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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Safety Rules PLASMA Overview Safety & Handling Regulations Troubleshooting 1. Do not exceed Higher voltage than is required for at least one minute because of residual current stored. 4. Check details of short ...required before Requesting MODULE Repair 1. Verify model names and board model matches. 3. Be careful of defective condition and history. Checking Point before adjustment. 2. Plasma Display Panel Troubleshooting - 2007 3 Be cautious of Panel and boards. 2. Approximately 10 minute pre-run time is recommended that you should be carried by two people. 6....
Safety Rules PLASMA Overview Safety & Handling Regulations Troubleshooting 1. Do not exceed Higher voltage than is required for at least one minute because of residual current stored. 4. Check details of short ...required before Requesting MODULE Repair 1. Verify model names and board model matches. 3. Be careful of defective condition and history. Checking Point before adjustment. 2. Plasma Display Panel Troubleshooting - 2007 3 Be cautious of Panel and boards. 2. Approximately 10 minute pre-run time is recommended that you should be carried by two people. 6....
Owners Manual
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... the DC 5v, VA, VS, V SET UP, -VY, VSC, and Z Bias as they will cover troubleshooting the Switch Mode Power Supply for the Single Scan Plasma. Switch Mode Power Supply Troubleshooting This Section of the Presentation will vary from Panel to the sticker located in the upper right side of... the Power Supply circuit and will be able to locate voltage and test points needed for troubleshooting and alignments. • ...
... the DC 5v, VA, VS, V SET UP, -VY, VSC, and Z Bias as they will cover troubleshooting the Switch Mode Power Supply for the Single Scan Plasma. Switch Mode Power Supply Troubleshooting This Section of the Presentation will vary from Panel to the sticker located in the upper right side of... the Power Supply circuit and will be able to locate voltage and test points needed for troubleshooting and alignments. • ...
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Troubleshooting Steps • Define Look at the symptom carefully and determine what circuits could be sure they are noise free. Always confirm the Supplies are missing ... problem. Capacitors will be the DC Supply voltages to the Customer. If the supplies are not only the proper level but be causing the failure. Plasma Display Panel Troubleshooting - 2007 5 Make all necessary adjustments and lastly always perform a Safety AC Leakage Test before returning the product back to those circuits under test.
Troubleshooting Steps • Define Look at the symptom carefully and determine what circuits could be sure they are noise free. Always confirm the Supplies are missing ... problem. Capacitors will be the DC Supply voltages to the Customer. If the supplies are not only the proper level but be causing the failure. Plasma Display Panel Troubleshooting - 2007 5 Make all necessary adjustments and lastly always perform a Safety AC Leakage Test before returning the product back to those circuits under test.
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... Data. • Standby Operation - Power Sequence • AC Cord Plugged in Standby Mode when turned off the SMPS will remain in - Plasma Display Panel Troubleshooting - 2007 6 Needed to enable the Micro Processor to output the RL-ON Signal to turn on the SMPS. • Digital Board sends...8226; VS-ON applied from the Digital Board to the Power Board on connector P800 Pin 5 used to the Digital Board. SMPS Operating Modes Troubleshooting • Deep Sleep Mode - Guide Plus has been programmed or a Cable Card is installed and unit is plugged in full operation. Standby 5v...
... Data. • Standby Operation - Power Sequence • AC Cord Plugged in Standby Mode when turned off the SMPS will remain in - Plasma Display Panel Troubleshooting - 2007 6 Needed to enable the Micro Processor to output the RL-ON Signal to turn on the SMPS. • Digital Board sends...8226; VS-ON applied from the Digital Board to the Power Board on connector P800 Pin 5 used to the Digital Board. SMPS Operating Modes Troubleshooting • Deep Sleep Mode - Guide Plus has been programmed or a Cable Card is installed and unit is plugged in full operation. Standby 5v...
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..., and 5V on the Power Board from pins 1 and 2 of Deep Sleep Mode. • 5V-M Needed to chassis ground. Switch Mode Power Supply (SMPS) Voltages Troubleshooting • VS 196v used for the signal processing circuits present in standby...
..., and 5V on the Power Board from pins 1 and 2 of Deep Sleep Mode. • 5V-M Needed to chassis ground. Switch Mode Power Supply (SMPS) Voltages Troubleshooting • VS 196v used for the signal processing circuits present in standby...
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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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... 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 D251 D202 VA 5V-M Q281 5V HS6 U261 Q223 D221 3.3v AC Input F101 AC INPUT Circuit... Plasma Display Panel Troubleshooting - 2007 10 Power Supply Voltage Distribution HS2 Q607 Q801 PC901 HS3 U801 HS4 T801 R606 R607 Q606 Q601 U851 T902 Q854 R963 P802 19V...
... 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 D251 D202 VA 5V-M Q281 5V HS6 U261 Q223 D221 3.3v AC Input F101 AC INPUT Circuit... Plasma Display Panel Troubleshooting - 2007 10 Power Supply Voltage Distribution HS2 Q607 Q801 PC901 HS3 U801 HS4 T801 R606 R607 Q606 Q601 U851 T902 Q854 R963 P802 19V...
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...5v. Y SUS Developed VSC 115v. -VY -196v. ER IPM SUS IPM Ramp UP V SET DN V SET UP Plasma Display Panel Troubleshooting - 2007 11 Upon completion of the Section the technician 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. IPM 18v. 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 • ...
...5v. Y SUS Developed VSC 115v. -VY -196v. ER IPM SUS IPM Ramp UP V SET DN V SET UP Plasma Display Panel Troubleshooting - 2007 11 Upon completion of the Section the technician 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. IPM 18v. 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 • ...
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Check VSC Check -VY Plasma Display Panel Troubleshooting - 2007 12 Measured at the VSC test points. • -VY -196v Used to shape the Y Drive waveform by setting the V Scan level. Important Note Troubleshooting • The following voltages and waveforms should be adjusted in the order they are the same...sure the -VY and VSC are presented. • Always adjust the DC levels before the waveform adjustments to most accurately set the Plasma Display Panel. Voltmeter Adjustments to Y SUS • VSC 115v Used to shape the Y Drive waveform by setting the negative excursion of the ...
Check VSC Check -VY Plasma Display Panel Troubleshooting - 2007 12 Measured at the VSC test points. • -VY -196v Used to shape the Y Drive waveform by setting the V Scan level. Important Note Troubleshooting • The following voltages and waveforms should be adjusted in the order they are the same...sure the -VY and VSC are presented. • Always adjust the DC levels before the waveform adjustments to most accurately set the Plasma Display Panel. Voltmeter Adjustments to Y SUS • VSC 115v Used to shape the Y Drive waveform by setting the negative excursion of the ...
Owners Manual
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Troubleshooting Waveform Adjustments Y SUSTAIN • Ramp Up Used to shape the Y Drive Waveform by changing the pitch of the Top Ramp • V SET DN Used to shape the Y Drive Waveform by changing the pitch of the Bottom Ramp • V SET UP Used to shape the Y Drive waveform by leveling the Top Ramp Plasma Display Panel Troubleshooting - 2007 13
Troubleshooting Waveform Adjustments Y SUSTAIN • Ramp Up Used to shape the Y Drive Waveform by changing the pitch of the Top Ramp • V SET DN Used to shape the Y Drive Waveform by changing the pitch of the Bottom Ramp • V SET UP Used to shape the Y Drive waveform by leveling the Top Ramp Plasma Display Panel Troubleshooting - 2007 13
Owners Manual
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Normal Waveform RAMP UP Panel Waveform Adjustment 35 micro seconds Scope TP 000 -VY 180 micro seconds VSET UP This test point is the reference for all the following signals referred to 10x1. Readings are taken with different Y_SUSTAIN PCB part #'s. Ground VSET DN +VSC Plasma Display Panel Troubleshooting - 2007 14 Troubleshooting Single Scan Panel *Waveforms may vary with the probe set to here.
Normal Waveform RAMP UP Panel Waveform Adjustment 35 micro seconds Scope TP 000 -VY 180 micro seconds VSET UP This test point is the reference for all the following signals referred to 10x1. Readings are taken with different Y_SUSTAIN PCB part #'s. Ground VSET DN +VSC Plasma Display Panel Troubleshooting - 2007 14 Troubleshooting Single Scan Panel *Waveforms may vary with the probe set to here.
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Troubleshooting Single Scan Panel Panel Waveform Adjustment Ramp up too low Plasma Display Panel Troubleshooting - 2007 Noticeable low level color distortion with the Ramp_up too high. Ramp up too high Noticeable low level color distortion with the Ramp_up too low. 15
Troubleshooting Single Scan Panel Panel Waveform Adjustment Ramp up too low Plasma Display Panel Troubleshooting - 2007 Noticeable low level color distortion with the Ramp_up too high. Ramp up too high Noticeable low level color distortion with the Ramp_up too low. 15
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Troubleshooting Single Scan Panel Panel Waveform Adjustment Vset DN too low The center begins to wash out and arc due to increased Vset_DN time. 16 Vset DN too high Plasma Display Panel Troubleshooting - 2007 All of the center washes out due to decreased Vset DN time.
Troubleshooting Single Scan Panel Panel Waveform Adjustment Vset DN too low The center begins to wash out and arc due to increased Vset_DN time. 16 Vset DN too high Plasma Display Panel Troubleshooting - 2007 All of the center washes out due to decreased Vset DN time.
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Vset UP too low Plasma Display Panel Troubleshooting - 2007 Very little alteration to the Vset UP peeking too quickly. 17 The peek widens due to the picture, the wave form indicates a distorted Vset UP. Troubleshooting Single Scan Panel Panel Waveform Adjustment Vset UP too high The center begins to wash out and arc due to Vset UP Peeking too late and alters the start of the Vset DN phase.
Vset UP too low Plasma Display Panel Troubleshooting - 2007 Very little alteration to the Vset UP peeking too quickly. 17 The peek widens due to the picture, the wave form indicates a distorted Vset UP. Troubleshooting Single Scan Panel Panel Waveform Adjustment Vset UP too high The center begins to wash out and arc due to Vset UP Peeking too late and alters the start of the Vset DN phase.
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VY running to - Troubleshooting Single Scan Panel Panel Waveform Adjustment -VY too low (-154vdc) Colors and the image will bloom slightly and the unit will have difficulty with clean frame changes in a quickly altering image. -VY too high (-227vdc) Plasma Display Panel Troubleshooting - 2007 The center begins to wash out and arc due to long and clipping. 18
VY running to - Troubleshooting Single Scan Panel Panel Waveform Adjustment -VY too low (-154vdc) Colors and the image will bloom slightly and the unit will have difficulty with clean frame changes in a quickly altering image. -VY too high (-227vdc) Plasma Display Panel Troubleshooting - 2007 The center begins to wash out and arc due to long and clipping. 18
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VSC too high (140 Volts) Plasma Display Panel Troubleshooting - 2007 The image will show very little change but there will Be some distortion in a quickly changing image. 19 Troubleshooting Single Scan Panel Panel Waveform Adjustment VSC too low (77 Volts) The image will show very little change but there will Be some distortion in a quickly changing image.
VSC too high (140 Volts) Plasma Display Panel Troubleshooting - 2007 The image will show very little change but there will Be some distortion in a quickly changing image. 19 Troubleshooting Single Scan Panel Panel Waveform Adjustment VSC too low (77 Volts) The image will show very little change but there will Be some distortion in a quickly changing image.
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Plasma Display Panel Troubleshooting - 2007 20 SINGLE SCAN PDP 50PX3 DVM ZBIAS adjustment: On the Z-Sustain PCB With the DVM across R92 adjust the potentiometer till the DVM reads 93 vdc.
Plasma Display Panel Troubleshooting - 2007 20 SINGLE SCAN PDP 50PX3 DVM ZBIAS adjustment: On the Z-Sustain PCB With the DVM across R92 adjust the potentiometer till the DVM reads 93 vdc.
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Logic signals from Control Board < Probe connect point to Oscilloscope to check Y Drive output wave form to drive both of the Y Drive Boards sequentially with the Y Output Waveform for PDP operation. Y sustain board Troubleshooting Control Board supplies Logic Signals to the Y Sustain Board for processing, which then develops the signal to the Y Driver Boards > 110V 200V 110V 200V 80V Y Output Waveform V Y s Plasma Display Panel Troubleshooting - 2007 21
Logic signals from Control Board < Probe connect point to Oscilloscope to check Y Drive output wave form to drive both of the Y Drive Boards sequentially with the Y Output Waveform for PDP operation. Y sustain board Troubleshooting Control Board supplies Logic Signals to the Y Sustain Board for processing, which then develops the signal to the Y Driver Boards > 110V 200V 110V 200V 80V Y Output Waveform V Y s Plasma Display Panel Troubleshooting - 2007 21