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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Upon completion of the section the technician will have a better understanding of the operation of the Power Supply circuit and will be able to locate voltage and test points needed for troubleshooting and alignments. • DC Voltages developed on the SMPS • ... to the sticker located in the upper right side of the Presentation will vary from Panel to Panel. V SET_UP -VY VSC Z_BIAS Plasma Display Panel Troubleshooting - 2007 4 Switch Mode Power Supply Troubleshooting This Section of the PDP for the correct voltage levels for the DC 5v, VA, VS, V SET UP, -VY, VSC...
Upon completion of the section the technician will have a better understanding of the operation of the Power Supply circuit and will be able to locate voltage and test points needed for troubleshooting and alignments. • DC Voltages developed on the SMPS • ... to the sticker located in the upper right side of the Presentation will vary from Panel to Panel. V SET_UP -VY VSC Z_BIAS Plasma Display Panel Troubleshooting - 2007 4 Switch Mode Power Supply Troubleshooting This Section of the PDP for the correct voltage levels for the DC 5v, VA, VS, V SET UP, -VY, VSC...
Owners Manual
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Frequency of power supplies will change with the Oscilloscope to make sure to those circuits under test. Make all necessary adjustments and lastly always perform a Safety AC Leakage ... eminent failure. • Correct The final step is to the Customer. If the supplies are not only the proper level but be causing the failure. Plasma Display Panel Troubleshooting - 2007 5 Always confirm the Supplies are missing check the resistance for possible short circuits. • Isolate To further isolate the failure check...
Frequency of power supplies will change with the Oscilloscope to make sure to those circuits under test. Make all necessary adjustments and lastly always perform a Safety AC Leakage ... eminent failure. • Correct The final step is to the Customer. If the supplies are not only the proper level but be causing the failure. Plasma Display Panel Troubleshooting - 2007 5 Always confirm the Supplies are missing check the resistance for possible short circuits. • Isolate To further isolate the failure check...
Owners Manual
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...Digital Board through P800 Pin 6 and used to turn on the VA, and VS Supplies • 5V-M Sent from the Power Board Pin1 of Deep Sleep Mode. Plasma Display Panel Troubleshooting - 2007 6 SMPS Operating Modes Troubleshooting • Deep Sleep Mode - Standby 5v • AC Detect sent... from the Digital Board to the Power Board to turn on 5V-DC. • 5V-D is powered off the SMPS will remain in ...
...Digital Board through P800 Pin 6 and used to turn on the VA, and VS Supplies • 5V-M Sent from the Power Board Pin1 of Deep Sleep Mode. Plasma Display Panel Troubleshooting - 2007 6 SMPS Operating Modes Troubleshooting • Deep Sleep Mode - Standby 5v • AC Detect sent... from the Digital Board to the Power Board to turn on 5V-DC. • 5V-D is powered off the SMPS will remain in ...
Owners Manual
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...; 5v.DC Used to develop bias voltages for the Audio Output Supply, present in standby. Measured at P803 pins 5 and 6 to chassis ground. Plasma Display Panel Troubleshooting - 2007 7 Standby voltage applied to the Analog, and Digital Boards to chassis ground. Measured from pins 1 and 2 of connector P805...Analog Board and used for the circuits on the Digital and Analog Boards, present in standby. Measured at P802 pins 1 and 2 to turn on the Power Board from pins 8, 9, and 10 of connector P805 to drive the Horizontal Grid Voltage, Y SUS, and Z SUS. ON Switched 5 volts at ...
...; 5v.DC Used to develop bias voltages for the Audio Output Supply, present in standby. Measured at P803 pins 5 and 6 to chassis ground. Plasma Display Panel Troubleshooting - 2007 7 Standby voltage applied to the Analog, and Digital Boards to chassis ground. Measured from pins 1 and 2 of connector P805...Analog Board and used for the circuits on the Digital and Analog Boards, present in standby. Measured at P802 pins 1 and 2 to turn on the Power Board from pins 8, 9, and 10 of connector P805 to drive the Horizontal Grid Voltage, Y SUS, and Z SUS. ON Switched 5 volts at ...
Owners Manual
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Power Supply VS Adjust VA Adjust VS VA Source VA 5v VS Source Control IC 3.3v Adjust 19v Audio Supply 12V,6V, 5V and 3.3V Source Standby Circuit P802 P803 P800 Plasma Display Panel Troubleshooting - 2007 8 Troubleshooting 380 Volt Supply AC Input Circuit
Power Supply VS Adjust VA Adjust VS VA Source VA 5v VS Source Control IC 3.3v Adjust 19v Audio Supply 12V,6V, 5V and 3.3V Source Standby Circuit P802 P803 P800 Plasma Display Panel Troubleshooting - 2007 8 Troubleshooting 380 Volt Supply AC Input Circuit
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Power Supply Low Voltage Connectors Troubleshooting P800 PIN1 P803 PIN 1 P802 PIN 1 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 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 1) 19V 2) 19V 3) GND 4) GND 5) 6V 6) GND 7) 3.3V 8) GND 9) 12V 10) GND Plasma Display Panel Troubleshooting - 2007 9
Power Supply Low Voltage Connectors Troubleshooting P800 PIN1 P803 PIN 1 P802 PIN 1 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 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 1) 19V 2) 19V 3) GND 4) GND 5) 6V 6) GND 7) 3.3V 8) GND 9) 12V 10) GND Plasma Display Panel Troubleshooting - 2007 9
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Power Supply Voltage Distribution HS2 Q607 Q801 PC901 HS3 U801 HS4 T801 R606 R607 Q606 Q601 U851 T902 Q854 R963 P802 19V 3.3V 12V P803 3.3V ... Q151 Standby Regulator U501 S-5V U601 PCs Control S-5V IC 28 U701 24 20 19 D502 R745 R747 Q702 Q701 D703 D704 Low Voltage Standby Power Supply T501 HS1 D101 D102 AC Relay RL101 AC Relay RL102 120VAC D506 D501 TH01 TH02 Troubleshooting D951 VS D952 D953 D271 6V D261 Q252...
Power Supply Voltage Distribution HS2 Q607 Q801 PC901 HS3 U801 HS4 T801 R606 R607 Q606 Q601 U851 T902 Q854 R963 P802 19V 3.3V 12V P803 3.3V ... Q151 Standby Regulator U501 S-5V U601 PCs Control S-5V IC 28 U701 24 20 19 D502 R745 R747 Q702 Q701 D703 D704 Low Voltage Standby Power Supply T501 HS1 D101 D102 AC Relay RL101 AC Relay RL102 120VAC D506 D501 TH01 TH02 Troubleshooting D951 VS D952 D953 D271 6V D261 Q252...
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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 -
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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. SUS IPM (IC202) 2. Energy Recovery Function (for saving power) - ER IPM (IC201) Role of IPMs 1. ER IPM. Generate Sustain Waveform (square wave) - SUS IPM. 2. Plasma Display Panel Troubleshooting - 2007 23
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. SUS IPM (IC202) 2. Energy Recovery Function (for saving power) - ER IPM (IC201) Role of IPMs 1. ER IPM. Generate Sustain Waveform (square wave) - SUS IPM. 2. Plasma Display Panel Troubleshooting - 2007 23
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Troubleshooting Resistance Measurements performed with board installed and no power applied (all resistance measurements are approximations) • VA 3 Meg measured from chassis ground • VS 18 Meg measured from chassis ground • 5v 2K measured ... (infinite in Diode Mode) • VSC Test Points Measure in Diode Mode • -VY Test Points Measure in Diode Mode • ER_UP to ER_DN 20K Plasma Display Panel Troubleshooting - 2007 29
Troubleshooting Resistance Measurements performed with board installed and no power applied (all resistance measurements are approximations) • VA 3 Meg measured from chassis ground • VS 18 Meg measured from chassis ground • 5v 2K measured ... (infinite in Diode Mode) • VSC Test Points Measure in Diode Mode • -VY Test Points Measure in Diode Mode • ER_UP to ER_DN 20K Plasma Display Panel Troubleshooting - 2007 29
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) - Plasma Display Panel Troubleshooting - 2007 41 ER IPM.
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) - Plasma Display Panel Troubleshooting - 2007 41 ER IPM.
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CONTROL Board Troubleshooting ◆. Left picture shows 7 periods which means normal temperature Green = OFF Yellow = ON Weight D15 - 8 D16 - 4 D17 - 2 D18 - 1 TEST Pattern AUTOGEN P1 Connector MCM (Micro Control Module) Plasma Display Panel Troubleshooting - 2007 LG Part Number Label 45 In charge of all signal process and creating ON/OFF order of all FET on DRIVER B/D by receiving 8 bit R, G, B input. ◆. Power : 3.3V/5V Temperature diode Voltage Regulator Flash ROM Voltage Regulator Temperature display diode can be checked.
CONTROL Board Troubleshooting ◆. Left picture shows 7 periods which means normal temperature Green = OFF Yellow = ON Weight D15 - 8 D16 - 4 D17 - 2 D18 - 1 TEST Pattern AUTOGEN P1 Connector MCM (Micro Control Module) Plasma Display Panel Troubleshooting - 2007 LG Part Number Label 45 In charge of all signal process and creating ON/OFF order of all FET on DRIVER B/D by receiving 8 bit R, G, B input. ◆. Power : 3.3V/5V Temperature diode Voltage Regulator Flash ROM Voltage Regulator Temperature display diode can be checked.
Owners Manual
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CPU The 405 CPU core is 100% PowerPC compatible and possesses all of the qualities necessary to the Core Connect bus structure provide for a high bandwidth, low latency system interface solution. Optimized interfaces to make powerful and cost effective system-on-a-chip designs a reality. Plasma Display Panel Troubleshooting - 2007 82
CPU The 405 CPU core is 100% PowerPC compatible and possesses all of the qualities necessary to the Core Connect bus structure provide for a high bandwidth, low latency system interface solution. Optimized interfaces to make powerful and cost effective system-on-a-chip designs a reality. Plasma Display Panel Troubleshooting - 2007 82
Owners Manual
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...halts. Recording failed. Watching digital channel while recording another digital channel while recording digital channel. Recording stops as recording space is not possible Plasma Display Panel Troubleshooting - 2007 93 Note HDD problem. "No" will begin. Record is 5hr or bigger. User must be turned off...digital channel is full Recording stopped. Length is 500. Cannot change to start No recording space. Copy protection detected before power off HDD recording space is full HDD error recovery program has started HDD recording space is full Cannot add record duration if...
...halts. Recording failed. Watching digital channel while recording another digital channel while recording digital channel. Recording stops as recording space is not possible Plasma Display Panel Troubleshooting - 2007 93 Note HDD problem. "No" will begin. Record is 5hr or bigger. User must be turned off...digital channel is full Recording stopped. Length is 500. Cannot change to start No recording space. Copy protection detected before power off HDD recording space is full HDD error recovery program has started HDD recording space is full Cannot add record duration if...
Owners Manual
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TROUBLE SHOOTING Eliminate the HDD • If you suspect the HDD is causing a video or audio problem you can simply unplug it • You MUST unplug the TV before disconnecting or reconnecting the HDD • During initial power up the TV will detect whether or not the HDD is there and will route the audio and video as needed Plasma Display Panel Troubleshooting - 2007 98
TROUBLE SHOOTING Eliminate the HDD • If you suspect the HDD is causing a video or audio problem you can simply unplug it • You MUST unplug the TV before disconnecting or reconnecting the HDD • During initial power up the TV will detect whether or not the HDD is there and will route the audio and video as needed Plasma Display Panel Troubleshooting - 2007 98
Owners Manual
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...: 5. Check CPLD(IC900) outputs: Plasma Display Panel Troubleshooting - 2007 99 Check HDD Power cable. #1: 5V, #4:12V 2. Check SiI3512(IC1500) inputs: Power pins, Osc • Check LED150 blinking • Check PCI bus 4. Check HDD Signal cable (SATA) 3. DVR TROUBLE SHOOTING 1 Check HDD power cable 2 Check HDD Signal Cable(SATA) 3 Check SiI3512 Power pins, Osc, PCI Bus...
...: 5. Check CPLD(IC900) outputs: Plasma Display Panel Troubleshooting - 2007 99 Check HDD Power cable. #1: 5V, #4:12V 2. Check SiI3512(IC1500) inputs: Power pins, Osc • Check LED150 blinking • Check PCI bus 4. Check HDD Signal cable (SATA) 3. DVR TROUBLE SHOOTING 1 Check HDD power cable 2 Check HDD Signal Cable(SATA) 3 Check SiI3512 Power pins, Osc, PCI Bus...
