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LG HF85JA-NA Service Manual
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LG HF85JA-NA Service Manual

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DLP PROJECTOR
SERVICE MANUAL
CHASSIS : FZ71H
MODEL : HF85JA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL70209903 (1707-REV00)
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
HF85JA-NA
CONFIDENTIAL

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Summary of Contents for LG HF85JA-NA

  • Page 1 Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.

  • Page 2: Table Of Contents

    SOFTWARE UPDATE ................6 BLOCK DIAGRAM ................... 7 EXPLODED VIEW ..................8 DISASSEMBLY GUIDE ................9 ASSEMBLY GUIDE ................10 TROUBLE SHOOTING GUIDE .............. 11 - 2 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 3: Safety Precautions

    When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 4: Specification

    Market HF85JA-NA Europe HF85JS-EU Picture size FULLHD (1920 x 1080) Aspect ratio 16:9 Panel Resolution Operating Temperature Operating Humidity Storage Temperature Storage Humidity - 4 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 5 33.71 29.97 74.176 HDTV 1080P 1920*1080 33.75 30.00 74.25 HDTV 1080P 1920*1080 67.43 59.94 148.352 HDTV 1080P 1920*1080 67.50 60.00 148.50 HDTV 1080P - 5 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 6: Software Update

    (7) If Content list like a Picture 5 is displayed, select the [x] button, and keep going on update. ※ If Projector have been connected on Internet by Wired or Wireless AP, The Projector will Update by itself. - 6 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 7: Block Diagram

    BLOCK DIAGRAM CW control R/G/B Enable - 7 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 8: Exploded View

    It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 8 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 9: Disassembly Guide

    4. Remove the 4 screws from mid-case 5. Separate out the engine from top case - 9 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 10: Assembly Guide

    Bottom side 5. Middle Case + Combo Assemble 9. Bottom Assy : Φ2.6 Screw 4ea 6. Main B/D+ Middle case : Φ2.6 Screw 5ea - 10 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

  • Page 11: Trouble Shooting Guide

    Local Key doesn’t work or may be worked abnormally P801 Fan doesn’t work, and set turns off automatically P105 WIFI, Bluetooth Wi-Fi, Bluetooth Function is not working - 11 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 12 Main Board Laser Lamp doesn’t Work, Set turns off automatically Cannot Working Remote Controller, Sound out(AV, SPDIF), Main Board Wired Lan and DTV Tuner - 12 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 13 USB memory defect > try to play movie file on PC CODEC. Mirroring, connecting Fail WiFi environment, OS Ver. In the Moble phone, WiFi B/D, WIFI cable WiFi module Miracast/WD - 13 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
  • Page 14 2. Flow Chart for major symptom - 14 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.

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