LG 60PC1D - - 60" Plasma TV Training Presentation Download Page 72

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Plasma Display Panel Troubleshooting - 2007

ER_IPM

SUS_IPM

ER_LOW

ER_IO

ER_HIGH

Gnd
ER-UP
ER-DN

Gnd
18VDC

Gnd
SUS_DN

SUS_UP

Gnd
18VDC

Chassi GND

SUS_OUT

5VDC

18V IPM

P12

IC1, IC24

5VDC

R42

5VDC

Z Bias Circuit

Z Bias Control VR3

Q16,

Q18

D10

D17

To PDP

Output

Waveform TP

To PDP

Logic from the Control PCB.

95V

B11

60PC1D Z SUS

Block Diagram

+ C18

Summary of Contents for 60PC1D - - 60" Plasma TV

Page 1: ...1 Plasma Display Panel Troubleshooting 2007 60PC1D Training Presentation Advanced Dual Scan PDP Troubleshooting Collection By Pravin Mevada Pravin Mevada ...

Page 2: ...tomer Service and Part Sales 800 243 0000 Technical Support and Part Sales 800 847 7597 USA Website GCSC aic lgservice com Customer Service Website us lgservice com LG CS Academy lgcsacademy com Published March 2007 by LG Technical Support and Training Troubleshooting ...

Page 3: ...turer or seller maintains no liability for the interpretation of this information nor can it assume any liability in conjunction with its use When servicing this product under no circumstances should the original design be modified or altered without permission from LG Electronics Unauthorized modifications will not only void the warranty but may lead to property damage or user injury If wires scr...

Page 4: ...ical power is required for diagnosis or test purposes disconnect the power immediately after performing the necessary checks Also be aware that many household products present a weight hazard At least two people should be involved in the installation or servicing of such devices Failure to consider the weight of the product could result in physical injury Troubleshooting ...

Page 5: ...t strap to a ground connection point or unpainted metal in the product Alternatively you can touch your finger repeatedly to a ground connection point or unpainted metal in the product Before removing a replacement part from its package touch the anti static bag to a ground connection point or unpainted metal in the product Handle the electronic control assembly by its edges only When repackaging ...

Page 6: ...he instruction manual may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the followin...

Page 7: ...lay Panel Troubleshooting 2007 Preliminary Matters The Fine Print COMPLIANCE The responsible party for this device s compliance is LG Electronics Alabama Inc 201 James Record Road Huntsville AL 35824 Troubleshooting ...

Page 8: ...ide the Panel than is specified for the product 3 Be cautious of electric shock from the PDP module since the PDP module uses high voltage it is recommended that you should not touch the Power Supply or Drive circuits for at least one minute because of residual current stored 4 C MOS circuits are used extensively for processing the Drive Signals and should be protected from static electricity 5 Th...

Page 9: ...check should always be the DC Supply Voltages to those circuits under test Always confirm the supplies are not only the proper level but be sure they are noise free If the supplies are missing check the resistance for possible short circuits Isolate To further isolate the failure check for the proper waveforms with the Oscilloscope to make a final determination of the failure Look for correct Ampl...

Page 10: ...of Topics to be Discussed Y SUS Board Z SUS Board Y Drive Board Control Board X Drive Boards 2 Circuit Board Operation Troubleshooting and Alignment Troubleshooting 1 Disassembly Instructions Circuit Board Layout and Identification Switch mode Power Supply ...

Page 11: ...embly Layout and Circuit Board Identification of the 60PC1D Dual Scan Plasma Display Panel Troubleshooting Upon completion of this section the Technician will have a better understanding of the disassembly procedures the layout of the printed circuit boards and be able to identify each board ...

Page 12: ...12 Plasma Display Panel Troubleshooting 2007 Disassembly Procedure 60PC1D Troubleshooting To remove the Back Cover remove the 40 screws as shown the stand will not need to be removed ...

Page 13: ...SMPS Board 6709V00016A Y SUS Board Z SUS Board AC DC Board 6709V00018A Main Board EBT32634401 Y Drive Boards Top X Boards Bottom X Boards Bottom X Boards Circuit Board Layout PFC Standby 6709V00017A STB Supply Note The Power Supply Circuit consists of 3 PCBs in Generation 1 and 2 PCBs in Generation 2 ...

Page 14: ...oard Layout Troubleshooting SMPS EAY32961901 Control Board EBT32929501 PFC Standby EAY32961801 Note The Early Version prior to March April 2007 had the AC DC Supply Board in this Position The Power Supply and Control Boards are not interchangeable From one Generation to the other ...

Page 15: ...15 Plasma Display Panel Troubleshooting 2007 Input Jacks Troubleshooting 60PC1D Circuit Board Layout ...

Page 16: ...TL ST 5V GND VS ON 5V MNT POD P804 5V MNT POD GND RUSH VSON and P803A PFC AC GND 18V Remove 6 screws securing the Board SMPS Board Removal Remove Cables P803B PFC B AC GND 18V P804B POD GND RUSH VSON P801B 19V 19V GND GND 6V GND 3 4V GND 12V GND P800B 3 4V 3 4V GND GND 6V 6V GND GND 12V 12V GND GND P8012 5VDC GND and P8011 VA GND VS Remove 8 screws securing the Board Z SUS Board Removal Remove Cab...

Page 17: ...Logic Signals P200 Y SUS Logic Signals P300 5VDC 5VDC 5VDC 5VDC GND GND GND GND Remove 5 screws securing the Board Top Y Drive Board Removal Remove 10 Screws from the Metal Bracket marked A see page 19 to gain access to the Top Y Drive Board Carefully remove the Ribbon Cables P8 P9 P12 P13 P14 P15 and Connectors P2 Refer to P8 on the Y SUS Board and P4 Floating Ground Remove 5 screws securing the ...

Page 18: ...P4004 from P 801A P4005 from P101B P4003 from P800B P4007 from the Keyboard P5002 from the Side Input Jacks P7009 and 7010 Speakers P6007 Y SUS Fan and P6009 Main Fan and last the LVDS Cable care must be taken as the LVDS Cable is very fragile will need to be removed Remove the 9 screws securing the Lower Chassis Assembly and the AC Input Grounding Screw disconnect P801 AC Input from the AC DC Sup...

Page 19: ...19 Plasma Display Panel Troubleshooting 2007 A A A Troubleshooting Disassembly Procedure 60PC1D B B B B B B B B B B B ...

Page 20: ...ttom X Drive Boards Control Board 5v VA 5v 5v VA RGB Logic Signals RGB Logic Signals Logic Signals 5v VA Y Drive Top 5V VA Y Drive Bottom Logic Signal Logic Signal Signal and Voltage Distribution for the 60PC1 5V VA 5V VA 5v VA RGB Logic Signals Troubleshooting AC DC Power Supply PFC Supply STB Main Board LVDS ON OFF CONTROL Y Drive Signal 5V VA ...

Page 21: ... DST 1 3 4v 3 3V STBY RUN 2 19 75v P 19V 2 3 7v RL ON 2 3 4v 3 3V 1 2 6v 0 3 0 GND 3 5 0v ST 5V 3 0 GND 2 0 3 3v 4 0 GND 4 0 GND 4 0 GND 3 0 0 5 5 8v NC 5 2 7v INV I O 5 5 8v 6 0V 4 5 0v 5 0v 6 0 GND 6 2 7v 5V HNT 6 5 8v 6 0V 5 0 0 7 3 4v 3 3V 7 2 5 POD INV 7 0 GND 6 4 0v 4 0v 8 0 GND 8 0 ST 5V 8 0 GND 7 0 0 9 12 1v NC 9 0 GND 9 12 1v 12 0V 8 3 4v 3 4v 10 0 GND 10 0 PWM 10 12 1v 12 0V 9 0 0 11 0 4...

Page 22: ...22 TP0 TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12 TP13 TP14 TP15 TP16 TP17 TP18 TP19 TP20 TP21 TP22 TP23 TP24 TP25 TP26 TP27 TP28 TP29 TP30 ...

Page 23: ...23 TP31 TP32 TP33 TP34 TP35 TP36 TP37 TP38 TP39 TP40 TP41 TP42 TP43 TP44 TP45 TP46 TP47 TP48 TP49 TP50 TP51 TP52 TP53 TP54 TP55 TP56 TP57 TP58 TP59 TP60 ...

Page 24: ...24 TP64 TP65 TP66 TP67 TP68 TP69 TP70 TP63 TP62 TP61 TP71 TP72 TP73 TP74 TP75 TP79 TP78 TP81 TP82 TP83 TP84 TP86 TP87 TP88 TP89 TP90 TP91 TP76 TP77 TP80 TP85 TP92 TP93 TP94 TP95 ...

Page 25: ...25 TP99 TP100 TP98 TP97 TP96 TP101 TP102 TP103 TP104 TP105 TP106 TP107 TP108 TP111 TP113 TP114 TP115 TP117 TP118 TP119 TP120 TP123 TP124 TP109 TP110 TP112 TP116 TP125 TP126 TP127 TP121 TP122 TP128 ...

Page 26: ...5 TP136 TP137 TP138 TP139 TP140 TP141 TP145 TP147 TP148 PIN 1 TP149 PIN 2 TP151 PIN 4 TP152 PIN 5 TP155 PIN 8 TP156 PIN 9 TP142 TP143 TP146 TP150 PIN 3 TP157 PIN 10 TP158 PIN 11 TP153 PIN 6 TP154 PIN 7 TP159 PIN 12 TP144 LVDS Cable pin 1 is GND ...

Page 27: ...TP162 PIN 15 TP161 PIN 14 TP160 PIN 13 TP165 PIN 18 TP166 PIN 19 TP167 PIN 20 TP168 PIN 21 TP169 PIN 22 TP170 PIN 23 TP171 PIN 24 TP175 PIN 28 TP177 PIN 30 TP178 TP179 TP172 PIN 25 TP173 PIN 26 TP176 PIN 29 TP174 PIN 27 TP180 TP181 ...

Page 28: ...orrect operating voltage levels for the DC 5V VA VS Power Supply Voltages V SET UP VY VSC Y SUS Voltages and Z Bias Z SUS Voltage as they will vary from Panel to Panel V SET_UP VSC Model PDP 60X6 All Voltage DC 5V Va 60V Vs 193V 250 65 110 NA 170 Max Watt 570 W Full White Z_BIAS VY 60PC1D Plasma Display Important Note Troubleshooting ...

Page 29: ...e is developed from resistor R167 the Run Line used to maintain operation is Supplied by the circuit of D156 Q152 R151 ZD151 D153 and R160 see page 31 highlighted in yellow The Power Regulator Transformer T201 supplies the Power FET Q151 Drain Q151 is protected by the snubber circuit of D152 C151 and R155 from any back EMF caused by Transformer T201 The Gate of Q151 is driven by IC151 R154 R153 an...

Page 30: ...30 Plasma Display Panel Troubleshooting 2007 C241 C242 C240 C244 On Off From Micro ...

Page 31: ...31 Plasma Display Panel Troubleshooting 2007 OVP To Photo Coupler IC PC210 Start Resistor Current Sensing Resistor ...

Page 32: ...R215 Q206 T201 R206 Q201 R205 C202 Q202 C207 R204 R203 C205 R213 R210 R201 C203 Q204 C204 R217 T201 R230 R231 C223 R222 C208 ZD201 D202 R212 R211 T201 T201 L251 Q270 Q233 C222 D222 T201 T201 C251 T201 U251 KIA34063A C256 R250 T201 R262 T201 D256 T201 Q261 T201 T201 C252 C258 C257 T201 T201 VR251 T201 T201 C234 T201 HOT COLD HOT COLD D221 R242 C230 D233 D234 6 VDC 3 4 V 3 4 V ON STBY 5V 6 V Switch ...

Page 33: ...ng of the operation and adjustment of each board and how to isolate which board may be at fault in the event of a failure should one occur 60PC1D Power Supplies First Generation Troubleshooting There are 4 Adjustments available on the Switch Mode Power Supply Board and one on the PFC Supply Board SMPS Board 1 VR8401 VA Adjust used for the Vertical Grid Drive 2 VR8501 VS Adjust used for the Horizon...

Page 34: ... STBY Supply 160V STB 20V STB PFC B 110VDC 18V Source 380V Source 380V 18V AC Relay Drive 5V AC ON To Micro VA Source VS Source Low Voltage Source 19V 12V 6V 3 4V 5VDC Source VA VS 5V AC DC SUPPLY Block Diagram 60PC1D Power Supply First Generation Troubleshooting P CTL VS ON And POD from the Micro POD VSON and Rush ...

Page 35: ...C DC Power Supply Board AC Input P801 P8015A P8016A P8017A Relay Drive 20V and 160V Supply for PFC Supplies Approx 20V and 160V to the Standby Power Supply and Approx 110V to the PFC Supply Receives 12V for Relays RL8301 and RL8302 Troubleshooting ...

Page 36: ...lay Drive PFC Supply Input PFC Supply Output Power Control P803A P801 P8016B P804A P801A P8015B PFC Receives 110V from the AC DC Supply and sends 380V and 18V to the Switch Mode Power Supply VR801 is a 380V PFC Adjust Standby Supply receives approx 20V and 160V and outputs 12V AC Detect and 5V ST VR801 ...

Page 37: ...37 Plasma Display Panel Troubleshooting 2007 Switch Mode Power Supply Board Troubleshooting VA VR8401 VS VR8501 3 4V VR8801 5VDC VR8802 380V 18V VA VS 5V P8011 P8012 P800B P101B P803B 3 4V Pin 7 ...

Page 38: ...t is waiting for the on command from the Main Board The Customer turns on the set and the Main Board reacts as long as the AC DC Supply and Standby Supply are functioning normal The next step is for the P CTL line to go high which causes the Relays to close The AC DC Board will output 110VDC to the PFC Board developing the 380VDC and 18VDC lines which power up the SMPS Board and at this point the ...

Page 39: ...of connector P8015A measured from Chassis GND If the voltage is present disconnect AC Power and proceed to step three Step 3 Connect 100 Ohm Watt Resistor from ST 5V Pin3 to P CTL Pin 2 on connector P801A Apply AC Power at this time the AC Relays will close and the 380V PFC and 18 V Supplies will be present at P803A use AC Ground for this check Check for 19V Use Audio Ground 12V 6V and 3 4V use si...

Page 40: ...ion 1 AC INPUT Switch Mode Power Supply PFC Power Supply AC DC Power Supply P8011 P804A P8012 P800B P101B P804B P801A P8015B Standby Power Supply AC ON P CTL ST 5V GND VS ON 5V MT POD P8016B P8016A Resistors 100 Ohms Watt P8017A P8015A P801 P803B P803A P8017B P801A 2 60W Light bulbs VS GND ...

Page 41: ...ma Display Panel Troubleshooting 2007 Troubleshooting 60PC1D Power Supply Generation 1 PCTL VSON POD Wired for Troubleshooting as shown on Page 40 the switches were added for illustrating the power on sequence ...

Page 42: ...en used to develop the 19v 12v 6v and 3 3v supplies Failure of the Relays to close could be caused by a loss of ON Command from the Micro Processor on the Main Board or a Standby circuit failure Relay operation indicates an active processor circuit and Standby Circuit Check for approximately 110 volts at P8017A if missing suspect the AC DC Board if present and the 380 Volt and or the 18 Volt lines...

Page 43: ...V 270 Power ctrl 12V Reversed same readings 8 Meg ST BY B ST BY B Inf AC DET ST BY B PFC Power Supply Standby Power Supply P8017B 500K PFC B PFC B P8016B 8 Meg ST BY B ST BY B 148K AC DET ST BY B P8015B Inf Rush ctrl 12V Inf Power ctrl 12V 3 4 Meg 12V Rush ctrl 3 4 Meg 12V Rush ctrl P803A 5 Meg PFC GND 1K 18V GND P804A Inf 5V MNT GND Inf POD GND 57K Rush GND Inf VSON GND P801A 1K AC ON GND 20K P C...

Page 44: ...nce measurements are approximations Troubleshooting Switch Mode Power Supply P803B 3 MEG PFC GN 286K 18V GN P804B 10K 5VMONI GND 3 MEG POD GND 4 9 MEG Rush GND 4 3 MEG VSON GND P101B 12 MEG 19V GND 2K 6V GND 24 3 4V GND 3 MEG 12V GND P800B 24 3 4V GND 2K 6V GND 3 MEG 12V GND P8012 360 5V GND P8011 5 MEG VS GND 5K VA GND ...

Page 45: ...M 18v ER IPM SUS IPM Ramp UP V SET DN V SET UP Troubleshooting This Section of the Presentation will cover troubleshooting the Y SUS Board for the 60PC1D Dual Scan Plasma Display Upon completion of this Section the technician will have a better understanding of the operation of the circuit and will be able to locate voltage and resistance test points needed for troubleshooting and alignments 60PC1...

Page 46: ...Troubleshooting 2007 60PC1D Y SUS Board Troubleshooting V Set Down Ramp Up V SET UP VY VSC Scope Test Point VSC Test Point Floating Ground Used for VSC Adjust VY Test Point Use Chassis Ground V Set UP Test Points R137 18V IPM ...

Page 47: ...Control Board 5VDC VA IC7 SUS IPM Y DRIVE OUTPUT CIRCUIT Q16 Out to the Control Board VS VS 5V 5V 18v IPM 18v IPM ER_10 R137 Sus out ER High ER Low ER Up ER Down Sus up Sus Down IC2 ER IPM Switching FET s FS2 FL1 FS1 FS3 P6 P5 P1 P2 P3 P4 P7 P10 P8 Y Drive Bottom Left X Board Z SUS Board Power Supply Power Supply Y Drive Y Drive GND ...

Page 48: ...0v 2 0 GND 2 0 GND 3 193v VS 3 5 2v 5V 3 0 3 0 3 0 3 4 8v 5V 3 4 8v 5V 4 0 GND 4 5 2v 5V 4 0 4 0 4 0 4 0 NC 4 0 NC 5 0 GND 5 5v 5 0 5 0 5 59 8v VA 5 59 8vVA 6 0 GND 6 5v 6 0 6 0 7 60v VA 7 5v 7 0 7 0 8 60v VA 8 5v 8 0 8 2v 9 0 9 59 9v 10 0 10 59 9v 11 0 11 193 1v 12 4 6v 12 193 1v 13 1 9v 14 0 15 2 6v P7 P4 P5 P1 P2 P3 P6 60PC1D Y SUS Test Point and Voltage Chart Troubleshooting ...

Page 49: ...ignals input from the Control Board VS VA 5VDC Output for Control Board Pins 1 thru 4 SUS IPM IC7 ER IPM IC2 P7 P10 P3 P1 P2 5VDC P6 P5 Scope Waveform Test Point 5V and VA to Bottom Left X Board VS VA and 5V to Z Board VA 5V Left Top X Board Floating Ground Floating Ground Y Drive Output P8 ...

Page 50: ...roubleshooting 3 Voltmeter Adjustments to Y SUS VSC Control VR3 110 Volts used to shape the Y Drive waveform by setting the V Scan level Measured at the VSC test points R60 and Floating Ground VY Control VR4 65 Volts used to shape the Y Drive waveform by setting the negative excursion of the Drive Signal Check VSC Check VY 60PC1D Y SUS Board Measured at left side of Resistor R181 to Chassis Ground...

Page 51: ...leshooting 60PC1D Y SUS Board Check V SET UP V SET UP Control VR20 250VDC adjustment measured across resistors R51 and R192 which sets the Amplitude of the top portion of the Drive Waveform Voltmeter Adjustments Y SUS Board Continued Panel Adjustments ...

Page 52: ...use of the oscilloscope to properly adjust VR1 RAMP UP is the first control and VR2 V SET DOWN is the second Scope connection will be made at B41 and Chassis Ground The Ramp Up Adjustment will correct the pitch of the Top Ramp Failure to properly align this adjustment will result in misfiring Pixels The V SET DOWN Adjustment will correct the pitch of the Bottom Ramp Failure to Properly align this ...

Page 53: ...53 Plasma Display Panel Troubleshooting 2007 Y SUS 60PC1D Panel Waveform Adjustment Z SUS Y SUS Y SUS Troubleshooting ...

Page 54: ... washes out due to decreased Vset_DN time NOTE this can create a no pix condition but audio is present The center begins to wash out and arc due to decreased Vset_DN time Vset_DN too low Vset_DN too high 60PC1D Y SUS Board Panel Waveform Adjustment Troubleshooting ...

Page 55: ...wash out and ark due to VY running to long and clipping Colors and the image will bloom slightly and the unit will have difficulty with clean frame changes in a quickly altering image VY too low VY too high 60PC1D Y SUS Board Panel Waveform Adjustment Troubleshooting ...

Page 56: ...high The image will show very little change but there will Be some distortion in a quickly changing image The image will show very little change but there will Be some distortion in a quickly changing image 60PC1D Y SUS Board Panel Waveform Adjustment Troubleshooting ...

Page 57: ... generate Sustain Waveform Troubleshooting Distributes 5v VA VS Distributes 5v Logic signals needed to generate drive waveform Distributes 5v VA Receive 5V Va Vs from SMPS Transfer Waveform to Y Drive Board Z SUS Board Top and Bottom Center and Left X Boards Display Panel Power Supply Board SMPS FETs amplify Sustain Waveform 60PC1D Y SUS Board ...

Page 58: ...re are two IPMs used in 60PC1D on the Y Sustain Board 1 SUS IPM IC7 2 ER IPM IC2 Role of IPMs on the Y SUS Board 1 Generate Sustain Waveform square wave SUS IPM 2 Energy Recovery Function for saving power ER IPM SUS_DN SUS_DN SUS_UP ER_UP ER_DN Troubleshooting 60PC1D Y SUS Board ...

Page 59: ...GRND Reverse Diode Test 1 GND Sus out 2 Sus out Vs 3 ER DN GRND 0 99 4 GRND ER UP 0 99 5 18v GRND 1 3 6 5v GRND 0 9 Note ER_HIGH ER_LOW to ER_lO OPEN in Diode Check How to check IPM Resistance Diode Check board removed from set Troubleshooting 60PC1D Y SUS Board Test Points referenced from the silk screen found on the bottom of the PC Board ...

Page 60: ...he Presentation will cover troubleshooting the Y Drive Boards for the 60PC1D Dual Scan Plasma Display Upon completion of this Section the technician will have a better understanding of the operation of the circuits and will be able to locate voltage and resistance test points needed for troubleshooting ...

Page 61: ...veform and Reset waveform which are made in Y SUSTAIN B D and sent to the Panel through SCAN DRIVER IC s The Y Drive Boards supply a waveform which selects the horizontal electrodes sequentially 60PC1DR uses 12 DRIVER ICs on 2 Boards TOP BOTTOM 6 each 60PC1D Y Drive Boards Troubleshooting Bottom Drive Board ...

Page 62: ...y lift the Locking Tab from the back and tilt it forward lift from the outside edge as shown in Fig 1 Gently slide the Ribbon Cable free from the connector Fig 1 To reinstall the Ribbon Cable carefully slide it back into the slot see Fig 2 be sure it is seated securely and press the Locking Tab back to the locked position see Fig 3 Fig 2 Fig 3 ...

Page 63: ...ards Floating Ground Bottom Drive Board Y Drive Signal input P16 P19 P20 P21 P6 P7 P1 15 Volts at Connector P1 Pins 2 and 3 must be measured with relation to Floating Ground measuring from the wrong ground will result in an erroneous reading P3 Floating Ground Q504 Q505 Q506 Q507 ...

Page 64: ...007 Incoming Logic Signals and 15V Supply Floating Ground Incoming Drive Signal 60PC1D Y drive Board Block Diagram Bottom Y Drive Board Troubleshooting Q506 Q507 Q505 Q504 IC2 IC15 P1 P3 IC11 IC14 IC12 IC25 IC27 IC13 P16 P19 P20 P21 P6 P7 15V ...

Page 65: ...hnician will have a better understanding of the circuit and be able to locate voltage and resistance test points needed for troubleshooting and alignment DC Voltage and Waveform Test Points Z BIAS Alignment Resistance Test Points Operating Voltages Y SUS Supplied VA 60v VS 196v 5v Developed on Z SUS Z Bias 165v SUS_IPM ER_IPM IPM 18v Troubleshooting 60PC1D Z SUS Board ...

Page 66: ...P9 pin 5 for the right top and bottom X driver boards 5v 5v is used to Bias the circuits on the Z_ SUS Board 5v also feeds connectors P1 pin 3 and P9 pin 3 for the right top and bottom X boards Voltages Developed on the Z SUS Board Z Bias 165v is used to Bias the output circuits driving the Sustain and Erase Pulses removing previous images from the PDP Z bias is measured from the Vzb TP on the Z S...

Page 67: ...9 5v VA 5 0 5 60 0v VA 5 0 6 0 6 0 7 0 7 0 8 3 0v 8 2v 9 0 9 59 9v 10 1 85v 10 59 9v 11 0 11 193v 12 0 12 193v P9 P1 P2 P12 1 0v GND 2 0v GND 3 5 1v 5V 4 0 NC 5 60v VA P1 1 0v GND 2 0v GND 3 5 1v 5V 4 0 NC 5 60v VA P9 IC7 SUS IPM IC2 ER IPM P9 P1 P12 P3 P5 P6 P2 Pin 1 TP134 145 Z_SUS TP179 TP 0 Y Z SUS in sync Z BIAS Troubleshooting 60PC1D Z SUS Board ...

Page 68: ...l Troubleshooting 2007 60PC1D Z SUSTAIN Board IC3 ER IPM IC7 SUS IPM Vzb Z BIAS TP Z BIAS Adjust Control SUS signal TP B11 Timing Data and control signals Troubleshooting P9 VA 5V GND GND VS VA and 5V in from the Y SUS Board ...

Page 69: ...y Panel Troubleshooting 2007 ZBIAS adjustment On the Z Sustain PCB With the DVM connected to Vzb reference to chassis ground adjust the potentiometer till the DVM reads 93 vdc DVM 60PC1D Z SUSTAIN Board Troubleshooting ...

Page 70: ...Signals to the Z SUS Board at P2 come from the Control Board and pass through the Top Center and Right X Drive PWBs Connector P2 feeds the Input Signals to IC1 and IC24 which drive the IPMs These Signals are used to develop the Z SUS Drive Waveform to drive the PDP Display Troubleshooting ...

Page 71: ...ting 2007 NOTE These voltages will vary due to changes in design and variations in the PDP panel 60PC1D Z SUS Board Waveform inputs from the Control Board Troubleshooting TP144 TP134 TP135 TP136 TP137 TP138 TP140 TP141 TP142 TP143 TP145 ...

Page 72: ...US_DN SUS_UP Gnd 18VDC Chassi GND SUS_OUT VS 5VDC 18V IPM P1 P12 IC1 IC24 P9 5VDC VA VA 5VDC R42 5VDC VA Z Bias Circuit Z Bias Control VR3 Q16 Q18 D9 D10 D17 P6 To PDP Output Waveform TP To PDP To PDP VS P5 P3 Logic from the Control PCB D8 Z 95 V 95V Vs Vs Z 95 V 95V Vs Vs Z 95 V 95V Vs Vs B11 60PC1D Z SUS Block Diagram C18 ...

Page 73: ... and ERASE PULSE for generating SUSTAIN discharge in the panel by receiving LOGIC signals from the CONTROL B D This waveform is supplied to the panel through FPC Flexible Printed Circuit Z Probe connect point to Oscilloscope to check Z wave form Troubleshooting Z DRIVE Waveform Z 95 V 95V Vs Vs ...

Page 74: ...ght Top and Bottom Distribute 5v VA IPM generates erase sustain waveforms Generates Z Bias 18v IPM Vcc Distributes Logic Signals Distributes 5v VA VS FET Makes Drive waveform Display Panel Via FPC flexible printed circuit Troubleshooting Control Board Receive 5v VA VS Y SUS Board ...

Page 75: ... Two IPMs Intelligent Power Modules on the Z sustain board One is SUS IPM IC7 another is ER IPM IC3 Role of the IPMs 1 Generate sustain and erase waveform square wave SUS IPM 2 Energy recovery function for saving power ER IPM SUS_DN SUS_DN SUS_UP ER_UP ER_DN Z 95 V 95V Vs Vs Troubleshooting ...

Page 76: ...oting 2007 Defect display Dark display IPM Fail If the cable was not connected There is no display P2 Cable connection Part Description of defect Defect name Dark display Major defect IPM fail cable connection No display Troubleshooting ...

Page 77: ...surements use any PCB mounting screw for Ground Measurements made with the board disconnected negative lead of the meter to ground VS 6 meg VA 5 meg 5v 3 3 meg B11 to Chassis Ground 5 meg Chassis Ground to SUS_OUT 4 meg SUS_OUT to VS 2 7 meg ER low to ER 10 4 9 meg ER 10 to ER High 2 7 meg 18v to Chassis Ground 7 9K SUS_UP to Chassis Ground 10K SUS_DN to Chassis Ground 1 3meg ER_UP to Chassis Grou...

Page 78: ...l cover the Control Board for the 60PC1D Dual Scan Plasma Display Panel Upon completion of this section the Technician should have a better understanding of the Circuit and be able to locate Test Points and Voltages necessary for troubleshooting Troubleshooting 60PC1D Control Board ...

Page 79: ... P1 D33 D32 D31 TP1 TP19 D2 D1 R1Out 00 13 TP 39 52 G1Out 00 13 TP 53 66 B1Out 00 13 TP 67 80 R2Out 00 13 TP 81 94 G2Out 00 13 TP 95 108 B2Out 00 13 TP 109 122 Addr_STB TP 131 Mis_Flag_Out TP 130 VS DA TP 129 Blank_DA TP 128 RAS_Data1 TP 127 RAS_Data2 TP 126 RAS_STB1 TP 125 Solder filled TP TP 124 RAS_STB2 TP 123 TP148 TP177 IC42 IC46 IC44 IC24 60PC1D Control Board Test Points and Voltage Distribu...

Page 80: ... DRIVER B D by receiving 8 bit R G B input Power 3 3V 5V Temperature display diode can be checked Left picture shows 7 periods which means normal temperature Green OFF Yellow ON D15 8 Weight D16 4 D17 2 D18 1 Voltage Regulator MCM Micro Control Module Troubleshooting CONTROL Board TEST Pattern AUTOGEN P4 Connector LG Part Number Label Voltage Regulator ...

Page 81: ... IC No picture Oscilator No display or Partly no display Connector Part Description of defect Defect part Main Defect MCM connector oscilator LVDS poor connection Voltage used 3 3V 3 3V 3 3V 2 4V 1 8V 5 separate operating voltages MCM Connector Oscillator Partly no display Poor connection 60PC1D Control Board Display Lines Replace Control Board Reseat Control Board Connectors Replace Control Board...

Page 82: ...Control Board to X Board Address Signal Flow This will show Signal Flow Distribution to help determine the failed part depending on where the failure is on the screen The Control Board supplies the Video Signal to the TCP ICs If there is a bar defect on the screen it could be a Control Board problem 16 line Troubleshooting MCM Array ...

Page 83: ...rstanding of the Circuits which make up X Drive and will be able to locate all the voltage test points The X Drive Boards consist of 3 Top and 3 Bottom Boards which are all similar in operation therefore the Top Center Board will be considered here Outputs from all the X Boards drive TCP ICs Tape Carrier Package located on the Ribbon Cable which goes into both the top and bottom of the Display Pan...

Page 84: ... VA The Z SUS Board supplies both the Right Top and Bottom X Boards VA The Y SUS Board supplies both the Left Top and Bottom and the Center Top and Bottom X Boards 5v The Z SUS Board supplies the Right Top and Bottom X Boards 5v The Y SUS Board supplies the Left Top and Bottom and the Center Top and Bottom X Boards ...

Page 85: ...ting 2007 TCP Tape Carrier Package TCP IC Front side Behind side Supplies RGB 6bit signal to the PDP by connecting the PAD Electrode of the PANEL with the X Board IC Defect Frame X_B D Front panel TCP Rear panel Connector Troubleshooting ...

Page 86: ...Left X Board 60PC1D X Drive Boards Troubleshooting RGB Logic Signals For the Top Center and Right X Boards are supplied from the Control Board Logic Signals for the Z Sus Board are also Supplied here Out to the TCP ICs RGB Logic Signals For the Right Top X Board and Z SUS Logic Signals ...

Page 87: ... to TCP IC 1 50 1 NC VA 7 8 9 15 Thru 24 25 28 Grnd 29 Thru 36 45 46 NC VA 42 43 44 37 Thru 39 Grnd Connections on Connector P205 60PC1D Center Top X Board RGB Logic Signals RGB Logic Signals B203 VA GND 2 3 4 5 6 NC 10 11 NC 12 13 14 Ground 40 41 NC 47 48 49 Ground NC ...

Page 88: ...203 output to TCP ICs P208 P207 P206 P205 P204 P203 P202 P201 P209 P210 P212 VA D201 D202 D203 D204 P211 Logic Signals Output to Right Top X Board and the Z SUS Board R254 R255 R256 R257 R250 R251 R252 R253 R246 R247 R248 R249 R242 R243 R244 R245 B204 B203 B202 B201 IC201 IC202 IC203 C209 FS201 FL201 5V OUTPUT to the TCP ICs To P211 ...

Page 89: ... Board Troubleshooting This Section of the Presentation will cover the Main Board Upon completion the Technician will have a better understanding of the Signal Sources that are Processed by this Board and the will be able to confirm its operation Main Board ...

Page 90: ...ooting 2007 Troubleshooting 60PC1D Main Board Antenna Cable Input HDMI Inputs RS232 LVDS Signals S Video P4004 P4005 P4003 R Speaker L Speaker Fans Computer Input Component Inputs Audio Video Inputs Digital Audio Tuner BCM3550 IC 1001 ...

Page 91: ...DRAM 256Mbit X tal 54MHz Reset IC D class AMP Sub Micom MTV416 Sub Micom MTV416 EEP ROM HDMI Component RGB PC Audio 부 Tuner부 Comp_1 LR Comp_2 LR RGB Phone LR AUDIO ADC Audio R L I2S I2S Audio Input MST336 1 R G B H V Sync DVI Input Digital Output SDRAM 256Mbit x2 DDS Data 24 Hsync Vsync DE Clk 2X1 S W 2X1 S W HDCP IIC TMDS DDS SPDIF Y C IF P N for DTV SIF for NTSC SIF for NTSC USB for upgrade S W ...

Page 92: ...03 OUT3 Side AV V LR Rear AV V LR Rear S YC LR Side S YC LR IN1 IN4 IN1 IN4 IN3 IN4 Comp_1 LR Comp_2 LR RGB Phone LR BCM3550 SD_Y SD_C ANT Cable TV IN CVBS from TUNER FMS6400 Y CVBS C OUT1 Y OUT1 C M_CVBS Y C M_CVBS C Y LPF for CVBS SD_CVBS TUNER IF_P IF_N IF_P from TUNER for DTV IF_N from TUNER for DTV Troubleshooting ...

Page 93: ...ut2 Pb B to LPF 3 Out1 Pr R to LPF L H IC5001 IC5002 Y G 3 YIN Pb B 5 PBIN Pr R 7 PBIN 1 EXT_SYNC 18 SYNC_IN 16 Comp_Y 15 Comp_Pb 14 Comp_Pr 44 GIN 43 SOGIN 41 BIN 46 RIN IC704 IC4009 RGB_G H Sync 7404 V Sync RGB_B RGB_R BCM3550 GPIO GPIO for sync selection HD DVI Data 24 H sync V sync DE Clock H V Sync Clock RGB_HS GPIO for sync selection RGB_HS RGB_VS RGB_HS RGB_VS GPIO GPIO for Component GPIO G...

Page 94: ...r detection GPIO GPIO for Hot plug detection IC1001 MST3361 TMDS1 RX0 TMDS1 RX1 TMDS1 RX2 TMDS1 RX3 DDC SDA1 DDC SCL1 EEPROM For EDID DDC SDA1 DDC SCL1 TMDS1 INPUT DDC1 INPUT TMDS2 RX0 TMDS2 RX1 TMDS2 RX2 TMDS2 RX3 DDC SDA2 DDC SCL2 EEPROM For EDID DDC SDA2 DDC SCL2 TMDS2 INPUT DDC2 INPUT HDCP SDA HDCP SCL EEPROM For HDCP NDA NCL INT DATA_OUT H V Sync DE Clock HDMI 1 HDMI 2 Troubleshooting ...

Page 95: ...2S_LRCH_IN I2S_LRCK_IN I2S_SCK_IN I2S_LRCH_IN I2S_LRCK_IN SPDIF_IN_P SPDIF from MST3361 _R MNT_Out AUDIO DAC CS4344 I2S_SCK_OUT I2S_LRCH_OUT I2S_LRCK_OUT I2S_SCK_OUT I2S_LRCH_OUT I2S_LRCK_OUT _L MNT_Out Analog L_OUT Audio AMP TPA3100 SPDIF Out SPDIF_OUT_P AUD_LEFT_P AUD_LEFT_N AUD_RIGHT_N AUD_RIGHT_P SPK_L_P SPK_L_N SPK_R_N SPK_R_P Analog R_OUT MC3307 OP AMP Audio signal path Block Diagram IF_P fr...

Page 96: ...ure Sound Ok 1 To check LED light on the CTRL B D 2 To Check input cable from power to signal and CTRL B D 3 To check connection from power to X_B D Y B D Z B D 4 To check connection from CTRL B D to X B D Y B D Z B D 5 To check fuse on Y Z B D and IPM 6 Examine Scan IC s Î Î Î Î Î ...

Page 97: ...a Display Panel Troubleshooting 2007 Replace CTRL Regular vertical lines on R G B Replace CTRL Regular vertical lines Replace CTRL Regular vertical lines Cause defects description picture MCM defect on CTRL B D ...

Page 98: ... Troubleshooting 2007 Replace CTRL Color spread on R G B Replace CTRL or X Drive PCB Vertical bar on R G B Open Replace CTRL or X Drive PCB Vertical bar on R G B short Cause defects description picture MCM defect on CTRL B D ...

Page 99: ...ay Panel Troubleshooting 2007 Replace CTRL Vertical Lines Copied Replace CTRL Distortion Replace CTRL Abnormal on Top or Bottom screen only for Dual Scan model Cause defects description picture MCM defect on CTRL B D ...

Page 100: ...ing 2007 Replace CTRL Data Noise Replace CTRL or X Drive PCB A vertical line from bottom 4005A MCM model Replace CTRL or X Drive PCB A vertical line from top only for 4005A MCM model Cause defects description picture MCM defect on CTRL B D ...

Page 101: ...CTRL B D Abnormal display Check power to and on the control PCB if ok replace CTRL B D To check cable connection on the control and X PCB s Replace CTRL B D Cause raining Full or partly No image picture Phenomenon Failure parts Related CTRL B D defects MCM Connector Oscillator Connector No LED light ...

Page 102: ...d or Y DRV Disconnect each Y_DRV PCB one at a time and retest unit Check supply to X boards Y SUS To replace Y SUS To replace Y SUS or Y DRV Cause Y SUS Y SUS abnormal display Y SUS Check signal and voltage on Y SUS and Y DRV if ok replace Y SUS and or Y DRV Disconnect each Y_DRV PCB one at a time and retest unit Y SUS Y DRV defects description picture failure ...

Page 103: ...Y DRV Re seat connectors To replace Y DRV Replace Y DRV Cause defects parts Abnormal display connections between Y DRV and Y SUS connect or Abnormal picture Disconnect each Y DRV PCB one at a time and retest unit Y DRV Horizontal bar Disconnect each Y DRV PCB one at a time and retest unit Y DRV defects description picture failure Y DRV ...

Page 104: ...CTRL b d To replace X B D after checking cable and connection Replace Z SUS Cause Many vertical lines Partly abnormal display Dark Picture Check for supply voltages and Y SUS Z SUS waveforms CTRL X_B D Z SUS defects description picture failure Z SUS others ...

Page 105: ...Probe like Pic 2 2 To sweep Probe on the connector like Pic 3 3 If there are short between GND and a pin it is failure of the scan ic Î To replace Y DRV Pic 2 Pic 3 Pic 4 1 Diode value comes 0 4 0 6 Î Y DRV OK 2 Less than 0 4 Î to replace Y DRV board Checking method of Y DRV Ex 50X3 Phenomenon GND ...

Page 106: ...ay of screen 1 To check power connector of the X B D 2 To check connectors between CTRL B D and X B D 3 To replace the X B D 4 Be sure the connection of TCP after X B D replacing relation between screen and X B D Screen X B D left Right X B D Pic 1 right Left X B D Pic 2 Pic 1 Pic 2 ...

Page 107: ... 2 Sus out Vs In each test the Diode value are over 0 4V Î OK Î probe Î probe 2 Reverse test 1 GND Sus out test2 Sus out Vs In each test the diode value comes infinity Î OK Î probe Î probe EX 42V7 model Checking method of IPM Pic 1 Pic 2 Probe Pic 3 Probe Pic 4 DMM mode Phenomenon ...

Page 108: ... drive top and bottom Supply waveform on panel for operation FET driving signal to make Z waveform 5V supply To supply Va Vs to Y and Z board 5V 15V for IC and FET driving RGB Video signal FET driving signal to make the Y waveform Supply Va 5V to X B D Role Cable Cables roles ...

Page 109: ...defects The cable between Y DRV TOP and Y DRV Bottom Î It is for a model of which Y DRV is separated TOP and Bottom board The cable between Y SUS and Y DRV The cable connection Between Y SUS Z SUS CTRL B D and X B D Connection defect by Cable Phenomenon ...

Page 110: ...110 Plasma Display Panel Troubleshooting 2007 60 X PSU Characteristics from EAY32961901 EAY32961801 Input requirements Output Characteristics ...

Page 111: ... ADJ VS SUPPLY 190V ADJ VS SUPPLY 190V ADJ VS SUPPLY 190V ADJ VA SUPPLY 60V ADJ 3 4V SUPPLY MULTI_ON 3 4V_ON RL2 RL1 AC_DET NC GROUND NC GROUND GROUND P814_2 AC NEUTRAL PFC P817_2 6V SUPPLY 12V SUPPLY GROUND VCC1 AC NEUTRAL AC LINE AFTER RL102 P815_2 6 5V SUPPLY 6 5V SUPPLY P816_2 PFC_DET STBY5V SUPPLY Sound SUPPLY 19 AC LINE AFTER RL102 GROUND 6 5V SUPPLY 60 X PSU Adjustment Points and Distributi...

Page 112: ...LY 8 GROUND 7 3 4V SUPPLY 6 GROUND 5 6V SUPPLY 4 GROUND 3 GROUND VR251 3 4V ADJ 2 19V SOUND SUPPLY 1 19V SOUND SUPPLY AC LINE 1 NC 2 AC NEUTRAL 3 RL1 RL2 3 4V_ON MULTI_ON AC NEUTRAL NC P815_1 GROUND 12V SUPPLY 6V SUPPLY 3 4V SUPPLY STBY5V SUPPLY PFC_DET AC_DET AC NEUTRAL P816_1 6 5V SUPPLY 6 5V SUPPLY 6 5V SUPPLY P814_1 P813 AC LINE AFTER RL102 GROUND GROUND GROUND SOUND SUPPLY 19V AC LINE AFTER R...

Page 113: ...HARGER 19V DISCRETE REG 12V IC REGULATOR ON OFF DISCRETE 5V DISCRETE REG 5V IC REGULATOR 3 4V DC DC CONVDERTER RECTIFIER BRIDGE POWER RELAY S AC INPUT VCC1 P18V VCC 1 AC_DET PFC_DET 19V 6 5V 6V 5V STBY5V 3 4V 12V VA VS VS_OCP VS_DET SOUND 12V 6V 5V MULTI_ON M5V_ON 3 4V_ON VS_ON STBY_ON DISCHARGE VA_DET PFC_ON RL1 RL2 P18V P18V 3 4V 5V_MNT R750 D125 D130 D126 D601 6 5V 6 5V only 60 X PSU ...

Page 114: ...ut Input 3 5V SOUND 26 Input Input 4 6V STBY_ON 25 Out VDD 5 VDD VSS 24 GND Input 6 VS_OCP RESET 23 Input Out 7 DISCHARGE XOUT 22 Out Out 8 M5V_ON XIN 21 Input Out 9 3 4V_ON VS_ON 20 Out Out 10 MULTI_ON PFC_ON 19 Out Input 11 3 3V_ON_IN PFC_DET 18 Input Input 12 5V_ON_IN AC_DET 17 Input Input 13 VS_ON_IN RL1 16 Out Input 14 RL_ON AC_ON 15 Out U701 MC80F0308 Signals From To Main Chassis Signals Fro...

Page 115: ...MAX PDIP 7 CONTROLLER NCP1217AP100G U151 MULTI OUTPUT CONVERTER NEC CTR 200 400 DIP 4PIN PHOTO COUPLER PS2571L1 1 V A PC601 NEC CTR 200 400 DIP 4PIN PHOTO COUPLER PS2571L1 1 V A PC502 KEC SHUNT REGULATOR VREF 2 470 2 520V TO 92 LINEAR IC KIA431A AT P KEC U122 INFINEON N CHANNEL 600V 20A TO 247 MOSFET SD20N60 Q601 Q602 Q603 Q604 ON SEMICONDUCTOR PFC CONTROLLER FIXED FREQUENCY 67 kHz PDIP 8 CONTROLL...

Page 116: ... L6598 U851 LITTELFUSE 5A 250V 5X20MM SLOW BLO FUSE 215005 F851 VS CONVERTER ST MICROELECTRONICS N CHANNEL 900V 5 8A TO 220F MOSFET STP6NK90ZFP Q801 SMART ELECTRONICS INRUSH CURRENT PROTECTOR 250V 3A00 V TYPE 0 16 OHM FUSING RESISTOR ICP250 3A00 R809 KEC SHUNT REGULATOR VREF 2 470 2 520V TO 92 LINEAR IC KIA431A AT P KEC U901 NEC CTR 200 400 DIP 4PIN PHOTO COUPLER PS2571L1 1 V A PC901 FAIRCHILD SMP...

Page 117: ...play Panel Troubleshooting 2007 60 X PSU AC Input and Voltage for Multi Output Converter D125 CATHODE VOLTAGE FOR MULTI OUTPUT CONVERTER D126 ANODE D126 ANODE D125 CATHODE D126 ANODE D125 CATHODE AC PLUG I N TURN ON ...

Page 118: ...g 2007 60 X PSU Multi Output Converter D156 CATHODE Q151 DRAIN U601 PIN 6 U601 PIN 5 D156 CATHODE Q151 DRAIN U601 PIN 6 GATE U601 PIN 5 VDD D156 CATHODE Q151 DRAIN U601 PIN 6 GATE U601 PIN 5 VDD STAND BY MOD E WORKING MO DE FROM D125 CATHODE ...

Page 119: ...ut Input 3 5V SOUND 26 Input Input 4 6V STBY_ON 25 Out VDD 5 VDD VSS 24 GND Input 6 VS_OCP RESET 23 Input Out 7 DISCHARGE XOUT 22 Out Out 8 M5V_ON XIN 21 Input Out 9 3 4V_ON VS_ON 20 Out Out 10 MULTI_ON PFC_ON 19 Out Input 11 3 3V_ON_IN PFC_DET 18 Input Input 12 5V_ON_IN AC_DET 17 Input Input 13 VS_ON_IN RL1 16 Out Input 14 RL_ON AC_ON 15 Out U701 MC80F0308 Signals From To Main Chassis Signals Fro...

Page 120: ...120 Plasma Display Panel Troubleshooting 2007 Troubleshooting Power Supply Supplements for previous Spring 2007 Meetings ...

Page 121: ...121 Plasma Display Panel Troubleshooting 2007 Troubleshooting LG Power Supplies Troubleshooting ...

Page 122: ...niques employed in Flat Screen LG Plasma and LCD Display Power Supplies Upon Completion of this section the Technician will be able to confirm the condition of the Power Supply with great accuracy and be able to confirm normal operation without circuit board replacement Troubleshooting Power Supply ...

Page 123: ...0 and VA between Pins 1 and 5 to be sure there are no short circuits the resistance should be in the Meg Ohm Range Step 3 Connect the resistors and Light bulbs as shown in the Diagram PG 6 and apply AC Power The Power Supply should output all the voltages necessary to operate the unit Failure of normal operation at this point indicates Circuit Board Repair or Replacement This Troubleshooting Proce...

Page 124: ... 1 AC D 2 RL ON 3 S 5V 4 GND 5 VS ON 6 5V D 7 M5V ON 8 S 5V 9 GND 10 NC 11 6V 12 N C 13 3 3ON P800 PIN1 P803 PIN 1 P803 1 3 3V 2 3 3V 3 GND 4 GND 5 6V 6 6V 7 GND 8 GND 9 12V 10 12V 11 GND 12 GND P802 PIN 1 P802 1 19V 2 19V 3 GND 4 GND 5 6V 6 GND 7 3 3V 8 GND 9 12V 10 GND Troubleshooting ...

Page 125: ...DC P800 1 AC D 2 RL ON 3 S 5V 4 GND 5 VS ON 6 5V D 7 M5V ON 8 S 5V 9 GND 10 NC 11 6V 12 N C 13 3 3ON P800 1 13 1 2 3 4 5 6 12 11 10 9 8 7 13 100 Ohms Watt 1000 Ohms Watt P800 2 60 Watt Light Bulbs connected in series Troubleshooting Pin 5 Pin 10 50PC1DR Plasma Display P803 P802 1 1 10 12 ...

Page 126: ...dby P202 pin 3 and AC Detect P202 Pin 1 Remove Power if both are present proceed to Step 3 Step 3 Place 100 Ohm watt resistor as shown in the Diagram PG 8 between RL ON Pin 3 and 5v Standby VCC Pin 15 on the Sub Micon Board and apply AC Power The 6v and 12v Supplies see PG 9 for their locations should now be present Remove Power Step 4 Install a 1K Ohm watt resistor as shown in the Diagram PG 9 be...

Page 127: ...bleshooting 2007 P202 P201 P200 Sub Micon Board SC100 AC INPUT 100 OHMS Pin 3 RL ON Pin 15 5v Standby 5v Standby Pin 3 3 3v ON Pin 13 Power Supply Board 47LB1 1K OHM Troubleshooting T101 T102 P206 P203 P205 P204 Resistors are watt ...

Page 128: ...Troubleshooting Power Supply Sub Micon 1 5 9 16 1 RLY ON 2 ACD ON 3 RLY ON OFF 4 ACD 5 MULTI ON OFF 9 24V ON OFF 10 3 4V DET 11 19V DET 12 12V DET 13 6V DET 14 24V DET 15 5V STB VCC 16 GND Connect a 100 Ohm Watt Resistor from pin 3 to pin 15 as indicated ...

Page 129: ...3 ST5V 5 INV CTRL 6 ERR_OUT 7 BRT_CTRL 8 ST5V 9 GND 10 PWR_DIMM 11 6V 12 GND 13 3 4V_ON 1 19V 2 19V 3 GND 4 GND 5 6V 6 GND 7 3 4V 8 GND 9 12V 10 GND 1 3 4V 2 3 4V 3 GND 4 GND 5 6V 6 6V 7 GND 8 GND 9 12V 10 12V 11 GND 12 GND P200 P201 P202 1 12 1 10 1 13 3 Connect 1K Ohm Watt Resistor from Pin 3 to Pin13 of P202 ...

Page 130: ...130 Plasma Display Panel Troubleshooting 2007 The End Thank You Troubleshooting Collection By Pravin Mevada ...

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