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Sylvania 6842THG, Service Manual

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Sylvania 6842THG Service Manual Download Page 121

2-6-2

PZ3PDMCK

Adjusting procedure

1. Get Pattern to be Full White.

2. Check the waveform using Oscilloscope

1) Triggering through V_TOGG of LOGIC Board.

2) Connect the OUT240 Test Point at the center of Y_buffer to other channel, and then check the 1st SF 

operating waveform of 1TV-Field.

3) Check the waveform as before by adjusting Horizontal Division.

4) Check the Reset waveform when the V_TOGG Level is changed.

Set the Rising Ramp like upper picture by adjusting VR5001.

5) Set the Falling Ramp like upper picture by adjusting VR5002.

 

VR5002

 Adjustment : Falling Ramp   

Oscilloscope Setting : 50V / 40us 

VR5001

 Adjustment : Rising Ramp 

Oscilloscope Setting : 50V / 40us 

Summary of Contents for 6842THG

Page 1: ...g I Schematic Diagrams I CBA s I Exploded Views I Parts List Plasma Display Module Section I Precautions I Name Function I Disassembling Assemblingt I Operation Check I Wiring Diagram 42 DIGITAL ANALO...

Page 2: ...injury to service personnel The possibility exists that improper service methods may damage the equipment It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE Funai c...

Page 3: ...stment Instructions 1 6 1 How to initialize the Television 1 7 1 Troubleshooting 1 8 1 Block Diagrams 1 9 1 Schematic Diagrams CBA s and Test Points 1 10 1 Waveforms 1 11 1 Wiring Diagram 1 12 1 IC Pi...

Page 4: ...4 ch 10 ch 41 dBu dBu dBu 20 20 23 Description Condition Unit Nominal Limit 1 Received Freq Range 28dBm kHz kHz 100 100 2 ATSC Dynamic Range min max ch 4 ch 10 ch 41 dBm dBm dBm 76 0 76 0 74 4 Descri...

Page 5: ...slightly below these specifications Limit specifications represent the abso lute worst condition that still might be considered acceptable In no case should a unit fail to meet limit specifica tions D...

Page 6: ...customer Repeat this test with the instrument AC switch in the off po sition d Leakage Current Hot Check With the instru ment completely reassembled plug the AC line cord directly into a 120V AC outle...

Page 7: ...ons are issued whenever appropriate Prior to shipment from the factory our products are strictly inspected to con firm they comply with the recognized product safe ty and electrical codes of the count...

Page 8: ...part number specified B In addition to safety other parts and assemblies are specified for conformance with regulations ap plying to spurious radiation These must also be replaced only with specified...

Page 9: ...lly 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 val ue in the table b...

Page 10: ...the Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while ap plying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat...

Page 11: ...removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Release the flat pack IC from the CBA using twee zers Fig...

Page 12: ...nstallation 1 Using desoldering braid remove the solder from the foil of each pin of the flat pack IC on the CBA so you can install a replacement flat pack IC more easily 2 The I mark on the flat pack...

Page 13: ...ded 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 1M on the workbench or other surfa...

Page 14: ...1 4 1 L0700IB BASIC SETUP AND OPERATING GUIDE...

Page 15: ...1 4 2 L0700IB...

Page 16: ...1 4 3 L0700IB...

Page 17: ...1 4 4 L0700IB...

Page 18: ...1 4 5 L0700IB...

Page 19: ...1 4 6 L0700IB...

Page 20: ...der U 27 Decoration Panel 28 Switch CBA Holder 19 Chassis Bracket 17 Filter Holder S Assembly 16 Filter Holder L Assembly 20 Sub Power Supply CBA 21 Power Supply CBA 23 Plasma Display Module 30 Front...

Page 21: ...peaker Bracket D5 8 S B1 2 S B2 14 2 Speaker Rear Cover R D5 6 S B3 14 3 Speaker Rear Cover L D5 6 S B4 14 4 Network 1 CBA D5 D11 2 S B5 CN902 CN903 14 5 Network 2 CBA D5 D11 2 S B6 CN952 CN953 14 6 S...

Page 22: ...and PDP Module Handling of IMPORTANT SAFETY PRECAUTIONS section not to injure and or break the Plasma Display Module Fig D1 Fig D2 S 1 S 1 S 1 S 1 S 1 S 1 1 Rear Cabinet S 6 S 5 S 5 S 7 S 3 S 3 S 2 S...

Page 23: ...S 15 S 15 S 15 S 15 9 Analog CBA 8 AC Inlet 10 Digital CBA Unit 11 Stand Assembly 14 Speaker Box Assembly 12 Jack Cover S 16 S 10 S 10 S 17 S 17 S 13 S 14 S 11 S 9 S 18 S 18 S A2 S A1 S A2 S A3 S A3...

Page 24: ...14 7 Tweeter Speaker S B7 S B8 S B6 14 7 Tweeter Speaker 14 6 Speaker S B4 S B4 S B3 S B3 S B2 S B1 S B1 S B1 S B1 S B3 14 6 Speaker 14 4 Network 1 CBA 14 8 Speaker Front R 14 2 Speaker Rear Cover R 1...

Page 25: ...17 Filter Holder S Assembly 17 Filter Holder S Assembly 16 Filter Holder L Assembly 16 Filter Holder L Assembly 18 Optical Filter S 24 S 22 S 24 S 25 19 Chassis Bracket 19 Chassis Bracket 23 Plasma Di...

Page 26: ...8 S 29 S 29 25 Panel Holder U 26 Panel Holder L 24 Panel Holder S 24 Panel Holder S S 26 S 26 S 26 S 27 S 27 S 27 S 27 S 30 S 30 S 30 S 31 S 31 S 32 S 32 S 31 29 Switch CBA 28 Switch CBA Holder 30 Fro...

Page 27: ...per Wire saddle Clamper Clamper Digital CBA Switch CBA CN151 Network 1 CBA Network 2 CBA Jack CBA CN701 Analog CBA To Plasma Display Module CN2007 CN2005 CN2004 CN902 CN903 CN952 CN2100 CN2101 CN2002...

Page 28: ...1 2 Add J1 Jumper Wire to the remote control CBA Fig 2 How to set up the service mode Service mode 1 To turn the power on press POWER button on the normal remote control unit or the unit 2 Use the se...

Page 29: ...2250 GND VR2350 Power Supply CBA 1 Operate the unit more than 20 minutes 2 Connect DC Voltmeter to J2116 B and TP2250 GND 3 Input an APL 100 white VIDEO signal 4 Adjust VR2350 so that the voltage of J...

Page 30: ...an APL 100 white VIDEO signal 4 Adjust VR2850 so that the voltage of J2111 B becomes the specified voltage as shown on the panel label Test Point Adj Point J2135 B TP2250 GND VR2650 M EQ Condition Re...

Page 31: ...ach color mode press CH o p buttons to adjust the values of color 8 Adjust Red and Blue color so that the temperature becomes 12000 K 5MPCD x 272 y 278 3 9 For low light adjustment bring the optical r...

Page 32: ...omponent 1 Y jack 2 Enter the service mode 3 To enter 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...

Page 33: ...he service mode press SLEEP button on the service remote control unit 4 To reset to factory setting press DISPLAY button on the normal remote control unit INITIALIZE red appears on the screen as shown...

Page 34: ...n normally 5V line is poor Q2451 Q2452 If removing D2505 the unit turns the power on normally 15V line is poor IC2451 D2452 D2454 If removing D2510 the unit turns the power on normally 3 3V line is po...

Page 35: ...is cut off R2014 is cut off IC2000 IC2050 Q2001 Q2003 D2010 D2014 D2067 3 3V is not outputted to both ends on C2055 D2072 5V is not outputted to both ends on C2074 IC2051 D2062 D2063 D2071 A 21V is n...

Page 36: ...onent 1 jack CN114 Pin 11 COMPONENT1 Y CN114 Pin 13 COMPONENT1 Pb CN114 Pin 14 COMPONENT1 Pr When inputting video signal to component 2 jack CN114 Pin 16 COMPONENT2 Y CN114 Pin 18 COMPONENT2 Pb CN114...

Page 37: ...2 AUDIO5 L IC451 Pin 2 AUDIO5 R When inputting to HDMI In jack AUDIO L R IC452 Pin 15 AUDIO6 L IC451 Pin 15 AUDIO6 R When inputting to ANT In jack continued to A on next page Pin 9 on IC451 IC452 Pin...

Page 38: ...on IC801 Pin 1 on CN801 Pin 12 on IC801 Pin 1 on CN802 CN801 Pin 1 L CH CN802 Pin 1 R CH Is each audio signal inputted to Pin 1 on CN801 and Pin 1 on CN802 IC801 Pin 7 L CH IC801 Pin 12 R CH Is audio...

Page 39: ...to component 2 jack AUDIO L R IC452 Pin 2 AUDIO5 L IC451 Pin 2 AUDIO5 R When inputting to HDMI In jack AUDIO L R IC452 Pin 15 AUDIO6 L IC451 Pin 15 AUDIO6 R When inputting to ANT In jack Pin 9 on IC4...

Page 40: ...N D151 SUB PSU ON 3 3V TO AUDIO BLOCK DIAGRAM TO AUDIO BLOCK DIAGRAM PROTECT2 VOLUME AMP MUTE AUDIO SW0 AUDIO SW1 AUDIO SW2 AMP MUTE AUDIO SW0 AUDIO SW1 AUDIO SW2 AUDIO MUTE AUDIO MUTE LED1 4 REMOTE 2...

Page 41: ...EO Y IN2 21 3 S VIDEO C IN2 22 2 VIDEO Y IN1 11 13 CN701 CN702 S VIDEO Y IN2 9 9 S VIDEO C IN2 7 7 VIDEO IN3 5 5 VIDEO Pb IN1 13 11 VIDEO Pr IN1 14 10 VIDEO Y IN2 16 8 VIDEO Pb IN2 18 6 VIDEO Pr IN2 1...

Page 42: ...0 4 TX0 3 TX1 8 TX1 7 TX2 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...

Page 43: ...UDIO 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 CN701 CN702 AUDIO L IN2 3 3 AUDIO R IN2 1 1 TUNER AUDIO L 16 8 TUNER AUDIO R 15 9 13 14 1 5 2 15 13 14 1 5 2 15...

Page 44: ...REG IC2450 SHUNT REG 3 1 7 2 SW 5V 15V REG IC2451 Q2850 Q2855 Q2453 Q2454 Q2451 Q2452 SW 5V Q2504 Q2505 SW 18V SWITCH SW CTL Q2400 Q2401 Q2402 Q2200 SWITCHING CONTROL Q2301 Q2302 Q2300 SB ON2 AC DET P...

Page 45: ...IN POWER SUPPLY BLOCK DIAGRAM CN8003 SHUNT REG CN2001 AC DET 1 AC DET 2 P ON 16V 3 TO MAIN POWER SUPPLY BLOCK DIAGRAM CN2101 TO DIGITAL CBA UNIT CN1111 21V REG Q2050 Q2051 Q2052 5V REG IC2501 IC2050 3...

Page 46: ...rawings 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...

Page 47: ...r amended 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 l...

Page 48: ...1 10 3 Analog 1 3 Schematic Diagram L0700SCA1...

Page 49: ...1 10 4 Analog 2 3 Schematic Diagram L0700SCA2...

Page 50: ...y 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 For continued protection against risk of fi...

Page 51: ...e AC power supply Otherwise it may cause some components in the power supply circuit to fail For continued protection against risk of fire replace only with same type 2A 250V fuse CAUTION ATTENTION Ut...

Page 52: ...upply 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 For continued protection against risk o...

Page 53: ...1 10 8 Power Supply 3 3 Schematic Diagram L0700SCP3...

Page 54: ...upply 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 For continued protection against risk o...

Page 55: ...1 10 10 L0700SCSW Switch Schematic Diagram L0700SCJ Jack Schematic Diagram Network 1 Schematic Diagram Network 2 Schematic Diagram L0700SCN1 L0700SCN2...

Page 56: ...Digital 1 8 Schematic Diagram L0700SCD1 CN1116 1 0 2 5 2 3 5 2 4 0 5 5 9 6 5 9 7 0 8 5 9 9 5 9 10 0 11 5 9 12 5 9 13 0 14 0 15 0 16 0 17 1 6 18 0 19 1 7 20 1 6 21 0 22 1 7 23 0 VOLTAGE CHART Pin No V...

Page 57: ...10 12 Digital 2 8 Schematic Diagram L0700SCD2 CN1112 1 2 4 2 0 3 3 2 4 0 5 0 6 0 8 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 2 3 19 0 20 3 3 21 3 2 22 0 23 0 VOLTAGE CHART Pin No Voltage...

Page 58: ...vided into four and shown as IC1504 1 4 IC1504 4 4 in this Digital Main Schematic Diagram Section Digital 3 8 Schematic Diagram L0700SCD3 CN1113 1 0 2 1 7 3 1 7 4 0 5 1 7 6 1 7 7 0 8 1 7 9 0 10 1 6 11...

Page 59: ...04 4 4 in this Digital Main Schematic Diagram Section L0700SCD4 Digital 4 8 Schematic Diagram CN1101 1 0 2 0 3 3 3 4 3 3 CN1102 1 0 2 0 3 5 0 4 0 5 3 3 CN1111 1 3 2 2 2 8 3 0 4 11 8 5 1 8 6 1 3 7 1 3...

Page 60: ...er 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 Digital 5 8 Schem...

Page 61: ...1 10 16 Digital 6 8 Schematic Diagram L0700SCD6...

Page 62: ...shown as IC1504 1 4 IC1504 4 4 in this Digital Main Schematic Diagram Section Digital 7 8 Schematic Diagram L0700SCD7 CN1121 1 0 2 0 3 1 3 4 1 2 5 0 6 0 7 1 2 8 1 3 9 0 10 0 11 1 2 12 1 3 13 0 14 0 1...

Page 63: ...1 10 18 Digital 8 8 Schematic Diagram L0700SCD8 CN1505 1 0 2 3 3 3 3 3 4 0 5 3 3 VOLTAGE CHART Pin No Voltage...

Page 64: ...t 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...

Page 65: ...ircuit 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...

Page 66: ...C plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail For continued protection against risk of fire replace only with same type 2A 250V fuse CAUTION...

Page 67: ...herwise it may cause some components in the power supply circuit to fail For continued protection against risk of fire replace only with same type 2A 250V fuse CAUTION ATTENTION Utiliser un fusible de...

Page 68: ...ts in the power supply circuit to fail For continued protection against risk of fire replace only with same type 4A 250V fuse CAUTION ATTENTION Utiliser un fusible de rechange de m me type de 4A 250V...

Page 69: ...1 10 24 Jack CBA Top View Jack CBA Bottom View BL0700F01011 2...

Page 70: ...1 10 25 Switch CBA Top View Switch CBA Bottom View BL0700F01011 3...

Page 71: ...1 10 26 Network 1 CBA Top View Network 2 CBA Top View BL0700F01011 4 BL0700F01011 5 Network 1 CBA Bottom View Network 2 CBA Bottom View...

Page 72: ...13 of CN114 WF1 WF5 WF1 WF13 Waveforms to be observed at Waveform check points Shown in Schematic Diagram WF2 WF3 1DIV 5V 5 s D2051 Anode WF8 1DIV 500mV 25 s Pin 14 of CN114 WF6 WF4 1DIV 5V 5 s D2405...

Page 73: ...R 2 GND AUDIO L 1 GND CN114 CN1116 GND GND VIDEO IN1 GND S VIDEO Y IN1 S VIDEO C IN1 GND VIDEO IN2 NU NU HDMI AUDIO R IN GND GND HDMI AUDIO L IN TUNER AUDIO L TUNER AUDIO R GND AUDIO L 2 AUDIO R 1 AU...

Page 74: ...L P ON Power On Low 14 NU Not Used 15 FAN CONT FAN Control Output 16 NU Not Used 17 SUS ON SUS Power Supply Control Signal Output 18 SB ON SB Power Supply Control Signal Output 19 SB ON2 SB ON2 Power...

Page 75: ...C PST600D 2 R59 195 PQ035ZN1HZPH CD4051BNSR 2SC2785 F KTA1267 GR AT P KTA 1266 GR AT P KTB985 C AT P KTD1347 C AT P Note A Anode K Cathode E Emitter C Collector B Base R Reference S Source G Gate D Dr...

Page 76: ...it Digital CBA Unit CLN1 CLN2 CLN6 CLN5 FC1 FC2 Stand Assembly Stand Assembly JK601 Switch CBA L1 L7 L8 L8 L1 L7 B8 B4 L1 L1 L1 L1 A12 A11 A10 A9 A28 B18 B6 B5 L1 L1 L1 L1 L1 L1 L1 Sub Power Supply CB...

Page 77: ...1 15 2 L0700PEX Packing S4 S1 S1 S2 S2 S2 S2 S2 S1 S7 X5 X3 X2 X1 X4 Set S3 S5 S6 AC601 Packing Tape PP Band Packing Tape Tape REAR Packing Tape FRONT...

Page 78: ...00 002 CLN3 WIRE ASSEMBLY 13P SUBPSU ANALOG WX1L0700 003 WX1L0700 003 CLN4 WIRE ASSEMBLY 5P MAINPSU ANALOG WX1L0700 005 WX1L0700 005 CLN5 WIRE ASSEMBLY 8P DIGITAL ANALOG SW WX1L0700 006 WX1L0700 006 C...

Page 79: ...16 2 L0700CA X2 BAG POLYETHYLENE 235X365XT0 03 0EM408420A X3 REMOTE CONTROL NF000UD NF000UD NF000UD X4 DRY BATTERY SUNRISE R6SSE 2S XB0M451MS002 X5 EASY SET UP GUIDE L0700UA 1EMN21783 Ref No Descripti...

Page 80: ...8 CERAMIC CAP AX F Z 0 01 F 25V CDA1EZT0F103 C549 ELECTROLYTIC CAP 470 F 6 3V M CE0KMASDL471 C552 ELECTROLYTIC CAP 1000 F 6 3V M CE0KMASDL102 C553 ELECTROLYTIC CAP 220 F 25V M CE1EMASDL221 C554 ELECTR...

Page 81: ...ITCHING DIODE 1SS133 T 77 QDTZ001SS133 D561 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D563 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D564 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D566 SWITCHING DIODE 1S...

Page 82: ...ER D0 6 P5 0 JW5 0T R535 CHIP RES 1 10W J 10k RRXAJR5Z0103 R536 CHIP RES 1 10W F 1 1k RRXAFR5Z1101 Ref No Description Part No R537 CHIP RES 1 10W F 1 0k RRXAFR5H1001 R538 CARBON RES 1 4W J 10k RCX4JAT...

Page 83: ...1 WIRE ASSEMBLY 1P WX1L0600 020 WX1L0600 020 CL602 WIRE ASSEMBLY 1P WX1L0600 019 WX1L0600 019 F601 FUSE 8A 250V PB FREE 0215008 MXP PBGZ20BAG022 FH601 FUSE HOLDER MSF 015 LF B110 XH01Z00LY002 FH602 FU...

Page 84: ...201 CERAMIC CAP R K 1000pF 2KV CCD3DKA0R102 C2202 CERAMIC CAP AX B K 0 0015 F 50V CA1J152TU011 C2203 FILM CAP P 0 001 F 50V J CA1J102MS029 C2204 P P CAPACITOR 0 047 F 630V J CBP2KKD00473 C2205 CAP ELE...

Page 85: ...DIODE FR104 B NDLZ000FR104 D2252 DIODE FR104 B NDLZ000FR104 D2254 DIODE SILICON YG226S QDQZ0YG226S8 Ref No Description Part No D2255 PCB JUMPER D0 6 P10 0 JW10 0T D2256 ZENER DIODE MTZJT 775 6B QDTB0M...

Page 86: ...T P NQS4KTA1266P Q2505 TRANSISTOR 2SC2785 F QQSF02SC2785 Ref No Description Part No Q2600 POWER MOS FET 2SK3565 Q QFQZ2SK3565Q Q2601 TRANSISTOR 2SC2785 F QQSF02SC2785 Q2602 TRANSISTOR 2SC2120 O TPE2 Q...

Page 87: ...PER D0 6 P5 0 JW5 0T R2361 CARBON RES 1 4W J 56k RCX4JATZ0563 R2362 RES METALIZED FILM 1 4W F 82k RMX4FATH8202 R2363 RES METALIZED FILM 1 4W F 82k RMX4FATH8202 Ref No Description Part No R2365 RES MET...

Page 88: ...k RCX4JATZ0224 R2755 CARBON RES 1 4W J 220k RCX4JATZ0224 Ref No Description Part No R2756 CARBON RES 1 4W J 4 7k RCX4JATZ0472 R2757 CARBON RES 1 4W J 5 6k RCX4JATZ0562 R2760 CARBON RES 1 4W J 82k RCX4...

Page 89: ...AP AX F 0 1 F 50V CCK1JZT0F104 C2076 FILM CAP P 0 01 F 50V J CA1J103MS029 C2077 CAP ELE SML 105 1 F 100V M CE2AMASTJ1R0 Ref No Description Part No CONNECTORS CN2000 CONNECTOR PRINT OSU C S 1 1123724 2...

Page 90: ...RES 1 4W J 1k RCX4JATZ0102 R2060 METAL OXIDE FILM RES 1W J 680 RN01681ZU001 R2061 CARBON RES 1 4W J 10k RCX4JATZ0103 R2062 CARBON RES 1 4W J 2 2k RCX4JATZ0222 R2063 METAL OXIDE FILM RES 2W J 560 RN02...

Page 91: ...1 Name Function 2 2 1 Operation Checking After Rectification 2 3 1 Disassembling Assembling 2 4 1 Operation Check After Repair Service 2 5 1 Operation Check 2 6 1 Wiring Diagram 2 7 1 Plasma Display...

Page 92: ...be sure to use all protective stuffs including a nonmetal controlling handle and the covering of partitioning type Caution for design change Do not install any additional devices to the module and do...

Page 93: ...the lead of a new ESD bring the protective material into contact with the chassis or assembly that the ESD is to be installed on When handing an unpacked ESD for replacement do not move around too muc...

Page 94: ...3 Y MAIN Driving Board ASSY PCB Y MAIN 1ESA13497 4 LOGIC E BUFFER Board ASSY PCB BUFFER 1ESA13500 5 LOGIC F BUFFER Board ASSY PCB BUFFER 1ESA13501 6 Y BUFFER Board ASSY PCB BUFFER 1ESA13499 7 LOGIC Y...

Page 95: ...Xs Xg Each Voltage from SMPS Drive signal from logic X bias Xe Y out X out DC DC Vsch Vccf Sustain Yr Yf Ys Yg Rising ramp Yrr falling ramp Yfr Scan period Ysc Drive signal from logic Each Voltage fr...

Page 96: ...ING AFTER RECTIFICATION Flow chart A S Check Point 1 Checking the voltage for each assembly 2 Judging the Logic board working or not LED 2011 blanking 3 Adjusting the output signal through test points...

Page 97: ...how to find the defective board No Display Logic Main LED 2011 Blinks Y Main Broken panel Check LVDS Cable LED 2010 Green Fuse F2000 F2001 CN2026 Cable Replace Logic B d NO YES NO Fuse Replace Y B d O...

Page 98: ...2 3 3 PZ3PDMOP OR Vs fuse F5003 OK 0 x x x ohm Vs fuse F5003 OPEN x x Mohm OR 15V fuse F5004 OK 0 x x x ohm 15V fuse F5004 OPEN x x Mohm OR 5V fuse F5001 OK 0 x x x ohm 5V fuse F5001 OPEN x x Mohm...

Page 99: ...inner diode Ys Yg Ypn Yscan Yfr Yrr Xs Xg Xe OK 0 3 0 9 V Short 0 000 0 00x V IGBT do not contain the inner diode Yr Yf Xr Xf OK xx x kohm Short x x ohm Ys Q5013 14 Yg Q5009 10 Ypn Q5016 17 18 Yscan Q...

Page 100: ...4003 OPEN x x Mohm Check F4004 for Vdd 5V F4001 for Vcc 15V F4002 for Vs 200V Fuse Replace X B d FET IGBT Check Q4002 3 Q4011 Q4016 Replace X B d Panel Replace Y BUFFER OPEN SHORT YES OK OPEN X main Y...

Page 101: ...2 3 6 PZ3PDMOP OR Ve fuse F4005 OK 0 x x x ohm Vs fuse F4005 OPEN x x Mohm OR 15V fuse F4001 OK 0 x x x ohm Vs fuse F4001 OPEN x x Mohm OR 5V fuse F4004 OK 0 x x x ohm 5V fuse F4004 OPEN x x Mohm...

Page 102: ...Abnormal Display is related with Y MAIN X MAIN Logic Main and so on This page shows you how to check the boards and the following pages show you how to find the defective board Y buffer Check Point OU...

Page 103: ...IGBT Check Q5009 Q5021 Replace Y B d Check F4004 for Vdd 5V F4001 for Vcc 15V F4002 for Vs 200V Fuse Replace X B d FET IGBT Check Q4002 3 Q4011 Q4016 Replace X B d Y main OPEN SHORT SHORT OPEN X main...

Page 104: ...2 3 9 PZ3PDMOP Horizontal line or block Open Regular Abnormal Logic main Normal State Replace board Logic Main LED 2011 Blinks Motion of Vsync Y FPC Y buffer connector...

Page 105: ...es show you how to find the defective board Check Connection Y buffer Y FPC Y buffer Reconnection Poor Check Y buffer connector pin broken or bent Y buffer connector Y FPC Check Y FPC pin broken or be...

Page 106: ...age shows you how to check the boards and the following pages show you how to find the defective board 1 Line or 1 Block Replace PDP YES What is the status of open Replace Logic Main Address Buffer E...

Page 107: ...t is on screen Y MAIN X MAIN Logic Main Sustain Open some horizontal lines don t exist on screen Scan Buffer FPC of X Y Sustain Short some horizontal lines appear to be linked on screen Scan Buffer FP...

Page 108: ...nel electrode single line foreign material electrostatic TCP defect 2 Parts TCP Board connection defect 3 Operation Assembly error Film damage Symptom Another color simultaneously appears because adja...

Page 109: ...than address open and short Data printout signal error occurring at certain Gradation or pattern Symptom One or more line do not light up in Sustain direction Cause 1 Manufacturing Panel bus electrod...

Page 110: ...atter Cause 1 Manufacturing Panel electrode short Foreign material 2 Parts Board connector pin error 3 Operation connector assembling error Symptom Burn caused by the damage of address bus dielectric...

Page 111: ...e Cause 1 Panel MgO source dielectric thickness cell pitch phosphor 2 Circuit drive waveform voltage condition Symptom Normal discharge but cells appear darker due to weak light emission occurring mai...

Page 112: ...arts and damage level Cause 1 Manufacturing Flatness palette pin interruption 2 Operation overload of panel corner careless handling 3 Panel Flatness assembly error Symptom Crack in break if exhaust p...

Page 113: ...500 MHz sampling 2 Probe 10 1 3 Digital Multi meter 4 Signal Generator Disassembling Re assembling Disassembling Re assembling of FPC Flexible Printed Circuit and Y Buffer 1 Removal procedures 1 Full...

Page 114: ...f X Main Board 1 Disassembling Procedure 2 Assembling Procedure 1 Put the Flat cable into the connector press down lightly until locking sound Dack comes out 1 Pull out the clamp of connector 2 Pull F...

Page 115: ...onnector Assembling of TCP 1 Put the TCP into the Connector carefully 2 Close the clamp completely The sound Dack comes out Notice TCP and Connector was connected surely Notice 1 Checking whether the...

Page 116: ...isassembling of TCP 1 The misassembling of TCP is the cause of defect Assembling Disassembling of FFC This is the photo of the assembling of FFC The procedure of assembling and disassembling of FFC is...

Page 117: ...n screw tightly 6 Get rid of the foreign material from the connector 7 Connect the TCP FFC and power cable to the connector 8 Reassemble the TCP heat sink 9 Screw in order of 2 1 3 Photo 2 If you scre...

Page 118: ...connector of CN5004 CN5011 CN5012 among YB and YM 9 Arrange the board on the chassis and then screw to fix 10 Connect the FPC and YM of panel to the connector 11 Supply the electric power to the modul...

Page 119: ...whether something wrong during Full White Pattern period 5 If something wrong each voltage should be set to the standard voltage by using Multi Tester and adjusting tools 6 Adjust the waveform using...

Page 120: ...tment Y Board 1st Sub Field Adjust VR5001 to set the time of Yrr Main Reset Rising Ramp like the below picture Oscilloscope Setting 50V 40us Adjust VR5002 to set the time of Yfr Main Reset Falling Ram...

Page 121: ...and then check the 1st SF operating waveform of 1TV Field 3 Check the waveform as before by adjusting Horizontal Division 4 Check the Reset waveform when the V_TOGG Level is changed Set the Rising Ram...

Page 122: ...08 CN5004 CN5507 CN5013 CN2502 CN2503 CN2504 CN2505 CN2506 CN2507 CN2508 CN2509 CN2084 CN2500 CN2005 CN2084 CN5010 TO POWER SUPPLY CBA CN8006 TO DIGITAL CBA CN1121 TO POWER SUPPLY CBA CN8007 TO POWER...

Page 123: ...6842THG L0700UA 2006 05 25...

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