LG BB5521A Sound Bar Service Manual and Repair Guide

3D Blu-ray™/ DVD SOUND BAR SYSTEM SERVICE MANUAL MODEL: BB5521A (BB5521A, S52A1-D) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. Website http://biz.lgservice.com Internal Use Only MODEL: BB5521A (BB5521A, S52A1-D) SERVICE MANUAL 2 1 0 2 , MARCH AFN75741127 : O N / P

1-1 CONTENTS SECTION 1 ........ SUMMARY SECTION 2 ........ ELECTRICAL SECTION 3 ........ CABINET & MAIN CHASSIS SECTION 4 ........ BCM7633 F/E LOADER PART

1-2 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR BD-HTS PRODUCTS............................................ 1-3 SERVICING PRECAUTIONS .......................................................................................................................... 1-4 • GENERAL SERVICING PRECAUTIONS • INSULATION CHECKING PRODEDURE • ELECTROSTATICALLY SENSITIVE (ES) DEVICES HIDDEN KEY MODE........................................................................................................................................ 1-5 SOFTWARE UPGRADE .................................................................................................................................. 1-6 FIRMWARE UPDATE FOR WIRELESS DEVICE ......................................................................................... 1-7 NETWORK UPDATE ....................................................................................................................................... 1-8 SPECIFICATIONS .......................................................................................................................................... 1-11

1-3 PRODUCT SAFETY SERVICING GUIDELINES FOR BD-HTS PRODUCTS IMPORTANT SAFETY NOTICE This manual was prepared for use only by properly trained audio-video service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs. Special components are also used to prevent x-radiation, shock and fire hazard. These components are indicated by the letter “x” included in their component des- ignators and are required to maintain safe performance. No deviations are allowed without prior approval by LG Corporation. Circuit diagrams may occasionally differ from the actual circuit used. This way, implementation of the latest safety and performance improvement changes into the set is not delayed until the new service literature is printed. CAUTION : Do not attempt to modify this product in any way. Never perform customized installations without manufacturer’s approval. Unauthorized modifications will not only void the warranty, but may lead to property damage or user injury. Service work should be performed only after you are thoroughly familiar with these safety checks and servicing guidelines. GRAPHIC SYMBOLS The exclamation point within an equilateral triangle is intended to alert the service personnel to important safety information in the service literature. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presence of noninsulated “dangerous voltage” that may be of sufficient magnitude to constitute a risk of electric shock. The pictorial representation of a fuse and its rating within an equilateral triangle is intended to convey to the service personnel the following fuse replacement caution notice: CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED NEAR EACH FUSE. SERVICE INFORMATION While servicing, use an isolation transformer for protection from AC line shock. After the original service problem has been corrected, make a check of the following: FIRE AND SHOCK HAZARD 1. Be sure that all components are positioned to avoid a possibility of adjacent component shorts. This is especially important on items trans-ported to and from the repair shop. 2. Verify that all protective devices such as insulators, barriers, covers, shields, strain reliefs, power supply cords, and other hardware have been reinstalled per the original design. Be sure that the safety purpose of the polarized line plug has not been defeated. 3. Soldering must be inspected to discover possible cold solder joints, solder splashes, or sharp solder points. Be certain to remove all loose foreign par- ticles. 4. Check for physical evidence of damage or deterioration to parts and components, for frayed leads or damaged insulation (including the AC cord), and replace if necessary. 5. No lead or component should touch a high current device or a resistor rated at 1 watt or more. Lead tension around protruding metal surfaces must be avoided. 6. After reassembly of the set, always perform an AC leakage test on all exposed metallic parts of the cabinet (the channel selector knobs, antenna terminals, handle and screws) to be sure that set is safe to operate without danger of electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd 150V AC type capacitor between a known good earth ground water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across the combination of 1500 ohm resistor and .15 mfd capacitor. Reverse the AC plug by using a non-polarized adaptor and repeat AC voltage measure- ments for each exposed metallic part. Voltage measured must not exceed 0.75 volts RMS. This corresponds to 0.5 milliamp AC. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately. TIPS ON PROPER INSTALLATION 1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf space over, or close to, a heat duct, or in the path of heated air flow. 2. Avoid conditions of high humidity such as: outdoor patio installations where dew is a factor, near steam radiators where steam leakage is a factor, etc. 3. Avoid placement where draperies may obstruct venting. The customer should also avoid the use of decorative scarves or other coverings that might obstruct ventilation. 4. Wall- and shelf-mounted installations using a commercial mounting kit must follow the factory-approved mounting instructions. A product mounted to a shelf or platform must retain its original feet (or the equivalent thickness in spacers) to provide adequate air flow across the bottom. Bolts or screws used for fasteners must not touch any parts or wiring. Perform leakage tests on customized installations. 5. Caution customers against mounting a product on a sloping shelf or in a tilted position, unless the receiver is properly secured. 6. A product on a roll-about cart should be stable in its mounting to the cart. Caution the customer on the hazards of trying to roll a cart with small casters across thresholds or deep pile carpets. 7. Caution customers against using extension cords. Explain that a forest of exten- sions, sprouting from a single outlet, can lead to disastrous consequences to home and family. CAUTION : CLASS 1M VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN. DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS Use of controls, adjustments or the performance of procedures other than those specified herein may result in hazardous radiation exposure.

1-4 SERVICING PRECAUTIONS CAUTION: Before servicing the BD-HTS covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE: if unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions. Remember Safety First : General Servicing Precautions 1. Always unplug the BD-HTS AC power cord from the AC power source before: (1) Removing or reinstalling any component, circuit board, module, or any other assembly. (2) Disconnecting or reconnecting any internal electrical plug or other electrical connection. (3) Connecting a test substitute in parallel with an electrolytic capacitor. Caution : A wrong part substitution or incorrect polar- ity installation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this BD-HTS or any of its assemblies. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not required. 4. Do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped. 5. Do not apply AC power to this BD-HTS and / or any of its electrical assemblies unless all solidstate device heat sinks are correctly installed. 6. Always connect the test instrument ground lead to an appropriate ground before connecting the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance meter (500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1Mohm. Note 1 : Accessible Conductive Parts include Metal panels, Input terminals, Earphone jacks,etc. Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES 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 ES 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 ES 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 ES devices. 5. Do not use freon-propelled chemicals. These can generate an electrical charge sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil,or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Normally 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 ES device.)

1-5 HIDDEN MODE AVAILABLE STATUS ENTRANCE KEY EXIT KEY DISPLAY DISPLAY SYSTEM INFORMATION SETUP MENU ON 1+3+9+7+1+3+9+ ENTER or MP2 PAUSE or HOME ※ 'Pause' Key FACTORY RESET SYSTEM INFORMATION (KEY,VERSION) DISPLAY DEBUG INFORMATION (NO DISC or OPEN) and MENU OFF 4+5+6+2+5+8+0 RETURN/PAUSE 1.PLATFORM INFORMATION 2.FATAL ERROR MESSAGE 3.SYSTEM DEBUG MESSAGE 4.LOADER DEBUG MESSAGE 5.HDMI CONNECTION INFO EEPROM INITIAL POWER ON STATUS Front 'STOP' + RMC '0' for 5s Auto exit "E2P CLEAR" DOOR LOCK DVD FUNCTION and POWER ON STATUS Front 'STOP' + RMC 'STOP' for 5s Toggling "Locked" display for 3s WIRELESS SPK REMATE POWER ON STATUS Front 'STOP' + RMC 'MUTE' "REMATE" HIDDEN KEY MODE

1-6 SOFTWARE UPGRADE • Burn a DVD recordable disc or USB with a file that is named to “LG_HB_6100B33.ROM”. • Insert a upgrading disc or USB. • Show help message for disc upgrade as follows. < in the case of Back End program & Front End program > Press play key to upgrade and it will show progress information After completing upgrade then power is off.

1-7 FIRMWARE UPDATE FOR WIRELESS DEVICE 1. WIRELESS TX MODULE UPDATE METHOD Update must be performed after turning off RX. 1) USB update - During the software update procedure, do not turn off the unit. 1-1) Copy the update file to the USB device after rename as “WIRELESS_HLX56.BIN”. 1-2) Insert a USB device and perform the update. - It is indicated “WRITE xx” during transmission (xx is progress rate %.). 1-3) If the update is finished, TX shall be powered off automatically. 2) Remove the power cord. After 5 seconds, reconnect the cord and turn on TX. 3) Factory 3-1) Press set “STOP” + remote control “6” during 3 seconds to perform TX FACTORY. - “WL RESET” appears on FLD. 3-2) Press PAIRING button on RX during 5 seconds. - LED blinks yellow and red alternately to 0.5 second intervals. Condition: After wireless module update, you must perform TX FACTORY. 2. WIRELESS TX MICOM UPDATE METHOD Update must be performed after turning off RX. 1) USB update - During the software update procedure, do not turn off the unit. 1-1) Copy the update file to the USB device after rename as “WIRELESS_MICOM_HLX56.HEX”. 1-2) Insert a USB device and perform the update. - It is indicated “WRITE xx” during transmission (xx is progress rate %.). ※ In case of connection is unstable; In case of update is no response more than 20 seconds; Update fail ※ At this time, turn off TX then Micom update will fail and the previous version of program will work. 1-3) If the update is finished, TX shall be powered off automatically. 2) Remove the power cord. After 5 seconds, reconnect the cord and turn on TX.

1-8 NETWORK UPDATE 1) Press Home on the Remote Control. 2) Press or to select the Setup mode. 3) Select Others --> Software Update 4) On the UPDATE window, press or ENTER to check for the newest update. (Checking will takes about one minute.) Caution: Pressing Enter while checking for the update will end process You can update the firmware by connecting your unit device directly to the S/W update server. Configuring Network Settings To update the firmware by connecting your player directly to the S/W update server, your player must be connected to network. If your player is not connected to network, make a physical connection.

1-9 If newer version exists, 5) If newer version exists, the message “A new update was found. Do you want to download it?” appears. Select OK to download the update. (Selecting CANCEL will end the update.) 6) The player starts downloading the newest update from the SBP server. 7) When downloading is completed, the message, “Download is complete. Do you want to update?” appears. 8) Select OK to start updating

LG BB5521A Sound Bar Service Manual and Repair Guide

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