Owners Manual
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Troubleshooting Overview of Topics to be Discussed •Switch Mode Power Supply •Y SUS Board •Z SUS Board •X Drive Boards Plasma Display Panel Troubleshooting - 2007 2
Troubleshooting Overview of Topics to be Discussed •Switch Mode Power Supply •Y SUS Board •Z SUS Board •X Drive Boards Plasma Display Panel Troubleshooting - 2007 2
Owners Manual
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... 1 and 2 of connector P804 to chassis ground. Adjusted at VR221. • 19v Applied to the Analog Board and used for the circuits on the Y SUS, Z SUS, X, and Control Boards. Measured at P800 pin 3 applied to the Digital Board. • VS- Measured at P803 pins 5 and 6 to chassis ground....and 10 to chassis ground. • 6v Applied to the Digital Board used to drive the Vertical Grid Voltage, X Boards and in standby. Plasma Display Panel Troubleshooting - 2007 7 Switch Mode Power Supply (SMPS) Voltages Troubleshooting • VS 196v used to bring the Power Supply out of ...
... 1 and 2 of connector P804 to chassis ground. Adjusted at VR221. • 19v Applied to the Analog Board and used for the circuits on the Y SUS, Z SUS, X, and Control Boards. Measured at P800 pin 3 applied to the Digital Board. • VS- Measured at P803 pins 5 and 6 to chassis ground....and 10 to chassis ground. • 6v Applied to the Digital Board used to drive the Vertical Grid Voltage, X Boards and in standby. Plasma Display Panel Troubleshooting - 2007 7 Switch Mode Power Supply (SMPS) Voltages Troubleshooting • VS 196v used to bring the Power Supply out of ...
Owners Manual
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... 115v. -VY -196v. IPM 18v. ER IPM SUS IPM Ramp UP V SET DN V SET UP Plasma Display Panel Troubleshooting - 2007 11 Troubleshooting Y SUSTAIN BOARD Troubleshooting This Section of the circuit and will cover troubleshooting the Y SUS Board for troubleshooting and alignments. • Adjustments • DC Voltage and Waveform Checks • Resistance Measurements Operating... will have a better understanding of the operation of the Presentation will be able to locate voltage and resistance test points needed for the Single Scan Plasma. VS 196v. 5v.
... 115v. -VY -196v. IPM 18v. ER IPM SUS IPM Ramp UP V SET DN V SET UP Plasma Display Panel Troubleshooting - 2007 11 Troubleshooting Y SUSTAIN BOARD Troubleshooting This Section of the circuit and will cover troubleshooting the Y SUS Board for troubleshooting and alignments. • Adjustments • DC Voltage and Waveform Checks • Resistance Measurements Operating... will have a better understanding of the operation of the Presentation will be able to locate voltage and resistance test points needed for the Single Scan Plasma. VS 196v. 5v.
Owners Manual
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Measured at the VSC test points. • -VY -196v Used to shape the Y Drive waveform by setting the V Scan level. Check VSC Check -VY Plasma Display Panel Troubleshooting - 2007 12 Important Note Troubleshooting • The following voltages and waveforms should be adjusted in the order they are presented. • Always ... Voltmeter make sure the -VY and VSC are the same as the Voltage Label on the upper right side of the PDP. Voltmeter Adjustments to Y SUS • VSC 115v Used to most accurately set the Plasma Display Panel.
Measured at the VSC test points. • -VY -196v Used to shape the Y Drive waveform by setting the V Scan level. Check VSC Check -VY Plasma Display Panel Troubleshooting - 2007 12 Important Note Troubleshooting • The following voltages and waveforms should be adjusted in the order they are presented. • Always ... Voltmeter make sure the -VY and VSC are the same as the Voltage Label on the upper right side of the PDP. Voltmeter Adjustments to Y SUS • VSC 115v Used to most accurately set the Plasma Display Panel.
Owners Manual
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SMPS Receive 5V,Va, Vs from SMPS Distributes 5v IPM generates Sustain Waveform Generates Vsc, -Vy from 5v VA Vs by transformer. Bottom Left X Board FETs amplify Sustain Waveform Troubleshooting Control Board Logic signals needed to generate drive waveform Transfer Waveform to Y Drive Board Display Panel Plasma Display Panel Troubleshooting - 2007 22 Diagram of Y Sustain Board Y Sustain Board Z SUS Board Distributes 5v VA VS Distributes 5v VA Power Supply Board -
SMPS Receive 5V,Va, Vs from SMPS Distributes 5v IPM generates Sustain Waveform Generates Vsc, -Vy from 5v VA Vs by transformer. Bottom Left X Board FETs amplify Sustain Waveform Troubleshooting Control Board Logic signals needed to generate drive waveform Transfer Waveform to Y Drive Board Display Panel Plasma Display Panel Troubleshooting - 2007 22 Diagram of Y Sustain Board Y Sustain Board Z SUS Board Distributes 5v VA VS Distributes 5v VA Power Supply Board -
Owners Manual
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ER IPM. SUS IPM. 2. SUS IPM (IC202) 2. IPM (Intelligent Power Module) Troubleshooting SUS_UP ER_UP ER_DN SUS_DN SUS_DN There are two IPMs used in 50PC1DR on the Y Sustain Board. 1. Plasma Display Panel Troubleshooting - 2007 23 Generate Sustain Waveform (square wave) - ER IPM (IC201) Role of IPMs 1. Energy Recovery Function (for saving power) -
ER IPM. SUS IPM. 2. SUS IPM (IC202) 2. IPM (Intelligent Power Module) Troubleshooting SUS_UP ER_UP ER_DN SUS_DN SUS_DN There are two IPMs used in 50PC1DR on the Y Sustain Board. 1. Plasma Display Panel Troubleshooting - 2007 23 Generate Sustain Waveform (square wave) - ER IPM (IC201) Role of IPMs 1. Energy Recovery Function (for saving power) -
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GRND ( + ), ER-UP ( - ) 5. 18v ( - ), ER GRND ( + ) 6. 5v ( - ), ER GRND ( + ) Reverse Test : 1. Sus-out ( - ), Vs (+) 3. GND (+), Sus-out ( - ) 2. ER-DN (+), GRND ( - ) 1.4 4. How to ER_lO OPEN in Diode Check Plasma Display Panel Troubleshooting - 2007 24 Troubleshooting Sus-out (+), Vs ( - ) 3. GRND ( - ), ER-UP ( + ) 1.4 5. 18v ( + ), GRND ( - ) 1.9 6. 5v ( + ), GRND ( - ) .9 Note: ER_HIGH ER_LOW, to check IPM (Resistance...
GRND ( + ), ER-UP ( - ) 5. 18v ( - ), ER GRND ( + ) 6. 5v ( - ), ER GRND ( + ) Reverse Test : 1. Sus-out ( - ), Vs (+) 3. GND (+), Sus-out ( - ) 2. ER-DN (+), GRND ( - ) 1.4 4. How to ER_lO OPEN in Diode Check Plasma Display Panel Troubleshooting - 2007 24 Troubleshooting Sus-out (+), Vs ( - ) 3. GRND ( - ), ER-UP ( + ) 1.4 5. 18v ( + ), GRND ( - ) 1.9 6. 5v ( + ), GRND ( - ) .9 Note: ER_HIGH ER_LOW, to check IPM (Resistance...
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... Logic signals to Y Drive Boards to sequentially scan the Horizontal Grid floating ground 64v Y SUS output 64v floating ground 18v IPM Measured at R61 Oscilloscope Waveform adjust test point Plasma Display Panel Troubleshooting - 2007 P2 27 P11 to Z SUS Board 5v VA VS Troubleshooting ER_IPM (IC201) P1 VA Ground VS P5 5v Ground...
... Logic signals to Y Drive Boards to sequentially scan the Horizontal Grid floating ground 64v Y SUS output 64v floating ground 18v IPM Measured at R61 Oscilloscope Waveform adjust test point Plasma Display Panel Troubleshooting - 2007 P2 27 P11 to Z SUS Board 5v VA VS Troubleshooting ER_IPM (IC201) P1 VA Ground VS P5 5v Ground...
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...Floating Ground to Y Drive input measure in Diode Mode Y SUSTAIN Board removed from PDP Assembly (all resistance measurements are approximations) • VS to SUS OUT 1 Meg • SUS OUT to Chassis Ground 1 Meg • SUS_UP(+) SUS_DN(-) 450K • ER_LO to ER10 1 Meg • ER_HIGH to ER10 1 Meg ...Chassis Ground 10K • ER_DN to Chassis Ground 10K • SUS_UP to Chassis Ground 700K • SUS_DN to Chassis Ground 700K • Y SUS out at B1 to Floating Ground 2 Meg (infinite in Diode Mode) • VSC Test Points Measure in Diode Mode • -VY Test ...
...Floating Ground to Y Drive input measure in Diode Mode Y SUSTAIN Board removed from PDP Assembly (all resistance measurements are approximations) • VS to SUS OUT 1 Meg • SUS OUT to Chassis Ground 1 Meg • SUS_UP(+) SUS_DN(-) 450K • ER_LO to ER10 1 Meg • ER_HIGH to ER10 1 Meg ...Chassis Ground 10K • ER_DN to Chassis Ground 10K • SUS_UP to Chassis Ground 700K • SUS_DN to Chassis Ground 700K • Y SUS out at B1 to Floating Ground 2 Meg (infinite in Diode Mode) • VSC Test Points Measure in Diode Mode • -VY Test ...
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Z Bias 90v SUS_IPM ER_IPM IPM 18v Plasma Display Panel Troubleshooting - 2007 33 Z SUSTAIN Board Troubleshooting This Section of the Presentation will have a better understanding of this section the Technician will cover troubleshooting the Z-SUS Board Assembly. VS 196v. 5v. Upon completion 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 Developed on Z SUS VA 60v.
Z Bias 90v SUS_IPM ER_IPM IPM 18v Plasma Display Panel Troubleshooting - 2007 33 Z SUSTAIN Board Troubleshooting This Section of the Presentation will have a better understanding of this section the Technician will cover troubleshooting the Z-SUS Board Assembly. VS 196v. 5v. Upon completion 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 Developed on Z SUS VA 60v.
Owners Manual
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... the Primary Winding of Transformer T2 of each connector. Measured across parallel resistors R25 and R111, adjusted at pin 7 of the Z Bias Circuit. Plasma Display Panel Troubleshooting - 2007 34 Used to supply 60v to the Center and Bottom Right X Boards. The VA voltage is also routed to connectors... P152 and P153 at VR3. Input measured from P151 pins 1 and 2 to chassis Voltages Developed on the Z SUS Board and through P152 and P153 pins 3 and 4 supplies 5v to bias the Center and Right X Boards. Input measured from pins 8 and 9 of...
... the Primary Winding of Transformer T2 of each connector. Measured across parallel resistors R25 and R111, adjusted at pin 7 of the Z Bias Circuit. Plasma Display Panel Troubleshooting - 2007 34 Used to supply 60v to the Center and Bottom Right X Boards. The VA voltage is also routed to connectors... P152 and P153 at VR3. Input measured from P151 pins 1 and 2 to chassis Voltages Developed on the Z SUS Board and through P152 and P153 pins 3 and 4 supplies 5v to bias the Center and Right X Boards. Input measured from pins 8 and 9 of...
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Z SUSTAIN Voltage Distribution From Y SUS Board FL152 Troubleshooting To X Drive Boards Plasma Display Panel Troubleshooting - 2007 36
Z SUSTAIN Voltage Distribution From Y SUS Board FL152 Troubleshooting To X Drive Boards Plasma Display Panel Troubleshooting - 2007 36
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Troubleshooting Waveforms Z SUSTAIN Board • Input signals to the Z SUS Board at P1 from the Control Board are used to develop the Z SUS Drive Waveform to the IPM. Plasma Display Panel Troubleshooting - 2007 37 These signals are routed through IC1 and IC82 to drive the PDP.
Troubleshooting Waveforms Z SUSTAIN Board • Input signals to the Z SUS Board at P1 from the Control Board are used to develop the Z SUS Drive Waveform to the IPM. Plasma Display Panel Troubleshooting - 2007 37 These signals are routed through IC1 and IC82 to drive the PDP.
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PIN1 PIN2 PIN3 Pin 1 PIN4 PIN5 PIN6 PIN7 PIN8 PIN9 PIN10 PIN11 PIN12 Plasma Display Panel Troubleshooting - 2007 38 Troubleshooting Z Board SUS Board Waveform inputs from the Control Board NOTE: These voltages will vary due to changes in design and variations in the PDP panel.
PIN1 PIN2 PIN3 Pin 1 PIN4 PIN5 PIN6 PIN7 PIN8 PIN9 PIN10 PIN11 PIN12 Plasma Display Panel Troubleshooting - 2007 38 Troubleshooting Z Board SUS Board Waveform inputs from the Control Board NOTE: These voltages will vary due to changes in design and variations in the PDP panel.
Owners Manual
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Z SUS IPM (Intelligent Power Module) 95 V Z Vs 95V Vs SUS_UP Troubleshooting SUS_DN ER_UP ER_DN SUS_DN There are Two IPM ( Intelligent Power Module) on the Z sustain board of the 50PC1DR. One is SUS IPM (IC7) , another is ER IPM (IC5) Role of IPM 1.Generate sustain and erase waveform( square wave ) - SUS IPM. 2.Energy recovery function ( for saving power) - ER IPM. Plasma Display Panel Troubleshooting - 2007 41
Z SUS IPM (Intelligent Power Module) 95 V Z Vs 95V Vs SUS_UP Troubleshooting SUS_DN ER_UP ER_DN SUS_DN There are Two IPM ( Intelligent Power Module) on the Z sustain board of the 50PC1DR. One is SUS IPM (IC7) , another is ER IPM (IC5) Role of IPM 1.Generate sustain and erase waveform( square wave ) - SUS IPM. 2.Energy recovery function ( for saving power) - ER IPM. Plasma Display Panel Troubleshooting - 2007 41
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Plasma Display Panel Troubleshooting - 2007 48 X Drive Board Troubleshooting Voltages Supplied to the X Boards • VA From the Z SUS Board to both the Center • and Right X Boards. • VA From the Y SUS Board to the Left X Board • 5v From the Z SUS Board to both the Center and • Right X Boards. • 5v From the Y SUS Board to the Left X Board.
Plasma Display Panel Troubleshooting - 2007 48 X Drive Board Troubleshooting Voltages Supplied to the X Boards • VA From the Z SUS Board to both the Center • and Right X Boards. • VA From the Y SUS Board to the Left X Board • 5v From the Z SUS Board to both the Center and • Right X Boards. • 5v From the Y SUS Board to the Left X Board.
Owners Manual
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Dual Scan Y SUS Board Voltage Distribution Q16 Q26 Q8 Q7 Q5 VSC Floating Q6 Ground Q12 Q17 Q18 Q19 Q11 B41 Oscilloscope Q15 Waveform Y Drive Q14 Q10 Q13 ... SUS_UP SUS_DN ER_l0 VS_2 ER_ LOW 5v ER_UP ER_DN P7 GND 5V VA Logic signals from the Control BD for IPMs and Y Drive IC10 IC19 Plasma Display Panel Troubleshooting - 2007 60
Dual Scan Y SUS Board Voltage Distribution Q16 Q26 Q8 Q7 Q5 VSC Floating Q6 Ground Q12 Q17 Q18 Q19 Q11 B41 Oscilloscope Q15 Waveform Y Drive Q14 Q10 Q13 ... SUS_UP SUS_DN ER_l0 VS_2 ER_ LOW 5v ER_UP ER_DN P7 GND 5V VA Logic signals from the Control BD for IPMs and Y Drive IC10 IC19 Plasma Display Panel Troubleshooting - 2007 60
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Plasma Display Panel Troubleshooting - 2007 64 Waveform Test point DUAL SCAN PDP 50PX2 Vsc test point, Adjustment -Vy test point, Adjustment Variations in the PCB design will result in variations in this manual. Refer to the label on the Y-SUS PCB match this number to the correct signal in The signal driving the PDP panel.
Plasma Display Panel Troubleshooting - 2007 64 Waveform Test point DUAL SCAN PDP 50PX2 Vsc test point, Adjustment -Vy test point, Adjustment Variations in the PCB design will result in variations in this manual. Refer to the label on the Y-SUS PCB match this number to the correct signal in The signal driving the PDP panel.