IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** Equipment. The service procedures recommended by Philips and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose.
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FIRE AND SHOCK HAZARD 1. Be sure all components are positioned in such a way as to avoid the possibility of adjacent component shorts. This is especially important on those chassis which are transported to and from the service shop. 2.
LEAKAGE CURRENT COLD CHECK 1. Unplug the ac line cord and connect a jumper between the two prongs of the plug. 2. Turn on the power switch. 3. Measure the resistance value between the jumpered ac plug and all exposed cabinet parts of the receiver, such as screw heads, antennas, and control shafts.
TV SAFETY NOTES SAFETY CHECKS After the original service problem has been corrected, a complete safety check should be made. Be sure to check over the entire set, not just the areas where you have worked. Some previous servicer may have left an unsafe condition, which could be unknowingly passed on to your customer.
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The use of a substitute part which does not have the same safety characteristics as the Philips recommended replacement part shown in this service manual may create shock, fire, or other hazards.
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PREVENTION OF ELECTROSTATIC DISCHARGE (ESD) Some semiconductor solid state devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices, Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).
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PRACTICAL SERVICE PRECAUTIONS IT MAKES SENSE TO AVOID EXPOSURE TO ELECTRICAL SHOCK. While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard. ALWAYS RESPECT VOLTAGES. While some may not be dangerous in themselves, they can cause unexpected reactions –...
Technical Specifications, Connections And Chassis Overview Technical Specifications Reception Feature Data Tuning system : PLL Color systems : NTSC M : (3.58 - 4.5 MHz) Sound systems : FM-mono M : (4.5 MHz) : BTSC DBX : (4.5 MHz) A/V connections : NTSC M : (3.58 - 4.5 MHz) Channel selections...
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AC frequency : 60 Hz (± 5 %) Ambient temperature : + 5 to + 45 deg. C Maximum humidity : 90 % Power consumption : 36 W (14”) : 100 W (32”) Standby Power consumption : < 3 W Connections Front Or Top Control, Front Or Side Connections Audio / Video In...
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Audio L (0.2 Vrms / 10 kO) Audio R (0.2 Vrms / 10 kO) Headphone (3.5 8 - 600 O / 4 mW Rear Connections Monitor Out Connector Kind Value Symbol Video 1 Vpp / 75 O Audio L (0.5 Vrms / 1 kO) Audio R (0.5 Vrms / 1 kO)
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YUV In Connector Kind Value Symbol 0.7 Vpp / 75 O 0.7 Vpp / 75 O 0.7 Vpp / 75 O AV1 In Connector Kind Value Symbol Video 1 Vpp / 75 O Audio L (0.5 Vrms / 10 kO) Audio R (0.5 Vrms / 10 kO) AV2 In...
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AV2 In (SVHS) Connector Kind Value Symbol 1 Vpp / 75 O 0.3 Vpp / 75 O...
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Mechanical Instructions Rear Cover Removal 1. Remove all fixation screws of the rear cover. 2. Now pull the rear cover backward to remove it. Service Position Main Panel There are 2 configurations. With and without panel bracket. Both have a different service position: Main panel without bracket.
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Main panel with bracket. 1. Disconnect the strain relief of the AC power cord. 2. Disconnect the degaussing coil by removing the cable from (red) connector 0201 [1]. 3. Remove the panel bracket from the bottom tray, by pulling it backward [2] and turn the chassis tray 90 degrees counter clockwise.
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Side I/O Panel Removal 1. Remove the complete Side I/O assembly after unscrewing the 2 fixation screws. 2. Release the 2 fixation clamps and lift the board out of the bracket. Figure: Pip Module (If Present) Service Position 1. Remove the module bracket from the bottom tray by pulling it backward. 2.
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Figure: Panel Removal 1. Lift the board out of its bracket after releasing the 2 fixation clamps. Figure:...
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Rear Cover Mounting Before you mount the rear cover, perform the following checks: 1. Check whether the AC power cord is mounted correctly in its guiding brackets. 2. Replace the strain relief of the AC power cord into the cabinet. 3.
Service Modes, Error Codes and Fault Finding Index: 1. Test points. 2. Service Modes. 3. Problems and Solving Tips (related to CSM). 4. ComPair. 5. Error Codes. 6. The Blinking LED Procedure. 7. Protections. 8. Repair Tips. Supporting Overviews I2C-IC overview Test points overview Main Panel Test points overview CRT Panel Test Points...
Table: Test Point Overview Test point Circuit Diagram A1-A2-A3-.. Audio processing A8, A9 / A11 C1-C2-C3-.. Control F1-F2-F3-.. Frame drive and output I1-I2-I3-.. Tuner & IF L1-L2-L3-. Line drive and output P1-P2-P3-.. Power supply S1-S2-S3-.. Synchronization V1-V2-V3-.. Video processing A5, B1 The numbering is in a logical sequence for diagnostics.
Special SW Cluster UOC type name Diversity Features Mono 2US9 L01UM9x.y TDA9577(SS) (Magnavox) Size Stereo non- TDA9577 3US2 L01UN2x.y (SS) (LS) Size (Magnavox) Stereo non- TDA9588 1US5 L01US5x.y (LS) (Magnavox), Size Non PIP TDA9577 Mono 2US2 L01UM2x.y (LS) (Philips) Size...
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Software Special SW Cluster UOC type name Diversity Features Stereo non- TDA9577 3US3 L01UN3x.y (SS) (LS) (Philips), Size TDA9587 Stereo non- (SS), 1US4 L01US4x.y TDA9588 (Philips), Size (LS) Abbreviations in Software name: U = USA (NAFTA), M = Mono, N =...
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Specifications Tuning frequency: 61.25 MHz (channel 3) Color system: NTSC M All picture settings at 50% (brightness, color contrast, hue) Bass, treble and balance at 50%; volume at 25%. All service-unfriendly modes (if present) are disabled. The service unfriendly modes are: (sleep) timer §...
Short jumper wires 9631 and 9641 on the monocarrier (see Fig. 8-1) and apply AC power. Then press the power button (remove the short after start-up). Caution: Entering SDAM by shorting wires 9631 and 9641 will override the +8V- protection.Do this only for a short period. When doing this, the service-technician must know exactly what he is doing, as it could damage the television set.
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C = the feature of software diversity: N = stereo non-dBx, S = stereo dBx, § M = mono, D = DVD D = the language cluster number: § X = the main software version number § Y = the sub software version number §...
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How to navigate in SDAM In SDAM, select menu items with the MENU UP/DOWN keys on the remote control transmitter. The selected item will be highlighted. When not all menu items fit on the screen, use the MENU UP/DOWN keys to display the next / previous menu items.
Customer Service Mode (CSM) Purpose The Customer Service Mode shows error codes and information on the TV operation settings. The servicer can instruct the customer to enter CSM by telephone and read off the information displayed. This helps the servicer to diagnose problems and failures in the TV set before making a service call.
5. Indicates the type of TV system or whether or not the television is receiving an "IDENT" signal on the selected source. If no "IDENT" signal is detected, the display will read "NOT TUNED" 6. Error code buffer. Displays the last five errors detected in the error code buffer. How to exit CSM To exit CSM, use one of the following methods: Press the MENU, STATUS/EXIT, or POWER button on the remote control...
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Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary).
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3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select SHARPNESS. 6.
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Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary).
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8. The new PERSONAL preference value is automatically stored. ComPair Introduction ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development of the DST (special remote control transmitter for Service), which allows faster and more accurate diagnostics. ComPair...
Specifications ComPair consists of a Windows based faultfinding program and an interface box between PC and the product. The ComPair interface box is connected to the PC via a serial or RS232 cable. In the case of the L01 chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector (Connector 0267).
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If both ComPair and the Force electronic service manual are installed, all the schematics and CBAs of the television set are available by clicking on the appropriate hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Monocarrier. Click on the "Panel" hyperlink to automatically show the CBA with a highlighted capacitor C2568.Click on the "Schematic"...
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Figure: ComPair Connection How To Order ComPair order codes: ComPair Interface Box 4822 727 21631 CDR Interface board 3122 785 90200 TV cable 3122 785 90004 DVD cable 3122 785 90017 BETA CALIBRATION DISK 7104 099 93132 Extra Com Cable S83-940 AC Adapter T405-ND Error Buffer The error code buffer contains all errors detected since the last time the buffer was...
How To Read The Error Buffer You can read the error buffer in 3 ways: On screen via the SDAM (if you have a picture). Examples: ERROR: 0 00 0 0 : No errors detected § ERROR: 6 0 0 0 0 : Error code 6 is the last and only detected error §...
Error Codes In case of non-intermittent faults, write down the errors present in the error buffer and clear the error buffer before you begin the repair. This ensures that old error codes are no longer present. If possible, check the entire contents of the error buffer. In some situations an error code is only the result of another error and not the actual cause of the problem (for example, a fault in the protection detection circuitry can also lead to a protection).
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Error Check ERROR Device Diagram description item 7200, General I2C I2C bus 3624, bus error 3625 Not applicable 7400, Protection 3405, Not applicable (Large 3406, Screen) 3400 7602, NVM I2C 3611, M24C08 identification 3603, error 3604 Tuner I2C 1000, Tuner identification A2, A4 7482...
The Blinking LED Procedure Using this procedure, you can make the contents of the error buffer visible via the front LED. This is especially useful when there is no picture. When the SDAM is entered, the LED will blink the contents of the error-buffer: 1-12 short blinks (indicates error number 1-12) when all the error-codes are displayed, the sequence finishes with an "ON"...
Protections If a fault situation is detected, an error code will be generated; and, if necessary, the television set will go in to protection mode. Blinking of the red LED at a frequency of 3 Hz indicates the protection mode. In some error cases, the microprocessor does not put the set in protection mode.
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Set is dead, and makes no sound Check power supply IC 7520. Result: voltage at pins 1,3, 4, 5 and 6 are about 180 V and pin 8 is 0 V. The reason why the voltage on these pins is so high is because the output driver (pin6) has an open load.
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Alignments Index of this chapter: 1. General Alignment Conditions 2. Commercial Models SDAM Entry 3. Hardware Alignments 4. Software Alignments and Settings Note: The Service Default Alignment Mode (SDAM) is described in the "Service Modes, Error Codes and Fault Finding" section. SDAM menu navigation is performed by using the MENU UP, MENU DOWN, MENU LEFT, and MENU RIGHT keys of the remote control transmitter.
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Status Item Status Data Meaning SYSTEM STATUS (L011TV-US4PV) Information title MODE COMMERCIAL/CONSUMER Operational mode CHANNEL CHANNEL, INPUT Currently tuned channel/input OFF/ON Data Comm. Module online/offline CODES 209 222 1 33 Internal data for factory/service use SIGNAL TUNED/NOT TUNED Valid signal present/absent OP HRS 0031h Number of hours set has operated (hex)
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SWITCH ON CHANNEL CH. 1-125 / FRONT / AUX / S-VIDEO / CVI / STANDARD POWER ON STANDARD / FORCED CHANNEL DISPLAY NUMBER / LABEL / ALL / NONE KEYBOARD LOCK ON / OFF 1 – 99 / OFF AUDIO / VIDEO MUTE OFF / BLACK / BLUE EXT AUD / VID OUT ON / OFF...
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Vg2 Adjustment 1. Enter SDAM: 2. Press the following key sequence on the remote control transmitter: 0-6-2-5-9-6-MENU Do not allow the display to time out between entries while keying the sequence. 3. Use the MENU UP/DOWN keys to highlight the WHITE TONE sub menu. 4.
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26. Use the MENU UP/DOWN keys to select PICTURE. 27. Use the MENU LEFT/RIGHT keys to reset the value of PICTURE to the original value. 28. Use the MENU UP/DOWN keys to select BRIGHTNESS. 29. Use the MENU LEFT/RIGHT keys to reset the value of BRIGHTNESS to the original value.
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Software Alignments and Settings The following options are performed in the Service Default Alignment Mode (SDAM). SDAM is described in the "Service Modes, Error Codes and Fault Finding" section. The following alignments are explained: 1. OPTIONS 2. TUNER 3. WHITE TONE 4.
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5. Use the number keys on the remote control transmitter to enter a new value for the selected option byte. The value must be entered as a three-digit value (for example, "4" would be entered as "0-0-4"). 6. The selected value must be between 0 and 255. 7.
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MS3250 C321 MS3650 C329 PA0113 C321 PA0132 C321 PC0119 C322 PC0125 C321 PC0127 C321 PCW227 C321 PCW227 S321 PL0119 C322 PL0125 C321 PL0127 C321 PLW225 S321 PPC132 C321 PPC132 C331 PPC136 C327 PRF227 S325 SC3127 N321 SC3132 N321 SC3132 N331 * Option Byte Data for these models was not available at manual release.
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IF PLL This adjustment is auto-aligned. Therefore, no action is required. AGC (AGC take over point) 1. Connect the RF output of a video pattern generator to the antenna input. 2. Input a color bar test pattern to the television set. 3.
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4. Use the MENU UP/DOWN keys to select SL. 5. Use the MENU LEFT/RIGHT keys to toggle SL "Off" and "On" 6. Press the MENU button to return to the top level SDAM menu. 7. To ensure the SL setting is saved: Turn the television set OFF by using the POWER button on the remote control transmitter or the local keyboard.
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2. Use the MENU UP/DOWN keys to highlight the WHITE TONE sub menu. 3. Press the MENU LEFT/RIGHT keys to enter the WHITE TONE sub menu. 4. Use the MENU UP/DOWN keys to select NORMAL RED, NORMAL GREEN, or NORMAL BLUE. 5.
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13. To ensure the GEOMETRY settings are saved: Turn the television set OFF by using the POWER button on the remote control transmitter or the local keyboard. Disconnect the television set from AC power for at least ten seconds. Reconnect the television set to AC power.
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Upper Corner Parabola (UCP) Aligns straight vertical lines in the upper corners of the screen. Lower Corner Parabola (LCP) Aligns straight vertical lines in the lower corners of the screen. East West Trapezium (EWT) Align straight vertical lines at the middle of the screen. Figure: Vertical Menu Vertical: Vertical slope (VSL) Aligns the picture so the proportions are the same at the top and...
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The table below lists the default GEOMETRY values for the different television sets. Table: Default Geometry Values Alignment Description 20RFL260/37R 21PT839B/85R 27RFL260/37R 20RFL250/37R 21PT639A/85R BTSC NON- BTSC DBX BTSC DBX BISONIC BISONIC Hor. Parallelogram 31 Hor. Bow Hor. Shift East West Width East West Parabola 33 Upper Corner Parabola...
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AF-M Default value is 300. TV A2 Threshold Default value is 250. To adjust AF-M: 1. Enter SDAM: Press the following key sequence on the remote control transmitter: 0-6-2-5-9-6-MENU Do not allow the display to time out between entries while keying the sequence.
Circuit Description Index of this chapter: 1. Introduction 2. Audio signal processing 3. Video signal processing 4. Synchronization 5. Deflection 6. Power supply 7. Control 8. Abbreviations Note: For complete block diagrams a reference is made to Block diagram. Introduction The S8/T8 chassis is a global TV chassis for the model year 2001 and is used for TV sets with screen sizes from 25”...
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Figure: The functions for video processing, microprocessor (µP) and teletext (TXT) decoder are combined in one IC (TDA958xH), the so-called Ultimate One Chip (UOC). This chip is (surface) mounted on the copper side of the LSP. Figure:...
The S8/T8 is divided into 2 basic systems, i.e., mono and stereo sound. While the audio processing for the mono sound is done in the audio block of the UOC, an external audio processing IC is used for stereo sets. The tuning system features 181 channels with on-screen display.
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There are two stereo decoders used: 1. a BTSC DBX stereo/SAP decoder (MSP34X5 at position 7831) for the highest specified sets and 2. a BTSC non-DBX stereo decoder (TDA 9853 at position 7861) for BTSC Economic. The output is fed to the to the audio amplifier (AN7522at position 7901). The volume level is controlled at this IC (pin9) by a control line (Volume Mute) from the microprocessor.
Video Signal Processing Introduction The video signal-processing path consists of the following parts: RF signal processing. Video source selection. Video demodulation. Luminance / Chrominance signal processing. RGB control. RGB amplifier The processing circuits listed above are all integrated in the UOC TV processor. The surrounding components are for the adaptation of the selected application.
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The demodulated composite video signal is available at pin 38 and then buffered by transistor 7201. Video source selection The Composite Video Blanking Signal (CVBS) from buffer 7201 goes to the audio carrier trap filters (1200, 1201,or 1202 depending on the system used) to remove the audio signal.
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Once the signal source is selected, a chroma filter calibration is performed. The received color burst sub-carrier frequency is used for this. Correspondingly, the chroma band pass filter for PAL/NTSC processing or the cloche filter for SECAM processing is switched on. The selected luminance (Y) signal is supplied to the horizontal and vertical synchronization processing circuit and to the luminance processing circuit.
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Black stretch This function corrects the black level of incoming signals, which have a difference between the black level and the blanking level. The amount of extension depends upon the difference between actual black level and the darkest part of the incoming video signal level. It is detected by means of an internal capacitor.
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RGB control The RGB control circuit enables the picture parameters contrast, brightness and saturation to be adjusted, by using a combination of the user menus and the remote control. Additionally automatic gain control for the RGB signals via cut-off stabilization is achieved in this functional block to obtain an accurate biasing of the picture tube.
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being overdriven, which could otherwise cause serious damage in the line output stage. The reference used for this purpose is the DC voltage on pin 54 (BLCIN) of the TV processor. Contrast and brightness reduction of the RGB output signals is therefore proportional to the voltage present on this pin.
Deflection Horizontal drive The horizontal drive signal is obtained from an internal VCO, which is running at twice the line frequency. This frequency is divided by two, to lock the first control loop to the incoming signal. When the IC is switched ‘on’, the ‘Hdrive’ signal is suppressed until the frequency is correct.
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The ‘filament’ voltage is monitored for ‘no voltage’ or ‘excessive voltage’. This voltage is rectified by diode 6447 and fed to the emitter of transistor 7443. If this voltage goes above 6.8 V, transistor 7443will conduct, making the ‘EHT0’ line ‘high’. This will immediately switch off the horizontal drive (pin 30) via the slow stop procedure.
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voltage across measuring resistor R3471 that provides internal feedback information. The voltage across this measuring resistor is proportional to the output current, which is available at pins4 and 7 where they drive the vertical deflection coil (connector0222) in phase opposition. IC 7471 is supplied by +13 V.
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energy is available for excitation through C2465 and the line deflection. As a consequence the flyback pulse is less distorted. The S-Correction Since the sides of the picture are further away from the point of deflection than from the centre, a linear sawtooth current would result in a non-linear image being scanned (the center would be scanned slower than the sides).
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A line, written at the upper- or lower side of the screen, will be larger at the screen center when a fixed deflection current is used. Therefore the amplitude of the deflection current must be increased when the spot approaches the center of the screen. This is called the East/West or pincushion correction.
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Introduction The supply is a Switching Mode Power Supply (SMPS). The frequency of operation varies with the circuit load. This ‘Quasi-Resonant Flyback’ behavior has some important benefits compared to a ‘hard switching’ fixed frequency Flyback converter. The efficiency can be improved up to90%, which results in lower power consumption. Moreover the supply runs cooler and safety is enhanced.
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Other supply voltages are provided by the LOT. It supplies +50 V (only for large screen sets), +13 V, +8 V, +5V and a +200 V source for the video drive. The secondary voltages of the LOT are monitored by the ‘EHT information’ lines. These lines are fed to the video processor part of the UOC IC 7200on pins 11 and 34.
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Degaussing When the set is switched on, the degaussing relay 1515 is immediately activated as transistor 7580 is conducting. Due to the RC-time of R3580 and C2580, it will last about 3 to 4 seconds before transistor 7580 is switched off. Basic IC Functionality For a clear understanding of the Quasi-Resonant behavior, it is possible to explain it by a simplified circuit diagram (see Figure below).
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In the Quasi-Resonant mode each period can be divided into four different time intervals, in chronological order: Interval 1: t0 < t < t1primary stroke at the beginning of the first interval, the MOSFET is switched ‘on’ and energy is stored in the primary inductance (magnetization).
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output power-, but also input voltage dependent. The higher the input voltage, the smaller t , so the higher the frequency will be. PRIM Figure: Point P1 is the minimum frequency f that occurs at the specified minimum input voltage and maximum output power required by the application. Of course the minimum frequency has to be chosen above the audible limit (>20 kHz).
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Once the V capacitor is charged to the start-up voltage V (11V), the IC starts CC-start driving the MOSFET. Both internal current sources are switched ‘off’ after reaching this start-up voltage. Resistor R (3524) will discharge the ‘soft start’ capacitor, such that the peak current will slowly increase.
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Operation The supply can run in three different modes depending on the output power: Quasi-Resonant mode (QR) The QR mode, described above, is used during normal operation. This will give a high efficiency. Frequency Reduction mode (FR) The FR mode (also called VCO mode) is implemented to decrease the switching losses at low output loads.
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Safe-Restart Mode This mode is introduced to prevent the components from being destroyed during eventual system fault conditions. It is also used for the Burst mode. The Safe-Restart mode will be entered if it is triggered by one of the following functions: Over voltage protection, Short winding protection, Maximum ‘on time’...
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In the active period the energy is transferred to the secondary and stored in the buffer capacitor C in front of the linear stabilizer (see Figure below). During the inactive STAB period, the load (e.g. microprocessor) discharges this capacitor. In this mode, the controller makes use of the Safe-Restart mode.
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For a more detailed description of one burst cycle, three time intervals are defined: t1: Discharge of V when gate drive is active During the first interval, energy is transferred, which result in a ramp-up of the output voltage (V ) in front of the STAB stabilizer.
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Protection Events The SMPS IC 7520 has the following protection features: Demagnetization sense This feature guarantees discontinuous conduction mode operation in every situation. The oscillator will not start a new primary stroke until the secondary stroke has ended. This is to ensure that FET 7521 will not turn on until the demagnetization of transformer 5520 is complete.
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Over Voltage Protection The Over Voltage Protection ensures that the output voltage will remain below an adjustable level. This works by sensing the auxiliary voltage via the current flowing into pin4 (DEM) during the secondary stroke. This voltage is a well-defined replica of the output voltage.
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short circuit is removed (safe restart mode). The short winding protection will also protect in case of a secondary diode short circuit. This protection circuit is activated after the leading edge blanking time (LEB). LEB time The LEB (Leading Edge Blanking) time is an internally fixed delay, preventing false triggering of the comparator due to current spikes.
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Control Figure: Introduction The microprocessor part of the UOC has the complete control and teletext on board. User menu, Service Default Mode, Service Alignment Mode and Customer Service Mode are generated by the µP. Communication to other ICs is done via the I C-bus.
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User Interface The S8/T8 uses a remote control withRC5 protocol. The incoming signal is connected to pin 67 of the UOC. The "Top Control" keyboard, connected to UOC pin 80, can also control the set. Button recognition is done via a voltage divider. The front LED (6691) is connected to an output control line of the microprocessor (pin 5).
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Power Supply Control The microprocessor part is supplied with 3.3V and 3.9 V both derived from the ‘MainAux’ voltage via a 3V3 stabilizer (7560) and a diode. Two signals are used to control the power supply: Stdby_con This signal is generated by the microprocessor when over-current takes place at the ‘MainAux’...
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will trigger the power supply to shut down. However, this is a high beam-current situation, the TV screen will be bright white before the set is shut down. E/W protection, two protection mechanisms are built in, over-current and over- voltage. In case of over-current due to defective parts in the line deflection output §...
Abbreviation list Abbreviation Description 2 Carrier (or Channel) Stereo Automatic Channel Installation: algorithm that installs TV sets directly from cable network by means of a predefined TXT page Analogue to Digital Converter Automatic Frequency Control: control signal used to tune to the correct frequency Automatic Fine Tuning Automatic Gain Control: algorithm that controls the video input of the feature box...
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BLC-INFORMATION Black current information BTSC Broadcast Television Standard Committee. Multiplex FM stereo sound system, originating from the USA and used e.g. in LATAM and AP-NTSC countries B-TXT Blue teletext Closed Caption ComPair Computer aided repair Cathode Ray Tube or picture tube Customer Service Mode Color Transient Improvement: manipulates steepness of chroma transients...
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Dealer Service Tool: special remote control designed for dealers to enter e.g. service mode Digital Versatile Disc EEPROM Electrically Erasable and Programmable Read Only Memory Extra High Tension EHT- Extra High Tension information INFORMATION Europe East West, related to horizontal deflection of the set External (source), entering the set via SCART or Cinch Fast Blanking: DC signal accompanying RGB signals FILAMENT...
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Integrated IC bus Intermediate Frequency Integrated IC bus 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. Institutional TV LATAM Latin America...
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NTSC National Television Standard Committee. Color system mainly used in North America and Japan. Color carrier NTSC M/N = 3.579545 MHz, NTSC 4.43 = 4.433619 MHz (this is a VCR norm, it is not transmitted off-air) Non Volatile Memory: IC containing TV related data, e.g. alignments Option Byte Open Circuit On Screen Display...
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Red Green Blue Read Only Memory Service Alignment Mode Second Audio Program Sandcastle: pulse derived from sync signals Short Circuit SCAVEM Scan Velocity Modulation Serial Clock Serial Data Service Default Mode SECAM SEequence Couleur Avec Memoire. Color system mainly used in France and East Europe.
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Ultimate One Chip Vertical Acquisition VBAT Main supply voltage for the deflection stage (mostly141 V) V-chip Violence Chip Video Cassette Recorder WYSIWYR What You See Is What You Record: record selection that follows main picture and sound XTAL Quartz crystal Luminance (Y) and Chrominance (C) signal...
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All Models (7629) - PIP Interface (Diagram A16)
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All Models (7629) - CRT Panel (Diagram B1)
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USED ONLY IN MODELS: 25PS50S321, 26LL500131, 26LW502231, 27HT3000, 27PS55S321, 27PS60S321, 27RF72S325, 29LW602231, PLW225S321, 27RF50S325, 29PV702235 (7629) - Side AV and Headphone Panel (Diagram C) PRF227S325...
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USED ONLY IN MODELS: 27PS50B321, 32PS55S321, 32PS61S321, , 32PS55S331 (7629) - Side AV and Headphone Panel (Diagram E1)
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USED ONLY IN MODELS: 27PS60S321, 27RF72S325, 32PS61S321, (7629) - PIP Panel (Diagram P)
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USED ONLY IN MODELS: 21PT839B85, 20RF50S325, 27RF50S325, 27RF72S325, 29PV702235, 32PS55S321, PRF227S325, 32PS55S331 (7629) - Top Control Panel (Diagram T)
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USED ONLY IN MODELS: PC0125C321, PC0127C321 (7629) - EPS Panel Schematic...
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USED ONLY IN MODELS: PC0125C321, PC0127C321 (7629) - Card Interface Schematic...
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USED ONLY IN MODELS: PC0125C321, PC0127C321, PL0125C321, PLW225S321, PRF227S325 (7629) - SP/LS Panel Schematic...
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All Models (7629) - Main Panel (component side)
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All Models (7629) - Main Panel (copper side)
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All Models (7629) - CRT Panel (component side)
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All Models (7629) - CRT Panel (copper side)
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All Models (7629) - Headphone Panel (component side)
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All Models (7629) - Side AV Panel (component side)
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All Models (7629) - PIP panel (component side)
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All Models (7629) - PIP panel (copper side)
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All Models (7629) - Top Control Panel (component side)
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20RF50S325 (continued) 9997 Wire Jumper, 0.58MM..3198 036 90010 9998 Wire Jumper, 0.58MM..3198 036 90010 Main Chassis Assembly..3139 177 21191 CRT Panel Parts (Part of Main Chassis) CRT Panel Parts (Part of Main Chassis...
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21PT839B85 (continued) 9998 Wire Jumper, 0.58MM..3198 036 90010 Main Chassis Assembly..3139 177 21291 CRT Panel Parts (Part of Main Chassis) CRT Panel Parts (Part of Main Chassis 0244 Connector, 5 Pin .