FUNAI LT6-M32BB Service Manual
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FUNAI LT6-M32BB Service Manual

32" color lcd television
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SERVICE MANUAL

This Service Manual is for the
Serial No. Label
LT6-M32BB(A8CF0EP) model.
For the LT6-M32BB(A8CF0EP) model,
the letter (A8CF0EP) is printed on the
"A8CF0EP"
Serial No. Label. Refer to the Serial
No. Label on the right.
32" COLOR LCD TELEVISION
LT6-M32BB

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Summary of Contents for FUNAI LT6-M32BB

  • Page 1: Service Manual

    SERVICE MANUAL This Service Manual is for the Serial No. Label LT6-M32BB(A8CF0EP) model. For the LT6-M32BB(A8CF0EP) model, the letter (A8CF0EP) is printed on the "A8CF0EP" Serial No. Label. Refer to the Serial No. Label on the right. 32″ COLOR LCD TELEVISION...

  • Page 2: Table Of Contents

    32″ COLOR LCD TELEVISION LT6-M32BB TABLE OF CONTENTS Specifications ................1-1 Important Safety Precautions.

  • Page 3: Specifications

    SPECIFICATIONS < TUNER > VHS/UHF Input ----------- 75Ω unbal., IEC Connector Center IF ------------------- SECAM-L 38.9MHz, SECAM-L’ 33.9MHz Description Condition Unit Nominal Limit 1. Video S/N 2. Audio S/N 40/40 < LCD PANEL > Description Condition Unit Nominal Limit Horizontal pixels 1366 1.
  • Page 4 < AUDIO > All items are measured across 16 Ω load at speaker output terminal. Description Condition Unit Nominal Limit 1. Audio Output Power 10% THD: Lch/Rch 5.0/5.0 4.0/4.0 2. Audio Distortion 500mW: Lch/Rch 1.5/1.5 3.0/3.0 -6dB: Lch 70 to 8 k 3.

  • 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 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 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 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 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: 1. Prepare the hot-air flat pack-IC desoldering Top View Bottom View machine, then apply hot air to the Flat Pack-IC...
  • Page 10 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 11: Instructions For Handling Semi- Conductors

    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 12: 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 13 [4] Rear Cabinet (S-4) (S-4) (S-6) (S-4) (S-5) (S-6) (S-1) (S-4) (S-4) [3] Stand Hinge [2] Stand Cover [1] Stand Base Plate (S-3) (S-2) (S-3) Fig. D1 A8CF0DC...
  • Page 14 [7] Digital Main CBA Unit (S-11) Connector IC Card OSU [6] Shield Box (S-10) (S-9) (S-8) (S-9) (S-10) [5] FFC Shield [8] Shield (T) (S-12) (S-7) [10] Junction-B CBA (S-14) (S-14) (S-14) [9] Power Supply CBA (S-13) Fig. D2 A8CF0DC...
  • Page 15 [18] Front Cabinet [12] LCD Module Assembly [17] Speaker (S-20) [16] Speaker Holder (L,R) (S-20) [17] Speaker (S-20) [16] Speaker Holder (L,R) (S-20) [13] Junction-A (S-19) (S-18) [14] IR Sensor (S-17) [15] Function (S-16) (S-15) [11] Inverter CBA (S-16) Fig. D3 A8CF0DC...

  • Page 16: Wiring Diagram

    TV Cable Wiring Diagram To LCD Module Assembly Digital Main To LCD CBA Unit Module Assembly CN804 CN803B CN4501 CN4502 Junction-B Inverter CBA CN3601 CN3701 CN4503 CN3704 CN1050 Power Supply CN1100 CN1000 CN104A CN101A CN102A CN103A CN803A CN1150 CN1200 CN1901 CLN400 AC CORD CN801...

  • 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 1. Purity Check Mode 2. VCOM Adjustment. This mode cycles through full-screen displays of red, Test Point Adj. Point green, blue, and white to check for non-active pixels. Screen 1. Enter the Service mode. buttons 2. Each time pressing [7] button on the service M.

  • Page 19: White Balance Adjustment

    The following adjustment normally are not attempted in 5. [CUTOFF] the field. Only when replacing the LCD Panel then adjust Press [3] button to select “COB” for Blue Cutoff as a preparation. adjustment. Press [1] button to select “COR” for Red Cutoff adjustment.

  • 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 [ ] button on the remote control unit.

  • Page 21: Block Diagrams

    BLOCK DIAGRAMS System Control Block Diagram A8CF0BLS...
  • Page 22 Video Block Diagram A8CF0BLV...
  • Page 23 Audio-1 Block Diagram A8CF0BLA1...
  • Page 24 Audio-2 Block Diagram A8CF0BLA2...
  • Page 25 Digital Signal Process Block Diagram A8CF0BLD...
  • Page 26 Inverter Block Diagram A8CF0BLINV...
  • Page 27 Power Supply Block Diagram A8CF0BLP...

  • 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: 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 (F1901) 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 30 Power Supply 1/4 Schematic Diagram NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal. VOLTAGE CHART CN104A Pin No. Voltage 13.3 13.3 13.3 23.3 -6.8 A8CF0SCP1...
  • Page 31 Power Supply 2/4 Schematic Diagram VOLTAGE CHART CN103A Pin No. Voltage A8CF0SCP2...
  • Page 32 Power Supply 3/4 Schematic Diagram VOLTAGE CHART CN101A Pin No. Voltage CN102A Pin No. Voltage A8CF0SCP3...
  • Page 33 Power Supply 4/4 Schematic Diagram A8CF0SCP4...
  • Page 34 Inverter & Junction-B Schematic Diagram CAUTION ! NOTE: CAUTION ! The voltage for parts in hot circuit is measured using For continued protection against fire hazard, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. replace only with the same type fuse.
  • Page 35 Function Schematic Diagram A8CF0SCF...
  • Page 36 IR Sensor & Junction-A Schematic Diagram A8CF0SCIR...
  • Page 37 Digital Main 1/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC4513. IC4513 is divided into seven and shown as IC4513 (1/5) ~ IC4513 (4/5) in this Digital Main Schematic Diagram Section. 8-10 A8CF0SCD1...
  • Page 38 Digital Main 2/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC4513. IC4513 is divided into seven and shown as IC4513 (1/5) ~ IC4513 (4/5) in this Digital Main Schematic Diagram Section. 8-11 A8CF0SCD2...
  • Page 39 Digital Main 3/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC4513. IC4513 is divided into seven and shown as IC4513 (1/5) ~ IC4513 (4/5) in this Digital Main Schematic Diagram Section. 8-12 A8CF0SCD3...
  • Page 40 Digital Main 4/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC4513. IC4513 is divided into seven and shown as IC4513 (1/5) ~ IC4513 (4/5) in this Digital Main Schematic Diagram Section. 8-13 A8CF0SCD4...
  • Page 41 Digital Main 5/6 Schematic Diagram 8-14 A8CF0SCD5...
  • Page 42 Digital Main 6/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC4513. IC4513 is divided into seven and shown as IC4513 (1/5) ~ IC4513 (4/5) in this Digital Main Schematic Diagram Section. 8-15 A8CF0SCD6...
  • Page 43 Power Supply CBA Top View NOTE: Because a hot chassis ground is present in the power The voltage for parts in hot circuit is measured using supply circut, an isolation transformer must be used. hot GND as a common terminal. Also, in order to have the ability to increase the input slowly, when troubleshooting this type power supply circuit, a variable isolation transformer is required.
  • Page 44 Power Supply CBA Bottom View NOTE: Because a hot chassis ground is present in the power The voltage for parts in hot circuit is measured using supply circut, an isolation transformer must be used. hot GND as a common terminal. Also, in order to have the ability to increase the input slowly, when troubleshooting this type power supply circuit, a variable isolation transformer is required.
  • Page 45 Inverter CBA Top View CAUTION ! CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. For continued protection against fire hazard, Because a hot chassis ground is present in the power If Main Fuse (F1901) is blown , check to see that all components in the power supply replace only with the same type fuse.
  • Page 46 Inverter CBA Bottom View CAUTION ! CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. For continued protection against fire hazard, Because a hot chassis ground is present in the power If Main Fuse (F1901) is blown , check to see that all components in the power supply replace only with the same type fuse.
  • Page 47 Function CBA Top View IR Sensor CBA Top View Function CBA Bottom View IR Sensor CBA Bottom View BA8CF0F01011-4 BA8CF0F01011-3 8-20...
  • Page 48 Junction-A CBA Junction-A CBA Top View Bottom View BA8CF0F01011-2 Junction-B CBA Junction-B CBA Top View Bottom View BA8CF0F01011 8-21...

  • Page 49: 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 1 of CN102A Pin 18 of CN101A 20µs COMPONENT-Y 0.2V 20µs VIDEO 0.2V 20µs Pin 23 of CN101A Pin 20 of CN101A...
  • Page 50 WF7 ~ WF10 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 5 of CN102A Pin 3 of CN103A WF10 VIDEO-B 0.5V 20µs AUDIO(L) 0.5V 0.5ms Pin 4 of CN102A VIDEO-G 0.5V...

  • Page 51: Wiring Diagrams

    WIRING DIAGRAMS A8CF0WI 10-1...

  • Page 52: Electrical Parts List

    EXPLODED VIEWS Cabinet Digital Main CBA Unit L21 L22 CN3802 CL802 SP802 CL801 SP801 Junction-A CL103A CL102A CL101A CL104A Junction-B CBA IR Sensor CBA Function CBA LCD1 Power Supply CBA Inverter CBA See Electrical Parts List for parts with this mark. AC1901 11-1 A8CF0CEX...
  • Page 53 Packing Some Ref. Numbers are not in sequence. Packing Tape X2-1, X2-2, X2-3, Owners Manual(AR), Owners Manual(BG), Owners Manual(EN), Owners Manual(RU), Owners Manual(UA) Tape Packing Tape Tape Packing Tape 11-2 A8CF0PEX...

  • Page 54: Mechanical Parts List

    MECHANICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. ! have special characteristics important to safety. SCREW S-TIGHT M3X4 BIND HEAD+BLK GBHS3040 Before replacing any of these components, read SCREW S-TIGHT M3X6 BIND HEAD+ GBJS3060 carefully the product safety notice in this service DOUBLE SEMS SCREW M4X10 + BLK...

  • Page 55: Electrical Parts List

    ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. ! have special characteristics important to safety. C224 ELECTROLYTIC CAP . 47µF/16V M CE1CMASDL470 Before replacing any of these components, read C225 CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V CHD1EZ30F104 carefully the product safety notice in this service C226...
  • Page 56 Ref. No. Description Part No. Ref. No. Description Part No. C323 CHIP CERAMIC CAP .(1608) CH J 390pF/50V CHD1JJ3CH391 C657 CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V CHD1EZ30F104 C324 CHIP CERAMIC CAP .(1608) B K 1µF/10V CHD1AK30B105 C658 CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V CHD1EZ30F104 C327 CHIP CERAMIC CAP .(1608) B K 1µF/10V...
  • Page 57 Ref. No. Description Part No. Ref. No. Description Part No. CONNECTORS D330 ZENER DIODE MTZJT-775.6B or QDTB0MTZJ5R6 DIODE ZENER 5V6BSB-T26 NDTB5R6BST26 CN101A FMN CONNECTOR TOP25P 25FMN-BTK- JCFNG25JG019 A(LF)(SN) or D331 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 FFC CONNECTOR IMSA-9615S-25A-PP-A JC96J25ER007 DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 CN102A FMN CONNECTOR TOP25P 25FMN-BTK-...
  • Page 58 Ref. No. Description Part No. Ref. No. Description Part No. SCHOTTKY BARRIER DIODE SB240-B/P or NDQZ000SB240 D807 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 SCHOTTKY BARRIER DIODE SB240-B/P NDWZ000SB240 DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 D633 DIODE FR154 or NDLZ000FR154 D816 ZENER DIODE MTZJT-775.6B or QDTB0MTZJ5R6 DIODE FR154BD NDL1000FR154...
  • Page 59 Ref. No. Description Part No. Ref. No. Description Part No. Q304 TRANSISTOR KTC3199-GR-AT/P or NQS4KTC3199P TRANSISTOR 2SA1015-GR(TE2 F T) or QQS12SA1015F TRANSISTOR KTC3198-GR-AT/P or NQS4KTC3198P TRANSISTOR 2SA1015-Y(TE2 F T) QQSY2SA1015F TRANSISTOR 2SC1815-GR(TE2 F T) or QQS12SC1815F Q645 TRANSISTOR 2SD400(E) or QQUE002SD400 NPN TRANSISTOR 2SC5343G-AT or NQSG02SC5343...
  • Page 60 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 2.4k Ω or RES CHIP 1608 1/10W J 560 Ω R230 RRXAJR5Z0242 RRXA561YF002 RES CHIP 1608 1/10W J 2.4k Ω CHIP RES.(1608) 1/10W 0 Ω or RRXA242YF002 R325 RRXAZR5Z0000...
  • Page 61 Ref. No. Description Part No. Ref. No. Description Part No. CARBON RES. 1/4W J 820k Ω CARBON RES. 1/4W J 12k Ω R403 RCX4JATZ0824 R645 RCX4JATZ0123 CARBON RES. 1/4W J 390k Ω CARBON RES. 1/4W J 12k Ω R404 RCX4JATZ0394 R646 RCX4JATZ0123 CARBON RES.
  • Page 62 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W 0 Ω or R714 RRXAZR5Z0000 JACK SW DIN PCB S 04 MDC-076H-A LF JYEJ040LY002 RES CHIP 1608 1/10W J 0 Ω RRXA000YF002 JK204 JACK SW RCA PCB S RCA-347HDT-02 or JYRJ030YUQ01 CHIP RES.
  • Page 63 Ref. No. Description Part No. Ref. No. Description Part No. TACT SWITCH TC-1104(H=5.0) or SST0101DNG02 C1017 CHIP CERAMIC CAP .(1608) B K 0.01µF/50V CHD1JK30B103 TACT SWITCH KSM0612B SST0101HH003 C1018 CHIP CERAMIC CAP .(1608) B K 0.1µF/50V CHD1JK30B104 SW109 TACT SWITCH SKQSAB or SST0101AL038 C1019 CHIP CERAMIC CAP .(1608) B K 0.01µF/50V...
  • Page 64 Ref. No. Description Part No. Ref. No. Description Part No. CERAMIC CAP .(AX) B 1500pF/50V CCK1JKT0B152 D1042 ZENER DIODE MTZJT-7724B or QDTB00MTZJ24 C1515 CAP CERAMIC (AX) 1500pF/50V/B/K or CA1J152TU061 DIODE ZENER 24BSB-T26 NDTB024BST26 CERAMIC CAP .(AX) B 1500pF/50V CCK1JKT0B152 D1043 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 C1550...
  • Page 65 Ref. No. Description Part No. Ref. No. Description Part No. DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 DIODE ZENER 5V6BSB-T26 NDTB5R6BST26 D1213 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 D1971 ZENER DIODE MTZJT-775.6B or QDTB0MTZJ5R6 DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 DIODE ZENER 5V6BSB-T26 NDTB5R6BST26 D1214 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 D1980 ZENER DIODE MTZJT-7736B or...
  • Page 66 Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W F 750 Ω RESISTORS RTW7500YF002 CHIP RES. 1/10W J 5.1k Ω or CHIP RES. 1/10W J 20k Ω or R1067 RRXAJR5Z0512 R1000 RRXAJR5Z0203 RES CHIP 1608 1/10W J 5.1k Ω RES CHIP 1608 1/10W J 20k Ω...
  • Page 67 Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W F 6.80k Ω CHIP RES. 1/10W J 100k Ω or RTW6801YF002 R1506 RRXAJR5Z0104 CHIP RES. 1/10W F 6.8k Ω or RES CHIP 1608 1/10W J 100k Ω R1169 RRXAFR5H6801 RRXA104YF002...
  • Page 68 Ref. No. Description Part No. RES CHIP 1608 1/10W F 6.80k Ω RTW6801YF002 CHIP RES. 1/10W F 6.8k Ω or R1976 RRXAFR5H6801 CHIP RES. 1/10W F 6.8k Ω or RRXAFR5Z6801 RES CHIP 1608 1/10W F 6.80k Ω RTW6801YF002 CHIP RES. 1/10W F 8.2k Ω or R1977 RRXAFR5H8201 CHIP RES.(1608) 1/10W F 8.2k Ω...
  • Page 69 LT6-M32BB A8CF0EP 2008-05-26...

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