Philips L05HD Training Manual
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Philips L05HD Training Manual

Philips L05HD Training Manual

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PHILIPS TECHNICAL TRAINING
L05HD TRAINING MANUAL
PHILIPS CONSUMER ELECTRONICS
64 PERIMETER CENTER EAST
PO BOX 467300
ATLANTA, GA 31146-7300
MM032205

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  • Page 1 PHILIPS TECHNICAL TRAINING L05HD TRAINING MANUAL PHILIPS CONSUMER ELECTRONICS 64 PERIMETER CENTER EAST PO BOX 467300 ATLANTA, GA 31146-7300 MM032205...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ..........1 POWER SUPPLY .

  • Page 3: Introduction

    Introduction The L05HD TV chassis is designed for the model year 2005. This set is High Definition ready with an NTSC tuning system. To receive the ATSC channels a set top box is required. This design is used in large screen sizes of 27 and 30 inch with the 27-inch having a 4:3 aspect ration and the 30 inch version having a 16:9 aspect ratio.
  • Page 4 Press the Menu button on the remote and press the Cursor up-down button to obtain the following screens. Page 2...
  • Page 5 Setting up the access code. 1. Press the Menu button on the remote Features Main to display the on-screen menu. Timer Picture Timer Timer Rotation Sound Start Time Rotation AutoLock Stop Time Features AutoLock Active Control Install Active Control Channel 2.

  • Page 6: Power Supply

    Power Supply Block (Figure 1) The Power supplies are both located on the Family board. The supplies are divided into two sections, the Auxiliary and Main section. A single filter and rectifier circuit supplies both sections. The Auxiliary supply operates in a low power mode when the load is reduced. In the standby mode, the 3.3 and 6 volt supplies are operating.
  • Page 7 Auxiliary Power Supply (Figure 2) IC 7510 is the heart of the Auxiliary Power supply. In the Standby mode, VIA the current sensing and Control circuits, a low power condition is detected by the IC. The IC then goes into a Burst Mode operation to reduce the power used by the circuit. In the Burst Mode, the supply will operate at approximately 25 kHz.

  • Page 8: Auxiliary Power Supply

    AUXILIARY POWER SUPPLY To 1533 Of 1533 +3V3A +3V3A 1534 Source Select + Vaux_GND1 Vaux_GND Microcontroller 9509 Vaux_GND Vaux_GND1 9554 I565 2586 Vaux_GND MAINSUPPLYGND 4567 Vaux_GND 21 On 330p I557 11.8 Off 6532 9536 +6VA 9523 I534 BAV21WS F534 POWER_DOWN 4551 7585 Vaux_GND1...

  • Page 9: Main Power Supply

    Main power supply (Figure 3) The Main Power supply provides the VBAT (141 volt), and Audio voltage supplies. This sup- ply is switched Off during the Standby mode. During Standby the STBY_Con line is High which turns Transistor 7573 On. This causes the opto-isolator 7513 to turn On hard. This places a higher voltage on the control Pin of IC 7511 causing the IC to shut down.
  • Page 10 POWER SUPPLY REGION NAFTA MAIN RANGE 27VRF-HD 30WSRF-HD Vbat 143V 143V AUDIO OUTPUT 2X10w 2X10w 1572 1577 2506 5500 9502 9504 9506 +Vaudio AC_IN 9572 I543 9577 I506 9506 1503 LKS1AF I583 I582 2506 3508 DEGAUSSING COIL 220R 9512 1504 F502 F500 5502...

  • Page 11: Deflection Sync

    Deflection Sync (Figure 4) Whatever signal is applied to the L05 chassis, it will display the picture in a 1080i format. This means that the Line or Horizontal frequency is always 33.75 kHz. The Vertical or Frame rate is 60 Hz. Vertical Sync is output from the Trident IC 7201 on Pin 35.

  • Page 12: Tv Signal Processor

    TV Signal Processor (Figure 5) Red, Green, and Blue from the Trident IC is input on Pins 30, 31, and 32 of 7221, TV Display Processor. The RGB/YUV matrix changes the signal to a YUV signal before feeding it to a Color level control circuit.
  • Page 13 FIGURE 5 - TV SIGNAL PROCESSOR Page 11...
  • Page 14 LINE + FRAME DEFLECTION F402 +12V_LOT Vbatt 1401 5456 CD25405-00 SVM_ROT F462 A5,B1 EHTinfo +12V_LOT F483 GND_HOR GND_HOR A2,A5 VideoSupply 3474 F472 EHTinfo F416 F401 3401 VT_Supply 2474 CRT_GND 5450 Filament 2492 150p F455 TO 1351 OF 470p GND_DEF GND_DEF GND_DEF F404 2431...
  • Page 15 Set Control (Figure 7) The L05HD has two microprocessors, The Hercules located on the Family board and the TV Controller located on the Trident board. The Hercules, 7200, provides control for the entire set. During standby, the Hercules and the Remote sensor are powered by the 3.3 volt supply.

  • Page 16: Control

    FIGURE 7 - CONTROL Page 14...

  • Page 17: Video Signal Flow

    Video Signal flow overview (Figure 8) There are two sections in the set for processing video. The 1fH section using the Hercules processes NTSC signals. The Tuner is controlled by the microprocessor in the Hercules. IF from the Tuner is fed to the Hercules chip for detection and demodulation.
  • Page 18 TV Display Processor (Refer to Figure 5) IC 7221 is used in a large number of Philips chassis for a long period of time. RGB in insert- ed in Pins 30, 31, and 32. This signals are converted to a YUV format before being fed to the Color level control.
  • Page 19 FIGURE 9 - DETAILED VIDEO SIGNAL FLOW BLOCK Page 17...

  • Page 20: Crt Drive

    CRT panel (Figure 10) RGB is fed to the CRT panel on connector 1331. The CRT panel for the L05HD has a single chip CRT drive circuit. RGB is fed to 7330 on Pins 1, 2, and 3. Signal is output to the CRT on Pins 7, 8, and 9.
  • Page 21 CRT PANEL AQUADAG WIRE EHTinfo I352 3356 I357 1332 0330 +200VA HEATSINK TYPE CRT Sockets 7330 200V 188k7 1256 1254 Blue I337 3k77 I330 F338 3333 3334 OUT1 3k75 156V I336 Vref 100R I333 188k7 F339 Green 3336 I338 3k77 I331 3335 F340...
  • Page 22 FIGURE 11 - SVM AND ROTATION Page 20...

  • Page 23: Audio

    Audio (Figure 12) All audio processing and control is performed by the Hercules IC 7200 located on the main board. Audio is included in the HDMI bit-stream. Digital audio from 7002 is fed to IC 7011, Audio DAC. Audio from 7011 is fed to IC 7050, switch, which has only one input since the second input is not used in the HD version.
  • Page 24 FIGURE 13 - AUDIO OUTPUT Page 22...

  • Page 25: Side Jack Panel

    HEADPHONE 1278 1232 I166 I170 1254 3156 I168 SPEAKERS F154 1279 ECO SUB 3157 I171 I162 I163 I169 FIGURE 14 - SIDE JACK PANEL turned Off turning 7994 On, muting the output. Capacitor 2999 delays the turn-on of 7993 to prevent a pop in the speaker at set turn On.
  • Page 26 Wiring Diagram DEGAUSSING COIL TOP CONTROL PANEL AQUADAG 16:9 1010 FRAME ROTATION CRT PANEL COIL (component view) 1340 GREY ORANGE BLUE BROWN LEFT RIGHT 1336 SPEAKER SPEAKER SCAVEM COIL 1352 SOCKET 1335 CRT PANEL BLACK BLACK 1361 1351 1381 1693 1211 MAINS CORD...
  • Page 27 FIGURE 16 - WIRING INTERCONNECT Page 25...
  • Page 28 SERVICE POSITION Page 26...
  • Page 29 Service Alignment Mode SAM (Figure 17) Making changes in the settings requires entering the SAM. To enter SAM, press 0 6 2 5 9 6 Info on the remote control. Use the cursor-up and cursor-down buttons to highlight a selec- tion.
  • Page 30 Abbreviation list Description 1080i 1080 visible lines, interlaced 1080p 1080 visible lines, progressive scan 480i 480 visible lines, interlaced 480p 480 visible lines, progressive scan ADC A/D Analogue to Digital Converter Automatic Frequency Control: control signal used to tune to the correct frequency Automatic Gain Control: algorithm that controls the video input of the feature box...
  • Page 31 Integrated Circuit Intermediate Frequency Interlaced Scan mode where two fields are used to form one frame. Each field contains half the number of the total amount of lines. The fields are written in 'pairs', causing line flicker. Infra Red Interrupt ReQuest Last Status The settings last chosen by the customer and read and stored in RAM or in the NVM.

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