LG PS-M550WP Service Manual
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LG PS-M550WP Service Manual

Air purifier
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Website http://biz.lgservice.com
AIR PURIFIER
SERVICE MANUAL
MODEL: PS-M550WP
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
February, 2007
Printed in Korea
P/NO : MFL31520606

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  • Page 1 Website http://biz.lgservice.com AIR PURIFIER SERVICE MANUAL MODEL: PS-M550WP CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. February, 2007 Printed in Korea P/NO : MFL31520606...
  • Page 2 Safety instructions SECTION PAGE 3~5 Logics SECTION PAGE 6 Major Specifications of each SECTION Model PAGE 7 Operations/Functions Manual SECTION PAGE 8~16 Main Components SECTION Disassemble/Assemble and Repair Instruction PAGE 17~21 SECTION Electric diagram PAGE 22 SECTION Troubleshooting and inspection direction PAGE 23~27 SECTION...

  • Page 3: Safety Instructions

    Safety instructions For your safety, the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, personal injury, or death. Warning / Caution Warning : This symbol will alert you to hazards or unsafe practices which could cause bodily injury or property damage.
  • Page 4 Safety instructions In-Use Make sure the power cord is plugged firmly and completely into the outlet. Do not operate with wet hands. If the power cord ever becomes frayed or damaged, do not attempt to repair. The cord should be replaced by a qualified technician.
  • Page 5 Safety instructions Caution When Installation When using the unit, maintain a distance of at least 3 feet between the Air Purifier and any Television or audio product. Avoid installing the Air Purifier in direct sunlight and never operate the unit near or around open flames or other heat sources.
  • Page 6 Logics Terminology Filters Introduction 1-1. Negative ion (1) Pre-filter One filter performs antibiotic treatment, anti mold (1) What is a negative ion? treatment, and dust removal, providing a purified Atomic element in the air with negative electrons air. that releases a refreshing feeling. It can be found in a forest, waterfalls, thermal spring and etc.
  • Page 7 Major specifications on each model Model name PS-M550WP Power Supply 120V~60Hz Measurement(W H D) 410mm 550mm 250mm Application Space Weight 9.5kg Color White Design Easy design for convenient operation Power usage 35W(Turbo) Noise Turbo(44dB) Wind speed(CMM) Turbo(5.5CMM) Negative ion Generation...
  • Page 8 Operations/Functions Manual Spare part Name Mainframe Remote Control Receiver Dust Sensor Display Air Outlet Filter Case Safty Net: –The inside of air outlet Photo-Catalyst Handle Plasma Filter Power On/Off Button Pre-Filter Odor Sensor Filter Handle Controller Front Panel Power Plug Air Inlet Operation indicator and controller Filter self-checking indicator...

  • Page 9: Remote Controller

    Allow the filter to dry completely before reinstalling. If not completely dried, it may cause the air purifier to malfunction or cause bad odors to be emitted during use. A replacement filter (Anti-Allergic Filter) can be purchased at an LG service center.

  • Page 10: Battery Installation

    • Remove batteries when the air purifier is stored for extended periods of time. • If controller fails to work after new batteries are installed, contact an LG service center for service. • If controller fails to work, replace the batteries. Always replace both batteries at the same time. Do not mix old and new batteries.

  • Page 11: Operation Mode

    Operations/Functions Manual Operation Mode Air Purifying Operation Purify Indoor Air Power ON/OFF Turns the air purifier on and off. Press once to turn on, again to turn it off. A confirmation tone will sound to indicate that the unit is powering on or turning off. The unit will also produce a tone when the unit is first plugged in.

  • Page 12: Yellow Sandstorm Mode

    Operations/Functions Manual Yellow Sandstorm Mode Purifies indoor air even in extreme conditions such as a sandstorm Power ON/OFF Switch to sandstorm mode by pressing the mode button. The correct fan speed will automatically be selected by the unit. The consumer can increase the fan speed to the next highest level by depressing the fan speed button.

  • Page 13: Additional Function

    Operations/Functions Manual Additional Function Off timer mode function Automatically shuts down after a preset amount of time Example:shut down automatically after 3 hours Power ON/OFF Allows you to set a delay from 1 to 9 hours that will turn the air purifier off automatically.

  • Page 14: Filter Checking Function

    Operations/Functions Manual Filter Checking Function May remind users to clean or replace the filter after use for a certain period. Filter self check light indicates to check filter. Power ON/OFF to shut the unit off. Open front panel to remove filter. Check filter, clean if necessary. (see page 15 to clean filter).

  • Page 15: Filter Cleaning

    Operations/Functions Manual Filter Cleaning • The prefilter should be cleaned on a monthly basis. • Check the filter when the filter indicator light is on. Turn unit off and unplug before cleaning. Grasp the grips on the front panel, pull forward to open. Remove the filter from the mainframe.

  • Page 16: Maintenance

    Operations/Functions Manual Maintenance Remove plug from grounded outlet. Clean and protect the air purifier's mainframe. Cover the air purifier when storing for an extended period of time. Clean with a soft cloth and mild detergent. Exterior case may scratch easily -16-...
  • Page 17 Major components Disassemble Assemble and Repair instruction Please read this before you disassemble Please unplug the power before disassemble. 1. Most components are connected with bolts or mounted on the other parts. Please disassemble according to the instruction. 2. Please do not disassemble unless it is absolutely necessary. Do not disassemble any part that is not on the disassemble instruction.
  • Page 18 Major components Disassemble Assemble and Repair instruction 3. FAN is disassembled by holding and pulling fan. 4. Please remove 3 screws from the Motor Cover using a Screw Driver(+). 5. Remove the Motor Cover. Take out the Motor. Please be careful not to damage the Motor wire when removing the motor.
  • Page 19 Major components Disassemble Assemble and Repair instruction PCB and Sensor Replacement 1. After pulling off the product front cover, take out the Filter Assembly. 2. Separate Connector Bar from the Front Panel using a screw driver (-). (Please be careful not to damage the Connector Bar.) 3.
  • Page 20 Major components Disassemble Assemble and Repair instruction 4. Remove Main PCB Wire. (Please be careful not to damage the Main PCB Wire when removing the Front Case Assembly.) 5. Remove 4 screws from the Main PCB using a screw driver(+). (You can also replace gas sensor, dust sensor, remote control sensor.) 6.
  • Page 21 Major components Disassemble Assemble and Repair instruction Replacing a Connector Bar 1. After the Front Case Assembly separation, remove screws from the Case Back and the Handle Cover (1 screw from the Handle Cover, 3 screws from the Case Back). Take off the Case Back 2.

  • Page 22: Electric Diagram

    Electric diagram -22-...
  • Page 23 Troubleshooting and inspection direction Please take a look at the panel arrangement and the circuit drawing. Complete Malfunction Is input AC voltage • Make sure that power line is plugged in being supplied to both Power • Check the fuse in Power PCB ASM FUSE. PCB ASM C01 terminals? Is DC voltage on both Power •...
  • Page 24 Troubleshooting and inspection direction LED Display Malfunction Are MAIN PCB ASM • Check CN-ACDC connection and Power PCB ASM CONECTOR correctly connected? Is voltage on both C01 terminals • Replace Power PCB ASM. of MAIN PCB ASM 12V? Replace MAIN PCB ASM. Dust &...
  • Page 25 Troubleshooting and inspection direction Fan Malfunction FAN indicator on LED DISPLAY? • Check FILTER S/W contact Is the voltage of • Replace POWER PCB ASM. POWER PCB CN-MOTOR PIN 1~4 310V? Is the POWER • Check CN-MOTOR connection. PCB ASM CN-MOTOR CONNECTOR (Check after power-off) plugged in properly? Is the CN-ACDC...
  • Page 26 Troubleshooting and inspection direction Negative Ion/Positive Ion generation malfunction IS NPI(Negative ion/Positive ion) • Select Negative ion/Positive ion. Selected? Are POWER PCB ASM • Check CN-ACDC connection. and MAIN PCB CONECTOR correctly connected? Is the power of • Replace MAIN PCB ASM. POWER PCB ASM CN-ACDC PIN2&8 (Negative Ion) and PIN2&9 (Positive Ion) AC220V?
  • Page 27 Troubleshooting and inspection direction Not able to set product function with a remote control. Does an alarm occur when • Check batteries of remote controller. you operate the keys on the remote control? • Check MAIN PCB ASM CN-REC Is the power of CN-REC 1&2 DC+5V? connection Replace MAIN PCB ASM.
  • Page 28 PCB Circuit Diagram/Parts Layouts DC PART Parts Layouts AC PART Parts Layouts -28-...
  • Page 29 PCB Circuit Diagram/Parts Layouts DC PART Circuit Diagram -29-...
  • Page 30 PCB Circuit Diagram/Parts Layouts AC PART Circuit Diagram -30-...

  • Page 31: Exploded View

    #EV# Exploded View/ Svc Components inventory Exploded View MODEL: PS-M550WP 2EBDSD 7MDSAA 6EADTC 2MBGAA 7MBNCF 2EBRPS 7ADQDA 6EADTD 7ADQHA 2MBNFA 7ADQAL 7MDJPA 6EADTB 6EADWA 2MJPAA 7ADAPA 7MDJPB 2MCKDP 2EBRPA 2MCKDE 2EBDSG 2MCKDU 2EBFAA 2EAYDC 1MEAGF 1MGCFA 1MCKSP 1MCRPA 1MGCSP 5MBNRA...
  • Page 32 -33-...

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