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Panasonic TH-65PX600U Service Manual
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Panasonic TH-65PX600U Service Manual

Panasonic 9th gen. plasma display television
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See also: Service Manual , Technical Manual
Panasonic Services Company
TH
9
Gen. Plasma Display Television
National Training
1

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Summary of Contents for Panasonic TH-65PX600U

  • Page 1 Panasonic Services Company Gen. Plasma Display Television National Training...

  • Page 2: Models Comparison

    Models Comparison Comparison Table CableCARD MODEL Resolution SD Card Guide slot in the Input Tuner TH-65PX600U 1920x1080p TH-58PX600U 1366x768p TH-50PX600U 1366x768p TH-42PX600U 1024x768p TH-58PX60U 1366x768p TH-50PX60U 1366x768p TH-42PX60U 1024x768p TH-37PX60U 1024x720p TH-42PD60U 852x480p TH-50PX6U 1366x768p TH-42PX6U 1024x768p This table is a comparison between the different models of this line of plasma televisions.
  • Page 3 Input/Output (Jacks) TH-42/50/58/65 TH-42PD60U PX600U 37/42/50/58PX60U INPUT/OUTPUT: NTSC (Standard analog NTSC (Standard analog NTSC (Standard analog broadcasts) broadcasts) broadcasts) Tuners ATSC/QAM (SDTV and ATSC/QAM (SDTV and HDTV ATSC/QAM (SDTV and HDTV broadcasts) broadcasts) HDTV broadcasts) Photo Viewer Yes (SD Slot) Yes (SD Slot) SD Card Slot Yes (JPEG Photo Viewer)
  • Page 4 42PX60 Board Layout...
  • Page 5 42PX60 Board Description...
  • Page 6 Getting Familiar With The New Plasma TV Before this generation of plasma TV, Panasonic has always used the double scan system in their HD plasma TV. In this generation, the 37” and the 42” HD models utilized the single scan system.
  • Page 7 Differences Between 8 and 9 Generations No Data Drive Circuit Boards (C Boards) for 37” and 42” models (PD60U, PX6U, PX60U, & PX600U) at the top of the TV. The PA board is back where it originally was in the 6 Generation models.

  • Page 8: Board Location

    D board Location The purpose of this picture is to show the new location of the D board, which seats below the DG and the DT boards. Unlike the previous generation, there’s not any access to this board.
  • Page 9 Digital Tuner/HDMI Connector When an ATSC channel is selected, the output of the DIGITAL AUDIO OUT jack is Dolby Digital. When a NTSC channel is selected, the output is PCM. Since the TV does not have a DV board, this picture shows the new location of the HDMI connectors (2).
  • Page 10 SC, SU, and SD Boards The component side of the SU and SD boards is now visible without removal.
  • Page 11 Inputs This picture shows the CableCARD slot, the Antenna terminal, the HDMI input connectors, and the PC input connector.
  • Page 12 HDAVI control Enables unified control between compatible Panasonic products connected via the HDMI cable, so you can, for instance, control multiple compatible Panasonic A/V products from a single remote. The new EZ-Sync This might look like just another so-called universal remote.
  • Page 13 "With EZ-Sync, you press one button and • The TV turns on • The DVD player turns on • The home theater surround sound system turns on and automatically selects the right inputs and settings to use for the DVD."...
  • Page 14 Control with HDMI “HDAVI Control” Home theater’s Remote Control • Connect the Compatible Home Theater (SA-HT940) using the HDMI connector. • Turn on the HT and the TV individually to first establish communication. • If there is a disc in the unit and the “Active Theater”...
  • Page 15 Control with HDMI “HDAVI Control” Under normal condition, the menu does not show the “Home Theater” option. This option is added to the menu when the TV is connected to a HDAVI compatible Panasonic home theater unit. This feature allows you to control the home theater’s volume by using the TV’s remote...

  • Page 16: The Remote Control

    How Do I know the Format of the Signal Received? Press the “Recall” button on the Remote Control In previous models, information that could only be seen in the serviceman mode menu is is now available by pressing the “RECALL” button on the remote control.
  • Page 17 SD Card (PX60U &PX600U) Compliant card type (maximum capacity) • SD Card (2 GB) Mini SD Card (1 GB) (requiring mini SD Card adapter) PX600 This light can be turned off Only from the menu Recycle the Power if the TV won’t read the card The PX60U and the PX600U models are equipped with a SD card slot for photo viewing purposes.

  • Page 18: Power Supply

    Power Supply Power Supply...
  • Page 19 Standby Block Part1 This block diagram shows the sequence of events that takes place inside the TV during standby. When the TV is plugged in: 1. AC is applied to the power supply board (P) through connector P9. The AC is applied to the standby circuit to produce STB12V and STB5V.
  • Page 20 Standby Block Part 2 6. The STB9V and STB5V from the PA board are provided to the Main CPU IC1103 on the DG board as 9V detect and 5V detect lines. If any of these voltages is missing, the TV goes into shutdown and the power LED blinks 10 times as soon as the unit is plugged into the wall outlet.
  • Page 21 Power Supply (Standby Circuit) This is a sequence of events that take place during the standby operation. The AC from connector P9 is filtered by the line filter L410 and then it is rectified by the bridge rectifier D404. The DC from D404 is applied to the standby circuit (T410, IC409) where 12V and 5V are developed.
  • Page 22 STB5V Distribution The STB5V is routed through the D board to be connected to the DG board. In the DG board, the STB5V is used to generate the 1.5V and the 3.3V to power the CPU (IC1103). The STB5V is also routed through the H board and applied to the PA SOS detect circuit. The explanation for the circuit that generates the STB3.3V and STB1.5V is covered in the next slide.
  • Page 23 Power Supply (Standby Circuit) The STB5V from the P board is connected to the D board via connector D25. From there, it is provided to the DG board via pin 29 of connector DG3. On the DG board, the STB5V is connected to a 3.3V regulator, and a 1.5V regulator. IC1110 provides the STB1.5V to the CPU IC1103 and the switching circuit consisting of Q1140 and Q1141.
  • Page 24 STB5V, STB3.3V, and STB1.5V This is a schematic diagram of the STB3.3V, and STB1.5V regulators. To understand the operation of the circuit, see the explanation of the previous slide.
  • Page 25 F-STB-ON (Primary) The F-STB-ON voltage (3.2) from pin 13 of connector P25 is applied to pin 23 of the Power CPU (IC501) on the P board. IC501 sends out commands to first turn on the primary circuit of the power supply, and then the circuit that allows the FSTB14V to develop on the secondary circuit.
  • Page 26 F-STB-14V The 15V output from the secondary circuit of the power supply is applied to Q556. In order to generate the FSTB14V, the F STB ON/OFF command (high) from pin 18 of IC501 is applied to the gate of Q524 to turn it on. Q524 outputs a low to turn on Q556. The transistor Q556 outputs the FSTB14V to pin 1, 2, and 3 of connector P10.
  • Page 27 STB5V and TV-SUB-ON function on the PA PCB The STB 5V at pin 1 of connector PA40 and the TV SUB ON command at pin 33 of connector PA20 are used to activate the PA SOS detect circuit on the PA board. This circuit monitors the following voltages for abnormality: FTSB14V, SUB3.3V, SUB9V, SUB5V, Main3.3V, and Main1.8V.
  • Page 28 SUB-Voltages Output From the PA Board When FSTB14V is applied to the PA board through PA10, immediately a set of voltages is developed, lasting only approximately 15 seconds after AC has been applied to the TV. These voltages are: SUB9V, SUB5V, and SUB3.3V. The SUB9V and the SUB5V are used by the DG board and the DT board.
  • Page 29 PA Board Test Points This picture shows the location of all the connectors and the test points on the PA board.
  • Page 30 Power On When the unit is turned on using the power button on the front of the TV, a low is applied to Q1125 to turn it on. Q1125 outputs a low to the key input line (pin 187) of the CPU IC1103 on the DG board.
  • Page 31 Power On When the CPU on the DG board IC1103 receives the power on command from either the power switch on the TV panel or the remote control, both pin 5 and pin 215 go high (3.2V). The 3.2V from pin 215 is provided to the PA board through connector DG20. It is used to turn on the circuit that generates the “MAIN”...
  • Page 32 Panel-Standby-On Circuit When the TV is off, a low registered at pin 5 of IC1103 keeps Q1101 off. Consequently Q1139 conducts, keeping the voltage at pin 30 of connector DG3 low. When the power is turned on, pin 5 of IC1103 goes high (3.2V) and Q1101 outputs a low to the base of Q1139 to turn it off.
  • Page 33 Power Supply Secondary Circuit The 3.2V from pin 17 of connector P25 is used to output the voltages that were developed when the TV entered the standby mode (STB14V and 395VDC). Then it turns on the secondary circuit of the power supply to generate the VSUS, VDA, 15V and 5V. This high is applied to the base of Q557 to turn it on.
  • Page 34 VSUS and VDA Circuits The 3.2V from pin 17 of connector P25 is applied to the base of Q557 to turn it on. When Q557 is on, a low is applied to the TV ON/OFF pin (20) of the POWER CPU (IC501). When pin 20 goes low, pin 14 goes high to turn on Q551.
  • Page 35 PA board Circuit Explanation The “F-STB-14V” at connector PA10 is supplied to the voltage input pins of both regulators IC5601 and IC5602. IC5601 is a dual voltage regulator. It generates 9V and 5V. The SUB9V is output at pin 14 of IC5601 as soon as the STB14V is applied to pin 10. The ON/OFF pin (pin 16) is permanently grounded.
  • Page 36 Main-Voltages Output From the PA Board When the power is turned on, a set of voltages, similar to the voltages developed when the unit was plugged in, is developed. These voltages are: Main9V, Main5V, Main3.3V, and Main1.8V. All these voltages are used by different circuits in the DG board. The H board uses the Main9V and the Main3.3V.
  • Page 37 5V Distribution The switched 5V from the power supply board is applied first to the D board through connector D25. From there, the 5V is connected to the following boards: 1. The scan (SC) board through connector D20. 2. The data drive circuit board (C1) through connector D31. 3.

  • Page 38: Vsus Distribution

    VSUS Distribution The sustain voltage VSUS from the power supply board (P board) is provided to the SC board through pin 1 of connector P2/SC2. It is also provided to the SS board through pin 1 of connector SS11. The zener diode D585 monitors the VSUS. If an over-voltage condition occurs, the VSUS detect circuit (Q525 and Q530) is triggered and a high is output to pin 19 of IC501.
  • Page 39 No Power Troubleshooting Chart Can the click sound from the relays be heard after the TV is plugged into the wall outlet? Is there 5V at pin 1 of connector PA40 on Wait for approx. 20 seconds after applying the PA board? AC to the TV.
  • Page 40 Shutdown Detect Circuits...

  • Page 41: D Board Sos Detect

    D Board SOS Detect D Board SOS Detect NUMBER OF TIMES SOS LINE LINE MONITORED THE POWER LED BLINKS SOS 2 2 BLINKS SOS 3 P3.3V (15V & STB5V) 3 BLINKS SOS 4 4 BLINKS SOS 5 5 BLINKS SOS 6 6 BLINKS DRVRST 5V DET...
  • Page 42 DG Board SOS Detect DG Board SOS Detect NUMBER OF TIMES SOS LINE LINE MONITORED THE POWER LED BLINKS STB 3.3V DET STB 3.3V 10 BLINKS MAIN 3.3V DET MAIN 3.3V 10 BLINKS SUB 5V DET SUB 5V 10 BLINKS SUB 9V DET SUB 9V 10 BLINKS...
  • Page 43 PA Board_Over-Voltage Protection The transistor Q5644 monitors the SUB5V, SUB9V, MAIN1.8V, MAIN3.3V, and SUB3.3V, lines. If any of these supply voltages becomes excessive, the inline zener diode goes into conduction and turns on transistor Q5644. As a result, a voltage drop appears at the base of Q5641, causing it to turn on and output a high to pin 209 of the MPU, IC1103, to trigger the SOS condition.
  • Page 44 PA-Board_Loss of Sub-Voltage Protection The transistor Q5641 monitors the FSTB14V, SUB3.3V, SUB9V, and SUB5V lines. If any of these supply lines develop a short circuit, transistor Q5641 goes into conduction and applies a high to pin 209 of the MPU, IC1103, triggering an SOS condition.
  • Page 45 PA-Board_Loss of Main-Voltage Protection The transistor Q5642 monitors the MAIN1.8V, MAIN9V, and MAIN5V lines. If any of these supply lines develop a short circuit, transistor Q5642 goes into conduction and applies a high to pin 209 of the MPU, IC1103, triggering an SOS condition.
  • Page 46 D Board SOS Detect Power supply abnormalities detected on the P board are reported to IC9003 via the SOS4 input. SOS2_15V, SOS3_3V and SOS5_5V of IC9003 monitor for a short circuit of the 15V, 3.3V and 5V inputs to the D board. The DRV RST input monitors for the presence of 5V on the C boards.
  • Page 47 DG Board SOS Detect 1. The MPU (IC1103) of the DG board monitors the MAIN3.3V, SUB5V and SUB9V sources of the PA. If any of these voltages is missing, IC1103 shuts down the unit and the power LED blinks 10 times. 2.
  • Page 48 Origin of Power LED Blinks This drawing shows the relationship of most of the boards in the unit. It also shows the most likely board to replace when there is a shutdown condition and a blinking pattern emitted by the power LED.
  • Page 49 15V Distribution The 15V supply is created on the P board. It is distributed to the PA, SC, D, and SS boards.
  • Page 50 15V SOS During standby operation, pin 71 of the MPU (IC9003) is kept low by the transistor Q9052. Upon receiving the power-on command, the 15V source that originates at the power supply is applied to the voltage divider consisting of R9215 and R9207. The voltage drop causes the collector of Q9051 to go low and the collector of Q9052 to go high and indicate the presence of the 15V.
  • Page 51 5V SOS During standby operation, pin 69 of the MPU (IC9003) is kept low by the transistor Q9054. Upon receiving the power-on command, the 5V source that originates at the power supply is applied to the voltage divider consisting of R9205 and R9206. The voltage drop causes the collector of Q9053 to go low and the collector of Q9054 to go high and indicate the presence of the 5V.
  • Page 52 PA Voltage Output This diagram depicts the distribution of the PA board voltages to the DG, H, and DT boards. A high output at pin 34 of connector PA20 will cause the unit to shut down and generate ten blinks of the power LED. This SOS condition is created when there is an abnormality of any of the voltages shown in the diagram.
  • Page 53 PA SOS Detect Circuit Upon connecting the television to the wall outlet, the STB 5V created by the P board is applied to the PA board via pin 1 of connector PA40. The TV SUB ON command of the DG board MPU (IC1103) enters pin 33 of connector PA20 and turns on Q5604.
  • Page 54 BT30V (Tuner SOS) Detect Circuit D2661 D2663 The BT30V source is generated by a boost regulator circuit that consists of IC2607 and biasing components. The BT30V output is monitored for over-voltage condition. The diode D2663 goes into conduction when its reverse breakdown voltage is exceeded.
  • Page 55 Sound SOS Detect Circuit SOS N N SOS The transistor Q2301 monitors the speaker amplifier IC (IC2302). If the IC or one of the speakers develops a short circuit, a high is output at pin 46 of the IC causing Q2301 to go into conduction and output a low to the base of Q2300.
  • Page 56 Drive Reset Circuit DRV RST input to IC9500 and IC9003 must be high for the unit to operate. The D board provides the 5V source needed to power the C boards. On the C board, the 5V is routed back to the D board to activate the 5V SENSE circuit. A voltage divider consisting of R9369 and R9371 causes the collector of transistor Q9301 to become low.

  • Page 57: Digital Temperature Sensor

    Digital Temperature Sensor This slide shows the location of the D board and the digital temperature sensor.
  • Page 58 Digital Temperature Sensor The internal temperature of the unit is monitored by the digital temperature sensor (IC9002). Variations in temperature are sensed by the IC and reported to the D board MPU (IC9003) via the SDA02 bus line. IC9003 then conveys the information to the DG board MPU (IC1103) via the SDA1 bus line.
  • Page 59 Digital Temperature Sensor (Continued) The command “FAN_MAX” that controls the speed of the fans is a PWM signal whose duty cycle is determined by the internal temperature of the unit. The temperature is monitored by a digital temperature sensor mounted on the D board. Changes in temperature are reported to DG board MPU (IC1103) via the IIC bus line.
  • Page 60 Fan SOS The PA board contains the fan drive circuit. To control the speed of the fan, a PWM signal that originates in the DG board Microprocessor(IC1103) is applied to pin 4 of IC5801. The duty cycle of the PWM signal is varied according to the internal temperature of the unit. The result is different levels of DC voltage being applied to the fans to keep the unit cool.
  • Page 61 42PX60 Audio/Video Process GP9DU Chassis plasma televisions incorporate a Set Top Box that is designed to receive NTSC and ATSC television broadcast. It is also used to receive QAM cable television transmission. It is a hybrid tuner that processes NTSC and ATSC terrestrial broadcast for reproduction on the TV screen.
  • Page 62 50PX60 Panel Drive The D board is responsible for displaying the picture on the screen. It provides the scan, sustain and data drive signals. The scan pulses are output to the SC board. The sustain pulses are output to the SS board. The data drive signals are output to the C1, C2, C3, C4, C5 and C6 boards.
  • Page 63 50PX60 Video Input The H board contains the Video inputs 1, 2, and 3, Component Video Inputs 1 and 2, and the Program Out jacks. All the Audio/Video input signals are applied to this board for selection. There are two input selection ICs on this board;...
  • Page 64 50PX60 Audio Input IC2602 of the H board handles the audio selection of all inputs. Audio signals from the digital tuner and the HDMI receiver board (DV board) pass through the DG board and enter IC2602 of the H board via the connector H1/DG1.
  • Page 65 50PX60 Digital Tuner The ATSC interface (DT board) processes the ATSC, NTSC, and QAM television signals. It also processes the Photo viewer (JPEG) data of the SD card. The composite, luminance and chrominance, or component video signals of the DT board are output to the DG board via the connector DT12/DG22.
  • Page 66 50PX60 Video Process 1. The unit contains two HDMI inputs jacks that are mounted on the DG board. The HDMI IF receivers convert the digital signal into parallel Y, U, V data and output to the video interface circuit for selection. The selected HDMI data is output to IC3047 for selection among the other inputs.
  • Page 67 50PX60 Video Process (2) The digital TV and HDMI data are input directly to this integrated circuit. By avoiding digital to analog and analog to digital conversion of those signals, the picture information remains in its original structure. As a result picture quality is pure, and free from noise. The data output of IC4019 enters the RGB Processor, IC4037.
  • Page 68 50PX60 Scan Operation The SC Board consists of buffers and drivers used to generate the scan signals for the PDP panel. The buffers provide isolation between the D board and the drivers. the drive voltages as well as to switch the FET transistors. Connector SC20 provides the the trigger signals from the D board to switch the FETs on and off to create the distinctive scan signal.
  • Page 69 50PX60 Sustain Operation After the video signal is processed on the D board, the sustain and erase pulses are output to the SS board. The erase pulse is output at the beginning of each scan period. The pulse is applied to the SS2 and SS3 boards to remove the previous charge from the the display panel.
  • Page 70 50PX60 Audio Circuit 1. A new digital audio circuit is now incorporated in the GP9DU chassis. Analog audio signals from the H board travel through the DG board and enter the PA board. IC2307 performs analog to digital conversion of the audio signal and outputs to the digital audio controller, IC2304.
  • Page 71 Self-Check and Reset Procedure CHASSIS: GP9D and GPH9D MODELS: TH-42PD60, TH-**PX60, TH-**PX600 Self-check Screen How to access the self-check screen Select a television channel, and while pressing the [VOLUME ( - )] button on the main unit, press the [OK] button on the remote control for more than 3 seconds.
  • Page 72 Interpretation of the Self-Check Screen The result of self-check for Serial data communication between the ICs is displayed as OK (in green) or NG (in red). A communication error in the digital tuner or HDMI is displayed in red numbers instead of Display the cases of SOS (in red)) that have occurred since the last self-check operation .
  • Page 73 Generation Self-Check Screen Check the following boards if NG is displayed in the self-check screen. Check the following boards if NG is displayed in the self-check screen.

  • Page 74: Power Led Blinking Timing Chart

    Power LED Blinking timing chart (1) The unit is equipped with a self-protection circuit that places it in standby when there is an abnormality with one or more circuits. The faulty circuit may be easily identified by counting the number of flashes emitted by the power LED located in front of the unit.
  • Page 75 Power LED Blinking timing chart (2) The unit is equipped with a self-protection circuit that places it in standby when there is an abnormality with one or more circuits. The faulty circuit may be easily identified by counting the number of flashes emitted by the power LED located in front of the unit.

  • Page 76: Serviceman Mode

    Serviceman Mode While pressing the [VOLUME DOWN] button of the main unit, press the [RECALL] button of the remote control three times in a row (within 2 seconds). Adjustment method Use the remote control to navigate through the adjustment menu. # [1] Button to select the Main items in forward direction # [2] Button to select the Main items in reverse direction # [3] Button to select the Sub items in forward direction...
  • Page 77 Contents of adjustment menu Note: After entering the adjustment mode, write down the value of each Sub item before making any adjustment. Use the (VOLUME UP) and (VOLUME DOWN) buttons of the R/C to change the value of the Sub Items. Cancellation To exit the serviceman mode, switch off the...
  • Page 78 Internal Pattern Generator (Aging Mode) To access the internal pattern generator, select [OPTION] from the main adjustment item and press the [OK] button of the remote control for three seconds. Press the OK button to navigate through the different patterns. To exit the internal pattern generator, press the [RETURN] button of the remote control.
  • Page 79 How to access the memory edit mode 1. Select “OPTION” in the Serviceman Mode menu. 2. Press the [MUTE] button on the remote control for more than 3 seconds. To exit Press the [1] button on the remote control. The memory edit feature is not a required adjustment. The only adjustment that may be of interest to a technician is the Time and Count function.
  • Page 80 To exit Press the [Recall] button on the remote control. Memory edit should never be performed unless directed by Panasonic. Although it is listed in the service manual, changing the hexidecimal values may result in the undesirable operation of the unit.
  • Page 81 Driver Setup Adjustment Driver Set-up Item / Preparation 1. Input a white signal to one of the unit’s video input. 2. Set the picture controls as follows: Picture menu: Vivid Picture: +30 Aspect: Full Caution 1. Perform the Vsus adjustment. 2.

  • Page 82: Initialization Pulse Adjustment

    Initialization Pulse Adjustment Initialization Pulse Adjustment 1. Input a 100% White signal to the unit. 2. Set the picture controls as follows: Picture menu : Vivid Picture : +25 Aspect : Full 3. Connect an Oscilloscope to test point TPSC1. Using VR6602, adjust (T2) for 195+/- 10µ...
  • Page 83 Panasonic Services Company Thank you! Thank you! Good day! Good day! Not in the book...

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