Internal Use Only

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LCD TV SERVICE MANUAL

CHASSIS : LP7BB
MODEL : 32LB9RT MODEL : 32LB9RTE

CAUTION

32LB9RT-MD 32LB9RTE-MB
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CONTENTS

CONTENTS.... 2 SAFETY PRECAUTIONS...3 SPECIFICATION...6 ADJUSTMENT INSTRUCTION...10 TROUBLE SHOOTING...14 BLOCK DIAGRAM...25 EXPLODED VIEW.... 26 EXPLODED VIEW PARTS LIST..27 REPLACEMENT PARTS LIST... 28 SVC. SHEET....
Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes

LGE Internal Use Only

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. 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.

General Guidance

An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation. If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified. When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 10mm away from PCB. Keep wires away from high voltage or high temperature parts.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet. Do not use a line Isolation Transformer during this check. Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to 0.5mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.
Leakage Current Hot Check circuit
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to be sure the set is safe to operate without damage of electrical shock.

AC Volt-meter

Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1M and 5.2M. 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.

To Instruments exposed METALLIC PARTS

0.15uF

Good Earth Ground such as WATER PIPE, CONDUIT etc.

1.5 Kohm/10W

Replaceable batteries
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS

ADVARSEL

Lithiumbatteri - Eksplosionsfare ved fejlagtig hndtening. Udskiftning m kun ske med batteri at samme fabrikat og type. Levr det brugte batteri tilbage til leverandoren

SERVICING PRECAUTIONS

CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First. General Servicing Precautions 1. Always unplug the receiver AC power cord from the AC power source before; a. Removing or reinstalling any component, circuit board module or any other receiver assembly. b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection. c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc". 3. Do not spray chemicals on or near this receiver or any of its assemblies. 4. Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-abrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength) CAUTION: This is a flammable mixture. Unless specified otherwise in this service manual, lubrication of contacts in not required. 5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this service manual might be equipped. 6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed. 7. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last. 8. Use with this receiver only the test fixtures specified in this service manual. CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver. 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 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 to prevent 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 type 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 electrical charges 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. (Otherwise 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.) General Soldering Guidelines 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500F to 600F. 2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead. 3. Keep the soldering iron tip clean and well tinned. 4. Thoroughly clean the surfaces to be soldered. Use a mall wirebristle (0.5 inch, or 1.25cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners. 5. Use the following unsoldering technique a. Allow the soldering iron tip to reach normal temperature. (500F to 600F) b. Heat the component lead until the solder melts. c. Quickly draw the melted solder with an anti-static, suctiontype solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the circuit board printed foil. 6. Use the following soldering technique. a. Allow the soldering iron tip to reach a normal temperature (500F to 600F) b. First, hold the soldering iron tip and solder the strand against the component lead until the solder melts. c. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil. d. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush.

IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. Removal 1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. 2. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC. Replacement 1. Carefully insert the replacement IC in the circuit board. 2. Carefully bend each IC lead against the circuit foil pad and solder it. 3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas). "Small-Signal" Discrete Transistor Removal/Replacement 1. Remove the defective transistor by clipping its leads as close as possible to the component body. 2. Bend into a "U" shape the end of each of three leads remaining on the circuit board. 3. Bend into a "U" shape the replacement transistor leads. 4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact then solder each connection. Power Output, Transistor Device Removal/Replacement 1. Heat and remove all solder from around the transistor leads. 2. Remove the heat sink mounting screw (if so equipped). 3. Carefully remove the transistor from the heat sink of the circuit board. 4. Insert new transistor in the circuit board. 5. Solder each transistor lead, and clip off excess lead. 6. Replace heat sink. Diode Removal/Replacement 1. Remove defective diode by clipping its leads as close as possible to diode body. 2. Bend the two remaining leads perpendicular y to the circuit board. 3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board. 4. Securely crimp each connection and solder it. 5. Inspect (on the circuit board copper side) the solder joints of the two "original" leads. If they are not shiny, reheat them and if necessary, apply additional solder. Fuse and Conventional Resistor Removal/Replacement 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. 3. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures.

(1) Performance : LGE TV test method followed (2) Demanded other specification Safety : CE, IEC Specification EMC : CE, IEC
4. General TV Specification
No 1. 2. Item Video input applicable system Receivable Broadcasting System 1) NTSC 2) PAL M 3) PAL N 3. RF Input Channel BAND VHF UHF CATV 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. Input Voltage Market Operating Environment Storage Environment Power Consumption Stand by Frequency range Video Input (2EA) S-Video Input (1EA) Component Input (2EA) RGB Input (1EA) HDMI Input (2EA) Audio Input (5EA) Audio variable out (1EA) USB Input (1EA) AV out (1EA) DivX, MP3, JPEG NTSC 2 ~ ~ ~ 125 Specification NTSC-M, PAL M/N Remark
100-240V~ / 50Hz, 60Hz Central & South America 1) Temp : 0 ~ 40 deg 2) Humidity : 10 ~ 90 %RH 1) Temp : -20 ~ 50 deg 2) Humidity : 10 ~ 90 %RH Power on (Green) Cool Warm V : 56 ~ 75 Hz NTSC, PAL M/N NTSC, PAL M/N Y/Cb/Cr, Y/Pb/Pr RGB-PC HDMI-PC HDMI-DTV PC Audio, Component (2EA), AV(2EA) L/R Input Side only 260(42) 220(32) 1W(32, 42) 40W(32, 42) When recordign the manual recording PC Input

H : 31 ~ 61 khz

5. General Module Specification
No 1. 2. Panel LCD Module Outline Dimension Pixel Pitch Pixel Format Coating Back Light 42" 32" 42" 32" 42" 32" Item Specification 42" TFT WXGA LCD 32" TFT WXGA LCD 983 x 576 x 47.3 760.0 x 450.0 x 48.0 0.227 x 0.681 x RGB 0.17025 x 0.51075 x RGB 1366 x 768 Pixels RGB strip arrangement Hard coating(3H), Anti-glare treatment of the front polarizer, 18CCFL 18CCFL mm (H)mm x (V)mm x (D)mm Remark
6. Set Optical Feature (LCD Module)
No 1. 2. 3. Item Luminance View angle (R/L, U/D) White coordinate Red Green Blue 4. 5. Contrast ratio Luminance Variation White X Y X Y X Y X Y CR -0.03 Min 400 Typ 500 178/178 0.279/0.279/0.279 +0.03 0.292/0.292/0.292 0.635/0.636/0.635 0.339/0.343/0.344 0.282/0.284/0.286 0.606/0.615/0.614 0.145/0.144/0.146 0.064/0.063/0.1000 1.3 32" 42" LPL(0-RT) LPL(0-RT) degree Max Unit Maker LPL(0RT) 32",42" LPL 32, 42 Remark - 50cm from the surface - Full White Pattern - CR > 10
7. Component Video Input (Y, PB, PR)
No 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Resolution 720*480 720*480 720*576 720*480 720*480 720*576 1280*720 1280*720 1280*720 1920*1080 1920*1080 1920*1080 1920*1080 1920*1080 H-freq(kHz) 15.73 15.75 15.625 31.47 31.50 31.25 44.96 45.00 37.50 33.72 33.75 28.125 67.5 56.25 V-freq.(kHz) 59.94 60.00 50.00 59.94 60.00 50.00 59.94 60.00 50.00 59.94 60.00 50.00 60.Pixel clock(MHz) 13.500 13.514 13.500 27.000 27.027 27.000 74.176 74.250 74.25 74.176 74.250 74.250 148.5 148.5 Remarks SDTV, DVD 480I(525I) SDTV, DVD 480I(525I) SDTV, DVD 576I(625I) SDTV 480P SDTV 480P SDTV 576P HDTV 720P HDTV 720P HDTV 720P 50Hz HDTV 1080I HDTV 1080I HDTV 1080I 50Hz, HDTV 1080P HDTV 1080P 50Hz

8. RGB Input ( PC )

No 1 2. 11 Resolution 720*400 640*480 640*480 800*600 800*600 1024*768 1024*768 1024*768 1280*768 1360*768 1366*768 H-freq(kHz) 31.469 31.469 37.500 37.879 46.875 48.363 56.476 60.023 47.776 47.712 47.700 V-freq.(kHz) 70.08 59.94 75.00 60.31 75.00 60.00 70.06 75.02 59.87 60.01 60.00 Pixel clock(MHz) 28.32 25.17 31.50 40.00 49.50 65.00 78.75 79.50 80.125 85.50 84.62 DOS VESA(VGA) VESA(VGA) VESA(SVGA) VESA(SVGA) VESA(XGA) VESA(XGA) VESA(XGA) WXGA(42XGA,50",60") WXGA(42XGA,50",60") WXGA(42XGA,50",60") Remarks

9. HDMI Input ( PC )

No 11 Resolution 720*400 640*480 640*480 800*600 800*600 1024*768 1024*768 1024*768 1280*768 1360*768 1366*768 H-freq(kHz) 31.469 31.469 37.500 37.879 46.875 48.363 56.476 60.023 47.776 47.712 47.700 V-freq.(kHz) 70.08 59.94 75.00 60.31 75.00 60.00 70.06 75.02 59.87 60.01 60.00 Pixel clock(MHz) 28.32 25.17 31.50 40.00 49.50 65.00 75.00 78.75 79.50 85.50 84.62 DOS VESA(VGA) VESA(VGA) VESA(SVGA) VESA(SVGA) VESA(XGA) VESA(XGA) VESA(XGA) WXGA(42XGA,50",60") WXGA(42XGA,50",60") WXGA(42XGA,50",60") Remarks

10. HDMI input ( DTV )

No 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Resolution 720*480 720*480 720*576 1280*720 1280*720 1280*720 1920*1080 1920*1080 1920*1080 1920*1080 1920*1080 H-freq(kHz) 31.47 31.50 31.25 44.96 45.00 37.50 33.72 33.75 28.125 67.5 56.25 V-freq.(kHz) 59.94 60.00 50.00 59.94 60.00 50.00 59.94 60.00 50.00 60.Pixel clock(MHz) 27.000 27.027 27.000 74.176 74.250 74.25 74.176 74.250 74.250 148.5 148.5 Remarks SDTV 480P SDTV 480P SDTV 576P HDTV 720P HDTV 720P HDTV 720P 50H HDTV 1080I HDTV 1080I HDTV 1080I 50Hz HDTV 1080P HDTV 1080P 50Hz

ADJUSTMENT INSTRUCTION

1. Application Range
This spec. sheet is applied to all of the LP7BB chassis (Saturn Analog DVR) manufactured at LG TV Plant all over the world.
5. HDD Assembly Adjustment method
5.1. HDD FORMAT 1) Assemble MAIN , DVR Board. 2) HDD Format in progress words will create automatically. 3) Please, wait for 30~40 seconds. 5.1.1. HDD Format in progress
2.1 Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help to protect test instruments. 2.2 Adjustment must be done in the correct sequence. 2.3 The adjustment must be performed at 255C temperature and 6510% relative humidity if there is no specified designation. 2.4 The input voltage of the receiver must be kept between 100-220V, 50/60Hz. 2.5 Before adjustment, execute Heat-Run for 30 minutes at Full White mode.(Power on key)
3. PCB assembly adjustment items
* Channel memory - Download the channel data from BOM to EEPROM by using LGIDS. * Option adjustment following BOM - Tool Option1 - Tool Option2 - Area Option

LP7BA LPL S/W Version DVR Version UTT Tool Option1 Tool Option2 Area Option : 42 Normal X.XX X.XX XX hr 16
5.1.2. HDD Format completed
(Fig.1) 1) Push the ADJ key in the Adjust Remocon. 2) Input the Option Number that was specified in the BOM, into the Shipping area. 3) Select "Tool Option1/ Tool Option2/ Area Option" by using (CH+/-) key , and press the number key(0~9) consecutively ex) If the value of Tool Option1 is 7, input the data using number key "7" (Fig. 1)
5.2. Sub Program Download for "DVR" by using USB memory stick 1) connect USB memory stick to SET 2) Set power off -> ON - DVR s/w will be installed automatically
4. SET assembly adjustment items
Auto AV Color Balance Adjustment of White Balance Auto Component Color Balance adjustment - Standard equipment : MSPG925FA Auto RGB Color Balance adjustment - Standard equipment : MSPG925FA (At DVR model Case, Please check DVR function like following list ) Checking DVR Function and HDD Check DVR Function as follow on 4.2 and find HDD failure under malfunction.

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6. EDID
Caution * Use the proper signal cable for EDID Download - Analog EDID : Pin3 exists - Digital EDID : Pin3 exists => Caution : - Never connect HDMI & DVI-D & DVI-A Cable at the same time. - Use the proper cables below for EDID Writing 6.1. Data 6.1.1 ANALOG(256 Bytes ) BLOCK1 (128BYTE)

7. ADC Calibration

ADC MSPG925FA RF/AV/S-VIDEO PAL INPUT AV3-ZF SELECT AV1-TB Model: 202 (PAL-BGDHI) Pattern: 65 Model:201 (NTSC) Pattern: 65 NTSC VIDEO1 -MA Component Model:217 720P Pattern:65 * 100% Color Bar RGB Model: 60 1024*768 60Hz Pattern: 65 * 100% Color Bar
* 100% Color Bar * 100% Color Bar
=> Caution : - System control RS-232 Host should be "PC" for adjustment. Press the FRONT-AV KEY on R/C for converting input mode. (change RS-232 Host : pc, Band Rate : 115200bps) 7.1 Adjustment of RF/AV/S-VIDEO * Required Equipments - Remote controller for adjustment - 802F Pattern Generator, Master (MSPG-925FA), etc. - MSPG-925FA Pattern Generator (Which has Video Signal: 100% Color Bar Pattern shown in Fig. 2) => Model: 202 / Pattern : 65

6.1.2 HDMI(256 Bytes ) BLOCK1 (128BYTE)
BLOCK2 (128BYTE) (Fig. 2) 7.1.1 Method of Auto RF/AV/S-VIDEO Color Balance. 1) Press the FRONT-AV KEY on R/C for converting input mode. 2) Input the Video Signal: 100% Color Bar signal into AV 3) Set the PSM to Dynamic mode in the Picture menu. 4) Press INSTART key on R/C for adjustment. 5) Press the (Vol. +) key to operate the set, then it becomes automatically 6) Auto-RGB OK means the adjustment is completed 7.1.2 Requirement - This AV color balance adjustment should be performed before White Balance Adjustment. - After AV color balance adjustment, Change the mode from AV to RF. (Cancel Heat-run mode.)

- 11 -

7.2 Adjustment of Component. * Required Equipments - Remote controller for adjustment - 802F Pattern Generator, Master (MSPG-925FA), etc - MSPG-925FA Pattern Generator (Which has 720p@60Hz YPbPr signal : 100% Color Bar Pattern shown in Fig. 3 ) => Model: 217 / Pattern: 65 - It is very import to use correct adjustment pattern like Fig.3. a. Within the pattern, color sequence should be aligned : White-Yellow-Cyan-Green-Magenta-Red-BLUEBLACK (If color sequence is reversed (Black -> -> White), reverse the pattern with REV key, when using Master pattern generator like MSPG-925) b. If Minimum Black Level and/or Maximum White Level is not correct, Do select 100% Color Bar Pattern.
7.3 Adjustment of RGB * Required Equipments - Remote controller for adjustment - 802F Pattern Generator, Master (MSPG-925FA), etc - MSPG-925FA Pattern Generator (Which has XGA [1024*768] 60Hz PC Format output signal : 100% Color Bar Pattern shown in Fig. 4 ) - It is very import to use correct adjustment pattern like Fig. 4. a. Within the pattern, color sequence should be aligned : White-Yellow-Cyan-Green-Magenta-Red-BLUEBLACK (If color sequence is reversed (Black -> -> White), reverse the pattern with REV key, when using Master pattern generator like MSPG-925) b. If Minimum Black Level and/or Maximum White Level is not correct, Do select 100% Color Bar Pattern
(Fig. 4) (Fig. 3) 7.2.1 Method of Auto Component Color Balance 1) Input the Component 720p 100% Color Bar(MSPG925FA model:217, pattern:65) signal into Component. (MH : component 1 ) 2) Set the PSM to Dynamic mode in the Picture menu 3) Press the INSTART key on R/C for adjustment 4) Press the (Vol. +) key to operate the set, then it becomes automatically 5) Auto-RGB OK means the adjustment is completed 7.3.1 Method of Auto RGB Color Balance 1) Input the PC 1024x768 @ 60Hz with 100% color bar pattern like Fig.4. into RGB. (Ex. MSPG-925FA, model:60, pattern:65) 2) Set the PSM to Dynamic mode in Picture menu 3) Press the INSTART key on R/C for adjustment 4) Press the (Vol. +) key operate To set , then it becomes automatically 5) Auto-RGB OK means adjustment is completed

- 12 -

8. White Balance
* Caution : Before White-balance, the AV ADC should be done. => Notice - Do the white balance adjustment under the 10LUX - Before white balance, press the In-start key 2times and do the reset like Fig.5 - Use the Torino inner pattern(216 gray pattern) - To enter White-balance mode,press the IN-START key 2times. * Caution : - System control RS-232 Host should be "PC" for adjustment.
White Balance(Hex) Color Temp. Red Gain. Green Gain. Blue Gain. Red Offset Green Offset Blue Offset Reset Cool _ To set
(Fig. 4) * Test Equipment LCD : Color Analyzer ( CA-110), PDP : Color Analyzer (CA100) CA-210 : The both of LCD and PDP are available. PC (for communication through RS-232C) -> UART Baud rate : 115200 Pattern Generator (MSPG-925FA etc. ) * Color Temperature & Color Coordinates Setting When adjusting the Color Temperature of LCD, Color AnalyzerCA-210(Matrix should be corrected through CH9 of CS-1000) should be used. When adjusting the Color Temperature of PDP, Color AnalyzerCA-210(Matrix should be corrected through CH10 of CS-1000) should be used. Adjust the Color Temperature based below adjustment color coordinates. Even if CH9 of CA-210 is corrected with Matrix, there may be many character of Module and Filter. Therefore Refer to the below Color Coordinates Target. But, in case of WCG module, use the CH12 of CA-210.

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TROUBLESHOOTING

1. No power

Symptom

1) Minute

discharg e doesnt occur at module.
2) Front LED does nt come into ac tion.

Start check

Is inserted a pl ug in power cord? Plug in a power cord YE S NO Connect a cable. Plasma (EL1 1), LC D(SC100 )
Is connected the Line Filter and PSU? YE S
- 14 NO Replace the fuse YE S NO Connect the 13pin cable. YE S
Is normal the fuse of PSU? Plasma (F101), LCD(F111 )
Is it connected tha t PSU and 13 pin cable in VSC board ?
After re mo ve all cab les con nec ted to PSU (except the C N101) , author izes the AC vo ltage marking on manual. W hen ST -b y 5V doesnt operate , replace PSU

2. Protection mode

it doesnt discharge minutely from module.

1) After once shining,

2) The relay fall s. ( The sound is audible "Click ")
3) It is converted w ith the c o lor where the front LED is red fro m gr een.
Is the PSU no rmal? NO Replace the power board YE S NO After connecting we ll each connector the normality it operates? Replace the power board
Is output the no rmality Lo w/High Voltage except Stand-by 5V?
Is the each connector norma l? YE S NO Is no rmal the fuse (FS2 ,FS3 ) on Y-B/D? NO YE S
- 15 YE S NO YE S YE S Is no rmal the fuse (FS1 ,FS2 ) on Z-B/D? NO NO Is normal the output vo ltage after re move P100,110,200, 210 connector of X- B/D?
Is t he Y- Board no rmal ?
Is no rmal the output voltage after remove P1 connector of Y-B/D?

Replace Y-B/D

Replace the fuse
Is the Z - Board no rmal ?
Is no rmal the output vo ltage after remove P1 connector of Z-B/D? Replace the fuse

Replace Z -B/D

Is t he X- Board no rmal ?
After remove P100,110 output voltage normality: Re place Ri ght X-B/ D Afte r re mo ve P200,210 output voltage normality: Replace Left X- B/D

3. No Raster

Sy mptom the front LED is green
1) No OSD and image occur at screen.
2) It maintains the condition where
Does minute discharge at Module? NO NO YE S YE S Check the PDP/LCD Module
Is the inverter/ VaV s on?
Is output the normality Lo w/High Voltage except Stand-by 5V?

Replace the power board

- 16 NO Reconnect the link cable in P600 YE S NO Replace the VSC
Is the link cable normal?
Is the IC700s output normal?
4. In case of becomes unusual display from RF mode(Main)
NO Is the Tuner Cable connected well? Is normal the Input voltage ? (Check Pin8, Pin6) YE S YES Is normal the I2C communication ? (Check Pin5, Pin4)
Is normal video output of the Tuner? (Check TU200_Pin14) NO NO NO
YE S Cable inserts well. Check the power Change the Tuner
Is normal the Input voltage ? (Check L308) YE S Is normal the I2C communication ? (Check R309, R310) NO NO
Is normal video NO output of CXA2069Q? (Check R324, In case of S-Video check R324, R328)
- 17 Check the power ( Check L1004) NO Cable inserts well

Change the IC(IC300)

Is the LVDS Cable connected well?

Change the IC(IC700)

5. In the case of becomes unusual display from rear AV mode(main)
Is normal video input of the A/V jack? Check the input source

Same as Block A

6. In the case of becomes unusual display from rear S-Video mode(main)

Check the input source

Is normal video input of the A/V jack?

- 18 NO

7. In the case of becomes unusual display from side AV mode(main)
8. In the case of becomes unusual display from side S-Video mode(main)

Is normal video input of the A/V jack? (Check R339, R341, L310)

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13. In case of becomes unusual display from RF mode(Sub)
Is the Tuner Cable connected well? (Check Pin5, Pin4)
Is normal video output of the Tuner? (Check TU201_Pin14)
Is normal the Input voltage ? (Check Pin8, Pin6)
YES Is normal the I2C communication ?
Cable inserts well. Check the power ( L1103)

Change the Tuner

Is normal the Input voltage ? (Check L308)
Is normal video output of CXA2069Q? YES (Check R312, In case of S-Video check R312, R314)
Is normal the I2C communication ? (Check R309, R310)
Check the power ( Check L1004)

- 20 NO

Cable inserts well
14. In case PIP doesnt display from other modes(Sub)
Same as the case of main exc ept block A should be change to B
15. In case of becomes unusual display from component1 mode(main/sub)
Is normal video input of the JK102? (Check L126, L127, L128)

Change IC(IC700)

16. In case of becomes unusual display from component 2 mode(main/sub)
Is normal video input of the JK103? (Check L129, L130, L131)

- 21 NO

17. In case of becomes unusual display from RGB mode(main/sub)
Is normal R, G, B input and H,V sync of the JK500? (Check R509, R511, R512 R513, R515)

18. No Sound

LED is Green
Sc reen i s ex istent, but sound isnt

Ch eck f ollow

All input (mode) is no sound? NO YES NO
Is the speaker on in menu?

Set on speaker in menu

Only HDMI is no Sound? Download the EDID data NO YES
Is the speaker cable normal?

Check the Speaker cable

Only AV input is no Sound? Replace IC300 NO NO YES
Is the output of IC300(pin52,53) normal?
IC400 operate normally? YES

Replace IC400 NO

- 22 Check the signal after IC300 refer to circuit diagram Check the Tuner In/Out NO

IC401 operate normally? YES

Replace IC401 NO

Only RF is no Sound?
IC402 operate normally? YES

Replace IC402 NO

Replace VSC B/D

19. HDMI mode

Yes Down load EDID data each port.

Is normal on ly video ?

No Yes
Is normal on ly audio? No
Check TMDS line wave. (R1215 ~ R1222/ R1226 ~ R1233)
1. Check TV input mode. (HDMI1 port support HDMI and DVI. So if you inpu t D VI signal and PC audio from phone jac k, You can hear PC audio. ) 2. Unplug and plug HDMI ca ble. (sometimes ESD surge occurred at HDMI port.) 3. Check HDMI Mute re gister. (0x 68, offset 0x 37) 4. Check Audio- ou t channe l mute reg ister (0x68 , offse t 0x32) is appropriately enabled.

Is wave continuous?

Check HDMI source. Change another so urce or cab le.
- 23 Yes Normal video , Normal aud io? No Replace IC1200
1. Check H DMI rece ivers status register. ( 0x60, offset 0x06) - If the value is 0xf or 0x 8, it is normal.
2. Check HDCP reg iste r. (0 x60, offset 0x32 ) - Enabl e bit 6: HDCP key loaded - Enable bit 5: HDCP decryption active - Enable bit 4: HDCP authen. attempted
Reset TMDS power down /on register. - 0x60, of fse t 0x 3f : 0xf 7 => 0xff

20.1 DVR

Sympto m

L ED is Green

Doesnt work timeshift m ode.
Cant enter to recorded list
Cant record AV/RF/Component
Is Timeshift Mode "On" in Menu?
NO Change Timeshift Mode from off to "On"
YE S NO Connect a cable. P1300, P1302
Is connected cable? (P1300, P1302 )
- 24 NO Replace the IC1300, IC1302 NO Replace the IC1500, IC1501 YE S Change HDD
Is operated IC 1300,IC1302 normally?
Is operated IC1500, IC1501 normally?

BLOCK DIAGRAM

- 25 -

EXPLODED VIEW

300 531

200 590

120 210

280 230

900 400

- 26 -

P/NO : MFL39106202
Aug., 2007 Printed in Korea