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Related Manuals for LG 32LG40-UG
Summary of Contents for LG 32LG40-UG
- Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV/DVD Combo SERVICE MANUAL CHASSIS : LA89D MODEL : 32LG40 32LG40-UG CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Page 2: Table Of Contents
ADJUSTMENT INSTRUCTION ............. 10 TROUBLE SHOOTING ................16 BLOCK DIAGRAM ................. 28 EXPLODED VIEW .................. 34 SVC. SHEET ....................Copyright © 2008 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes... -
Page 3: Product Safety
An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2008 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes... - Page 4 Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright © 2008 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
- Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2008 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
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Page 6: Specification
Disc., (These Spec CD-R/W, CD-Audio, MP3 Audio is up to DVD load’s one) CD Digital Audio(CD TEXT), JPEG Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes... - Page 7 0.326 0.329 0.332 Color Distortion, DG 10.0 Color Distortion, DP 10.0 Color S/N, AM/FM 43.0 Color Killer Sensitivity Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
- Page 8 1024*768 48.363 60.00 65.00 VESA(XGA) 1280*768 47.776 59.87 79.50 CVT(WXGA) 1360*768 47.720 59.799 84.75 CVT(WXGA) 1366*768 47.13 59.65 Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
- Page 9 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
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Page 10: Adjustment Instruction
3) Adjust by commanding AUTO_COLOR_ADJUST (0xF1) 8. FACTORY MODE : ON 0x00 0x02 instruction. 9. DEBUG MODE : OFF Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes... - Page 11 4) Check the item to download from the <Test> item 4-1) HDMI & RGB: Check Digital & Analog 4-2) (Only)HDMI: Check Digital only Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
- Page 12 - VAL : Value of FOS Data - CS : Checksum - A : Acknowledge Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX} Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
- Page 13 15 minutes or longer. - Make sure that the back light is turned on by using no signal and the full white pattern or others. Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...
- Page 14 - After completing the final test, in order to set the set to the shipping condition, press the In-Stop key of the R/C to make sure that the set is turned off. Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only...
- Page 15 Stick from the USB jack. 6) Press the IN-START button of the remote controller to check the upgraded S/W version. Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
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Page 16: Troubleshooting
Check LVDS Cable for damage or Replace Cable open conductors. Check LCD Module Control board Refer to Module CAS Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes... - Page 17 Falling Time of Vs (90% to 10%) msec Time interval between 90% of Vcc and 90% of Vs 2000 msec when Power On Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
- Page 18 Command Data Stop for Addr By Slave By Slave By Master Master : Image Board Slave : PDP Module Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
- Page 19 Mstar(IC100) has problems #33(TXAC-) , #32(TXAC+) , #17(TXBC-) , #16(TXBC+) Check LCD Module Control board Refer to Module CAS Copyright © 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
- Page 20 Replace it. C1711, C1712, C1713,R2021, R2022, R2023 Check signal IC903 output Replace it R991, R990, R993 Replace Mstar(IC100) Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
- Page 21 R673, R674 Check signal Replace it. R678, R679, R680 Check Signal Replace it C116, C124, C126 Replace Mstar(IC100) Copyright © 2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
- Page 22 C949 (Composite) Check signal Replace it C111 (Composite), C109 / C110 (S-Video) (Rear) C174 (Composite) (Side) Replace Mstar(IC100) Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
- Page 23 IC Power & I2C Signal (#5, #6) Check IC803 Clock Signal Replace IC803 #26, #27 Replace Mstar(IC100) Copyright © 2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
- Page 24 Follow procedure digital TV video Check video output trouble shooting Follow procedure All source audio trouble Replace Mstar shooting Copyright © 2008 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
- Page 25 Check SIF buffer signal Replace it Check SIF signal Replace it C409 Follow procedure All source audio trouble Replace Mstar shooting Copyright © 2008 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
- Page 26 Check I2S signal Replace it or IC100 R1035, R1037, R1038 Check Audio clock Replace it R1036 Replace Mstar Copyright © 2008 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
- Page 27 - USB power could be disabled by inrushing current - In this case, remove the device and try to reboot the TV (AC power off/on) Copyright © 2008 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only...
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Page 28: Block Diagram
BLOCK DIAGRAM 1. OVERVIEW Copyright © 2008 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes... - Page 29 2. POWER FLOW Copyright © 2008 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
- Page 30 3. VIDEO Copyright © 2008 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...
- Page 31 4. AUDIO Copyright © 2008 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only Only for training and service purposes...
- Page 32 Mstar (NTP3000A) Reset (M62320) 6. I2C DESIGN Mstar TUNER Demodulator Audio AMP I/O exp. TDVF-H051F LGDT3304 NTP3000A M62320 Copyright © 2008 LG Electronics. Inc. All right reserved. - 32 - LGE Internal Use Only Only for training and service purposes...
- Page 33 Crystal Demodulator Power DTV: on LGDT3304 Etc Mode: - Main Power M5V-On Stby5V DC/DC 3.4V Module RL-On 3.4V-On Copyright © 2008 LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only Only for training and service purposes...
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Page 34: Exploded View
X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 34 - LGE Internal Use Only Only for training and service purposes... - Page 35 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 36 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 37 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 38 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 39 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 40 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 41 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 42 HDMI1 USB DOWN STREAM SIDE_HDMI Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 43 F i b e r O p t i c Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 44 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 45 Aug., 2008 P/NO : MFL42540004 Printed in Korea...