Sylvania 6626LDG Service Manual
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Sylvania 6626LDG Service Manual

Sylvania 6626LDG Service Manual

26'' lcd tv/dvd
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SERVICE MANUAL
26" LCD TV/DVD
6626LDG

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  • Page 1 SERVICE MANUAL 26″ LCD TV/DVD 6626LDG...
  • Page 2 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: Table Of Contents

    TABLE OF CONTENTS Specifications ................1-1 Laser Beam Safety Precautions .

  • Page 4: Specifications

    SPECIFICATIONS < LCD TV Section > < 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...
  • Page 5 <DVD Section> Description Condition Unit Nominal Limit 1. Horizontal Resolution (TDV-540 TIT.2 CHP.16) Line 2. Video S/N at CN3400 (TDV-540 TIT.2 CHP.6) 3. S/N Chroma at CN3400 (TDV-540 TIT.2 CHP.17) 4. Audio Distortion (LPCM 48 kHz, W/LPF) 0.03 0.07 (PTD 1-NOR TIT.1 CHP.1) L, 20 Hz 5.

  • Page 6: Laser Beam Safety Precautions

    LASER BEAM SAFETY PRECAUTIONS This DVD player uses a pickup that emits a laser beam. Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin. The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30 cm away from the pickup lens when the diode is turned on.

  • Page 7: 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 8 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 9 Precautions during Servicing A. Parts identified by the # symbol are critical for L. When connecting or disconnecting the internal safety. connectors, first, disconnect the AC plug from the Replace only with part number specified. AC supply outlet. B. In addition to safety, other parts and assemblies M.
  • Page 10 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.

  • Page 11: Standard Notes For Servicing

    STANDARD NOTES FOR SERVICING Circuit Board Indications Pb (Lead) Free Solder 1. The output pin of the 3 pin Regulator ICs is Pb free mark will be found on PCBs which use Pb indicated as shown. free solder. (Refer to figure.) For PCBs with Pb free mark, be sure to use Pb free solder.
  • Page 12 around the flat pack-IC to protect other parts from With Soldering Iron: damage. (Fig. S-1-2) 1. Using desoldering braid, remove the solder from 3. The flat pack-IC on the CBA is affixed with glue, so all pins of the flat pack-IC. When you use solder be careful not to break or damage the foil of each flux which is applied to all pins of the flat pack-IC, pin or the solder lands under the IC when...
  • Page 13 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 14 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.

  • Page 15: 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 16 Reference Notes Note: (1) Order of steps in procedure. When reassembling, 1. CAUTION 1: Electrostatic breakdown of the laser follow the steps in reverse order. These numbers diode in the optical system block may occur as a are also used as the Identification (location) No. of potential difference caused by electrostatic charge parts in figures.
  • Page 17 [5] DVD Cover [6] Function CBA [4] Rear Cabinet [3] Stand Cover [2] Stand Hinge [1] Stand Base Plate Fig. D1 L4350DC...
  • Page 18 S-10 [7] DVD Main CBA Unit DVD Holder(L) [8] DVD Mechanism DVD Holder(R) Remove two screws A, then short the three short lands by soldering as shown in View for A. Chassis Cover Screws A Pin A Either of two places View for A FPC Cable Hole A...
  • Page 19 [11] Jack Holder(A) [12] Chassis Bracket S-13 S-14 S-14 S-12 [10] Shield Box S-14 S-14 S-12 S-14 [9] Jack Holder(D) S-11 Fig. D3 [15] PCB Holder S-18 [16] DVD Holder(S) S-17 S-15 S-17 [13] Main CBA [14] Digital Main CBA Unit S-16 Fig.
  • Page 20 [22] Front Cabinet S-20 [20] Speaker (R) S-19 S-20 S-19 S-22 [17] Panel Holder S-19 S-21 [19] LED CBA S-23 S-19 [21] Speaker (L) [18] LCD Module S-20 S-19 S-20 S-19 Fig. D5 L4350DC...
  • Page 21 TV Cable Wiring Diagram DVD Mechanism DVD MAIN CBA Unit CN201 CN301 CN801 CN601 CN401 To LCD Module Function CBA CN101 To LCD Module Main CBA Digital Main CBA Unit CN251 CN1121 CN252 CN1505 CN111 CN1111 CN1112 CN112 CN911 CN1801 CN113 CN1116 CN1113...

  • Page 22: 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 23 1. Purity Check Mode The following adjustment normally are not attempted in the field. Only when replacing the This mode cycles through full-screen displays of red, LCD Panel then adjust as a preparation. green, blue, and white to check for non-active pixels. 2.
  • Page 24 3. Auto Calibration Purpose: To bring the color adjustment of each component into standard alignment. Symptom of Misadjustment: If this adjustment is incorrect, component signals do not reproduce the corresponding color. 1. Input white raster signal (10%=10 IRE, 100%=100 IRE) from Component 1 Y jack. 2.

  • Page 25: How To Initialize The Lcd Tv/Dvd

    HOW TO INITIALIZE THE LCD TV/DVD To put the program back at the factory-default, initialize the LCD TV/DVD as the following procedure. < DVD Section > < LCD TV Section > 1. Press [1], [2], [3], [4], and [DISPLAY] buttons on the 1.

  • Page 26: Firmware Renewal Mode

    FIRMWARE RENEWAL MODE 1. Turn the power on and press [EJECT] button on the 5. After programming is finished, the disc will be remote control unit to put the LCD TV/DVD into ejected automatically. Fig. e appears on the screen DVD mode.

  • Page 27: Block Diagrams

    BLOCK DIAGRAMS < LCD TV Section > System Control Block Diagram L4350BLS...
  • Page 28 Video Block Diagram L4350BLV...
  • Page 29 Digital Signal Process Block Diagram L4350BLD...
  • Page 30 Audio Block Diagram L4350BLA...
  • Page 31 Power Supply Block Diagram L4350BLP...
  • Page 32 BLOCK DIAGRAMS < DVD Section > System Control / Servo Block Diagram L4350BLSD...
  • Page 33 DVD Digital Signal Process Block Diagram L4350BLDD...

  • Page 34: 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 35 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 36 Main 1/5 Schematic Diagram < LCD TV Section > VOLTAGE CHART CN112 Pin No. Voltage CN114 Pin No. Voltage L4350SCM1 10-3...
  • Page 37 Main 2/5 Schematic Diagram < LCD TV Section > VOLTAGE CHART CN113 Pin No. Voltage L4350SCM2 10-4...
  • Page 38 Main 3/5 Schematic Diagram < LCD TV Section > VOLTAGE CHART CN111 Pin No. Voltage 32.7 L4350SCM3 10-5...
  • Page 39 Main 4/5 Schematic Diagram < LCD TV Section > VOLTAGE CHART CN251 Pin No. Voltage 24.3 24.3 24.3 24.3 24.3 CN252 Pin No. Voltage 24.3 24.3 24.3 24.3 24.3 L4350SCM4 10-6...
  • Page 40 Main 5/5 Schematic Diagram < LCD TV Section > CAUTION ! NOTE: Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. CAUTION ! : For continued protection against risk of fire, If Main Fuse (F601) is blown , check to see that all components in the power supply The voltage for parts in hot circuit is measured using replace only with same type 4 A, 125V fuse.
  • Page 41 Function Schematic Diagram < LCD TV Section > VOLTAGE CHART CN101 Pin No. Voltage L4350SCF 10-8...
  • Page 42 LED Schematic Diagram < LCD TV Section > L4350SCL 10-9...
  • Page 43 Digital Main 1/9 Schematic Diagram < LCD TV Section > L4350SCD1 10-10...
  • Page 44 Digital Main 2/9 Schematic Diagram < LCD TV Section > L4350SCD2 10-11...
  • Page 45 Digital Main 3/9 Schematic Diagram < LCD TV Section > 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1504. IC1504 is divided into four and shown as IC1504 (1/4) ~ IC1504 (4/4) in this Digital Main Schematic Diagram Section. L4350SCD3 10-12...
  • Page 46 Digital Main 4/9 Schematic Diagram < LCD TV Section > 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1504. IC1504 is divided into four and shown as IC1504 (1/4) ~ IC1504 (4/4) in this Digital Main Schematic Diagram Section. L4350SCD4 10-13...
  • Page 47 Digital Main 5/9 Schematic Diagram < LCD TV Section > 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1504. IC1504 is divided into four and shown as IC1504 (1/4) ~ IC1504 (4/4) in this Digital Main Schematic Diagram Section. 10-14 L4350SCD5...
  • Page 48 Digital Main 6/9 Schematic Diagram < LCD TV Section > L4350SCD6 10-15...
  • Page 49 Digital Main 7/9 Schematic Diagram < LCD TV Section > 1 NOTE: The order of pins shown in this diagram is different from that of actual IC1504. IC1504 is divided into four and shown as IC1504 (1/4) ~ IC1504 (4/4) in this Digital Main Schematic Diagram Section. 10-16 L4350SCD7...
  • Page 50 Digital Main 8/9 Schematic Diagram < LCD TV Section > 10-17 L4350SCD8...
  • Page 51 Digital Main 9/9 Schematic Diagram < LCD TV Section > 10-18 L4350SCD9...
  • Page 52 DVD Main 1/3 Schematic Diagram < DVD Section > 1 NOTE: Either IC461 or IC462 is used for DVD MAIN CBA UNIT. L4350SCDT1 10-19...
  • Page 53 DVD Main 2/3 Schematic Diagram < DVD Section > L4350SCDT2 10-20...
  • Page 54 DVD Main 3/3 Schematic Diagram < DVD Section > L4350SCDT3 10-21...
  • Page 55 Main CBA Top View 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 circuit, an isolation transformer must be used. CAUTION ! : For continued protection against risk of fire, 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...
  • Page 56 Main CBA Bottom View 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 circuit, an isolation transformer must be used. CAUTION ! : For continued protection against risk of fire, 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...
  • Page 57 Function CBA Top View Function CBA Bottom View BL4300F01012-2 10-24...
  • Page 58 LED CBA Top View LED CBA Bottom View 10-25 BL4300F01012-3...

  • Page 59: Waveforms

    WAVEFORMS < LCD TV SECTION > WF1 ~ WF7 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) Pin 2 of CN113 Pin 13 of CN114 CVBS 0.2V 20µs VIDEO-Pb...
  • Page 60 WAVEFORMS < DVD SECTION > WF8 ~ WF12 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) DVD Video (Power on (Stop) MODE) Pin 1 of CN1801 Pin 7 of CN1801 WF11 DVD-AUDIO(R)

  • Page 61: Wiring Diagram

    WIRING DIAGRAM < LCD TV SECTION > 12-1 L4350WI...
  • Page 62 WIRING DIAGRAM < DVD SECTION > DVD-ON+5V 20 CD/DVD 19 D 18 A 17 DVD-Y C 16 B 15 DVD-C NU 14 VREF 13 DVD-AUDIO(L) NU 12 DVD-AUDIO-MUTE GND 11 DVD-AUDIO(R) CD-LD 10 GND(LD) 9 DVD-SPDIF DVD-LD 8 PD-MONI 7 GND(DVD-PD) 6 GND(CD-PD) 5 TS(-) 4...

  • Page 63: System Control Timing Charts

    SYSTEM CONTROL TIMING CHARTS Disc In ~ Play/Play ~ Disc Out Disc Disc Disc Disc Play Rotation Stop 3.3V Disc IN (TL221) 1.65V Sled Drive (TP303) 1.65V Disc Drive (TP301) 1.65V Focus Drive (TP304) Tracking Drive 1.65V (TP302) 13-1 L2550TI...

  • Page 64: Lead Identifications

    LEAD IDENTIFICATIONS PQ018EF01SZH KRC103M-AT/P 2SA950-O(TE2 F T) PQ033EF01SZH 2SC2120-O(TE2 F T) KTA1267-GR-AT/P PQ070XF01SZH KTC3199-GR-AT/P 1: Vin 2: Vo 3: GND E C B E C B 4: Vc 1 2 3 4 CD4051BNSR AN17805A PQ035ZN1HZPH 1: Vin 2: Vo 3: GND 1 2 3 4: Vc LD1117V...

  • Page 65: Exploded Views

    EXPLODED VIEWS Cabinet Function CBA SP802 LCD1 CLN803 CLN804 LED CBA CLN251 SP801 CLN252 DVD Main CBA Unit AC601 L3-10 CL911 CL1801 Main CBA See Electrical Parts List Digital Main CBA Unit for parts with this mark. 15-1 L4350CEX...
  • Page 66 Packing Packing Tape Some Ref. Numbers are not in sequence. Packing Tape Packing Tape Tape Packing Tape Packing Tape Packing Tape 15-2 L4350PEX...

  • Page 67: Mechanical Parts List

    ---------- Ref. No. Description Part No. STAND SHEET L4300UA 1EM423161 FRONT CABINET L4350UA 1EM021503 HOLD PAD L4300UA 1EM322328A BRAND BADGE L T9000UA~SYLVANIA~ 0EM409016 ACCESSORIES CONTROL PLATE L4350UA 1EM322346 BAG POLYETHYLENE 235X365XT0.03 0EM408420A REAR CABINET L4350UA 1EM021516 OWNERS MANUAL L4350UA 1EMN22057...

  • Page 68: Electrical Parts List

    ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. # have special characteristics important to safety. C503 ALUMINUM ELECTROLYTIC CAP 4700µF/35V CE1GMZNTM472 Before replacing any of these components, read C504 ELECTROLYTIC CAP 1µF/50V M CA1J1R0SP085 carefully the product safety notice in this service C505...
  • Page 69 Ref. No. Description Part No. Ref. No. Description Part No. C615 FILM CAP .(P) 0.068µF/50V J CA1J683MS029 C811 ELECTROLYTIC CAP . 100µF/10V M CA1A101SP085 C620 CHIP CERAMIC CAP . F Z 1µF/10V CHD1AZ30F105 C813 ELECTROLYTIC CAP 1µF/50V M CA1J1R0SP085 C633 FILM CAP .(P) 0.033µF/50V J CA1J333MS029 C814...
  • Page 70 Ref. No. Description Part No. Ref. No. Description Part No. D558 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 L532 POWER INDUCTOR RCR1616-470M LLC470MSF009 D559 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 L533 RADIAL TYPE CHOKE COIL CW68-470K- LLBD00PKV023 841040NP D561 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 L534 INDUCTOR 15µH- K-5FT LLARKBSTU150 D563 DIODE FR104-B...
  • Page 71 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 5.6k Ω CHIP RES. 1/10W J 22k Ω R406 RRXAJR5Z0562 R511 RRXAJR5Z0223 CHIP RES. 1/10W J 47k Ω CHIP RES. 1/10W F 2.2k Ω R407 RRXAJR5Z0473 R512 RRXAFR5H2201 CHIP RES.
  • Page 72 Ref. No. Description Part No. Ref. No. Description Part No. CARBON RES. 1/4W J 560k Ω CARBON RES. 1/4W J 22 Ω R609 RCX4JATZ0564 R746 RCX4JATZ0220 CHIP RES.(1608) 1/10W F 75 Ω R611 PCB JUMPER D0.6-P5.0 JW5.0T R747 RRXAFR5H75R0 CARBON RES. 1/4W J 330k Ω CHIP RES.(1608) 1/10W 0 Ω...
  • Page 73 Ref. No. Description Part No. Ref. No. Description Part No. CARBON RES. 1/4W G 220 Ω CHIP RES. 1/10W J 10k Ω R913 RCX4GATZ0221 R103 RRXAJR5Z0103 CHIP RES. 1/10W F 4.7k Ω R914 RRXAFR5H4701 R104 PCB JUMPER D0.6-P5.0 JW5.0T CHIP RES. 1/10W F 8.2k Ω CHIP RES.
  • Page 74 6626LDG L4350UA 2006-11-09...

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