FUNAI LCD-A3206 Service Manual
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FUNAI LCD-A3206 Service Manual

32" color lcd television
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SERVICE MANUAL

32" COLOR LCD TELEVISION
LCD-A3206/LCD-B3206/
LCD-C3206/LCD-D3206

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Summary of Contents for FUNAI LCD-A3206

  • Page 1: Service Manual

    SERVICE MANUAL 32" COLOR LCD TELEVISION LCD-A3206/LCD-B3206/ LCD-C3206/LCD-D3206...

  • Page 2: Table Of Contents

    32″ COLOR LCD TELEVISION LCD-A3206/LCD-B3206/ LCD-C3206/LCD-D3206 TABLE OF CONTENTS Specifications ................1-1 Important Safety Precautions.

  • Page 3: Specifications

    SPECIFICATIONS < TUNER > ANT. Input -----------------------75 ohm Unbal., F type Reference Level ---------------20 Vp-p (LCD Green Cathode) Test Input Signal---------------400 Hz 30% modulation Description Condition Unit Nominal Limit Picture 45.75 1. Intermediate Freq. Sound 41.25 CH-2 dBµV 2. Color Killer Sens. CH-10 dBµV CH-55...

  • 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 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 1. Disassembly Flowchart Removal Step/ Remove/*Unhook/ This flowchart indicates the disassembly steps for the 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 12 [5] Function CBA [4] Rear Cabinet [3] Stand Cover [2] Stand Hinge [1] Stand Base Plate Fig. D1 L5920DC...
  • Page 13 [9] Shield Box [7] Jack Holder(D) S-11 S-11 S-11 S-11 S-10 [8] Jack Holder(A) [6] Chassis Bracket Fig. D2 [12] Inverter CBA S-14 S-15 [10] Main CBA S-16 S-12 S-15 S-12 [13] PCB Holder S-16 S-13 S-12 [11] Digital Main CBA Unit S-13 Fig.
  • Page 14 [20] Front Cabinet [18] Speaker (R) [14] Panel Holder S-18 S-21 S-17 S-18 S-18 [15] T-CON CBA S-17 S-19 S-17 S-18 S-19 S-20 S-17 [17] LED CBA S-22 S-18 [19] Speaker (L) [16] LCD Module Assembly S-18 S-17 [14] Panel Holder S-18 S-17 Fig.
  • Page 15 TV Cable Wiring Diagram To LCD Module Assembly Inverter CBA To LCD Module Assembly CN1050 CN1150 CN1250 CN1100 CN1200 CN1300 CN214 CN211 CN213 CN212 CN1000 CN111 T-CON CBA Digital Main Main CBA CBA Unit CN54 CN703 CN400 CN11A CN101A CN101B CN102B CN102A CN111...

  • Page 16: 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 off. 2. To enter the service mode, while pressing [SETUP] button, press [STANDBY-ON] button on the TV unit.

  • Page 17: 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 18 2. Purity Check Mode BUTTON DATA ITEM (on the remote VALUE This mode cycles through full-screen displays of red, control) green, blue, and white to check for non-active pixels. DT-BRT 1. Enter the Service mode. DT-CNT 2. Each time pressing [7] button on the service DT-CLR-R MENU →...

  • Page 19: Auto Calibration

    3. Flicker Adjustment 4. Auto Calibration *This adjustment is needed when reparing T-CON Purpose: To bring the color adjustment of each CBA. component into standard alignment. 1. Enter the Service mode. Symptom of Misadjustment: If this adjustment is 2. Press [2] button on the remote control unit. incorrect, component signals do not reproduce the The following screen appears.

  • Page 20: White Balance Adjustment

    The following adjustment normally are not [YUV] Enter the Service mode. Press “VOL p” button on attempted in the field. Only when replacing the the remote control unit and select “C/D/S 2” mode. LCD Panel then adjust as a preparation. [RGB] Enter the Service mode.

  • Page 21: Block Diagrams

    BLOCK DIAGRAMS System Control Block Diagram L5920BLS...
  • Page 22 Video Selector Block Diagram L5920BLV...
  • Page 23 Audio Block Diagram L5920BLA...
  • Page 24 Digital Signal Process Block Diagram L5920BLLCD...
  • Page 25 Inverter Block Diagram L5920BLINV...
  • Page 26 Power Supply Block Diagram L5920BLP...

  • Page 27: 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 28 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 29 Main 1/5 Schematic Diagram NOTE: # is an unnecessary part of the circuit configuration; therefore servicing is not required, for this product operates independently of this part. L5920SCM1...
  • Page 30 Main 2/5 Schematic Diagram NOTE: # is an unnecessary part of the circuit configuration; therefore servicing is not required, for this product operates independently of this part. L5920SCM2...
  • Page 31 Main 3/5 Schematic Diagram VOLTAGE CHART CN103A Pin No. Voltage L5920SCM3...
  • Page 32 Main 4/5 Schematic Diagram NOTE: # is an unnecessary part of the circuit configuration; therefore servicing is not required, for this product operates independently of this part. VOLTAGE CHART CN101A CN104A Pin No. Voltage Pin No. Voltage CN102A Pin No. Voltage -0.6 L5920SCM4...
  • Page 33 Main 5/5 Schematic Diagram CAUTION ! NOTE: CAUTION ! 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. replace only with the same type fuse. If Main Fuse (F601) is blown , check to see that all components in the power supply hot GND as a common terminal.
  • Page 34 Function Schematic Diagram VOLTAGE CHART CN11B Pin No. Voltage L5920SCF...
  • Page 35 LED Schematic Diagram VOLTAGE CHART CN54B Pin No. Voltage L5920SCL...
  • Page 36 Inverter Schematic Diagram 8-10 L5920SCINV...
  • Page 37 Digital Main 1/5 Schematic Diagram NOTE: # is an unnecessary part of the circuit configuration; therefore servicing is not required, for this product operates independently of this part. 8-11 L5920SCD1...
  • Page 38 Digital Main 2/5 Schematic Diagram 8-12 L5920SCD2...
  • Page 39 Digital Main 3/5 Schematic Diagram NOTE: # is an unnecessary part of the circuit configuration; therefore servicing is not required, for this product operates independently of this part. 8-13 L5920SCD3...
  • Page 40 Digital Main 4/5 Schematic Diagram 8-14 L5920SCD4...
  • Page 41 Digital Main 5/5 Schematic Diagram 8-15 L5920SCD5...
  • Page 42 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 43 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 44 Function CBA Top View LED CBA Top View Function CBA Bottom View LED CBA Bottom View BL5820F01011-2 BL5820F01011-3 8-18...
  • Page 45 Inverter CBA Top View 8-19 BL4400F01022...
  • Page 46 Inverter CBA Bottom View 8-20 BL4400F01022...

  • Page 47: Waveforms

    WAVEFORMS WF1 ~ WF6 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 11 of CN103A Pin 6 of CN103A CVBS 0.2V 20µs COMPONENT-Y 0.2V 20µs 20µs Pin 14 of CN103A Pin 8 of CN103A...
  • Page 48 WF7 ~ WF10 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 13 of CN104A Pin 5 of IC801 WF10 0.5V 20µs AUDIO 0.5V 0.5ms Pin 14 of CN104A 0.5V 20µs Pin 15 of CN104A...

  • Page 49: Wiring Diagram

    WIRING DIAGRAMS 10-1 L5920WI...

  • Page 50: Exploded View

    EXPLODED VIEWS Cabinet CLN11 SP802 Function CBA Inverter CBA T-CON CBA CLN10 Main CBA LED CBA SP801 AC601 LCD Module Assembly Digital Main CBA Unit See Electrical Parts List L3 L3 for parts with this mark. 11-1 L5920CEX...
  • Page 51 X2-8 X2-14 Packing Tape Tape Packing Tape Packing Tape Comparison Chart of Models and Marks Packing Tape Model Mark LCD-A3206 LCD-B3206 LCD-C3206 LCD-D3206 Packing Tape Packing Tape Packing Tape Some Ref. Numbers are Packing Tape not in sequence. 11-2 L5920PEX...

  • Page 52: Mechanical Parts List

    GBJP4140 Comparison Chart of Models and Marks SCREW P-TIGHT M4X14 PAN GPHP4140 HEAD+BLK Model Mark SCREW P-TIGHT 3X10 BIND HEAD+ GBJP3100 LCD-A3206 DOUBLE SEMS SCREW M4X10 + BLK FPH34100 LCD-B3206 DOUBLE SEMS SCREW M4X6 M4X6 FPJ34060 LCD-C3206 PACKING LCD-D3206 CARTON L5920EA...

  • Page 53: Electrical Parts List

    C504 ELECTROLYTIC CAP . 100µF/16V M or CE1CMASDL101 ELECTROLYTIC CAP . 100µF/16V M or CE1CMASTM101 Model Mark ELECTROLYTIC CAP . 100µF/16V M CA1C101SP085 LCD-A3206 C505 ELECTROLYTIC CAP . 10µF/100V M or CE2AMASDL100 LCD-B3206 ALUMINUM ELECTROLYTIC CAP 10µF/100V CE2AMASTM100 LCD-C3206 LCD-D3206 C506 CERAMIC CAP .(AX) B K 0.1µF/50V...
  • Page 54 Ref. No. Description Part No. Ref. No. Description Part No. C546 CHIP CERAMIC CAP .(1608) B K 0.1µF/50V CHD1JK30B104 C612! ACROSS THE LINE CAP . 0.1U/250V or CT2E104DC015 C547 CHIP CERAMIC CAP .(1608) B K 0.1µF/50V CHD1JK30B104 ACROSS THE LINE CAP . 0.1µF/250V K or CT2E104DC011 C548 CHIP CERAMIC CAP .(1608) B K 0.1µF/50V...
  • Page 55 Ref. No. Description Part No. Ref. No. Description Part No. ALUMINUM ELECTROLYTIC CAP 47µF/16V M CE1CMASTM470 C814 ALUMINUM ELECTROLYTIC CAP 1000µF/35V CE1GMZNTM102 M or ELECTROLYTIC CAP . 47µF/16V M CA1C470SP085 ELECTROLYTIC CAP . 1000µF/35V M or CE1GMZPDL102 C769 ELECTROLYTIC CAP . 10µF/16V M or CE1CMASDL100 ELECTROLYTIC CAP .
  • Page 56 Ref. No. Description Part No. Ref. No. Description Part No. C924 CHIP CERAMIC CAP . B K 270pF/50V CHD1JK30B271 D548 RECTIFIER DIODE ERA22-02 QDPZ0ERA2202 CONNECTORS D549 SCHOTTKY BARRIER DIODE ERA81-004Q QDLZRA81004Q D550 SWITCHING DIODE 1SS400 or QD1Z001SS400 CN01 TERMINAL PRINTBORD PIN MS-PIN155155 JTEA001CHY01 SWITCHING DIODE KDS160E-RTK/P ND1ZKDS160EP...
  • Page 57 DIODE ZENER SMD 015AZ5.6 Y QD1Y015AZ5R6 TRANSISTOR 2SC2785(J) QQSJ02SC2785 D985 ZENER DIODE EDZTE61 5.6B or QD1B00EDZ5R6 Q510 TRANSISTOR S2Y52(FUNAI Q H) QQWZ00S2Y52Q DIODE ZENER SMD 015AZ5.6 Y QD1Y015AZ5R6 Q512 NPN TRANSISTOR KRC103M-AT/P or NQSZKRC103MP D986 ZENER DIODE EDZTE61 5.6B or QD1B00EDZ5R6 RES.
  • Page 58 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W 0 Ω or TRANSISTOR KTC3198-GR-AT/P or NQS4KTC3198P RRXAJR5Z0000 RES CHIP 1608 1/10W J 0 Ω TRANSISTOR 2SC2785(F) or QQSF02SC2785 RRXA000YF002 CHIP RES. 1/10W J 22k Ω or TRANSISTOR 2SC2785(H) or QQSH02SC2785 R501...
  • Page 59 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W F 2.2k Ω or CARBON RES. 1/4W J 220k Ω RRXAFR5Z2201 R613 RCX4JATZ0224 RES CHIP 1608 1/10W F 2.20k Ω RTW2201YF002 R614 PCB JUMPER D0.6-P5.0 JW5.0T CARBON RES. 1/4W J 820 Ω CARBON RES.
  • Page 60 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 10k Ω or RES CHIP 1608 1/10W J 1.2k Ω R728 RRXAJR5Z0103 RRXA122YF002 RES CHIP 1608 1/10W J 10k Ω CHIP RES. 1/10W J 1.2k Ω or RRXA103YF002 R810 RRXAJR5Z0122...
  • Page 61 Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W J 560 Ω RRXA561YF002 T631! TRANS POWER 6739 LTT3PC0KT013 CHIP RES. 1/10W J 10k Ω or R913 RRXAJR5Z0103 TM601 EYELET TYPE D-1 0VM406868 RES CHIP 1608 1/10W J 10k Ω RRXA103YF002 TM602 EYELET TYPE D-1...
  • Page 62 Ref. No. Description Part No. Ref. No. Description Part No. CONNECTORS C1102 ELECTROLYTIC CAP . 100µF/35V M or CE1GMASDL101 ELECTROLYTIC CAP . 100µF/35V M CE1GMASTM101 CN54B PH CONNECTOR SIDE 5P S5B-PH-K- J3PHC05JG030 S(LF)(SN) C1103 CHIP CERAMIC CAP .(1608) B K 0.1µF/50V CHD1JK30B104 DIODES C1104...
  • Page 63 Ref. No. Description Part No. Ref. No. Description Part No. DIODES D1268 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 D1310 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 D1000 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 D1311 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 D1001 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 D1312 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 D1002 ZENER DIODE MTZJT-776.2B or...
  • Page 64 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 1M Ω or CHIP RES.(1608) 1/10W 0 Ω or R1003 RRXAJR5Z0105 R1101 RRXAZR5Z0000 RES CHIP 1608 1/10W J 1.0M Ω CHIP RES. 1/10W J 68 Ω or RRXA105YF002 RRXAJR5Z0680 CHIP RES.
  • Page 65 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W F 470 Ω or CHIP RES. 1/10W F 1.0k Ω or RRXAFR5Z4700 R1501 RRXAFR5H1001 RES CHIP 1608 1/10W F 470 Ω CHIP RES. 1/10W F 1k Ω or RTW4700YF002 RRXAFR5Z1001 CARBON RES.
  • Page 66 Ref. No. Mark Description Part No. MISCELLANEOUS AC601! A,C,D AC CORD CEE 1800MM BLACK WAE0182LW004 AC601! B AC CORD BS 1800MM BLACK WAB0182LW017 TU31 TUNER UNIT TMFE2X402A UTUNPSGAL012 20060818 13-14 L5920EL...

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Lcd-b3206Lcd-c3206Lcd-d3206

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