Samsung DA-E750 Service Manual
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Samsung DA-E750 Service Manual

Samsung DA-E750 Service Manual

Docking audio
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SERVICE
Docking Audio
DA-E750
Refer to the service manual in the GSPN (see the rear cover) for more information.
Docking Audio
Model Name
Model Code
MANUAL
1. Precaution
2. Product Specification
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Schematic Diagram
DA-E750
DA-E750/EN
Contents

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Summary of Contents for Samsung DA-E750

  • Page 1 Docking Audio Model Name DA-E750 Model Code DA-E750/EN SERVICE MANUAL Docking Audio Contents 1. Precaution 2. Product Specification 3. Disassembly and Reassembly 4. Troubleshooting DA-E750 5. PCB Diagram 6. Schematic Diagram Refer to the service manual in the GSPN (see the rear cover) for more information.

  • Page 2: Table Of Contents

    USB Update procedure ....................4 − 7 4.3.2. How to initialize......................4 − 7 PCB Diagram ........................... 5 − 1 5.1. DA-E750 Wiring Diagram......................5 − 1 5.2. DA-E760 Wiring Diagram......................5 − 2 5.3. MAIN PCB Top ........................5 − 3 5.3.1.
  • Page 3 Contents Schematic Diagram ........................... 6 − 1 6.1. DA-E750 Overall Block Diagram ....................6 − 1 6.2. DA-E760 Overall Block Diagram ....................6 − 2 6.3. POWER..........................6 − 3 6.4. JACK/IPOD ........................... 6 − 4 6.5. GAL/AIR/BT/LED ........................6 − 5 6.6.

  • Page 4: Precaution

    TES T ALL EXPO S ED METAL SU RFACES 2-WIRE CORD ALSO TES T WITH PLUG REVER S ED (US ING AC EARTH ADAPTER P LUG GROUND AS R EQ UIRED) Figure 1.1 AC Leakage Test Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 5 A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 6: Servicing Precautions

    CAUTION First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 7: Precautions For Electrostatically Sensitive Devices (Esds)

    8) Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or lifting a foot from a carpeted floor can generate enough static electricity to damage an ESD. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 8: Product Specification

    Play music saved on your Apple devices on the Docking Audio system through a wireless connection. • Dual Docking Audio Speaker System Using the system's dual docking station, dock, charge, and then play either Apple or Samsung Galaxy series devices through the system's built-ins speakers. •...
  • Page 9 Play music saved on your devices (such as your PC, Smart phone, or NAS) through the Docking Audio system via a network connection. • Galaxy Docking Audio Speaker System Using the system's Galaxy docking station, dock, charge, and then play either Samsung Galaxy Series devices through the system's built-ins speakers. • USB Host support Connect and play music files from external USB storage devices such as MP3 players, USB flash memory, etc.

  • Page 10: Specifications

    20 Hz ~ 22 kHz (±3 dB) Frequency response Digital input / 48 kHz PCM 20 Hz ~ 22 kHz (±3 dB) iPad 5 V 2.0 A Docking iPod 5 V 1.0 A Rating Galaxy 5 V 1.0 A Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 11 • S/N ratio, distortion, separation, and usable sensitivity are based on measurement using AES (Audio Engineering Society) guidelines. • Samsung Electronics Co., Ltd reserves the right to change the specifications without notice. • Weight and dimensions are approximate. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 12: Specifications Analysis

    5 V, 1.0 A 5 V, 2.1 A iPad Docking Rating 5 V, 1.0 A 5 V, 1.0 A 5 V, 1.0 A Galaxy Galaxy Tab 5 V, 2.0 A O: Feature Included X: Not Included Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 13: Accessories

    LAN Cable GL39-00050A Ferrite Core (Large) 3301-000144 (For Power Cable 1EA) Ferrite Core 3301-001068 Power Cord 3903-000525 Local Samsung Dealer Batteries (3V) 4301-000108 Remote Control AH59-02483A Spacer Cover AH63–02996A Audio Cable BN39-01286A Cloth Clean BN63–02368B Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 14: Disassembly And Reassembly

    : Woofer M 4X20 BLK HEX CAUTION Be careful not to make any scratches as you remove them. Connected wire separate with Assy Cover-Bottom. After unfasten 9 screws on the Bracket-Bottom. Remove Holder-SMPS. : M 3X6 SLK Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 15 Unfasten 4 screws on the Assy Cover-Jack. : M 4X16 BLK HEX Separate Assy Cover-Jack from Cover-Body. * Be Careful separate the connected Antenna from Cover-Body. Unfasten 3 screws on the Bracket-VT. : M 3X8 BLK Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 16 Unfasten 3 screws on the Holder-Dock seal and remove the solidified bond. : M 3X8 BLK And then, separate Assy Docking from Cover-Body. Separate Woofer from Cover-Body, unfasten 3 screws on the Holder-Button seal and remove the solidified bond. : M 3X8 BLK Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 17 Description Photo 10. After Assy Button-Function separate with Cover-Body, unfasten 4 screws on the PCB-Key. : M 3X8 BLK 11. Remove the Rubber-Foot and unfasten 1 screw on the Foot-Bottom. : M 3X8 BLK Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 18 3. Disassembly and Reassembly Description Description Photo 12. Divide PCB-Remo and Cover-Body. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 19: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4.1. Checkpoints by Error Mode Oscilloscope Setting Values Normal Voltage 24 MHz 32.768 KHz Voltage/DIV 2 V/div 0.5 V/div 0.5 V/div TIME/DIV 100 ms/div 10 ns/div 5 us/div Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 20: No Power

    Re pla ce the S MP S . (CN1001) output. Ye s Re pla ce Ma in P CB. Ye s Re pla ce Docking P a rt or P owe rs On? LED P CB. Ye s END. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 21: No Output

    Fig. 4-1. Che ck NG S pe a ke r’s All S pe a ke rs a re No Output? Conne ction a nd Ca ble . Ye s Cha nge Ma in P CB. Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 22 R6082 33OHM 33OHM R601 2 SPDI F_SEL D_MO_C I R602 8 33OHM 33OHM CST_MA K DATA_MICOM OUT/CRESCENDO IN R6093 CII_RESET 33OHM CRESCENDO_STROBE/ M I COM _ACK R601 4 USB_2ND_SEL * 6.7. C2+ <Fig. 4-1> Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 23: Measures To Be Taken When The Protection Circuit Operates

    1) Voltage of SMPS (+5.2 VS) is higher than standards. Normal Condition Voltage Range : +5.2 VS 2) Over-current occurs to FET. (Over-output or Output short) 3) FET’s temperature exceed 150 °C. 4) No supply voltage on GATE DRIVER. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 24: Check Amp In Power Protection

    10 kΩ • In case of large difference with above value → AMP PCB has a problem ET CH AS S I S P E AK E R O U T P U T Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 25: Initialization & Update

    4.3.2. How to initialize Using the remote control 1) Let Set be Standby Mode. 2) Push “Next” Button during about 5 seconds, using Remote Controller. 3) Front LED will be blinking 2 times. 4) Initialization complete. Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 26: Pcb Diagram

    18 WP S /P BC DGND 19 19 DGND AIR_S P DIF_IN 20 20 AIR_S P DIF_IN CN30 03 J ACK AS S Y iP OD/Ga la xy AS S Y BT AS S Y Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 27: E760 Wiring Diagram

    FANET_RX 14 14 FANET_RX FANET_TX 15 15 FANET_TX WP S/P BC 16 16 WP S/P BC CN3002 CN3001 CN3003 JACK AS S Y Ga la xy Ta b AS S Y BT AS S Y Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 28: Main Pcb Top

    5. PCB Diagram 5.3. MAIN PCB Top CN4002 CN4003 CN4001 CN5001 CN8005 IC5004 IC8002 IC6001 IC7005 TP 1 CN5002 CN6003 CN1001 Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 29: Pin Connection

    Tab_5V A_SPI_CS Tab_5V A_SPI_CLK Tab_5V BT_SPDIF A_SPI_NRST Tab_TX A_SPI_REQ Tab_RX A_FACTORY_RST DGND 7) CN5001 A_1.2V_CTL DGND Remocon A_1.9V_CTL Tab_det Pin No. Signal FANET_RX Tab_acc_det M_3.3V FANET_TX Audio_R REM_DATA WPS/PBC Audio_L DGND DGND AGND AIR_SPDIF_IN Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 30: Test Point Wave Form

    5. PCB Diagram 5.3.2. Test Point Wave Form Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 31: Main Pcb Bottom

    5. PCB Diagram 5.4. MAIN PCB Bottom IC6004 IC3004 Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 32: Smps Pcb Top

    5. PCB Diagram 5.5. SMPS PCB Top Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 33: Smps Pcb Bottom

    5. PCB Diagram 5.6. SMPS PCB Bottom Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 34: Vt Pcb Top

    5. PCB Diagram 5.7. VT PCB Top Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 35: Vt Pcb Bottom

    5. PCB Diagram 5.8. VT PCB Bottom Copyright© 1995-2012 SAMSUNG. All rights reserved. 5-10...

  • Page 36: Jack Pcb Top

    5. PCB Diagram 5.9. JACK PCB Top CN1003 5-11 Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 37: Jack Pcb Bottom

    5. PCB Diagram 5.10. JACK PCB Bottom Copyright© 1995-2012 SAMSUNG. All rights reserved. 5-12...

  • Page 38: Remote Pcb Top/Bottom

    5. PCB Diagram 5.11. REMOTE PCB Top/Bottom 5-13 Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 39: Key Pcb Top

    5. PCB Diagram 5.12. KEY PCB Top Copyright© 1995-2012 SAMSUNG. All rights reserved. 5-14...

  • Page 40: Schematic Diagram

    6. Schematic Diagram 6. Schematic Diagram 6.1. DA-E750 Overall Block Diagram • Main System uses Digital Signal Processor which is ESS Crescendo2+ (ES8680DSC) Re m o c o n • The Crescendo2+ include DIR, ADC, DAC, PWM IC. Service o...

  • Page 41: E760 Overall Block Diagram

    AN ALO G 2 CH Wo o fe r G a l S2 OP-AMP IR4302 4560 1201-003320 (60W/8o hm ) S P DIF Airpla y m odu le SMPS PWR_ON, PVDD(+/-18V), VT+12V Se ria l DRAM Fla sh Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 42: Power

    0. 01OHM 0. 01 OHM AG ND I C1005 UN DEFI NED UNDEFIN ED BD101 1 BD101 0 CB20 12 UA300T C2+ 74 ,8 5 02 03_ FOR C SC AG ND AG ND Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 43: Jack/Ipod

    DG ND MG ND 2 LOPI VA16G05 VT30 18 AUX_R 12507W S- H04G LOPI VA16G05 VT30 19 AUX_SENS MG ND 2 DG ND DG ND 12507W S- H09G DG ND AG ND DG ND Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 44: Gal/Air/Bt/Led

    A_1. 9V_CTL LOPI VA16G05 VT402 9 FANET_RX LOPI VA16G05 VT403 0 FANET_TX LOPI VA16G05 VT403 1 W PS/ PBC LOPI VA16G05 VT403 2 AI R_SPDI F MGND2 12507W S- H20G DG ND DG ND Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 45: Micom

    CRESCENDO_STROBE/ M I COM _ACK CST_M AK D_CO_M I DATA_M I COM OUT/ CRESCENDO I N DG ND D_MO _CI 53, 70, 73 R501 5 DATA_CRESCENDO OUT/ M I COM I N CI I _RESET 100OHM DG ND Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 46 DG ND VC3. 3V TO F LASH R609 5 33OHM A_SPI _CS 100NF R607 4 10KOHM 33OHM I POD_DET R604 4 C601 1 0214_BT NET NAM I NG & PULL UP REM OVE DG ND Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 47: Test Point Wave Form

    6. Schematic Diagram 6.7.1. Test Point Wave Form Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 48: Amp Sw

    MM BT2222A Q7005 DTA114 EUA Q700 1 6. 8KOH M VSS-5V 0210_BOTTOM ADDED 1N41 48 W S 1/ 10 W UN DEFI NED R7021 D700 4 47 KOH M AG ND 1/ 10W 1N414 8WS Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 49: Amp Front

    3KOH M 1/ 10 W VSS- 5V Q7010 VT_SEL 1/ 16W VT_BUFF_OUT_FR 1KOHM 1/ 16W 1/ 16W AG ND AG ND R7144 R7150 R7152 VT_OUT_FR 4. 7KOH M 4. 7KOH M AG ND Copyright© 1995-2012 SAMSUNG. All rights reserved. 6-10...

  • Page 50: Smps

    1N4 148 W 4R7 (20 12) 10 4/50V(2012) 1K(201 2) CA858 13,14 10 4/50V DA-E750(AIR DO CK 100 W) _ LPR CA802 RA802 10 1/1KV SAMSUNG CODE : F REE AH44- 0026 9A QA80 LA852 -17 .5V / 3.5 A (Pe ak)
  • Page 51 120KO HM R1017 VT_IN_FR 250V 100UF Q1001 Q1002 C1013 C1009 250V VT_HT_GND 22UF 6.3V VT_HT VT_IN_GN D VT_GND VT_GND VT_OUT_GND VT_HT_GND 0315_EMI_OPT 0315_EMI_OPT ION 1/4W 1/4W 0OHM 0O HM VT_GND VT_HT_GND VT_PGND VT_HT_GND Copyright© 1995-2012 SAMSUNG. All rights reserved. 6-12...
  • Page 52 10UF 10UF 100V 100V CS5171EDR8G IC2001 VT_GND PGND Test C2006 AGND 10UF 100V HT12V VT_AGND VT_CTL C2004 SHUT DOWN 10UF BELOW 1.05V 100V 0315_PREVENT F OR SHO RT WITH 190V VT_PGND 47UF VT_PGND 6-13 Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 53: Jack-1

    33O HM AIR_S PDIF_OUTPUT MLVS-0603- E08 MLVS-0603- E08 100NF 100NF 330P F 330P F 330P F TP26 MGND2 330P F CB2012 UA300T DGND 0.01OH M 100NF 100NF 100NF UNDEFINED 100NF BD1001 DGND AGND DGND Copyright© 1995-2012 SAMSUNG. All rights reserved. 6-14...

  • Page 54: Jack-2

    30KOHM 1.2KOHM 2203-005480 0303_T RANSIENT NG SDCW2012H-2-900TF MGND1 MGND5 DGND UNDEFINED FT4001 MGND3 DGND 30KOHM DGND AIR_ETH_TXN 1/16W AIR_ETH_TXP DGND AIR_ETH_RXN DGND AIR_ETH_RXP MGND4 FT4002 DGND SDCW2012H-2-900TF UNDEFINED MGND2 MGND6 DGND DGND DGND 6-15 Copyright© 1995-2012 SAMSUNG. All rights reserved.

  • Page 55: Remocon

    6. Schematic Diagram 6.15. REMOCON M_+3.3V 1/16W 100OHM 47OHM 1/10W MGND1 DGND Copyright© 1995-2012 SAMSUNG. All rights reserved. 6-16...

  • Page 56: Key

    AUX_LED WIFI_LED AIRPLAY_RED_LED WIFI_RED_LED DGND VOL+ FUNC PLAY VOL- KEY_IN DHT-1187AC DHT-11 87AC DHT-11 87AC DHT-1187A C 1.5KOHM 1.2KOHM 1KOHM 820OHM SW_UP SW_FUNC SW_PLAY SW_ DN 1/16W 1/16W 1/16W 1/16W MGND1 MGND2 DGND 6-17 Copyright© 1995-2012 SAMSUNG. All rights reserved.
  • Page 57 E.Asia, W.Asia, https://gspn2.samsungcsportal.com China, Japan N.America, S.America https://gspn3.samsungcsportal.com This Service Manual is a property of Samsung Electronics Co.,Ltd. © 2012 Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under All rights reserved. applicable International and/or domestic law.

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