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Philips FL9.1 Technical Training Manual

Lcd tv chassis for 2009.
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TECHNICAL TRAINING
FL9.1 LCD TV
CHASSIS FOR
2009
P & F USA, INC
SUITE 100
3015 WINDWARD PLAZA
ALPHARETTA, GA 30005

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Table of Contents

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   Summary of Contents for Philips FL9.1

  • Page 1 TECHNICAL TRAINING FL9.1 LCD TV CHASSIS FOR 2009 P & F USA, INC SUITE 100 3015 WINDWARD PLAZA ALPHARETTA, GA 30005...
  • Page 2: Table Of Contents

    Table of contents Introduction ............1 Models covered .
  • Page 3: Introduction

    Introduction The FL9.1 TV chassis is designed for the 2009 model year. The tuning system is designed to tune both antenna and cable analog and digital signals. The screen size for this chassis is 32 inches with a pixel resolution of 1366 x 768p. Whatever signal is fed to the set will be rescaled to fit the resolution of the screen.
  • Page 4: Menus

    HDMI v1.3, S-video in, CVBS in, Audio L/R in, USB (software upgrade only) The FL9.1 chassis has the Philips EasyLink (HDMI-CEC) capability. This feature has addi- tional function compared to the 2008 Philips sets. This feature is referred to as CEC in the Magnavox, Sylvania and Emerson products.
  • Page 5 0000. Current Software can also be viewed. To load new software: (Philips Only) 1. Down the latest version from the customer website *.zip. 2. Unzip the file and extract the *.ecc file and load it in to the root directory of a USB drive.
  • Page 6: Customer Menu Map

    SETTING ASSISTANT PICTURE AUTO PICTURE PERSONAL BRIGHTNESS STANDARD SOUND CONTRAST SPORTS COLOR MOVIE SETUP TINT GAME SHARPNESS FEATURES NORMAL COLOR TEMPERATURE WARM LANGUAGE COOL AUTO SOUND PERSONAL EQUALIZER STANDARD VIRTUAL SURROUND SOUND MOVIE AUTO VOLUME LEVELING MUSIC TV SPEAKERS NEWS AUTOPROGRAM CHANNEL LIST SPEAKERS EASY LINK...
  • Page 7: Software Upgrade

    IR Board Set Back view Repair The FL9.1 chassis is designed for board level repair. To assist with troubleshooting, compo- nent level function will be discussed. The Digital Main board has the microprocessor and signal processing circuits. The HDMI and USB inputs are located on the Digital Main board.
  • Page 8: Board Level Repair

    Board Level Repair (Figure 2) The Fl9.1 chassis is designed for board level repair. Standby mode In Standby, the processor on the Digital Main board is powered by the AL+3.3V supply. This voltage can be measured on pins 21 and 22 of connector CN301 on the power supply board.
  • Page 9 The Function (Keyboard) is hard-wired to the IR Sensor board and it to the Junction board. Only the KEY-IN1 is used for the keyboard. The KEY-IN2 is used in other chassis with a built in DVD player. IR Board Junction Board Raw DC is supplied to the Inverter board via connector CN602 on the power supply board.
  • Page 10: Wiring Interconnect Diagram

    DIGITAL MAIN CBA UNIT CN301 CN3701 P-ON-H2 AUDIO(L)-OUT COMPONENT -Y-IN AUDIO(R)-OUT CN1050 POWER SUPPLY CBA PROTECT3 BACK COMPONENT AMP(L)-OUT CN3902 LIGHT -Pb-IN CN602 CN1900 TU301 TUNER UNIT AMP(R)-OUT COMPONENT HOT-GND CN1100 -Pr-IN P-ON-H1 BACK P-ON+3V CN201 CN1001 LIGHT PROTECT1 COMPONENT- HDMI- AUDIO(L)-IN INV+16V...
  • Page 11: Video Signal Flow

    Video Signal flow (Figure 3 & 4) Figure 3 The composite and S-video inputs are located on the side jack panel. These signals are fed to the the power supply on hard wired connecter CL701A. The one component input is locat- ed on the power supply panel.
  • Page 12: Video Signal Flow Block

    VIDEO SIGNAL AUDIO SIGNAL JK752 VIDEO-IN CL701B CL701A CN302 CN3702 VIDEO-IN VIDEO-IN VIDEO-IN S-VIDEO-C-IN S-VIDEO-C-IN S-VIDEO-C-IN S-VIDEO-Y-IN S-VIDEO-Y-IN S-VIDEO-Y-IN JK751 S-VIDEO-SW S-VIDEO S-VIDEO-SW-IN S-VIDEO-SW COM-VIDEO-Y-IN COM-VIDEO-Y-IN COM-VIDEO-Pb-IN COM-VIDEO-Pb-IN COM-VIDEO-Pr-IN COM-VIDEO-Pr-IN JACK CBA TO DIGITAL SIGNAL PROCESS JK731 BLOCK DIAGRAM COMPONENT -Y-IN JK732 COMPONENT...
  • Page 13: Video Signal Flow Block Two

    Page 11 FIGURE 4 - VIDEO SIGNAL FLOW TWO...
  • Page 14: Audio Signal Flow

    The waveform to the right is the POL signal on CN3902, pin 5. The waveform to the right is the TP signal on CN3902, pin 6. The waveform to the right is typical of the ones carrying the picture information. This signal is measured on pin 8 of CN3902.
  • Page 15: Audio Signal Flow Block

    AUDIO SIGNAL CL701B CL701A JK753 AUDIO(L)-IN AUDIO(L) AUDIO(R)-IN JK754 IC771 AUDIO(R) (AUDIO SELECTOR) JACK CBA JK741 COMPONENT- AUDIO(L)-IN JK742 COMPONENT- CN302 CN3702 DIGITAL AUDIO(R)-IN AUDIO(L) SIGNAL AUDIO(L) PROCESS CONTROL AUDIO(R) AUDIO(R) BLOCK LOGIC DIAGRAM CN302 CN3702 Q771 INPUT1 SYSTEM INPUT1 JK721 INPUT0 CONTROL...
  • Page 16: Power Supply Block

    CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. NOTE: CAUTION ! : For continued protection against risk of fire, If Main Fuse (F601) is blown , check to see that all components in the power supply The voltage for parts in hot circuit is measured using replace only with same type 4 A, 125V fuse.
  • Page 17: Power Supply

    Power Supply (Figure 6) AC is fed the line filters and bridge rectifier. RAW DC is fed to the Inverter via connector CN602 on the power supply board and to transformer T601. The switch mode supply consist of transistors Q601 and Q602. In standby, the power supply is running in a low power pulsating mode controlled by Q634 on the secondary side.
  • Page 18: Protect 2

    +33V R660 R662 R663 1.8K Q635 R664 1.8K D659 6.8V IC631 D636 D660 D637 3.3V AL3.3V R636 PROTECT2 D407 D418 3.9V FIGURE 8 - PROTECT 2 Protect 2 (Figure 8) Protect 2 monitors the circuit feeding the 3.3V standby supply. In the standby mode, the +33V supply will measure approximately 8 volts.
  • Page 19: Inverter

    Inverter (Figure 9) The inverter power supply is switched On by the BACKLIGHT-SW line from the digital board. The BACKLIGHT-ADJ line is fed to IC1000 to control the pulse width output of IC1000 and the brightness of the backlight. The outputs to the backlights are fed to over voltage protec- tion circuits.
  • Page 20: Inverter Signal Flow Block

    NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal. HOT CIRCUIT. BE CAREFUL. T1050 INV+16V CN1050 T1950 TO POWER CN1900 BACK SUPPLY LIGHT BLOCK Q1801,Q1802, DIAGRAM HOT-GND Q1803,Q1804 (CN602) Q1800,Q1815 SW+16V SW+16V IC1000 T1100 (PWM CONTROL)
  • Page 21: System Control Block

    RS101 IC3301 JUNCTION (MAIN MICRO CONTROLLER) REMOTE SENSOR D101 CN101 CN101 CL102A CL102C POWER REMOTE REMOTE P-ON-H1 P-ON-H1 Q172 KEY-IN1 KEY-IN1 8 DVD-LED 8 DVD-LED CN3702 CN302 KEY-IN1 KEY-IN1 AL+6.0V CN3701 CN301 CL103B CL103A REMOTE REMOTE KEY SWITCH KEY-IN1 P-ON-H2 P-ON-H2 AB13 P-ON-H1...
  • Page 22: Service Mode

    To enter the service mode, it is necessary to press a hidden button on the remote control. As shown to the right, it is necessary to have a Magnavox remote for entering the service mode for the Magnavox and Philips models. Service mode for the Sylvania LC320SLX and Emerson LC320EMX.
  • Page 23 The Service screen is shown to the right. Refer to Figure 11 for the service menu map. To Initialize the set which puts it in an out of box condition, press the Info button on the remote while in the service screen.
  • Page 24: Service Menu Map

    SERVICE BUTTON INFO MENU INITILIZED CURSOR LF 2, 3, 5, 6 MAIN MENU CURSOR RG BLACK SCRN CH UP CH DOWN LEFT VOL- CURSOR SCREEN SHADE GRY TEST MODE WHITE SCREEN SOFTWARE UPDATE CH UP CH DOWN CHANNEL 2 SHADE WH CURSOR UP, THEN CURSOR DOWN TO EXIT VOL-...
  • Page 25: Troubleshooting Flow Chart

    Repair or replace Dead set the power supply. Connect the set to AC power Does the power LED turn Is the AL+3.3V supply present? On when the power button Measure on pin 21 of CN301 on the is pressed? power supply. Replace the Digital Main board.
  • Page 26 Power LED Flashes Disconnect the Digital Main board from the Power Supply. Jumper to the AL3.3V supply to the P-ON-H1 and P-ON-H2 to force the power supply On. Replace the Inverter board. Repair or replace Is Protect2 (Pin 15 of High Does the BACKLIGHT-SW on pin the power supply.
  • Page 27 Video Does video return after Check remaining connecting an antenna and inputs. auto-programming. Replace the digital main board. Does video appear after reseating Is video present after connecting a the ribbon cables connecting the signal to one of the AV inputs and power supply to the digital board? selecting that input? Replace the...
  • Page 28 Backlight Flashes Turn the set On while monitoring the HV output from the Inverter board at each output one at a time. Repeat for each of the five locations. It is only necessary to place the scope probe in the proximity of the output as shown at the right.
  • Page 29 Audio Turn the volume Is audio present Change the Digital Main on pins 6 and 8 of board. CN301? Is the audio mute Change the Digital on pin 20 of CN302 Main board. zero volts. (<0.4V) Change the power supply board. TROUBLESHOOTING FLOW CHART Page 27...
  • Page 30: Abbreviation List

    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 IC bus Integrated IC Sound bus 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.
  • Page 32: Service Tips

    Service Tips Symptom: Lines in the picture as shown in the picture to the right. Cause: Defective Digital Main board. Symptom: High frequency noise from the TV when Off. Cause: Audio amplifier not being shut off during standby. Cure: Upgrade software. Symptom: No audio on some analog channels.
  • Page 34 MM081909...

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