Related Manuals for Emerson LC195EM82
Summary of Contents for Emerson LC195EM82
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Page 1: Service Manual
EMERSON AND THE G-CLEF LOGO ARE REGISTERED TRADEMARKS OF EMERSON RADIO CORP., PARSIPPANY, NEW JERSEY, U.S.A. SERVICE MANUAL 19″ COLOR LCD TELEVISION LC195EM82/LC195EM87... -
Page 2: Table Of Contents
IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommended by Funai and described in this service manual are effective methods of performing service operations. Some of these service special tools should be used when and as recommended. -
Page 3: Specifications
SPECIFICATIONS < TUNER / NTSC > ANT. Input ---------------------- 75 ohm Unbal., F type Description Condition Unit Nominal Limit 1. AFT Pull-In Range ±2.3 ±2.1 TV.ch.4 dBµ 2. Syncronizing Sens. CA.ch.31 dBµ CA.ch.87 dBµ < TUNER / ATSC > Description Condition Unit Nominal... - Page 4 < AUDIO > All items are measured across 8 Ω load at speaker output terminal with L.P.F. / Video1 Input. Description Condition Unit Nominal Limit 1. Audio Output Power 10% THD: Lch/Rch 1.0/1.0 0.9/0.9 2. Audio Distortion 500mW: Lch/Rch 0.5/0.5 2.0/2.0 -6dB: Lch 100 to 11 k...
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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.
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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 Bottom View 1. - 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.
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Page 13: Cabinet Disassembly Instructions
CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart Removal Step/ This flowchart indicates the disassembly steps for the Remove/*Unhook/ Loc. Part Fig. Unlock/Release/ cabinet parts, and the CBA in order to gain access to Note Unplug/Unclamp/ item(s) to be serviced. When reassembling, follow the Desolder steps in reverse order. - Page 14 [4] Rear Cabinet (S-4) (S-4) (S-4) (S-4) (S-1) (S-4) [3] Stand Cover [2] Stand Hinge [1] Stand Base (S-3) (S-2) (S-3) Fig. D1 A81N0DC...
- Page 15 [15] Front Cabinet (S-11) [14] Speaker [13] LCD Module (S-12) (S-11) [9] Digital Main CBA Unit (S-11) (S-11) (S-8) (S-6) (S-12) (S-10) (S-8) [14] Speaker (S-9) [8] Jack Holder [7] IR Sensor (S-11) (S-9) (S-5) (S-11) (S-7) (S-9) Module PCB [6] Function CBA Holder (S-9)
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Page 16: Wiring Diagram
TV Cable Wiring Diagram To LCD Module Digital Main Main CBA CBA Unit CN1901 CN1902 CN701 CN1501 CN1502 CN1503 CN1504 To LCD CN401 Module CN702 CN703 CN704 CN402 CN801A Speaker CN705 CN61 CN706 AC CORD CN802A CN1152 CN1102 CN102 CN101 To Speaker Junction CBA WH1101B... -
Page 17: Electrical Adjustment Instructions
ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: “CBA” is abbreviation for How to set up the service mode: “Circuit Board Assembly.” Service mode: Note: Electrical adjustments are required after 1. Use the service remote control unit. replacing circuit components and certain mechanical parts. It is important to perform 2. -
Page 18: White Balance Adjustment
2. Auto Calibration [Component] The following adjustment normally are not attempted in the field. Only when replacing the LCD Panel then adjust Purpose: To bring the color adjustment of each as a preparation. component into standard alignment. 4. White Balance Adjustment Symptom of Misadjustment: If this adjustment is [Video] incorrect, component signals do not reproduce the... - Page 19 5. [CUTOFF] 2. Input the White Purity. Press [1] button to select “COR” for Red Cutoff adjustment. Press [3] button to select “COB” for INPUT SIGNAL Blue Cutoff adjustment. [DRIVE] Press [4] button to select “DR” for Red Drive adjustment. Press [6] button to select “DB” for Blue Drive adjustment.
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Page 20: How To Initialize The Lcd Television
HOW TO INITIALIZE THE LCD TELEVISION How to initialize the LCD television: 1. Turn the power on. 2. To enter the service mode, press the service button on the service remote control unit. (Refer to page 5-1.) - To cancel the service mode, press [POWER] button on the service remote control unit. -
Page 21: Block Diagrams
BLOCK DIAGRAMS System Control Block Diagram A81N0BLS... - Page 22 IF/Video Block Diagram A81N0BLIF...
- Page 23 Audio Block Diagram A81N0BLA...
- Page 24 DTV Module Block Diagram A81N0BLDTV...
- Page 25 LCD Block Diagram A81N0BLLCD...
- Page 26 Power Supply Block Diagram A81N0BLP...
- Page 27 LCD Backlight Block Diagram A81N0BLLB...
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Page 28: Schematic Diagrams / Cba's And Test Points
SCHEMATIC DIAGRAMS / CBA’S 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 29 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 30 Main 1/5 Schematic Diagram VOLTAGE CHART CN61 Pin No. Voltage VOLTAGE CHART CN704 Pin No. Voltage A81N0SCM1...
- Page 31 Main 2/5 Schematic Diagram VOLTAGE CHART CN702 Pin No. Voltage A81N0SCM2...
- Page 32 Main 3/5 Schematic Diagram VOLTAGE CHART CN703 Pin No. Voltage A81N0SCM3...
- Page 33 Main 4/5 Schematic Diagram A81N0SCM4...
- Page 34 Mark CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. LC195EM82 If Main Fuse (F601) is blown , check to see that all components in the power supply CAUTION ! : For continued protection against risk of fire,...
- Page 35 Function & Junction Schematic Diagram A81N0SCF...
- Page 36 IR Sensor & Junction Schematic Diagram A81N0SCIR...
- Page 37 DTV Module 1/2 Schematic Diagram 8-10 A81N0SCD1...
- Page 38 DTV Module 2/2 Schematic Diagram 8-11 A81N0SCD2...
- Page 39 Digital Main 1/5 Schematic Diagram 8-12 A81N0SCDM1...
- Page 40 Digital Main 2/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1201. IC1201 is divided into four and shown as IC1201 (1/4) ~ IC1201 (4/4) in this Digital Main Schematic Diagram Section. A81N0SCDM2 8-13...
- Page 41 Digital Main 3/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1201. IC1201 is divided into four and shown as IC1201 (1/4) ~ IC1201 (4/4) in this Digital Main Schematic Diagram Section. A81N0SCDM3 8-14...
- Page 42 Digital Main 4/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1201. IC1201 is divided into four and shown as IC1201 (1/4) ~ IC1201 (4/4) in this Digital Main Schematic Diagram Section. 8-15 A81N0SCDM4...
- Page 43 Digital Main 5/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1201. IC1201 is divided into four and shown as IC1201 (1/4) ~ IC1201 (4/4) in this Digital Main Schematic Diagram Section. A81N0SCDM5 8-16...
- Page 44 Main CBA Top View CAUTION ! Because a hot chassis ground is present in the power CAUTION ! : For continued protection against risk of fire, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. supply circuit, an isolation transformer must be used.
- Page 45 Main CBA Bottom View CAUTION ! Because a hot chassis ground is present in the power CAUTION ! : For continued protection against risk of fire, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. supply circuit, an isolation transformer must be used.
- Page 46 IR Sensor CBA Function CBA Top View IR Sensor CBA Top View Bottom View BA81N0F01022-5 Function CBA Bottom View Junction CBA Junction CBA Top View Bottom View BA81N0F01022-2 BA81N0F01022-3 8-19...
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Page 47: Waveforms
WAVEFORMS WF1 ~ WF7 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) Pin 6 of CN703 Pin 15 of CN703 CVBS 0.2V 20µs COMP-Pb 0.2V 20µs Pin 10 of CN703 Pin 14 of CN703 20µs... -
Page 48: Wiring Diagram
WIRING DIAGRAM 10-1 A81N0WI... -
Page 49: Exploded Views
EXPLODED VIEWS Cabinet CL1902 SP802 CL1901 Digital Main CBA Unit CLN802 LCD1 SP801 CLN801 IR Sensor CBA Function CBA See Electrical Parts List Main CBA for parts with this mark. DTV Module CBA Unit Junction CBA AC601 11-1 A81N0CEX... - Page 50 Packing Stand Assembly Some Ref. Numbers are not in sequence. Tape Packing Tape Tape Packing Tape Packing Tape Packing Tape Packing Tape 11-2 A81N0PEX...
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Page 51: Mechanical Parts List
XB0M451MS002 SCREW BAG A81N0UH 1EM424596 NOTE: Parts that are not assigned part numbers (---------) are not available. Comparison Chart of Models and Marks Model Mark LC195EM82 LC195EM87 Ref. No. Mark Description Part No. FRONT CABINET A81N0UH 1EM021786 CONTROL PLATE A81H0UH... -
Page 52: Electrical Parts List
CHIP CERAMIC CAP .(1608) F Z 0.1µF/ CHD1EZ30F104 Model Mark CHIP CERAMIC CAP .(1608) CH J 47pF/ CHD1JJ3CH470 LC195EM82 CHIP CERAMIC CAP .(1608) CH J 47pF/ CHD1JJ3CH470 LC195EM87 CHIP CERAMIC CAP . F Z 1µF/10V CHD1AZ30F105 DTV MODULE CBA UNIT CHIP CERAMIC CAP . - Page 53 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. C419 CHIP CERAMIC CAP . B K 0.68µF/10V CHD1AK30B684 C855 CHIP CERAMIC CAP .(1608) B K 0.1µF/ CHD1JK30B104 C420 TF CAP . 0.56µF/50V CT1J564MS045 C856 CHIP CERAMIC CAP .(1608) B K 0.33µF/ CHD1AK30B334 C501 ELECTROLYTIC CAP .
- Page 54 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. C940 CAP POLYESTER FILM 0.22µF 50V J CA1J224SER04 D609 ZENER DIODE MTZJT-775.6B QDTB0MTZJ5R6 C942 ELECTROLYTIC CAP . 220µF/16V M CE1CMASDL221 D611# ZENER DIODE MTZJT-7722B QDTB00MTZJ22 CONNECTORS D612 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 D613 SWITCHING DIODE 1SS133(T-77)
- Page 55 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. IC913 IC SHUNT REGULATOR KIA431-AT/P NSZBA0TJY036 Q935 NPN TRANSISTOR POWER 2SC4881F QQWZ2SC4881F HFE MAX320 COILS RESISTORS PCB JUMPER D0.6-P5.0 JW5.0T CHIP RES.(1608) 1/10W 0 Ω RRXAZR5Z0000 INDUCTOR 100µH-J-26T LLAXJATTU101 CHIP RES.(1608) 1/10W 0 Ω...
- Page 56 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CARBON RES. 1/4W J 4.7k Ω CHIP RES. 1/10W J 10k Ω R437 RCX4JATZ0472 R732 RRXAJR5Z0103 CHIP RES. 1/10W J 560 Ω CHIP RES. 1/10W J 560 Ω R438 RRXAJR5Z0561 R733...
- Page 57 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CHIP RES. 1/10W J 5.6k Ω CARBON RES. 1/4W J 1k Ω R882 RRXAJR5Z0562 R971 RCX4JATZ0102 CHIP RES. 1/10W J 5.6k Ω CARBON RES. 1/4W J 22 Ω R883 RRXAJR5Z0562 R974...
- Page 58 IR SENSOR CBA Ref. No. Mark Description Part No. JK701 Y/C JACK YKF51-5646N JYEJ040JC001 Ref. No. Mark Description Part No. JK702 JACK RCA PCB S AV-4B-70HH JXRJ010SNJ06 IR SENSOR CBA ---------- JK703 RCA JACK AV-4B-54H YELLOW JXRJ010SNJ01 Consists of the following: JK704 RCA JACK WHITE AV-4B-58H WHITE JXRJ010SNJ04...
- Page 59 Misuse of any trademarks or any other content in this manual is strictly prohibited. Funai shall aggressively enforce its intellectual property rights to the fullest extent of the law. LC195EM82/LC195EM87 A81N0/N1UH 2007-09-25...