FUNAI EMERSON LE220EM3 Service Manual

22” lcd tv

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22" LCD TV

SERVICE MANUAL

LE220EM3

EMERSON

22ME402V/F7

MAGNAVOX

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Information in this document is subject to change without notice. Funai reserves the right to change the content

herein without the obligation to notify any person or organization of such changes.

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chassis FL12.1

Contents

(Serial No.: ME1)

120208

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Page 1 Funai. Furthermore, any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited. Information in this document is subject to change without notice. Funai reserves the right to change the content herein without the obligation to notify any person or organization of such changes.
Page 2 It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Funai could not possibly know, evaluate and advice the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way.
Page 3: Table Of Contents
TABLE OF CONTENTS Specifications ................1-1 Important Safety Precautions .
Page 4: Specifications
SPECIFICATIONS < TUNER / NTSC > ANT. Input ---------------------- 75 Ω Unbal., F type Description Condition Unit Nominal Limit 1. AFT Pull-In Range ±2.3 ±2.1 TV.ch.4 dBµ 2. Synchronizing Sens. CA.ch.31 dBµ CA.ch.87 dBµ < TUNER / ATSC > Description Condition Unit Nominal...
Page 5: Important Safety Precautions
IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
Page 6 3. Design Alteration Warning - Do not alter or add 7. Product Safety Notice - Some electrical and to the mechanical or electrical design of this TV mechanical parts have special safety-related receiver. Design alterations and additions, characteristics which are often not evident from including, but not limited to circuit modifications visual inspection, nor can the protection they give and the addition of items such as auxiliary audio...
Page 7 Precautions during Servicing A. Parts identified by the # symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements.
Page 8 Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1.
Page 9: Standard Notes For Servicing
STANDARD NOTES FOR SERVICING Circuit Board Indications How to Remove / Install Flat Pack-IC 1. The output pin of the 3 pin Regulator ICs is 1. Removal indicated as shown. With Hot-Air Flat Pack-IC Desoldering Machine: Top View 1. Prepare the hot-air flat pack-IC desoldering Bottom View machine, then apply hot air to the Flat Pack-IC Input...
Page 10 3. The flat pack-IC on the CBA is affixed with glue, so With Soldering Iron: be careful not to break or damage the foil of each 1. Using desoldering braid, remove the solder from pin or the solder lands under the IC when all pins of the flat pack-IC.
Page 11 2. Installation With Iron Wire: 1. Using desoldering braid, remove the solder from 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder the foil of each pin of the flat pack-IC on the CBA flux which is applied to all pins of the flat pack-IC, so you can install a replacement flat pack-IC more you can remove it easily.
Page 12 Instructions for Handling Semi- conductors Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1 MΩ) that is properly grounded to remove any static electricity that may be charged on the body.
Page 13: Cabinet Disassembly Instructions
CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart Step/ Fig. Loc. Part Removal Note This flowchart indicates the disassembly steps for the cabinet parts and the CBA in order to gain access to Front items to be serviced. When reassembling, follow the [11] D4 --------------- Cabinet...
Page 14 2. When you disassemble/re-assemble the 3. Performance Test after reassembling the LCD Function CBA on the Front Cabinet Panel Assembly • Detach the Function CBA, which is attached on the • After you swap any of the Front Cabinet, Rear Frame Front Cabinet with double-sided tape, without or Function CBA, you need to make sure that there breaking it.
Page 15 Jack Holder [4] Digital Main CBA Unit (S-5) (S-4) (S-5) [3] Power Supply CBA (S-4) (S-4) Fig. D2 FL12.1_DC...
Page 16 [8] LCD Panel Assembly [6] Stand Holder (S-7) (S-6) (S-7) Double-sided tape [5] Speaker Sensor Lens [7] Function CBA Fig. D3 : Make sure to read all the precautions on page 4-1, 4-2 when you disassemble/re-assemble the LCD Panel Assembly. FL12.1_DC...
Page 17 [10] LCD Module Reflection Sheet Cable Sheet Holder (S-8) FFC Cable (S-8) (S-8) LED Heat Sink Assembly (S-8) [11] Front Cabinet (S-8) (S-8) Sheet Holder (S-9) [9] Rear Frame (S-8) Fig. D4 : Make sure to read all the precautions on page 4-1, 4-2 when you disassemble/re-assemble the LCD Panel Assembly.
Page 18 TV Cable Wiring Diagram To LCD Panel To LCD Panel Assembly Assembly Digital Main Power Supply CBA CBA Unit CN1001 CN3011 CN631 CN3701 CN601 CN3801 CN3101 To Speaker To AC Cord Function CBA CN4001 Fig. D5 FL12.1_DC...
Page 19: Electrical Adjustment Instructions
ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: “CBA” is abbreviation for 1. Purity Check Mode “Circuit Board Assembly.” This mode cycles through full-screen displays of red, Note: Electrical adjustments are required after green, blue, and white to check for non-active pixels. replacing circuit components and certain 1.
Page 20 The White Balance Adjustment should be 6. Press [MENU] button. The internal Raster signal appears in the screen. (“Internal (Single)” appears performed when replacing the LCD Panel in the upper right of the screen as shown below.) or Digital Main CBA. 2.
Page 21: How To Initialize The Lcd Tv
HOW TO INITIALIZE THE LCD TV The purpose of initialization is to place the set in a new out of box condition. The customer will be prompted to select a language and program channels after the set has been initialized. To put the program back at the factory-default, initialize the LCD TV using the following procedure.
Page 22: Firmware Renewal Mode
FIRMWARE RENEWAL MODE Equipment Required a. USB storage device b. Remote Control Unit Firmware Update Procedure User Upgrade (Filename example: TVNB012_00_UF_XX91_AA.ecc) Upgrade the firmware only. The setting values will not be initialized. The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_”...
Page 23 Factory Upgrade (Firmware Upgrade/Flash Upgrade) Firmware Upgrade (Filename example: FACT_TVNB012_00_UF_XX91_AA.ecc) Upgrade the firmware and initialize the setting values. The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_” at the beginning of the filename. If you want to upgrade the firmware only and leave the setting values as they are, eliminate the “FACT_”...
Page 24: Troubleshooting
TROUBLESHOOTING [Power Supply Section] FLOW CHART NO.1 The power cannot be turned on. Is the fuse (F601) normal? See FLOW CHART No.2 <The fuse blows out.> Check if there is any leak or short-circuiting on the primary circuit component, and service it if defective. (D601, D602, D603, D604, Q601, Q602, T601) Is the P-ON+21V line voltage normal? FLOW CHART NO.2...
Page 25 FLOW CHART NO.5 P-ON+21V is not output. Check D650, C651, C652 and their periphery circuit, and service it if defective. FLOW CHART NO.6 AMP+13V is not output. FLOW CHART NO.7 AL+3.3V is not output. FL12.0ATR...
Page 26 [Video Signal Section] FLOW CHART NO.1 The key operation is not functioning. Is approximately +3.3V voltage supplied to Pin(1) of CN4001? Replace Digital Main CBA Unit. Replace IC4001 Check AL+3.3V line and or Function CBA. service it if defective. FLOW CHART NO.2 No operation is possible from the remote control unit.
Page 27 [Audio Signal Section] FLOW CHART NO.1 Audio is not outputted normally. See FLOW CHART NO.5 <P-ON+21V is not output. [Power Supply Section]> See FLOW CHART NO.6 <AMP+13V is not output. [Power Supply Section]> See FLOW CHART NO.7 <AL+3.3V is not output. [Power Supply Section]>...
Page 28: Block Diagrams
BLOCK DIAGRAMS 1. System Control Block Diagram FL12.1BLS...
Page 29 2. Video/Audio Block Diagram FL12.1BLVA...
Page 30 3. Digital Signal Process Block Diagram FL12.1BLD...
Page 31 4. LED Backlight Drive Block Diagram FL12.1BLBD...
Page 32 5. Power Supply Block Diagram FL12.1BLP...
Page 33: Schematic Diagrams / Cba And Test Points
SCHEMATIC DIAGRAMS / CBA AND TEST POINTS Standard Notes WARNING Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc.
Page 34 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE_A,_V FUSE. ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE_A,_V. 2.
Page 35 Power Supply Schematic Diagram CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. NOTE: CAUTION ! : For continued protection against risk of fire, If Main Fuse (F601) is blown , check to see that all components in the power supply The voltage for parts in hot circuit is measured using replace only with same type 4A, 125V fuse.
Page 36 Function Schematic Diagram C4054 R4052 R4063 TO DIGITAL MAIN 6.8K R4061 CN4001 CBA UNIT CN3101 OPEN R4062 1 AL+3.3V OPEN 2 P-ON+5V 3 LIGHT RS4051 GP1USC32XP 4 LED1 D4051 (REMOTE SENSOR) R4055 R4059 19-21SURC OPEN OPEN 5 REMOTE POWER IC4051 6 KEY-IN1 OPEN 7 GND...
Page 37 Digital Main 1 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into five and shown as IC3005 (1/5) ~ IC3005 (5/5) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT CONTINUE D3008...
Page 38 Digital Main 2 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into five and shown as IC3005 (1/5) ~ IC3005 (5/5) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT TU3901 TUNER UNIT TU3902 OPEN...
Page 39 Digital Main 3 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into five and shown as IC3005 (1/5) ~ IC3005 (5/5) in this Digital Main Schematic Diagram Section. C3009 IC3005(3/5) OPEN...
Page 40 Digital Main 4 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into five and shown as IC3005 (1/5) ~ IC3005 (5/5) in this Digital Main Schematic Diagram Section. R3218 OPEN CONTINUE...
Page 41 Digital Main 5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into five and shown as IC3005 (1/5) ~ IC3005 (5/5) in this Digital Main Schematic Diagram Section. CONTINUE DIGITAL 4 CHECK+1.8V...
Page 42 Power Supply CBA Top View Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used when repairing. Also, in order to have the ability to increase the input slowly, CAUTION ! when troubleshooting this type of power supply circuit, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
Page 43 Power Supply CBA Bottom View Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used when repairing. Also, in order to have the ability to increase the input slowly, CAUTION ! when troubleshooting this type of power supply circuit, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
Page 44 Function CBA Top View C4002 R4021 C4052 R4002 R4022 R4053 TP4057 TP4061 TP4062 R4004 IC4001 C4053 R4006 TP4058 TP4054 CN4001 R4062 R4018 TP4055 R4011 TP4059 C4001 TP4056 R4007 TP4060 D4004 R4012 C4056 R4054 D4003 BA21N0G0203 2 D4001 NO.9 R4009 A30C5 C7A3 C4055 R4014...
Page 45: Wiring Diagram
WIRING DIAGRAM 11-1 FL12.1WI...
Page 46: Exploded Views
EXPLODED VIEWS LCD1 CL3006 LCD Module CL1001 Digital Main CBA Unit CL3701 CL3801 CL3101 Power Supply CBA Function CBA AC601 SP3802 SP3801 Stand Assembly See Electrical Parts List for parts with this mark. SSK1 12-1 FL12.0-A_CEX...
Page 47 Packing Upper Side Lower Side Stand Assembly Tape SSK1 Packing Tape Fixlon Tape Packing Tape Attach to rear cover. S I D Packing Tape Some Ref. Numbers are not in sequence. 12-2 FL12.1_PEX...
Page 48: Parts Matrix
PARTS MATRIX PRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. NOTE: Parts that are not assigned part numbers (---------) are not available.
Page 49 Chassis FL12.1 Electrical Parts List Ref. No. Description Parts No. DIGITAL MAIN CBA UNIT A2171MMA-001 DIGITAL MAIN CBA UNIT A2170MMA-001 POWER SUPPLY CBA A21N0MPW-001 IC601# IC PHOTOCOUPLER TLP781F(D4-FUNBLL F) QPEL781FBLLF IC1001# IC LED BACKLIGHT CONTROLLER HA7209PC /SOP /24PIN NSCA0T00H003 FUNCTION CBA A21N0MSW-001 IC4001 IC TOUCH SENSOR MICON CY8C20336A-24LQXIT...
Page 50 LE220EM3(A2171UT)(Serial No.: ME1) LE220EM3(A2171UT)(Serial No.: ME1) 20120105 C608 CHIP CERAMIC CAP.(1608) B K 0.047UF/50V CHD1JK30B473 LE220EM3(A2171UT)(Serial No.: ME1) C609! CHIP CER. BK 0.082UF/50V CHD1JK30B823 C610 CHIP CERAMIC CAP.(1608) B K 1000PF/50V CHD1JK30B102 Ref. No. Description Parts No. C650 CAP CERAMIC HV 1500PF 1KV B K CA3A152TE006 MECHANICAL PARTS C651...
Page 51 LE220EM3(A2171UT)(Serial No.: ME1) LE220EM3(A2171UT)(Serial No.: ME1) Q652 CHIP TRANSISTOR KTC3875S-Y-RTK/P NQ1YKTC3875S R1016 RES CHIP 1608 1/10W J 10K OHM RRXA103HH013 Q653 CHIP TRANSISTOR KTC3875S-Y-RTK/P NQ1YKTC3875S R1017 RES CHIP 1608 1/10W J 100K OHM RRXA104HH013 Q656 TRANSISTOR 2SC2120-Y(TE2 F T) QQSY2SC2120F R1019 RES CHIP 1608 1/10W 0 OHM RRXA000HH014...
Page 52 22ME402V/F7(A2170UT)(Serial No.: ME1) 20120114 22ME402V/F7(A2170UT)(Serial No.: ME1) Different parts from the original model LE220EM3(ME1) Parts No. Ref. No. Description MECHANICAL PARTS STAND ASSEMBLY A21N0UT 1ESA31177 A18! RATING LABEL A2170UT ---------- LOGO LABEL A21N0UT ---------- ENERGY GUIDE LABEL A2170UT ---------- CARTON A2170UT 1EM332857 OWNERS MANUAL A21N0UT 1EMN29145...
Page 53: Revision History
REVISION HISTORY Chassis FL12.1 • 2012/02/01 LE220EM3 (Serial No.: ME1) First Draft Added • 2012/02/08 22ME402V/F7 (Serial No.: ME1) First Draft Added 15-1 FL12.1REV...
Page 54: Comparison List Of Model Names
COMPARISON LIST OF MODEL NAMES Chassis FL12.1 LE220EM3 (ME1) A2171UT 22ME402V/F7 (ME1) A2170UT 16-1 FL12.1COM...

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FUNAI EMERSON LE220EM3 Service Manual

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