TECHNICAL TRAINING FL9.
Table of contents Introduction . . . . . . . . . . . . . Models covered . . . . . . . . . . Formats Supported . . . . . . . Menus . . . . . . . . . . . . . . . . . Software Upgrade . . . . . . . . Customer Menu Map . . . . . . Board Locations . . . . . . . . . Board Level Repair . . . . . . . Wiring Interconnect Diagram Video Signal Flow . . . . . . . . Video Signal Flow Block . . . Video Signal Flow Block two Audio Signal Flow . . . . . . . . Audio Signal Flow Block . . . Power Supply Block . . . . . .
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.
Connectivity AV1 HDMI1 HDMI2 Audio output Side Audio L/R in, YPbPr HDMI v1.3, Analog audio L/R in HDMI v1.3 Digital Coaxial 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 additional function compared to the 2008 Philips sets. This feature is referred to as CEC in the Magnavox, Sylvania and Emerson products.
Setup Menu In the Setup Menu, channels can be programmed using Autoprogram. Channels can be deleted from the channel ring using Channel List. Add Channels can be used to to add channels not picked up during Autoprogram. Antenna is only available in the Antenna mode. Features Among other things, Location, Child lock, and Closed Caption can be selected in the Features menu. This is called the Details menu in the Magnavox, Sylvania and Emerson sets. Out of box, the Child Lock pin is 0000.
Page 4 PICTURE SOUND SETUP FEATURES SETTING ASSISTANT AUTO PICTURE BRIGHTNESS CONTRAST COLOR TINT SHARPNESS COLOR TEMPERATURE LANGUAGE FIGURE 1 - CUSTOMER MENU MAP AUTO SOUND EQUALIZER VIRTUAL SURROUND SOUND AUTO VOLUME LEVELING TV SPEAKERS AUTOPROGRAM CHANNEL LIST ADD CHANNELS ANTENNA CLOSED CAPTION CHILD LOCK PC SETTINGS ENERGY SAVING MODE LOCATION CURRENT SOFTWARE INFO ENGLISH ESPANOL FRANCAIS PERSONAL STANDARD SPORTS MOVIE GAME NORMAL WARM COOL PERSONAL STANDARD MOVIE MUSIC NEWS ON OFF SPEAKER
Inverter Keyboard Side Jack Power Supply Digital Main IR Board Set Back view Repair The FL9.1 chassis is designed for board level repair. To assist with troubleshooting, component 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. The USB port on this chassis is only used for software upgrade. The Tuner AV inputs and Audio Amplifier are located on the Power Supply board.
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. Power On When the set is turned On by the keyboard or the remote, the processor on the Digital Main board switches the P-ON-H1 and P-ON-H2 lines High. This switches the power supply to the full power mode.
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. Operating voltages INV+16V, LCD+16, P-ON+3.3V and LCD-6.8V supplies are fed to the Inverter board via connector CN201. The Inverter is switched On by the BACKLIGHT-SW voltage.
Page 8 COMPONENT -Y-IN COMPONENT -Pb-IN COMPONENT -Pr-IN COMPONENTAUDIO(L)-IN COMPONENTAUDIO(R)-IN FIGURE 2 - WIRING INTERCONNECT DIAGRAM HDMIAUDIO(L)-IN HDMIAUDIO(R)-IN DIGITAL AUDIO-OUT (COAXIAL) AUDIO(L) -OUT AUDIO(R) -OUT AC601 AC CORD CN301 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CN302 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CN3701 1 P-ON-H2 AUDIO(L)-OUT 2 3 GND AUDIO(R)-OUT 4 PROTECT3 5 AMP(L)-OUT 6 GND 7 AMP(R)-OUT 8 P-
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 located on the power supply panel. All of these signals are fed to the Digital Main board via connector CN302 on the power supply board. Tuner TU301 tunes both analog and digital channels.
Page 10 VIDEO SIGNAL AUDIO SIGNAL JK752 VIDEO-IN WF2 C CL701B 5 3 1 2 Y JK751 S-VIDEO -IN VIDEO-IN S-VIDEO-C-IN S-VIDEO-Y-IN S-VIDEO-SW-IN WF3 WF1 CL701A 5 3 1 2 CN302 4 6 8 5 15 17 19 JACK CBA WF4 WF5 CN3702 4 6 8 5 COM-VIDEO-Y-IN 15 COM-VIDEO-Pb-IN 17 COM-VIDEO-Pr-IN 19 VIDEO-IN S-VIDEO-C-IN S-VIDEO-Y-IN S-VIDEO-SW VIDEO-IN S-VIDEO-C-IN S-VIDEO-Y-IN S-VIDEO-SW COM-VIDEO-Y-IN COM-VIDEO-Pb-IN COM-VIDEO-Pr-IN WF6 FIGURE 3 - VIDEO SIGNAL FLOW ONE TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM J
FIGURE 4 - VIDEO SIGNAL FLOW TWO Page 11 TMDS-D0(+) TMDS-D0(-) TMDS-D1(+) TMDS-D1(-) TMDS-D2(+) TMDS-D2(-) TMDS-CLOCK(+) TMDS-CLOCK(-) SDA SCL TMDS-D0(+) TMDS-D0(-) TMDS-D1(+) TMDS-D1(-) TMDS-D2(+) TMDS-D2(-) TMDS-CLOCK(+) TMDS-CLOCK(-) SDA SCL 7 9 4 6 HDMI-IN3 1 3 10 12 16 15 TMDS-D0(+) TMDS-D0(-) TMDS-D1(+) TMDS-D1(-) TMDS-D2(+) TMDS-D2(-) TMDS-CLOCK(+) TMDS-CLOCK(-) SDA SCL JK3703 7 9 4 6 HDMI-IN2 1 3 10 12 16 15 JK3702 7 9 4 6 1 HDMI-IN1 3 10 12 16 15 JK3701 TO AUDIO BLOCK DIAGRAM TO VIDEO B
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. Similar signals are present on pins 9, 10, 11, 12, 13, 15, 16, 18, 19, 20, 21, 22 and 23. Audio Signal Flow (Figure 5) AV audio from the side jack panel is fed to the power supply via connector CL701A.
AUDIO SIGNAL CL701B 7 AUDIO(L)-IN 9 AUDIO(R)-IN JK753 AUDIO(L) -IN JK754 AUDIO(R) -IN CL701A 7 9 IC771 (AUDIO SELECTOR) 2 4 1 5 3 15 11 12 14 13 JACK CBA JK741 COMPONENTAUDIO(L)-IN JK742 COMPONENTAUDIO(R)-IN WF7 FIGURE 5 - AUDIO BLOCK CONTROL LOGIC 9 10 JK721 HDMIAUDIO(L)-IN JK722 HDMIAUDIO(R)-IN Q771 CN302 13 AUDIO(L) 11 AUDIO(R) CN3702 13 11 CN302 10 INPUT1 12 INPUT0 CN3702 10 12 TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM INPUT1 INPUT0 AUDIO-MUTE TO SYSTEM CONTROL BLOCK DIAGRAM Q772 IC380
Page 14 CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail. 4A/125V CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse.
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. When the set is turned On, the P-ON-H1 and P-ON-H2 lines goes High.
+33V R660 R662 15 R663 1.8K Q635 R664 1.8K D659 6.8V D660 D636 2.7 IC631 D637 3.3V REG AL3.3V R636 2.7 PROTECT2 D407 10V 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. When the set is turned On, it will go to +33V as the power supply goes to a full power mode. Q635 regulates the voltage feeding IC631, AL3.3V regulator.
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 protection circuits. If a problem is detected in one of the outputs, Q1600 is turned On causing the Protect 3 line to go Low. This will cause the set to turn Off.
HOT CIRCUIT. BE CAREFUL.
IC3301 (MAIN MICRO CONTROLLER) CN101 2 5 6 8 Q172 KEY-IN1 AC5 REMOTE P-ON-H2 P-ON-H1 R22 RS101 JUNCTION CBA CN3702 29 KEY-IN1 CN302 29 CN3701 25 REMOTE 1 P-ON-H2 9 P-ON-H1 CN301 25 1 9 REMOTE P-ON-H1 KEY-IN1 DVD-LED CN101 2 5 6 8 CL102A 2 5 6 8 REMOTE SENSOR REMOTE P-ON-H1 KEY-IN1 DVD-LED CL102C 2 5 6 8 D101 POWER AL+6.
Service Mode In the service mode, it is possible to generate screen test patterns, Initialize the set or make grey scale alignments. 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. Remote for the LC320SSX.
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. The word Initialized will turn green indicating that the initialization is complete. After initializing the set, the customer will be prompted to enter a language and program the TV when it is turned On for the first time.
SERVICE BUTTON INFO MENU INITILIZED CURSOR LF 2, 3, 5, 6 MAIN MENU CURSOR RG BLACK SCRN CH UP 7 CH DOWN VOL- SHADE GRY CH UP CH DOWN LEFT CURSOR SCREEN TEST MODE WHITE SCREEN SOFTWARE UPDATE CHANNEL 2 CURSOR UP, THEN CURSOR DOWN TO EXIT SHADE WH 7 VOLCH UP CH DOWN BLACK SCREEN DEBUGGING MESSAGE SHADE RED 7 CH UP CH DOWN 7 VOL- GREEN 1 CH UP CH DOWN CD 2 BLUE CH UP 3 CH DOWN 4 WHITE 7 COG - CUTOFF GREEN COB - CUTOFF BLUE GREEN SCREEN DR - DRIVE RED 7 5 CH UP RED SCREEN CO
Repair or replace the power supply. Dead set No Connect the set to AC power Does the power LED turn On when the power button is pressed? Is the AL+3.3V supply present? Measure on pin 21 of CN301 on the power supply. No Replace the Digital Main board. No Yes Is 3.3 volts present on pin 29 of CN302? Does KEY-IN1, pin 6 of CN101 read 3.3 volts with no keyboard buttons being pressed? No Repair or replace the power supply board.
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. Yes Is Protect2 (Pin 15 of CN301) Low? Repair or replace the power supply. High No Low Is Protect1 (Pin 11 of CN301) High (2.4V)? Does the BACKLIGHT-SW on pin 5 of CN201 go to 3.3 Volts when the set is turned On? Replace the Digital Main board. One or more of the B+ supplies are missing.
No Video Does video return after connecting an antenna and auto-programming. No Is video present after connecting a signal to one of the AV inputs and selecting that input? Check remaining inputs. Yes Replace the digital main board. No No Does video appear after reseating the ribbon cables connecting the power supply to the digital board? Yes Replace the power supply board. Yes No Is tuner video present after auto-programming? Check remaining inputs.
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. If you connect directly, use a X100 probe. The waveform will appear as shown to the right if the output is working. Is output present at each location? No Replace the Inverter board. Yes The panel is most likely defective.
No Audio Turn the volume up. Is audio present on pins 6 and 8 of CN301? No Change the Digital Main board. Yes Is the audio mute on pin 20 of CN302 zero volts. (<0.4V) No Change the Digital Main board. Yes Change the power supply board.
Abbreviation list Description 1080i 1080p 480i 480p ADC A/D AFC AGC AM AV C-FRONT CBA ComPair CSM CVBS CVBS-EXT CVBS-INT CVBS-MON CVBS-TER-OUT DAC DFU DNR DRAM DSP DTS DVD EEPROM EPLD EXT FBL FLASH FM FMR FRC FRONT-C FRONT-DETECT FRONT-Y_CVBS H HD HDMI HP Page 28 1080 visible lines, interlaced 1080 visible lines, progressive scan 480 visible lines, interlaced 480 visible lines, progressive scan Analogue to Digital Converter Automatic Frequency Control: control signal used to tune to the correct frequency
I2C I2S IC IF Interlaced Integrated IC bus Integrated IC Sound bus Integrated Circuit Intermediate Frequency 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. IR Infra Red IRQ Interrupt ReQuest Last Status The settings last chosen by the customer and read and stored in RAM or in the NVM. They are called at start-up of the set to configure it according the customers wishes.
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. Cause: Low sensitivity to 4.5mHz carrier. Cure: Upgrade software.
MM081909
