Processor C742 Capacitor, AL,Chip 25.7 V(PVDD) 25.64 V 29, 30, 31, 36, 37, 38 25.7 V(PVDD)

  • Page 53: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN P. C. BOARD DIAGRAM (TOP VIEW) (BOTTOM VIEW) 3-41 3-42...

  • Page 54: Front P. C. Board Diagram

    2. FRONT P. C. BOARD DIAGRAM (TOP VIEW) (BOTTOM VIEW) 3. KEY P. C. BOARD DIAGRAM (TOP VIEW) (BOTTOM VIEW) 3-43 3-44...
  • Page 55 3-45 3-46...
  • Page 56 SECTION 4 WIRELESS SUBWOOFER PART CONTENTS ONE POINT REPAIR GUIDE ..........................4-2 1. POWER ON ERROR ..........................4-2 2. WIRELESS CONNECTION ........................4-4 WAVEFORMS OF MAJOR CHECK POINT ...................... 4-5 1. CRYSTAL ..............................4-5 2. FLASH MEMORY ........................... 4-5 3. VOLTAGE ............................... 4-6 4.

  • Page 57: One Point Repair Guide

    ONE POINT REPAIR GUIDE 1. POWER ON ERROR Fundamental power check points 1-1. 12 V 1) Check 12 V at WL708. 2) If 12 V is not checked at the point, then find PVDD at pin7 of WIC704. 3) 1), 2) is NG  Replace WIC704. If you can’t check PVDD voltage, then replace the PCB board.
  • Page 58 ONE POINT REPAIR GUIDE POWER ON ERROR Fundamental power check points 1-3. 3.3 VA 1) Check 3.3 VA at pin1 of WIC703. 2) Check 3.3V_PWM at pin6 of WIC703. 3) 1), 2) is NG  Replace WIC703. If you can’t check PVDD voltage, then replace the PCB board. WIC703 WIC703 <...

  • Page 59: Wireless Connection

    ONE POINT REPAIR GUIDE 2. WIRELESS CONNECTION Wireless connection malfunction 2-1. 3.3 VA 1) Check 3.3 VA at WFB604. 2-2. Connection 1) Wireless module connection closely. 2) Implement Wireless Factory Reset.   MAIN SET : Soundbar vol MIN and push Mute key (sustain 3 ~ 5 seconds). ...

  • Page 60: Waveforms Of Major Check Point

    WAVEFORMS OF MAJOR CHECK POINT 1. CRYSTAL FIG 1. WX601 (24.576 MHz) 2. FLASH MEMORY FIG 2. VCC, CS#, CLK, DO...

  • Page 61: Voltage

    3. VOLTAGE FIG 3-2. Woofer 12 VA FIG 3-1. Woofer PVDD FIG 3-3. Woofer 3.3 VA FIG 3-4. Woofer 3.3V_PWM...

  • Page 62: Amp Voltage

    4. AMP VOLTAGE FIG 4-2. AMP_12V FIG 4-1. AMP PVDD...

  • Page 63: Pwm

    5. PWM FIG 5-2. Woofer PWM SW- Signal FIG 5-1. Woofer PWM SW+ Signal...

  • Page 64: Led

    6. LED FIG 6-2. Pairing On Status  Green LED FIG 6-1. Pairing Off Status  Red LED...
  • Page 65 4-10...

  • Page 66: Wiring Diagram

    WIRING DIAGRAM 2P, 3.96mm ST, Non Lock SMD (6630VM015A2) Wireless Wireless Module 26P, 0.5mm ST, Non Lock SMD SH4/SH5/SH5B : EAT62593101 (2.4G) (6630X60142K) SH7/SH7B/SH8 : EAT63117401 (5G) 2P, 3.96mm ST, Non Lock , SMD (6602V39002A) Power Bottom Harness Ha a rness...

  • Page 67: Block Diagram

    BLOCK DIAGRAM Wireless LED (RED, GREEN) Wireless AMP_PDN AMP_SD PAIRING Reset KEY AMP IC SW+/SW- TAS5612LA PS9860 4-13 4-14...

  • Page 68: Circuit Diagrams

    DIFFER FROM THE ACTUAL CIRCUIT USED. THIS 2. Voltages are DC-measured with a digital voltmeter 1. WOOFER SMPS & AMP - SMPS CIRCUIT DIAGRAM PERMISSION FROM THE LG CORPORATION. ALL WAY, IMPLEMENTATION OF THE LATEST SAFETY during Play mode. COMPONENTS SHOULD BE REPLACED ONLY WITH...

  • Page 69: Woofer Smps & Amp - Amp Circuit Diagram

    2. WOOFER SMPS & AMP - AMP CIRCUIT DIAGRAM : WAVEFORM NUMBER EAX66919101 Rev1.1(3) MAIN(#1) 2015.12.10 4-17 4-18...

  • Page 70: Circuit Voltage Chart

    CIRCUIT VOLTAGE CHART Part Site Location No. Description Pin Number Specifi cation Real Value (#1, #2) Specifi cation VDD _IO: VDD_IO: 3.37 V 3.37 V #17, 43, 52 2.97 V ~ 3.63 V VDD_CORE: VDD_CORE: WIC601 Sound/Audio PS9860 1.27 V 1.27 V #6, 25, 63 1.08 V ~ 1.32 V...

  • Page 71: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. WOOFER SMPS & AMP P. C. BOARD (TOP VIEW) (BOTTOM VIEW) NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. 4-21 4-22...

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