Sylvania 6615LCT Service Manual
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Sylvania 6615LCT Service Manual

Sylvania 6615LCT Service Manual

15″ color lcd television
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SERVICE MANUAL
Model 6615LCT and 6615LG have A version and non-A version types.
This service manual is for the 6615LCT and 6615LG non-A verion models.
For the A version models, suffix A is added to the model number as
6615LCT A and 6615LG A on the rating label, and for the non-A version
models, suffix A is not added to the model number.
Refer to the rating label on the back of the unit to make sure model types.
15" COLOR LCD
TELEVISION
6615LCT
15" COLOR LCD
TELEVISION
6615LG

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Summary of Contents for Sylvania 6615LCT

  • Page 1 This service manual is for the 6615LCT and 6615LG non-A verion models. For the A version models, suffix A is added to the model number as 6615LCT A and 6615LG A on the rating label, and for the non-A version models, suffix A is not added to the model number.

  • Page 2: Table Of Contents

    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: 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.

  • 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 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 6 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 7 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 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: Top View Bottom View 1.
  • Page 9 3. The flat pack-IC on the CBA is affixed with glue, so With Soldering Iron: be careful not to break or damage the foil of each 1. Using desoldering braid, remove the solder from pin or the solder lands under the IC when all pins of the flat pack-IC.
  • Page 10 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 11 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 12: Cabinet Disassembly Instructions

    CABINET DISASSEMBLY INSTRUCTIONS [ 6615LCT ] Removal Step/ Remove/*Unhook/ 1. Disassembly Flowchart Loc. Part Fig. Unlock/Release/ Note Unplug/Unclamp/ This flowchart indicates the disassembly steps for the Desolder cabinet parts, and the CBA in order to gain access to item(s) to be serviced. When reassembling, follow the...
  • Page 13 [1] Rear Cabinet Fig. D1 [8] Front Cabinet [6] Speaker [5] Function Speaker Holders [3] Main CBA [7] IR Sensor [6] Speaker Speaker Holders [4] LCD Module [2] Jack Holder Fig. D2 L2500_01DC...
  • Page 14 TV Cable Wiring Diagram Function CBA CLN104 To LCD Module Main CBA CN1205 CN1207 CN1206 CN1201 CN401 To LCD Module CN403 CN802 To Speaker CN801 CN1202 IR Sensor CBA CLN105 To Speaker Fig. D3 L2500_01DC...
  • Page 15 [ 6615LG ] 1. Disassembly Flowchart Removal Step/ This flowchart indicates the disassembly steps for the Remove/*Unhook/ 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 [1] Rear Cabinet [2] Tilt Stand Assembly Fig. D1 [10] Front Cabinet [7] Function [8] Speaker S-10 Speaker Holders S-11 [9] IR Sensor [4] Main CBA [8] Speaker Speaker S-10 Holders [6] LCD Module [5] Tilt Stand Holder [3] Jack Holder Fig.
  • Page 17 [11] Stand Cover [12] Arm Holder S-13 [13] Sheet R [14] Arm Assembly S-12 [13] Sheet L S-12 Fig. D3 L2500_01DC...
  • Page 18 TV Cable Wiring Diagram Function CBA CLN104 To LCD Module Main CBA CN1205 CN1207 CN1206 CN1201 CN401 To LCD Module CN403 CN802 To Speaker CN801 CN1202 IR Sensor CBA CLN105 To Speaker Fig. D4 L2500_01DC...

  • Page 19: 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 20 3. If Flicker Adjustment is not fit, the screen become Button Data the following. Item (on the service Value remote control) D2-BRT VCOM D2-CNT D2-CLR-R [MENU] → [5] D2-CLR-B D2-TNT D2-SHR D3-BRT D3-CNT D3-CLR-R FLASH (Go and Off) [MENU] → [6] D3-CLR-B 4.
  • Page 21 The following adjustment normally are not 5. [RF/VIDEO1] attempted in the field. Only when replacing the When “x” value and “y” value are not within LCD Panel then adjust as a preparation. specification, adjust “DB (C/D1)” or “DR (C/D1)”. Refer to “1. Initial Setting.” 3.

  • Page 22: How To Initialize The Lcd Television

    HOW TO INITIALIZE THE LCD TELEVISION How to initialize the LCD television: 1. Turn the power on. (Use main power on the TV unit.) 2. To enter the service mode, press [SLEEP] button on the service remote control unit. - To cancel the service mode, press [POWER] button on the remote control.

  • Page 23: Block Diagrams

    BLOCK DIAGRAMS System Control Block Diagram L2500BLS...
  • Page 24 IF/Video Block Diagram L2500BLIF...
  • Page 25 Audio Block Diagram L2500BLA...
  • Page 26 LCD Block Diagram L2500BLLCD...
  • Page 27 Power Supply Block Diagram L2500BLP...
  • Page 28 LCD Backlight Block Diagram L2500BLLB...

  • 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: 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 31 Main 1/5 Schematic Diagram L2500SCM1...
  • Page 32 Main 2/5 Schematic Diagram L2500SCM2...
  • Page 33 Main 3/5 Schematic Diagram L2500SCM3...
  • Page 34 Main 4/5 Schematic Diagram L2500SCM4...
  • Page 35 Main 5/5 Schematic Diagram 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 36 Function Schematic Diagram L2500SCF...
  • Page 37 IR Sensor Schematic Diagram L2500SCIR...
  • Page 38 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, Also, in order to have the ability to increase the input If Main Fuse (F601) is blown , check to see that all components in the power supply...
  • Page 39 Main CBA Bottom View CAUTION ! 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 replace only with same type 4 A, 125V fuse.
  • Page 40 Function CBA Top View IR Sensor CBA IR Sensor CBA Top View Bottom View BL2500F01011-3 Function CBA Bottom View BL2500F01011-2 8-12...

  • Page 41: Waveforms

    WAVEFORMS WF1 ~ WF12 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) CLKH STH1 S-VIDEO-C 1DIV: 1.0V 10 s 1DIV: 1.0V 10 s 1DIV: 200mV 20 s Pin 2 of CN1206 Pin 26 of CN1206 Pin 52 of IC1202...

  • Page 42: Wiring Diagram

    WIRING DIAGRAM 10-1 L2500WI...

  • Page 43: Exploded Views

    EXPLODED VIEWS Cabinet [ 6615LCT ] Function CBA SP802 CLN802 CL1206 CL1207 CL1205 IR Sensor CBA SP801 CLN801 Main CBA LCD1 See Electrical Parts List for parts with this mark. AC601 11-1 L2500_01CEX...
  • Page 44 [ 6615LG ] Function CBA SP802 CLN802 IR Sensor CBA CL1206 CL1207 CL1205 SP801 A9-1 CLN801 Main CBA LCD1 A9-4 A9-4 A9-2 A9-5 A9-6 A9-3 See Electrical Parts List for parts with this mark. A9-5 AC601 A9-7 A9-4 A9-5 11-2 L2500_01CEX...
  • Page 45 Packing [ 6615LCT ] Some Ref. Numbers are not in sequence. Tape Packing Tape Packing Tape Packing Tape Packing Tape 11-3 L2500_01PEX...
  • Page 46 [ 6615LG ] Some Ref. Numbers are not in sequence. Tape Packing Tape Packing Tape Packing Tape Packing Tape 11-4 L2500_01PEX...

  • Page 47: Mechanical Parts List

    SP802 SPEAKER S0407F10 DSD0807XQ002 Comparison Chart of Models and Marks PACKING CARTON L3119UK 1EM423012A Model Mark CARTON L3124UQ 1EM423216A 6615LCT STYROFOAM TOP L2500UA 1EM021229 6615LG STYROFOAM TOP L3124UQ 1EM021370 STYROFOAM BOTTOM L2500UA 1EM021231 STYROFOAM BOTTOM L3124UQ 1EM121515 Ref. No. Mark Description Part No.

  • Page 48: Electrical Parts List

    ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. # have special characteristics important to safety. C423 CAP CHIP 5pF 3KV C XC CA3F5R05M016 Before replacing any of these components, read C425 CHIP CERAMIC CAP .(1608) B K 0.01µF/50V CHD1JK30B103 carefully the product safety notice in this service C426...
  • Page 49 Ref. No. Description Part No. Ref. No. Description Part No. C704 ELECTROLYTIC CAP . 47µF/16V M CE1CMASDL470 C1216 CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V CHD1EZ30F104 C707 CHIP CERAMIC CAP .(1608) CH J 1000pF/50V CHD1JJ3CH102 C1217 CHIP CERAMIC CAP .(1608) B K 0.01µF/50V CHD1JK30B103 C708 CHIP CERAMIC CAP .(1608) CH J 100pF/50V...
  • Page 50 Ref. No. Description Part No. Ref. No. Description Part No. CN1205 CONNECTOR PRINT MES G/28/R/28FMN- JCFNG28JG021 D616# ZENER DIODE MTZJT-7733B QDTB00MTZJ33 STK-A(L D620 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 CN1206 CONNECTOR PRINT MES G/28/R/28FMN- JCFNG28JG021 D624# ZENER DIODE MTZJT-7733B QDTB00MTZJ33 STK-A(L D631# SCHOTTKY BARRIER DIODE ERC84-009 QDLZERC84009 CN1207...
  • Page 51 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 2.2k Ω IC1205 IC EEPROM(32K) BR24L32F-WE2 QSZBA0TRM067 RRXAJR5Z0222 CHIP RES. 1/10W J 820k Ω IC1207 IC TL3472CDR NSZBA0TTY115 RRXAJR5Z0824 CHIP RES.(1608) 1/10W 0 Ω IC1211 IC RESET BU4223G-TR 5PIN QSZBA0TRM103 RRXAZR5Z0000 CARBON RES.
  • Page 52 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 10k Ω R507 PCB JUMPER D0.6-P5.0 JW5.0T R708 RRXAJR5Z0103 CARBON RES. 1/4W J 100 Ω CHIP RES. 1/10W J 10k Ω R509 RCX4JATZ0101 R709 RRXAJR5Z0103 CARBON RES. 1/4W J 4.7k Ω CHIP RES.(1608) 1/10W 0 Ω...
  • Page 53 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 22k Ω CHIP RES. 1/10W J 56 Ω R834 RRXAJR5Z0223 R1309 RRXAJR5Z0560 CHIP RES. 1/10W J 1k Ω CHIP RES. 1/10W J 56 Ω R837 RRXAJR5Z0102 R1310 RRXAJR5Z0560 CHIP RES.
  • Page 54 Ref. No. Description Part No. Ref. No. Description Part No. MISCELLANEOUS SW111 TACT SWITCH SKQSAB SST0101AL038 MISCELLANEOUS AC601# AC CORD LP-11W&PT218P-K90A&S WAC0172LW020 SHIELD BOX TOP L2500UA 1EM321728 CLN104 WIRE ASSEMBLY 4PIN/160MM/AWG26 WX1L2500-002 CHIP RES.(1608) 1/10W 0 Ω POW HEAT SINK PKG ASSEMBLY L3201UB 1EM420650 JS121 RRXAZR5Z0000...
  • Page 55 6615LCT/6615LG L2500UA/L2501UB 2006-05-29...

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