FUNAI LCD-C1504 Service Manual

15", 20" color lcd television

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SERVICE MANUAL

15" COLOR LCD TELEVISION

20" COLOR LCD TELEVISION

LCD-C1504

LCD-C2004

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Page 1 SERVICE MANUAL 15" COLOR LCD TELEVISION LCD-C1504 20" COLOR LCD TELEVISION LCD-C2004...
Page 2: Table Of Contents
15″/20″ COLOR LCD TELEVISION LCD-C1504 LCD-C2004 TABLE OF CONTENTS Specifications ............1-1 Schematic Diagrams..........8-3 Important Safety Precautions........ 2-1 CBA Views and Test Points......... 8-12 Standard Notes for Servicing ........ 3-1 Waveforms............. 9-1 Cabinet Disassembly Instructions ......4-1 Wiring Diagram ............ 10-1 How to Initialize the LCD Television......
Page 3: Specifications
SPECIFICATIONS <TUNER> ANT. Input ------------------- 80 dBµV, Video: PAL 87.5%, Audio: 30 kHz dev (1 kHz Sin) Test Input Signal----------- 400Hz 30% modulation Description Condition Unit Nominal Limit 1. Intermediate Freq. Picture 45.75 Sound 41.25 2. Color Killer Sens. CH-3 dBµV 3.
Page 4: 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 5 4. Hot Chassis Warning - 7. Product Safety Notice - Some electrical and mechanical parts have special safety-related a. Some TV receiver chassis are electrically characteristics which are often not evident from connected directly to one conductor of the AC visual inspection, nor can the protection they give power cord and maybe safety-serviced without necessarily be obtained by replacing them with...
Page 6 Precautions during Servicing A. Parts identified by the ! symbol are critical for M. When installing parts or assembling the cabinet safety. parts, be sure to use the proper screws and Replace only with part number specified. tighten certainly. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation.
Page 7 Safety Check after Servicing Examine the area surrounding the repaired location Chassis or Secondary Conductor for damage or deterioration. Observe that screws, parts and wires have been returned to original posi- tions. Afterwards, perform the following tests and con- Primary Circuit Terminals firm the specified values in order to verify compliance with safety standards.
Page 8: 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: 1. Prepare the hot-air flat pack-IC desoldering Top View Bottom View machine, then apply hot air to the Flat Pack-IC...
Page 9 With Soldering Iron: 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 all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, flux which is applied to all pins of the flat pack-IC, you can remove it easily.
Page 10 2. Installation Instructions for Handling Semi- 1. Using desoldering braid, remove the solder from conductors the foil of each pin of the flat pack-IC on the CBA Electrostatic breakdown of the semi-conductors may so you can install a replacement flat pack-IC more occur due to a potential difference caused by easily.
Page 11: Cabinet Disassembly Instructions
CABINET DISASSEMBLY INSTRUCTIONS [LCD-C1504] 2. Disassembly Method REMOVAL 1. Disassembly Flowchart REMOVE/ This flowchart indicates the disassembly steps for the *UNHOOK/ LOC. PART Fig. cabinet parts and the CBA in order to gain access to UNLOCK/ Note item(s) to be serviced. When reassembling, follow the RELEASE/UNPLUG/ steps in reverse order.
Page 12 [1] Rear Cabinet (S-1) (S-1) (S-2) (S-1) (S-2) (S-1) Fig. D1 [9] Front Cabinet [8] Speaker (S-10) (S-8) [2] Jack Holder (S-8) [3] Jack Shield (S-3) (S-10) [5] Main CBA (S-4) (S-8) (S-10) (S-3) (S-9) [7] Function CBA (S-5) (S-10) [8] Speaker (S-6) (S-6)
Page 13 Wiring Diagram To LCD Module Assembly CN320A CN321A LCD Main CBA CN101B CN102B CN103B CN402 CN101A CN102A CN103A To LCD Module Assembly CN401 Main CBA CN31A CN802 CN801 To Speaker To Speaker CN31B Function CBA Fig. D3 L4102DC...
Page 14 [LCD-C2004] 2. Disassembly Method REMOVAL 1. Disassembly Flowchart REMOVE/ This flowchart indicates the disassembly steps for the LOC. PART *UNHOOK/UNLOCK/ Fig. cabinet parts and the CBA in order to gain access to Note RELEASE/UNPLUG/ item(s) to be serviced. When reassembling, follow the DESOLDER steps in reverse order.
Page 15 (S-1) (S-1) (S-1) (S-1) (S-2) (S-1) (S-2) (S-1) (S-1) (S-1) [1] Rear Cabinet Fig. D1 [11] Front Cabinet [8] Function CBA (S-9) (S-9) [10] Speaker (S-11) [2] Jack Holder (S-8) [3] Jack Shield (S-11) (S-3) [5] Main CBA (S-8) (S-8) (S-4) (S-6) (S-11)
Page 16 Cable Wiring Diagram To LCD Module Assembly CN311A CN313A CN310A LCD Main CBA CN101B CN102B CN103B Main CBA Inverter CBA CN51 CN1403 To LCD CN101A CN102A CN103A Module Assembly CN1402 CN405 CN1401 CN1405 To LCD Module Assembly CN1404 CN53 CN802 CN801 To Speaker To Speaker...
Page 17: How To Initialize The Lcd Television
HOW TO INITIALIZE THE LCD TELEVISION To put the program back at the factory-default, initialize the LCD television as the following procedure. How to initialize the LCD television: 1. Turn the power on. (Use main power on the TV unit.) 2.
Page 18: Electrical Adjustment Instructions
ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: 1. Initial Setting “CBA” is abbreviation for “Circuit Board Assem- General bly.” Enter the Service mode. NOTE: Electrical adjustments are required after replacing Set the each initial data as shown on table 1 below. circuit components and certain mechanical parts. It is Table 1: Initial Data important to perform these adjustments only after all repairs and replacements have been completed.
Page 19 MENU → 9 1. Connect DC Volt Meter to TP401 and C-CLR-B(NTSC) TP300(GND). C-TNT(NTSC) 2. Adjust VR649 so that the voltage of TP401 C-SHR(NTSC) becomes +13.0±0.3V DC [LCD-C1504] or BRIGHT +21.0±0.3V DC [LCD-C2004]. NORMAL DARK VOL. p → 1 COR(C/D/S-1) VOL.
Page 20 3. Flicker Adjustment The following adjustment normally are not attempted in the field. Only when replacing the Adjustment Point: R977 (LCD Main CBA) LCD Panel then adjust as a preparation. LCD Main CBA 4. White Balance Adjustment R977 Purpose: To mix red, green and blue beams correctly for pure white.
Page 21: Block Diagrams
BLOCK DIAGRAMS System Control Block Diagram L4102BLS...
Page 22 IF/Video Block Diagram L4102BLIF...
Page 23 Audio Block Diagram L4102BLA...
Page 24 LCD Block Diagram ( A ) L4102BLLCD...
Page 25 LCD Block Diagram ( B ) L4202BLLCD...
Page 26 Power Supply Block Diagram L4102BLP...
Page 27 LCD Backlight Block Diagram ( A ) L4102BLLB...
Page 28 LCD Backlight Block Diagram ( B ) L4202BLLB...
Page 29: Schematic Diagrams / Cba's And Test Points
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS Standard Notes 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. Replacement parts that have these special safety characteristics are identified in this manual and its supplements;...
Page 30 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. 2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.
Page 31 Main 1/4 & IR Sensor Schematic Diagram Comparison Chart of Models and Marks MODEL MARK LCD-C1504 LCD-C2004 L4102SCM1...
Page 32 Main 2/4 Schematic Diagram L4102SCM2...
Page 33 Main 3/4 Schematic Diagram Comparison Chart of Models and Marks MODEL MARK LCD-C1504 LCD-C2004 L4102SCM3...
Page 34 MODEL MARK CAUTION ! NOTE: CAUTION ! LCD-C1504 For continued protection against fire hazard, The voltage for parts in hot circuit is measured using Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. LCD-C2004 replace only with the same type fuse.
Page 35 Function Schematic Diagram ( A ) Comparison Chart of Models and Marks MODEL MARK LCD-C1504 LCD-C2004 L4102SCF...
Page 36 Function Schematic Diagram ( B ) Comparison Chart of Models and Marks MODEL MARK LCD-C1504 LCD-C2004 L4202SCF...
Page 37 Inverter Schematic Diagram ( B ) Comparison Chart of Models and Marks MODEL MARK LCD-C1504 LCD-C2004 L4202SCINV...
Page 38 LCD Main 1/2 Schematic Diagram Comparison Chart of Models and Marks MODEL MARK LCD-C1504 LCD-C2004 8-10 L4102SCL1...
Page 39 LCD Main 2/2 Schematic Diagram Comparison Chart of Models and Marks 1 NOTE : CN104, CN105, CN301 are used for adjustment at factory. MODEL MARK LCD-C1504 LCD-C2004 8-11 L4102SCL2...
Page 40 Main CBA Top View CAUTION ! CAUTION ! Because a hot chassis ground is present in the power supply circut, an isolation transformer must be used. For continued protection against fire hazard, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply Also, in order to have the ability to increase the input replace only with the same type fuse.
Page 41 Main CBA Bottom View CAUTION ! CAUTION ! Because a hot chassis ground is present in the power Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. supply circut, an isolation transformer must be used. For continued protection against fire hazard, replace only with the same type fuse.
Page 42 Function CBA Bottom View ( A ) BL4100F01012-2 Comparison Chart of Models and Marks MODEL MARK LCD-C1504 Function CBA Top View ( B ) LCD-C2004 IR Sensor CBA Top & Bottom View ( B ) Function CBA Bottom View ( B ) BL4100F01012-3...
Page 43 Inverter CBA Top View ( B ) Comparison Chart of Models and Marks MODEL MARK LCD-C1504 LCD-C2004 Inverter CBA Bottom View ( B ) 8-15 BL4200F01011...
Page 44: Waveforms
WAVEFORMS WF1 ~ WF8 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 14 of IC801 Q754 EMITTER Q751 EMITTER AUDIO AUDIO 0.1V 0.1V 0.5ms 0.5ms CVBS2 CVBS2 0.2V...
Page 45 WF9 ~ WF14 = Waveforms to be observed at Models and Marks Waveform check points. MODEL MARK (Shown in Schematic Diagram.) LCD-C1504 LCD-C2004 Input: PAL Color Bar Signal (with 1kHz Audio Signal) R904 R997 ( A ) WF12 R994 ( B ) 10µs...
Page 46: Wiring Diagram
WIRING DIAGRAMS ( A ) 10-1 L4102WI...
Page 47 WIRING DIAGRAMS ( B ) 10-2 L4202WI...
Page 48 EXPLODED VIEWS Cabinet [LCD-C1504] CLN802 SP802 Main CBA LCD1 CLN801 Function CBA SP801 See Electrical Parts List for parts with this mark. LCD Main CBA AC601 11-1 L4102CEX...
Page 49 [LCD-C2004] Function CBA CLN802 LCD1 SP802 Main CBA CLN801 SP801 CN313A CN311A IR Sensor CBA LCD Main CBA Inverter CBA See Electrical Parts List CN310A for parts with this mark. AC601 11-2 L4202CEX...
Page 50 Packing [LCD-C1504] Some Ref. Numbers are not in sequence. Tape X2-2 X2-3 X2-4 Tape Packing Tape Packing Tape Packing Tape 11-3 L4102PEX...
Page 51 [LCD-C2004] Some Ref. Numbers are not in sequence. Packing Tape Packing Tape Tape X2-2 X2-3 X2-4 Tape Packing Tape Packing Tape Packing Tape 11-4 L4202PEX...
Page 52: Mechanical Parts List
SENSOR/LED LENS L0301UB 1EM220004 NOTE: Parts that are not assigned part numbers RATING LABEL L4202FC ---------- (---------) are not available. FUNCTION KNOB L4200EA 1EM320157 [ LCD-C1504 ] REAR COVER L4200EA 1EM320158 TILT STAND ASSEMBLY L0301UB 1EMN20039 Ref. No. Description Part No.
Page 53: Electrical Parts List
C485 CERAMIC CAP . SL D 10pF/3KV CCD3FDASL100 Model Mark C486 CERAMIC CAP . SL D 10pF/3KV CCD3FDASL100 LCD-C1504 C487 ELECTROLYTIC CAP . 100µF/16V M or CE1CMASDL101 LCD-C2004 ELECTROLYTIC CAP . 100µF/16V M CE1CMASTL101 C488 ELECTROLYTIC CAP . 100µF/16V M or...
Page 54 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. FILM CAP .(MP) 0.1µF/250V K or CT2E104DC011 C649 CHIP CERAMIC CAP .(1608) B K 0.01µF/ CHD1JK30B103 METALLIZED FILM CAP . 0.1µF/275V K or CT2E104HJE06 C651 CHIP CERAMIC CAP .(1608) B K 0.01µF/ CHD1JK30B103 LINE ACROSS CAP .
Page 55 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. C781 CHIP CERAMIC CAP .(1608) B K 0.01µF/ CHD1JK30B103 C855 CHIP CERAMIC CAP . F Z 0.47µF/16V CHD1CZ30F474 C860 ELECTROLYTIC CAP . 22µF/16V M or CE1CMASDL220 C782 ELECTROLYTIC CAP . 47µF/16V M H7 CE1CMAVSL470 ELECTROLYTIC CAP .
Page 56 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. ZENER DIODE DZ-9.1BSBT265 NDTB0DZ9R1BS SWITCHING DIODE KDS160E-RTK/P ND1ZKDS160EP D442! SWITCHING DIODE 1SS400 or QD1Z001SS400 D514 SCHOTTKY BARRIER DIODE ERC81- QDPZERC81004 SWITCHING DIODE KDS160E-RTK/P ND1ZKDS160EP D516 ZENER DIODE MTZJT-778.2B or QDTB0MTZJ8R2 D443 SWITCHING DIODE 1SS400 or...
Page 57 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. D641 ZENER DIODE MTZJT-7736B or QDTB00MTZJ36 SWITCHING DIODE 1N4148 NDTZ001N4148 ZENER DIODE DZ-36BSBT265 NDTB00DZ36BS D642! SWITCHING DIODE 1SS400 or QD1Z001SS400 IC503 IC REGULATOR KA78R08C NSZBA0SF3119 SWITCHING DIODE KDS160E-RTK/P ND1ZKDS160EP IC504 VOLTAGE REGULATOR PQ070XF01SZH QSZBA0SSH054...
Page 58 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. TRANSISTOR KTC3199(GR) or NQS10KTC3199 TRANSISTOR 2SA1318(T)-AANP or 2SA1318TZ TRANSISTOR KTC3198(GR) NQS40KTC3198 TRANSISTOR 2SA1318(U)-AANP 2SA1318UZ Q424 TRANSISTOR 2SC2785(F) or QQSF02SC2785 Q503 TRANSISTOR 2SC2120-O-TPE2 or QQS002SC2120 TRANSISTOR 2SC2785(H) or QQSH02SC2785 TRANSISTOR 2SC2120-Y(TPE2) QQSY02SC2120 TRANSISTOR 2SC2785(J) or...
Page 59 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. TRANSISTOR 2SC2785(H) or QQSH02SC2785 Q872 TRANSISTOR 2SC2785(F) or QQSF02SC2785 TRANSISTOR 2SC2785(J) or QQSJ02SC2785 TRANSISTOR 2SC2785(H) or QQSH02SC2785 TRANSISTOR KTC3199(GR) or NQS10KTC3199 TRANSISTOR 2SC2785(J) or QQSJ02SC2785 TRANSISTOR KTC3198(GR) NQS40KTC3198 TRANSISTOR KTC3199(GR) or NQS10KTC3199 Q734...
Page 60 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CARBON RES. 1/4W J 5.6 k Ω METAL OXIDE FILM RES. 2W J 0.22 Ω or RN02R22ZU001 R477 RCX4JATZ0562 R608 CARBON RES. 1/4W J 10 k Ω METAL OXIDE FILM RES. 2W J 0.22 Ω R478 RCX4JATZ0103 RN02R22DP004...
Page 61 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. METAL OXIDE FILM RES. 2W J 470 Ω or RN02471ZU001 CHIP RES.(1608) 1/10W J 75 Ω R668! R765 RRXAJR5Z0750 METAL OXIDE FILM RES. 2W J 470 Ω CHIP RES.(1608) 1/10W J 100 Ω RN02471DP004 R766 RRXAJR5Z0101...
Page 62 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CARBON RES. 1/4W J 22 k Ω R878 RCX4JATZ0223 VR649! A CARBON P .O.T VZ067TL1 B202 PB(F) VRCB202HH014 CARBON RES. 1/4W J 22 k Ω R879 RCX4JATZ0223 VR649! B CARBON P .O.T.
Page 63 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CHIP RES.(1608) 1/10W J 10 k Ω RRXAJR5Z0103 C1417 ELECTROLYTIC CAP . 470µF/35V M(VR) CE1GMZNTL471 CHIP RES.(1608) 1/10W J 100 Ω RRXAJR5Z0101 ELECTROLYTIC CAP . 470µF/35V M or CE1GMZADL471 SWITCHES ELECTROLYTIC CAP .
Page 64 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. C1495 CHIP CERAMIC CAP .(1608) B K 0.22µF/ CHD1EK30B224 D1437 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 SWITCHING DIODE 1N4148 NDTZ001N4148 C1496 CHIP CERAMIC CAP .(1608) B K 0.22µF/ CHD1EK30B224 D1440 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133...
Page 65 Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CHIP RES.(1608) 1/10W J 5.1 k Ω Q1407! B FET TPC8405(TE12 L Q) QF2ZTPC8405Q R1405 RRXAJR5Z0512 CHIP RES.(1608) 1/10W J 10 k Ω Q1408! B FET TPC8405(TE12 L Q) QF2ZTPC8405Q R1406 RRXAJR5Z0103...
Page 66 Ref. No. Mark Description Part No. CHIP RES.(1608) 1/10W J 680 k Ω R1483 RRXAJR5Z0684 CARBON RES. 1/4W J 10 k Ω R1484 RCX4JATZ0103 CHIP RES.(1608) 1/10W J 680 k Ω R1485 RRXAJR5Z0684 CHIP RES.(1608) 1/10W J 10 k Ω R1486 RRXAJR5Z0103 CARBON RES.
Page 67 LCD-C1504/LCD-C2004 L4102FC/L4202FC 2005-3-25...

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