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Sylvania 6626LCT, Service Manual

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SERVICE MANUAL

26

″

 COLOR LCD TELEVISION

6626LCT/6626LG

Summary of Contents for 6626LCT

Page 1: ...SERVICE MANUAL 26 COLOR LCD TELEVISION 6626LCT 6626LG...

Page 2: ...service might be done or of the possible hazardous consequences of each way Consequently Funai has not undertaken any such broad evaluation Accordingly a servicer who uses a service procedure or tool...

Page 3: ...nal Limit 1 Intermediate Freq Picture Sound MHz MHz 45 75 41 25 2 Color Killer Sens CH 2 CH 10 CH 55 dB V dB V dB V 17 17 17 23 23 23 3 AFT Pull In Range 10 mV input MHz 2 4 2 1 Description Condition...

Page 4: ...m any AC source connect an electrical jumper across the two AC plug prongs Place the instrument AC switch in the on position Connect one lead of an ohmmeter to the AC plug prongs tied together and tou...

Page 5: ...is not isolated from the AC power line The two ground systems are electrically separated by insulation material that must not be defeated or altered 5 Observe original lead dress Take extra care to as...

Page 6: ...s H When a power cord has been replaced check that 5 6 kg of force in any direction will not loosen it I Also check areas surrounding repaired locations J Use care that foreign objects screws solder d...

Page 7: ...exposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified value in the table below...

Page 8: ...he Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while applying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat p...

Page 9: ...one using a sharp pin or wire to which solder will not adhere iron wire When heating the pins use a fine tip soldering iron or a hot air desoldering machine Fig S 1 4 3 Bottom of the flat pack IC is...

Page 10: ...Fig S 1 6 Note When using a soldering iron care must be taken to ensure that the flat pack IC is not being held by glue When the flat pack IC is removed from the CBA handle it gently because it may b...

Page 11: ...d to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1 M on the workbench or other surfac...

Page 12: ...Reference Notes in the Table Step Loc No Part Removal Fig No Remove Unhook Unlock Release Unplug Unclamp Desolder Note 1 Stand Base Plate D1 4 S 1 6 S 2 5 S 3 2 Stand Hinge D1 3 Stand Cover D1 4 Rear...

Page 13: ...4 2 L4300DC 4 Rear Cabinet 5 Function CBA 3 Stand Cover 2 Stand Hinge 1 Stand Base Plate S 5 S 6 S 1 S 2 S 2 S 2 S 3 S 3 S 4 S 4 S 4 S 4 S 4 S 4 S 4 Fig D1...

Page 14: ...4 3 L4300DC 7 Jack Holder D 9 Shield Box 8 Jack Holder A 6 Chassis Bracket S 7 S 8 S 9 S 10 S 10 N 1 S 7 S 7 S 7 Fig D2 10 Main CBA 12 PCB Holder 11 Digital Main CBA Unit S 11 S 12 S 13 S 13 Fig D3...

Page 15: ...4 4 L4300DC 13 Panel Holder 13 Panel Holder 14 LCD Module 15 LED CBA 17 Speaker L 16 Speaker R 18 Front Cabinet S 14 S 15 S 14 S 14 S 14 S 15 S 15 S 16 S 17 S 18 S 15 S 14 S 14 Fig D4...

Page 16: ...Wiring Diagram CN111 CN1111 CN1112 CN1116 CN1113 CN112 CN113 CN114 CN804 Function CBA LED CBA Main CBA Digital Main CBA Unit To Speaker CN101 CN151 CN251 Fig D5 CN1121 To LCD Module CN1505 CN252 CN151...

Page 17: ...attern Gray Scale Monoscope Multi Burst 3 Remote control unit Part No N0105UD or N0127UD 4 Color Analyzer How to make Service remote control unit 1 Prepare normal remote control unit Part No N0105UD o...

Page 18: ...the CHROMA mode and bring the optical receptor to the center on the LCD Panel surface after zero point calibration as shown above Note The optical receptor must be set perpendicularly to the LCD Pane...

Page 19: ...er the Auto Calibration adjustment mode press 6 button on the service remote control unit 4 To start auto adjustment press CH o button on the service remote control unit In the auto adjustment mode Ca...

Page 20: ...ol unit Refer to ELECTRICAL ADJUSTMENT INSTRUCTIONS section 3 To enter the service mode press SLEEP button on the service remote control unit To cancel the service mode press TV POWER button on the re...

Page 21: ...D152 BACKLIGHT SW 3 3V TO LCD MODULE TO AUDIO BLOCK DIAGRAM TO AUDIO BLOCK DIAGRAM PROTECT1 VOLUME AMP MUTE AUDIO SW0 AUDIO SW1 AUDIO SW2 AMP MUTE AUDIO SW0 AUDIO SW1 AUDIO SW2 AUDIO MUTE AUDIO MUTE L...

Page 22: ...2 22 VIDEO IN2 7 17 S VIDEO Y IN2 4 20 S VIDEO C IN2 5 19 S VIDEO Y IN1 21 3 S VIDEO C IN1 22 2 VIDEO Y IN1 11 13 VIDEO Pb IN1 13 11 VIDEO Pr IN1 14 10 VIDEO Y IN2 16 8 VIDEO Pb IN2 18 6 VIDEO Pr IN2...

Page 23: ...12 TX2 11 TX3 20 TX3 19 TXCLK 16 TXCLK 15 LVDS TX PLL A D CONVERTER DIGITAL SIGNAL PROCESS DAC OSCLK DAC OSCLK HDMI BCLK HDMI LRCLK HDMI SDATA AD DATA DAC BCLK DAC LRCLK DAC DATA SPDIF AUDIO INTERFAC...

Page 24: ...014 BUFFER Q1013 BUFFER Q1008 BUFFER Q1010 Q1009 BUFFER Q1515 BUFFER AUDIO L 2 19 5 AUDIO R 2 18 6 AUDIO L 1 2 22 AUDIO R 1 3 21 HDMI AUDIO L IN 13 11 HDMI AUDIO R IN 12 12 TUNER AUDIO L 16 8 TUNER AU...

Page 25: ...6 18 LCD 5V 6 7 5V 4 33V 1 STBY 3 3V 2 2 5V 12 13 1 8V 19 IC537 3 3V REG IC535 3 3V REG IC534 5V REG 2 1 Q632 SWITCHING CONTROL TO DIGITAL MAIN CBA UNIT CN1111 PROTECT1 TO SYSTEM CONTROL BLOCK DIAGRAM...

Page 26: ...ings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M 1...

Page 27: ...ended since the drawings were prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list...

Page 28: ...7 0 8 0 1 9 0 1 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 3 4 21 3 2 22 1 1 23 2 3 CN114 1 0 2 3 4 3 3 4 4 1 0 5 3 4 6 0 7 0 8 3 3 9 3 3 10 0 11 1 7 12 0 13 1 7 14 1 6 15 0 16 1 6 17 0 18 1...

Page 29: ...4300SCM2 Main 2 5 Schematic Diagram CN113 1 0 2 1 6 3 0 4 1 7 5 1 7 6 0 7 1 7 8 0 9 0 6 10 0 6 11 0 12 6 0 13 6 0 14 0 15 6 0 16 6 0 17 0 18 6 0 19 5 9 20 0 21 5 3 22 5 4 23 0 VOLTAGE CHART Pin No Vol...

Page 30: ...ain 3 5 Schematic Diagram L4300SCM3 CN111 1 32 7 2 3 4 3 0 4 5 0 5 0 6 5 0 7 5 0 8 0 9 0 10 3 3 11 0 12 2 7 13 2 7 14 0 15 0 16 1 3 17 1 3 18 1 3 19 1 8 20 12 21 0 22 0 23 3 3 VOLTAGE CHART Pin No Vol...

Page 31: ...CM4 Main 4 5 Schematic Diagram CN251 1 24 4 2 24 4 3 24 4 4 24 4 5 24 4 6 0 7 0 8 0 9 0 10 0 11 0 12 2 7 CN252 1 24 4 2 24 4 3 24 4 4 24 4 5 24 4 6 0 7 0 8 0 9 0 10 0 VOLTAGE CHART Pin No Voltage Pin...

Page 32: ...ircuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail NOTE The voltage for parts in hot circuit is m...

Page 33: ...8 8 L4300SCF Function Schematic Diagram CN101 1 0 2 3 4 3 3 4 4 3 4 5 3 4 VOLTAGE CHART Pin No Voltage...

Page 34: ...8 9 L4300SCL LED Schematic Diagram...

Page 35: ...8 10 L4300SCD1 Digital Main 1 8 Schematic Diagram...

Page 36: ...8 11 L4300SCD2 Digital Main 2 8 Schematic Diagram...

Page 37: ...in 3 8 Schematic Diagram 1 NOTE 1 The order of pins shown in this diagram is different from that of actual IC1504 2 IC1504 is divided into four and shown as IC1504 1 4 IC1504 4 4 in this Digital Main...

Page 38: ...in 4 8 Schematic Diagram 1 NOTE 1 The order of pins shown in this diagram is different from that of actual IC1504 2 IC1504 is divided into four and shown as IC1504 1 4 IC1504 4 4 in this Digital Main...

Page 39: ...ematic Diagram L4300SCD5 1 NOTE 1 The order of pins shown in this diagram is different from that of actual IC1504 2 IC1504 is divided into four and shown as IC1504 1 4 IC1504 4 4 in this Digital Main...

Page 40: ...8 15 L4300SCD6 Digital Main 6 8 Schematic Diagram...

Page 41: ...ematic Diagram L4300SCD7 1 NOTE 1 The order of pins shown in this diagram is different from that of actual IC1504 2 IC1504 is divided into four and shown as IC1504 1 4 IC1504 4 4 in this Digital Main...

Page 42: ...8 17 Digital Main 8 8 Schematic Diagram L4300SCD8...

Page 43: ...all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail NOTE The v...

Page 44: ...cuit is used in this unit If Main Fuse F601 is blown 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 Otherwise it m...

Page 45: ...8 20 Function CBA Top View Function CBA Bottom View BL4300F01011 2...

Page 46: ...8 21 LED CBA Top View LED CBA Bottom View BL4300F01011 3...

Page 47: ...orm check points Shown in Schematic Diagram CVBS 0 2V 20 s WF1 Pin 2 of CN113 VIDEO Y 0 2V WF2 Pin 21 of CN114 20 s VIDEO C 0 2V WF3 Pin 22 of CN114 20 s AUDIO 0 1V 0 5ms WF7 Pin 8 of CN151A VIDEO Pr...

Page 48: ...IO L HDMI AUDIO L IN TUNER AUDIO R GND HDMI AUDIO R IN NU GND NU GND S VIDEO C IN2 VIDEO IN2 GND S VIDEO Y IN2 GND GND VIDEO IN1 CN113 AUDIO L 1 AUDIO R 1 CN1116 23 19 21 15 17 22 20 18 16 14 10 12 6...

Page 49: ...5 CLN803 CLN252 CLN804 SP802 SP801 L5 L5 L2 L2 L2 L2 L2 L2 L2 L6 L7 L7 L7 L1 L1 L1 L1 L9 L9 L4 L4 L3 L3 L8 L8 L8 L8 L8 L8 L10 L10 L10 L8 L8 L6 L3 L3 L1 L1 L7 L5 B7 B7 L3 B13 B12 L3 See Electrical Part...

Page 50: ...11 2 L4300PEX Packing S1 S2 S5 S4 Tape Packing Tape Packing Tape Packing Tape Packing Tape Packing Tape Packing Tape S3 S6 X1 X4 X3 Some Ref Numbers are not in sequence X2 X5 FRONT...

Page 51: ...EM401451A B13 GRAND TAPE L4300UA 1EM423095 B16 CLOTH 10X190XT0 3 L0200UA 1EM420019 B18 CLOTH 10X180XT0 5 L0336JG 0EM408827 B19 CLOTH 20X65XT0 5 L0100JA 0EM407914 CLN251 WIRE ASSEMBLY 104 12PIN 105MM A...

Page 52: ...01 F 25V CHD1EZ30F103 C535 ELECTROLYTIC CAP 10 F 50V M CA1J100SP085 C536 ELECTROLYTIC CAP 1000 F 6 3V M CA0K102SP085 C537 ALUMINUM ELECTROLYTIC CAP 4700 F 10V M CE1AMZNTM472 C538 FILM CAP P 0 01 F 50V...

Page 53: ...CONNECTOR 23P TWG P23P A1 J3TWA23TG001 CN113 TWG CONNECTOR 23P TWG P23P A1 J3TWA23TG001 CN114 TWG CONNECTOR 23P TWG P23P A1 J3TWA23TG001 CN151A BOARD IN WIRE 106 10PIN 150MM AWG26 WX1L4300 106 Ref No...

Page 54: ...O TE2 F T QQS02SC2120F Q701 TRANSISTOR KTC3199 GR AT P NQS4KTC3199P Q702 TRANSISTOR KTC3199 GR AT P NQS4KTC3199P Ref No Description Part No Q703 TRANSISTOR KTC3199 GR AT P NQS4KTC3199P Q704 TRANSISTO...

Page 55: ...AJR5Z0223 R557 CARBON RES 1 4W J 820 RCX4JATZ0821 R558 CHIP RES 1608 1 10W F 2 2k RRXAFR5Z2201 Ref No Description Part No R561 CHIP RES 1 10W F 680 RRXAFR5H6800 R562 CHIP RES 1 10W F 220 RRXAFR5H2200...

Page 56: ...CHIP RES 1608 1 10W 0 RRXAJR5Z0000 R791 CHIP RES 1 10W J 33k RRXAJR5Z0333 R792 CHIP RES 1 10W J 39k RRXAJR5Z0393 Ref No Description Part No R793 CHIP RES 1 10W J 390 RRXAJR5Z0391 R794 PCB JUMPER D0 6...

Page 57: ...SAB SST0101AL038 SW103 TACT SWITCH SKQSAB SST0101AL038 SW104 TACT SWITCH SKQSAB SST0101AL038 SW105 TACT SWITCH SKQSAB SST0101AL038 SW114 TACT SWITCH SKQSAB SST0101AL038 SW115 TACT SWITCH SKQSAB SST010...

Page 58: ...6626LCT 6626LG L4300UA 01UB 2006 04 07...

Page 59: ...printed to the model number Refer to the Rating Label on the back of the unit to make sure model types This service manual is for the 6626LG A version model and shows only the differences between the...

Page 60: ...version model 6626LG Ref No Description Part No MECHANICAL PARTS A6 RATING LABEL L4302UC S1 CARTON L4302UC 1EM322155 X2 OWNERS MANUAL L4302UC 1EMN21880 X3 REMOCON UNIT NF006UD 170 ECNLC301 NF006UD NF0...

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