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Philips FTV1.9 Training Manual
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Philips FTV1.9 Training Manual

Philips FTV1.9 Training Manual

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PHILIPS SERVICE SOLUTIONS GROUP
FTV1.9 DISPLAY PANEL
TRAINING MANUAL
E BOX
PHILIPS TECHNICAL TRAINING
P H I L I P S
ONE PHILIPS DRIVE
TECH
PO BOX 14810
KNOXVILLE, TN
PHONE: 865-521-4397
VIDEOTAP E S
FAX: 865-521-4818
M A N U A L S
EMAIL: TECHNICAL.TRAINING@PHILIPS.COM
PSSG
AND E-BOX
37914-1810
PLASMA DISPLAY

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Summary of Contents for Philips FTV1.9

  • Page 1 PSSG PHILIPS SERVICE SOLUTIONS GROUP FTV1.9 DISPLAY PANEL AND E-BOX TRAINING MANUAL PLASMA DISPLAY E BOX PHILIPS TECHNICAL TRAINING P H I L I P S ONE PHILIPS DRIVE TECH PO BOX 14810 KNOXVILLE, TN 37914-1810 PHONE: 865-521-4397 VIDEOTAP E S...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PLASMA DISPLAY INTRODUCTION POWER SUPPLY POWER ON CIRCUITS SHUTDOWN CIRCUITS PLASMA PANEL VIDEO FLOW PLASMA PANEL AUDIO PLASMA PANEL BOARD LEVEL TROUBLESHOOTING PLASMA PANEL BOARD LOCATION PLASMA PANEL CUSTOMER SERVICE MODE PLASMA PANEL DISASSEMBLY E-BOX INTRODUCTION E-BOX REAR VIEW E-BOX BOARD LOCATION E-BOX VIDEO SIGNAL FLOW E-BOX WIRING INTERCONNECT...

  • Page 3: Plasma Display Introduction

    INTRODUCTION The FTV1.9 Chassis has a 42 inch diagonal display which uses Plasma Display technology. The Receiver or E-Box contains the Tuning System and AV inputs. The E-Box and Display are designed to work together. Both can be operated alone.
  • Page 4 Display Electrodes are placed over the channels in the Horizontal direction. The Display is then covered by a glass plate. A voltage is applied to the Red, Green, and Blue Address Electrodes corresponding to the desired brightness and color of the displayed pixel.

  • Page 5: Power Supply

    POWER SUPPLY Power Supply Block (Figure 1) AC power for the Display is applied to the Line Conditioner panel. The Line Conditioner panel has the 5 volt Standby supply, On/Off Relays, and a Boost Regulator. The 5 volt Standby supply is present whenever power is applied to the unit.
  • Page 7 5500...

  • Page 8: Power On Circuits

    Standby Power Supply (Figure 2) The Standby Power Supply produces a +5 Volt Standby and a +12 volt Standby supplies. This is a Pulse Width type switching power supply. Power is applied to this circuit when power is applied to the unit.
  • Page 9 FIGURE 3 - POWER ON CIRCUIT FIGURE 4 - LINE CONDITIONER POWER ON Page 7...
  • Page 10 FIGURE 5 - VS SUPPLY BLOCK FIGURE 6 - VS SUPPLY OUTPUT Page 8...
  • Page 11 FIGURE 7 - VA SUPPLY OUTPUT Voltage from Pins 13 and 12 of 5102 are rectified by Bridge 6120 to produce the 65 volt VA supply. (Figure 7) Voltage from Pins 16 and 14 are rectified by Diodes 6121 and 6122 to produce the 17 volt supply.
  • Page 12 FIGURE 8 - VA REGULATION FEEDBACK The 65 volt supply is used as a reference voltage for the VA supply. (Figure 8) The VA supply is sampled by resistors 3124, 3125, and 3126 to produce a reference voltage to drive Shunt Regulator 7110.
  • Page 13 FIGURE 9 - 5.1 AND 8.6 VOLT SUPPLY BLOCK The 17 volt supply feeds the Switching Regulator 7201 which produces the 5.1 volt source. (Figure 9) The output of the Regulator also feeds the 8.6 volt regulator 7203. If the 5.1 volt source reaches 7.4 volts, Zener diode 6205 will conduct, switching SCR 7202 On.
  • Page 14 FIGURE 10 - SEQUENCER PANEL The VS and VA supplies are fed to the Sequencer panel. The Vrr signal from the Plasma Display is monitored by the Sequencer Panel. (Figure 10) If there is a problem on the Plasma Display, Vrr line will go Low.
  • Page 15 FIGURE 11 - OVERVOLTAGE PROTECTION The VS and VA supplies are monitored for overvoltage. If the 65 volt VA supply goes High, the input to Shunt Regulator 7112 will go to 2.5 volts, causing 7112 to conduct. This turn on 7113 which will turn On SCR 7114 which will cause the Aa line go Low.
  • Page 16 FIGURE 12 - FAN PROTECTION CIRCUIT To prevent damage to the Plasma Display, the Fans are monitored to ensure that they are all working. (Figure 12) If any of the Fans should fail, the set will go into shutdown and error code will be generated by the Microprocessor.

  • Page 18: Plasma Panel Video Flow

    SHUTDOWN As shown in Figure 3, the Shutdown circuit turns the set Off in the event of a failure which could damage the set. (Figure 13) If one of the Fans should fail, the Fan Fail Detect circuit will go High turning SCR 7315 On.
  • Page 20 NOTES: Page 18...
  • Page 23 The RGB signals are fed to the PDP Limesco panel. (Figure 16) The signals are fed to a Black Clamping circuit and then to a Gamma Correction circuit. The H_White input controls the gain and Black Clamping level by switching an AGC circuit On or Off. Since the Plasma Display is a Linear display, Gamma must be corrected to Linear to obtain the correct brightness levels across the screen.
  • Page 24 FIGURE 17 - DISPLAY AUDIO SWITCHING DISPLAY AUDIO CIRCUITS Audio switching for the Display is performed on the AVC panel. (Figure 17) VGA Audio is fed to Pins 1 and 30 of 7940 for audio from the E-Box or when using a Computer input. The Digital delays 7910 and 7920 are used when a European Pal Plus signal is used to ensure the correct lip sync.
  • Page 25 FIGURE 18 - AUDIO HIGH/LOW PASS FILTERS The Left and Right internal audio signals are then fed to High and Low pass filters located on the AVC panel. (Figure 18) The Left and Right audio signals are then fed to the Audio Amplifier panel via AVC89.
  • Page 26 FIGURE 19 - AUDIO AMPLIFIER Audio Amplifier (Figure 19) The Audio Amplifier is powered by a plus and minus 19 volts from the VS supply. These supplies are labeled +VSND and -VSND. There are four audio channels, Left High, Left Low, Right High, and Right Low.
  • Page 27 TO RIGHT SPEAKERS FIGURE 20 - AUDIO PROTECTION CIRCUITS To prevent damage to the speakers in the event of an Audio Amplifier or Power Supply failure, a protection circuit has been added. (Figure 20) This circuit guards against a voltage imbalance in the supplies or a dc voltage on the audio output lines.
  • Page 28 FROM VS-VA PANEL FROM AVC PANEL FIGURE 21 - AUDIO AMPLIFIER WIRING INTERCONNECT Page 26...
  • Page 29 TO - FROM VS-VA PANEL AC INPUT PRECONDITIONER PANEL (Figure 22) The Preconditioner panel provides Standby voltage and 380 volts dc to the VS-VA supplies. If there is no standby light on the unit, check the 5 volt standby voltage on PR08 Pin 6. When the On/Off button is pressed, the +5VSTBY voltage on PR08 Pin 5 should appear.
  • Page 30 TO AVC PANEL FIGURE 23 - SWITCH AND LED PANEL SWITCH AND LED PANEL (Figure 23) The Switch panel switches the panel from an Off mode to a Standby mode. Once the set is in the Standby Mode, it can be operated with the Remote Control. The +5VSTBY is switched to the operating circuits of the set via the +5VSTBY-SW line.
  • Page 31 FIGURE 24 - VS-VA SUPPLY WIRING INTERCONNECT VS-VA SUPPLY (Figure 24) If the Standby LED is On, check the Standby line on Pin 10 of FD04. This line should go Low when the set is turned On. If it does not go Low, the problem is on the AVC or Microprocessor panel. If this line goes Low, the 180 and 65 volt supplies should come On.
  • Page 32 FIGURE 25 - SEQUENCER PANEL SEQUENCER PANEL (Figure 25) The Sequencer panel connects the VS-VA supply panel to the Plasma Display Panel. It also switches the VA to the Display Off if there is a problem on the Vrr line. When the set is turned On the Vrr line should go to approximately 3 volts.
  • Page 34 AV CONTROL PANEL (Figure 26) The AV Control Panel provides Video processing and switching, Audio processing and switching and interface for the Microprocessor. RGB from the E-Box or computer is input on AVC32 and is output on AVC36. The Microprocessor is connected to the AV Control panel on 7401. Output to the PDP Limesco panel is on connector AVC02.
  • Page 38 SERVICE MODES CUSTOMER SERVICE MODE The Customer Service mode (CSM) allows the Customer to read error codes with the instruction of the Technician. This mode also disables any Customer settings such as Channel blocking. To enter the CSM, press the following keys on the Display remote, Picture, sound, cursor up, cursor down, cursor left, cursor right, followed by the mute...
  • Page 39 DISASSEMBLY Remove the unit from the wall and place on a soft cloth facing up Using a #15 Torx, remove the the eight screws holding the Front Cover in place. The Front Cover is hinged on top. Lift the bottom up first, then lift up. Unplug the LED display and set the front cover aside.
  • Page 40 Remove the 16 EMC shielding springs mounted around the Display. Unplug the Switch Panel and Speakers. Place the Display face down on a foam cushion. Using a #10 Torx, remove the 9 screws securing the Rear Cover. Using a #10 Torx, Using a #20 Torx, remove the four screws securing the wall mount to the chassis and Plasma Display.
  • Page 41 Remove the screws from the VS/VA supply and the PDP Limesco panels. Two of the screws securing the Plasma Panel to the chassis are under these panels. Unplug FD173 and FD171 from the Sequencer Panel. Unplug PD3 from the PDP Limesco panel. Remove the strain relief from the main chassis.
  • Page 42 Using a #20 Torx, remove the four remaining screws securing the chassis to the Plasma Panel. See the following picture for the hidden screws. VS/VA POWER PDP LIMESCO SUPPLY PANEL PANEL Lift the chassis off the Plasma Panel. To reassemble, follow the reverse order. Page 40...
  • Page 43 FTV1.9 E-BOX The E-Box is designed to work with the Display panel. However, for troubleshooting, the E-Box can be connected to a Computer monitor. The E-box has three composite video inputs and one antenna input. (Figure 26) On AV3, it also has a European Scart input.
  • Page 46 FIGURE 32 - HD INTERFACE BLOCK The E-Box is capable of accepting a 1080i HD Component input signal. (Figure 32) The Y Pr Pb HD Component input signal is amplified and sent to a YUV to RGB matrix. The RGB signal is then fed to a switch which is enabled by the OUTPUT ENABLE line.

  • Page 48: E-Box Video Signal Flow

    E-BOX VIDEO SIGNAL FLOW (Figure 33) Video from the Tuner, Front Jack panel, and YUV panel is fed to the Global I/O Panel (Jack panel). The Global I/O panel selects between the Tuner, Front Jack panel, YUV panel, or AV inputs on the I/O panel.
  • Page 51 Page 49 FIGURE 36 - GLOBAL I/O AND AV BUFFER...
  • Page 53 FIGURE 38 - CLOSED CAPTION AND TEXT PANEL Page 51...
  • Page 54 FIGURE 39 - FRONT I/O PANEL Page 52...

  • Page 55: E-Box Wiring Interconnect

    FIGURE 40 - E-BOX WIRING INTERCONNECT Page 53...
  • Page 56 SERVICE ALIGNMENT MODE (SAM) The Purpose of the SAM is make Service alignments. The SAM mode can be entered by pressing 062596 Index on the Remote Control or by shorting the SAM pins on the SSP. The Error Buffer can also be cleared in the SAM. If the Plasma Display is connected, the Remote must be pointed at the Display to enter SAM.
  • Page 57 CUSTOMER SERVICE MODE (CSM) The Customer Service Mode allows the Customer to read Error codes and other information with the instruction of the technician. To enter the CSM, press the Menu button on the E-Box and at the same time press the Mute button on the Remote. Use the P+ and P- buttons on the Remote to change from page one to page two.

  • Page 58: E-Box System Control

    E-BOX SYSTEM CONTROL The System Control Microprocessor 7200 controls the E-Box via the Remote Control and Front Keyboard. The System Software is located in the ROM 7202. The RAM 7206 stores changes to the parameters of the set while in operation. This memory is cleared when the set is switched Off. The Non Volatile Memory NVM 7212 stores Option Codes, Sound, and Picture adjustments.
  • Page 59 MMARTIN REV 08/09/2001...

This manual is also suitable for:

E-box