FUNAI LC5-D32BB Service Manual
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FUNAI LC5-D32BB Service Manual

32" color lcd television
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SERVICE MANUAL

32" COLOR LCD TELEVISION
LC5-D32BB

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Summary of Contents for FUNAI LC5-D32BB

  • Page 1: Service Manual

    SERVICE MANUAL 32″ COLOR LCD TELEVISION LC5-D32BB...
  • Page 2 32″ COLOR LCD TELEVISION LC5-D32BB TABLE OF CONTENTS Specifications ................1-1 Important Safety Precautions.

  • Page 3: Specifications

    SPECIFICATIONS < TUNER > ANT. Input -----------------------75 ohm Unbal., F type Intermediate Freq. ------------Picture 45.75 MHz, Sound 41.25 MHz Description Condition Unit Nominal Limit 1. Video S/N 80dB >43 2. Audio S/N >45 < LCD PANEL > Description Condition Unit Nominal Limit Horizontal...

  • 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 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 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: 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 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 [4] Rear Cabinet [5] Function CBA (S-4) (S-4) (S-6) (S-4) (S-5) (S-4) (S-1) (S-5) (S-4) (S-1) (S-1) (S-1) (S-4) [3] Stand Cover [2] Stand Hinge [1] Stand Base Plate (S-2) (S-3) (S-2) (S-3) (S-2) Fig. D1 A73F0DC...
  • Page 13 [10] Digital Main CBA Unit [8] Jack Holder(D) (S-11) (S-10) [9] Shield Box (S-9) Shield Plate (S-12) (S-12) (S-12) (S-7) (S-12) (S-7) (S-8) (S-8) [7] Power Supply CBA (S-7) (S-8) (S-7) [6] Chassis Bracket Fig. D2 A73F0DC...
  • Page 14 [15] Panel Holder (S-16) (S-17) (S-16) [11] Jack Holder (A) [12] Jack CBA (S-13) (S-16) (S-14) Desolder (S-14) (S-15) (S-17) [14] Junction CBA (S-16) [13] Inverter CBA (S-15) (S-15) (S-15) (S-15) Fig. D3 A73F0DC...
  • Page 15 [20] Front Cabinet [17] LCD Module Assembly [19] Speaker (S-21) (S-21) (S-20) (S-19) [18] IR Sensor Shield Plate (S-18) (S-21) (S-21) [19] Speaker (S-18) (S-18) [16] T-CON CBA (S-19) Fig. D4 A73F0DC...
  • Page 16 TV Cable Wiring Diagram To LCD Module Jack CBA Assembly T-CON CBA CN7001 CN9002 CN9001 CN9005 CN9003 Function CBA CN102 To LCD Module Assembly Digital Main Junction CBA Unit Inverter CBA CN3501 CN552 CN1050 CN3302 CL552A CN3802 CN1100 CL552B CN1150 CN4501 CN4502 CN4503 CN1200 Power Supply CBA...

  • Page 17: How To Initialize The Lcd Television

    HOW TO INITIALIZE THE LCD TELEVISION 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. - To cancel the service mode, press [STANDBY- ON] button on the remote control.

  • 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 BUTTON BUTTON DATA DATA ITEM (on the remote ITEM (on the remote VALUE VALUE control) control) -] → [5] DG(C/D/S 1) -] → [6] DB(C/D/S 1) -] → [7] CLR-R SBR(C/D/S 1) [SETUP(YUV)] → [4] YUV D4 -] → [9] CLR-B SBB(C/D/S 1) -] →...
  • Page 20 2. Purity Check Mode 3. Flicker Adjustment This mode cycles through full-screen displays of red, *This adjustment is required when reparing T-CON green, blue, and white to check for non-active pixels. CBA. 1. Enter the Service mode. Test Point Adj. Point 2.

  • Page 21: White Balance Adjustment

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

  • Page 22: Block Diagrams

    BLOCK DIAGRAMS System Control Block Diagram A73F0BLS...
  • Page 23 Video Block Diagram A73F0BLV...
  • Page 24 Audio-1 Block Diagram A73F0BLA1...
  • Page 25 Audio-2 Block Diagram A73F0BLA2...
  • Page 26 Digital Signal Process Block Diagram A73F0BLD...
  • Page 27 Inverter Block Diagram A73F0BLINV...
  • Page 28 Power Supply Block Diagram A73F0BLP...
  • Page 29 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 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 (F501) 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 Power Supply 1/3 Schematic Diagram NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal. VOLTAGE CHART CN301 Pin No. Voltage 12.1 12.1 15.9 32.1 A73F0SCP1...
  • Page 32 Power Supply 2/3 Schematic Diagram VOLTAGE CHART CN302 Pin No. Voltage A73F0SCP2...
  • Page 33 Power Supply 3/3 Schematic Diagram VOLTAGE CHART CN303 Pin No. Voltage A73F0SCP3...
  • Page 34 Inverter & Junction Schematic Diagram VOLTAGE CHART CN552 CAUTION ! Pin No. Voltage Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. CAUTION ! NOTE: For continued protection against fire hazard, If Main Fuse (F501) is blown , check to see that all components in the power supply The voltage for parts in hot circuit is measured using circuit are not defective before you connect the AC plug to the AC power supply.
  • Page 35 Jack 1/2 Schematic Diagram A73F0SCJ1...
  • Page 36 Jack 2/2 Schematic Diagram A73F0SCJ2...
  • Page 37 Function Schematic Diagram VOLTAGE CHART CN102 Pin No. Voltage A73F0SCF...
  • Page 38 IR Sensor Schematic Diagram 8-10 A73F0SCIR...
  • Page 39 Digital Main 1/6 Schematic Diagram 8-11 A73F0SCD1...
  • Page 40 Digital Main 2/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3501. IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section. 8-12 A73F0SCD2...
  • Page 41 Digital Main 3/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3501. IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section. 8-13 A73F0SCD3...
  • Page 42 Digital Main 4/6 Schematic Diagram 8-14 A73F0SCD4...
  • Page 43 Digital Main 5/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3501. IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section. 8-15 A73F0SCD5...
  • Page 44 Digital Main 6/6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3501. IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section. 8-16 A73F0SCD6...
  • Page 45 Power Supply CBA Top View Because a hot chassis ground is present in the power NOTE: supply circuit, an isolation transformer must be used. The voltage for parts in hot circuit is measured using Also, in order to have the ability to increase the input hot GND as a common terminal.
  • Page 46 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 circuit, 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 47 Jack CBA Top View 8-19 BA73F0F01032...
  • Page 48 Jack CBA Bottom View PIN 20 OF CN7001 PIN 18 OF CN7001 PIN 16 OF CN7001 PIN 14 OF CN7001 PIN 12 OF CN7001 PIN 10 OF CN7001 PIN 8 OF CN7001 8-20 BA73F0F01032...
  • Page 49 Inverter CBA Top View CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. CAUTION ! Because a hot chassis ground is present in the power If Main Fuse (F501) is blown , check to see that all components in the power supply For continued protection against fire hazard, supply circuit, an isolation transformer must be used.
  • Page 50 Inverter CBA Bottom View CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. CAUTION ! Because a hot chassis ground is present in the power If Main Fuse (F501) is blown , check to see that all components in the power supply For continued protection against fire hazard, supply circuit, an isolation transformer must be used.
  • Page 51 Function CBA Top View Function CBA Bottom View 8-23 BA73F0F01022-2...
  • Page 52 IR Sensor CBA Top View Junction CBA Top & Bottom View BA73F0F01042 IR Sensor CBA Bottom View BA73F0F01022-3 8-24...
  • Page 53 WAVEFORMS WF1 ~ WF3 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 10 of CN7001 Pin 12 of CN7001 (VIDEO IN) (S-VIDEO IN) 20µs S-VIDEO-C 0.2V CVBS 0.2V...
  • Page 54 WF4 ~ WF7 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 16 of CN7001 Pin 8 of CN7001 0.5V 20µs AUDIO 0.5V 0.5ms Pin 14 of CN7001 0.5V 20µs Pin 18 of CN7001...

  • Page 55: Wiring Diagrams

    WIRING DIAGRAMS A73F0WI 10-1...

  • Page 56: Exploded Views

    EXPLODED VIEWS Cabinet Function CBA CLN102 LCD Module Assembly SP802 Jack CBA CLN802 CL7001 CL3302 IR Sensor CBA CLN801 T-CON CBA SP801 Digital Main CBA Unit Inverter CBA Junction Power Supply CBA See Electrical Parts List AC501 for parts with this mark. 11-1 A73F0CEX...
  • Page 57 Packing Some Ref. Numbers are not in sequence. X2-1, X2-2, X2-3, X2-4, X2-5, X2-6, X2-7, X2-8, X2-9, X2-10, X2-11, X2-12, X2-13, X2-14, X2-15, Packing Tape X2-16, X2-17 Tape Packing Tape Packing Tape Packing Tape 11-2 A73F0PEX...

  • Page 58: Mechanical Parts List

    MECHANICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. ! have special characteristics important to safety. DOUBLE SEMS SCREW M4X9 + BLACK 0EM408146A L0130UA Before replacing any of these components, read SCREW S-TIGHT M3X8 BIND HEAD+ GBHS3080 carefully the product safety notice in this service HEX SCREW #4-40 7MM...

  • Page 59: Electrical Parts List

    ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. ! have special characteristics important to safety. CERAMIC CAP . E Z 0.01µF/500V CCD2JZP0E103 Before replacing any of these components, read C633 ALUMINUM ELECTROLYTIC CAP 1000µF/25V CE1EMZNTM102 M or carefully the product safety notice in this service...
  • Page 60 Ref. No. Description Part No. Ref. No. Description Part No. ELECTROLYTIC CAP . 100µF/16V M or CE1CMASTM101 ELECTROLYTIC CAP . 4.7µF/25V M or CE1EMASDL4R7 ELECTROLYTIC CAP . 100µF/16V M CE1CMASDL101 ELECTROLYTIC CAP . 4.7µF/25V M or CA1E4R7SP085 C805 ELECTROLYTIC CAP . 10µF/16V M CE1CMASDL100 ALUMINUM ELECTROLYTIC CAP 4.7µF/25V M CE1EMASTM4R7 C806...
  • Page 61 Ref. No. Description Part No. Ref. No. Description Part No. DIODE FR104BB NDL1000FR104 PNP TRANSISTOR KTA1046-Y-U/PF NQEY0KTA1046 D656 PCB JUMPER D0.6-P5.0 JW5.0T Q633 TRANSISTOR KTC3199-GR-AT/P or NQS4KTC3199P D657 ZENER DIODE MTZJT-776.8B QDTB0MTZJ6R8 TRANSISTOR KTC3198-GR-AT/P NQS4KTC3198P D658 ZENER DIODE MTZJT-775.1B QDTB0MTZJ5R1 Q635 TRANSISTOR KTA1267-GR-AT/P or NQS1KTA1267P...
  • Page 62 Ref. No. Description Part No. Ref. No. Description Part No. METAL OXIDE FILM RES. 2W J 1 Ω or CHIP RES. 1/10W J 22k Ω or R620 RN021R0DP004 R681 RRXAJR5Z0223 METAL OXIDE FILM RES. 2W J 1 Ω RES CHIP 1608 1/10W J 22k Ω RN021R0ZU001 RRXA223YF002 CHIP RES.
  • Page 63 Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W J 10k Ω RRXA103YF002 CONNECTORS CHIP RES. 1/10W J 2.7k Ω or R820 RRXAJR5Z0272 CN102 CONNECTOR PRINT OSU S6B-PH-K- J3PHC06JG030 S(LF)(SN) or RES CHIP 1608 1/10W J 2.7k Ω RRXA272YF002 CONNECTOR PRINT OSU C R 440055-6 J344C06AP006...
  • Page 64 Ref. No. Description Part No. Ref. No. Description Part No. CONNECTORS C7104 CHIP CERAMIC CAP . B K 270pF/50V CHD1JK30B271 C7105 CHIP CERAMIC CAP . B K 270pF/50V CHD1JK30B271 CN801 PH CONNECTOR SIDE 2P S2B-PH-K- J3PHC02JG030 S(LF)(SN) C7106 CHIP CERAMIC CAP .(1608) CH J 33pF/50V CHD1JJ3CH330 CN802 PH CONNECTOR SIDE 2P S2B-PH-K-...
  • Page 65 Ref. No. Description Part No. Ref. No. Description Part No. C7725 CHIP CERAMIC CAP . F Z 0.47µF/10V CHD1AZ30F474 DIODE ZENER SMD 015AZ5.6 Y QD1Y015AZ5R6 C7726 CHIP CERAMIC CAP . F Z 0.47µF/10V CHD1AZ30F474 D7023 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 C7727 CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V CHD1EZ30F104...
  • Page 66 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 22k Ω or RES CHIP 1608 1/10W J 75 Ω R7002 RRXAJR5Z0223 RRXA750YF002 RES CHIP 1608 1/10W J 22k Ω CHIP RES. 1/10W J 100 Ω or RRXA223YF002 R7038 RRXAJR5Z0101...
  • Page 67 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 10k Ω or R7204 RRXAJR5Z0103 JK7303 JACK SW DIN PCB L DIN-435C or JYEL040YUQ02 RES CHIP 1608 1/10W J 10k Ω RRXA103YF002 Y/C JACK 1P(SW) DMDC1-01-021 JYEL040RP001 CHIP RES.
  • Page 68 Ref. No. Description Part No. Ref. No. Description Part No. C1003 CHIP CERAMIC CAP .(1608) B K 1000pF/50V CHD1JK30B102 ELECTROLYTIC CAP . 100µF/35V M or CE1GMASTM101 C1004 CHIP CERAMIC CAP .(1608) B K 0.01µF/50V CHD1JK30B103 ELECTROLYTIC CAP . 100µF/35V M CA1G101SP085 C1005 CHIP CERAMIC CAP .(1608) CH J 1000pF/50V...
  • Page 69 Ref. No. Description Part No. Ref. No. Description Part No. D566 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 D1164 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 D567 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 D1165 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148...
  • Page 70 Ref. No. Description Part No. Ref. No. Description Part No. DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 TRANSISTOR 2SA1015-Y(TE2 F T) QQSY2SA1015F D1502 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 RESISTORS RES CARBON 1/2W J 1M Ω or DIODE SWITCHING HSS4148TE-E QDTZ0HSS4148 R503! RCX2105DP006 GLASS GLAZE RES. 1/2W J 1M Ω D1503 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133...
  • Page 71 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 20k Ω or CHIP RES. 1/10W F 750 Ω or R1000 RRXAJR5Z0203 R1066 RRXAFR5H7500 RES CHIP 1608 1/10W J 20k Ω RRXA203YF002 CHIP RES. RMC1/067500FTP or RRXAFR5Z7500 CHIP RES.
  • Page 72 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W F 10k Ω or RES CHIP 1608 1/10W J 20k Ω R1169 RRXAFR5H1002 RRXA203YF002 CHIP RES. 1/10W F 10k Ω or CHIP RES. 1/10W F 750 Ω or RRXAFR5Z1002 R1312 RRXAFR5H7500...
  • Page 73 JUNCTION CBA Ref. No. Description Part No. CHIP RES. 1/10W J 5.1k Ω or R1701 RRXAJR5Z0512 Ref. No. Description Part No. RES CHIP 1608 1/10W J 5.1k Ω RRXA512YF002 JUNCTION CBA ---------- CHIP RES. 1/10W J 4.7k Ω or R1702 RRXAJR5Z0472 Consists of the following: RES CHIP 1608 1/10W J 4.7k Ω...
  • Page 74 LC5-D32BB A73F0EP 2007-11-16...

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