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.
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.
5. When troubleshooting and making test measurements in a receiver with a problem of excessive high voltage, reduce the line voltage by means of a Variac to bring the HV into acceptable limits while troubleshooting. Do not operate the chassis longer than necessary to locate the cause of the excessive 6.
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 and Connections Note: Described specifications are valid for the whole product range. Technical Specifications Reception Feature Data Tuning system : PLL Color systems : NTSC M/N Sound systems : BTSC non-DBX : BTSC DBX Channel selections : 181, full cable IF picture carrier : 45.75 MHz Aerial input...
Miscellaneous Audio output: Feature Data Stereo versions : 2 x 1 W : 2 x 3 W : 2 x 5 W : 2 x 10 W Mono versions : 1 x 1 W : 1 x 3 W : 1 x 4 W : 2 x 2 W Power supply: Feature...
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Ambient conditions: Feature Data Temperature range : +5 to +45 deg. C Maximum humidity : 90 % R.H. Power consumption: Feature Data Normal operation : from 81 W (20”) : to 145 W (32”) Standby : < 3 W...
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Connections Front or Top Control / Front or Side Connections Figure: Front/Top control and Side I/O...
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Audio / Video In Connector Kind Value Symbol Video 1 Vpp / 75 Ohm Audio - L 0.2 Vrms / 10 kOhm Audio - R 0.2 Vrms / 10 kOhm Headphone (3.5 8 - 600 Ohm / 4 mW Rear Connections Figure: Rear connections Monitor Out Connector Kind...
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YUV In Connector Kind Value Symbol 0.7 Vpp / 75 Ohm 0.7 Vpp / 75 Ohm 0.7 Vpp / 75 Ohm AV1 In Connector Kind Value Symbol Video (CVBS) 1 Vpp / 75 Ohm Audio - L 0.5 Vrms / 10 kOhm Audio - R 0.5 Vrms / 10 kOhm AV2 In...
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AV2 In (SVHS) Connector Kind Value Symbol Ground Ground 1 Vpp / 75 Ohm 0.3 Vpp / 75 Ohm...
Mechanical Instructions Index of this chapter: 1. Set Disassembly 2. Service Positions 3. Assembly/Board Removal 4. Set Re-assembly Note: Figures below may deviate slightly from the actual product, due to different set designs. Set Disassembly 1. Remove all screws from the back cover (do not forget the screws that hold the rear connection panel).
Service Positions There are 2 service positions possible. Family Board without bracket (with integrated 'control'). 1. Disconnect the strain relief of the AC power cord. 2. Remove the mono carrier, by pushing the two center clips outward [1]. At the same time pull the panel away from the CRT [2].
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Family Board with bracket (with separate 'control'). 1. Disconnect the strain relief of the AC power cord. 2. Disconnect the degaussing coil by removing the cable from (red) connector 0212 [1]. 3. Remove the panel bracket from the bottom tray, by pulling it backward [2]. 4.
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Assembly/Board Removal Comb Filter Assembly/Board (if present) You can remove the Comb Filter panel from the family board by disconnecting it from connector 1810 (located at the top of the AC power transformer 5520). Top Control Assembly/Board (if present) Figure: Top control removal 1.
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Front Interface Assembly/Board (if present) Figure: Front interface removal 1. You can remove the complete module from the bottom plate, by pulling the two clamps upward [1[ while sliding the module away from the CRT [2]. 2. Release the 2 clamps [3] at the side of the bracket, and lift the board out of the bracket (it hinges at one side).
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DAF Assembly/Board (if present) Figure: DAF panel removal 1. You can remove the complete module from the family board bracket, by pressing the clamp downward [1] while sliding the module toward the CRT [2]. 2. Release the 2 clamps [3] to lift the board out of the bracket [4].
Side Jack Panel Assembly/Board (if present) Figure: Side jack panel removal 1. You can remove the complete side jack panel assembly by removing the 2 screws. 2. Release the 2 clamps to lift the board out of the bracket. Set Re-assembly Before replacing the back cover, check the following: 1.
Service Modes, Error Codes and Fault Finding Index: 1. Supporting Overviews 2. Test Points. 3. Service Modes. 4. Problems and Solving Tips (related to CSM). 5. ComPair. 6. Error Codes. 7. The Blinking LED Procedure. 8. Protections. 9. Repair Tips. Supporting Overviews Block Diagram I2C and Supply Voltage Diagram...
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.
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The L01.1U AC chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the abilities of structured troubleshooting, error code reading, and software version readout for all L01.1U AC chassis. Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD- ROM drive (see also “ComPair”...
Service Default Alignment Mode (SDAM) Purpose To create a predefined setting for measurements to be made. To override software protections. To start the blinking LED procedure. To change option settings. To display / clear the error code buffer. To perform alignments. Specifications Tuning frequency: 61.25 MHz (channel 3).
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Software version Option settings Error buffer reading and erasing Software alignments How to enter To enter SDAM, use one of the following methods: Press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the 'MENU' button (do not allow the display to time out between entries while keying the sequence).
Menu explanation 1. LLLL. This represents the run timer. The run timer counts normal operation hours, but does not count standby hours (maximum four digits displayed). 2. AAABCD-X.Y. This is the software identification of the main microprocessor: A = the project name (L01). §...
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10. White Tone. Used to align the white tone. See 'White Tone' in the Alignments section for a detailed description. 11. Geometry. Used to align the geometry settings of the television. See 'Geometry' in the Alignments section for a detailed description. 12.
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How to store SDAM settings To store settings changed in SDAM leave the top level SDAM menu by using the POWER button on the remote control transmitter or the television set. How to exit Switch the set to STANDBY by pressing the POWER button on the remote control transmitter or the television set.
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Upon entering the Customer Service Mode, the following screen will appear: Figure: CSM menu Menu explanation 1. Indication of the service mode (CSM = Customer Service Mode). 2. Reserved item. 3. Software identification of the main microprocessor (see 'Service Default Alignment Mode' for an explanation) 4.
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iTV/Commercial Model Service Modes Unlike mainstream L01.1U AC models, commercial L01.1U AC models do not use the Service Default Alignment Mode. Commercial Models use the Service Default Mode (SDM) and Service Alignment Mode (SAM). Service Alignment Mode (SAM) and Service Default Mode (SDM) offer several features for the service technician.
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to the TV SETUP position. Then press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the 'RECALL' button (do not allow the display to time out between entries while keying the sequence). After entering SAM, a special menu screen is visible, with SAM in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.
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How to store SAM settings To store settings changed in SAM leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. How to exit SAM Switch the set to STANDBY by pressing the POWER button on the remote control transmitter or the television set.
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All service-unfriendly modes (if present) are disabled. The service unfriendly modes are: Timer / Sleep timer. § Child / parental lock. § Blue mute. § Auto shut off (when no 'IDENT' video signal is received for 15 minutes). § Skipping of non-favorite presets / channels. §...
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SDM mode allows the servicer to perform all of the alignments, except software alignments, which are performed in the SDAM mode in mainstream models. In commercial models, software alignments are performed in SAM mode. How to navigate In SDM, select menu items with the MENU UP/DOWN keys on the remote control transmitter.
How to exit Switch the set to STANDBY by pressing the POWER button on the remote control transmitter or the television set. If you turn the television set off by removing the AC power (i.e., unplugging the television) without using the POWER button, the television set will remain in SDM when AC power is reapplied, and the error buffer is not cleared.
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4. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 5. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 6. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 7.
17. Use the MENU UP/DOWN keys to select SHARPNESS. 18. Press the MENU LEFT key to decrease the SHARPNESS value. 19. Press the MENU button on the remote control transmitter twice to exit the user menu. 20. The new PERSONAL preference value is automatically stored. Snowy picture To enter CSM, press the following key sequence on the remote control transmitter: '123654' (do not allow the display to time out between entries while...
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Then: 25. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 26. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 27. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary).
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37. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 38. Use the MENU UP/DOWN keys to select PICTURE. 39. Press the MENU LEFT key to decrease the PICTURE value. 40. Press the MENU button on the remote control transmitter twice to exit the user menu.
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 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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Beside fault finding, ComPair provides some additional features like: Uploading or downloading of presets. Management of preset lists. 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.
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57. Plug the AC power adapter in the AC power outlet and switch the ComPair interface ‘on’. The green and red LEDs light up together. The red LED turns off after approximately 1 second, while the green LED remains lit. 58.
Error Codes The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right.
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Make sure the menu item CLEAR is highlighted. Use the MENU § UP/DOWN buttons, if necessary. Press the MENU RIGHT button to clear the error buffer. The text on § the right side of the 'CLEAR' line will change from 'CLEAR?' to 'CLEARED' If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.
Error Error Device Check item Diagram description NVM I 2 C 7602, M24C08 identification 3611, error 3603, 3604 Tuner I 2 C Tuner identification 1000, 7482 A2, A4 error Black current 7330, RGB TDA6107/8 B1, B2 loop protection amps, CRT MAP I 2 C M65669 identification...
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Example of error buffer: 12 9 6 0 0 After entering SDAM, the following occurs: 1 long 'on' blink of 5 seconds to start the sequence, 12 short blinks followed by a pause of 1.5 seconds, 9 short blinks followed by a pause of 1.5 seconds, 6 short blinks followed by a pause of 1.5 seconds, 1 long 'on' blink of 1.5 seconds to finish the sequence, The sequence starts again at 12 short blinks.
Repair Tips Below some failure symptoms are given, followed by a repair tip. Set is dead and makes hiccupping sound. 'Main Power Supply' is available. Hiccupping stops when L5561 is de-soldered, meaning that problem is in the 'Main Power Supply' line. No output voltages at LOT, no horizontal deflection.
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Set turns on, but with a half screen at the bottom. Sound is okay. Blinking LED (set is in SDAM mode) indicates error 3. Check 'Vlotaux+11V' and '+50V'. If they are okay, problem is expected in the vertical amplifier IC 7471.
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Alignments Index of this chapter: 1. General Alignment Conditions 2. Hardware Alignments 3. 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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Hardware Alignments Figure: Family board (top view) Vg2 Adjustment 1. To enter SDAM, press the following key sequence on the remote control transmitter: 0 6 2 5 9 6 directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence). 2.
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5. Use the MENU LEFT/RIGHT keys to set the values of NORMAL RED, NORMAL GREEN and NORMAL BLUE to '40'. 6. Press the MENU button twice to enter the normal user menu. 7. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary).
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23. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 24. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 25. Use the MENU UP/DOWN keys to select PICTURE. 26.
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Table: Vg2 cut-off point (Large Screen) Screen Size (RF= Real Flat) Cut-off point (V) 20RF Matsushita 20RF Samsung 20RF LG Philips +145 V +/- 4 V 25V Curved Face 27V Curved Face 27RF +155 V +/- 4 V 29RF LG Philips 20RF Philips 27RF Samsung +160 V +/- 4 V...
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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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2. Use the MENU UP/DOWN keys to highlight the OPTIONS sub menu. 3. Press the MENU LEFT or MENU RIGHT key to enter the OPTIONS sub menu. 4. In the OPTIONS sub menu, press the MENU UP/DOWN keys to select 'OP 1' through 'OP 7'.
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Note: Each option byte controls several features of the television set; therefore, before changing option byte information, it is important to record the current option byte values. This ensures that the television features can be restored to the original settings, if necessary.
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Model Number OP1 OP2 OP3 OP4 OP5 OP6 OP7 32PT541S37G 32PT543S/37A 32PT543S/37G 32PT553S/37A 32PT553S/37G 32PT563S37A 32PT563S37G 32PT633R/37D 32PT663R/37A MS3252S431 MS3652S427 Table: Option code settings for iTV/Commercial models Model Number 25LT220L/17 25LT421L/17 25ST220L/17 27LT220L/17 27LT621L/17 27ST110P/35 27ST220L/17 27ST230P/35 27ST240P/35 27ST420L/17...
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Model Number 27ST421L/17 32LT621L/17 32ST220P/17 32ST230P/35 36ST220P/35 36ST230P/35 Tuner Note: Described alignments are only necessary when the NVM (part reference number 7602) is replaced. 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.
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6. Use the MENU UP/DOWN keys to highlight the TUNER sub menu. 7. Press the MENU LEFT/RIGHT keys to enter the TUNER sub menu. 8. Use the MENU UP/DOWN keys to select AGC. 9. Use the MENU LEFT/RIGHT keys to adjust the AGC value (default value is 27) until the DC-voltage at pin 1 of the tuner lies between 3.8 V and 2.3 V.
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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 §...
Default settings: NORMAL (color temperature = 9600 K): NORMAL RED = 40 § NORMAL GREEN = 40 § NORMAL BLUE = 40 § To adjust NORMAL RED, NORMAL GREEN, and NORMAL BLUE: 1. To enter SDAM, press the following key sequence on the remote control transmitter: 0 6 2 5 9 6 directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence).
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Geometry The geometry alignments menu contains several items for correct picture geometry alignment. 1. Connect the RF output of a video pattern generator to the antenna input. 2. Input a crosshatch test pattern to the television set. 3. Set the amplitude of the video pattern generator to at least 1 mV and set the frequency to 61.25 MHz (channel 3).
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Disconnect the television set from AC power for at least ten seconds. § Reconnect the television set to AC power. § Turn the television set 'on' by using the 'POWER' button on the remote § control transmitter or the local keyboard. Figure: Geometry alignments...
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The following alignments can be performed in the GEOMETRY sub menu: Horizontal Amplitude and Phase: Figure: Horizontal alignment menu Horizontal Shift (HSH). Select Horizontal Shift to center the picture on the screen. Horizontal Parallelogram (HP). Set Horizontal Parallelogram to prevent the picture from slanting to one side.
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Vertical Amplitude and Position: Figure: Vertical alignment menu Vertical Amplitude (VAM). Aligns the height of the picture (other vertical alignments are NOT compensated). Vertical slope (VSL). Aligns the picture so the proportions are the same at the top and bottom of the screen. This alignment must be performed first, before all other vertical alignments.
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Methods of adjustment 1. Select Service Blanking (SBL) and set it to 1. The lower half of the picture will be blanked. 2. Press the MENU UP/DOWN buttons to select Vertical Slope (VSL). 3. Align VSL to start the blanking exactly at the horizontal white line at the center of the test circle (align the bottom of the screen so that castellations just disappear).
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Audio Figure: Audio alignment menu No alignments are necessary for the AUDIO sub menu. Use the default values. AF-M (NICAM threshold) Default value is 300. To adjust AF-M: 1. To enter SDAM, press the following key sequence on the remote control transmitter: 0 6 2 5 9 6 directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence).
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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. §...
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 9. IC Data Sheets Notes: For a good understanding of the following circuit descriptions, please use the Block diagram .
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Introduction The 'L01.1U AC' chassis is a global TV chassis for the model year 2003 and is used for TV sets with screen sizes from 20" - 32" (large screen), in Super Flat, Real Flat, and Wide Screen executions. In comparison to its predecessor (the 'L01.1U AB'), the chassis has enhanced features like a 2D 3-line Comb-filter and 'Active Control'.
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Figure: Mono Carrier solder side The 'L01.1U AC' 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.
Audio Signal Processing Stereo In stereo sets, the signal goes via the SAW filter (position 1002/1003), to the audio demodulator part of the UOC IC 7200. The audio output on pin 33 goes to the stereo decoder 7831/ 7861. The switch inside this IC selects either the internal decoder or an external source.
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Stereo audio signal processing Mono In mono sets, the signal goes via the SAW filter (position 1002/1003), to the audio demodulator part of the UOC IC 7200. The audio output on pin 48 goes to the audio amplifier (AN7523 at position 7902). The volume level is controlled at this IC (pin 9) by a 'VolumeMute' control line from the microprocessor.
Mono audio signal processing 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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RF Signal Processing The incoming RF signal goes to the tuner (pos. 1000), where the 45.75 MHz IF signal is developed and amplified. The IF signals then exits the tuner from pin 11 to pass through the SAW filter (pos. 1002/1003). The shaped signal is then applied to the IF processor part of the UOC (pos.
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Figure: Video source selection 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.
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Comb Filter Introduction The video signal prepared for broadcast contains two major parts commingled, the luminance (makes a black and white picture in full detail) and chrominance (coloration with not quite all the detail). This method is used instead of red, green, and blue sub- signals in order to get the best looking picture that can be transmitted in the limited bandwidth of the broadcast channel.
is used in the 'L01.1U AC' chassis. When present, the filter CBA is plugged-in on connector 1810B of the Mono Carrier. Motion adaptive (3D) filter. The difference with the 2D method is that this method uses three fields, so it also uses 'time' dimension. The 3D comb filter can achieve essentially perfect Y/C separation, eliminating all dot crawl and rainbow swirls for 'stationary' subject material, and perform at least as well as the 2D filter for the rest of the picture.
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Video Demodulation The color decoder circuit detects whether the signal is a PAL, NTSC, or SECAM signal. The result is made known to the auto system manager. The PAL/NTSC decoder has an internal clock generator, which is stabilized to the required frequency by using the 12 MHz clock signal from the reference oscillator of the microcontroller / teletext decoder.
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matches the skin tone. The correction is dependent on the luminance, saturation, and distance to the preferred axis. The YUV signal is then fed to the color matrix circuit, which converts it to R, G, and B signals. The OSD/TXT signal from the microprocessor is mixed with the main signal at this point, before being output to the CRT board (pins 56, 57, and 58).
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change in the gain of the output stage will be compensated by a gain change of the RGB control circuit. Pin 55 (BLKIN) of the UOC is used as the feedback input from the CRT base panel. Blue stretch. This function increases the color temperature of the bright scenes (amplitudes which exceed a value of 80% of the nominal amplitude).
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SCAVEM (if present) The SCAn VElocity Modulation (SCAVEM) circuitry is implemented in the layout of the picture tube panel. It is thus not an extra module. This circuit influences the horizontal deflection as a function of the picture content. In an ideal square wave, the sides are limited in slope due to a limited bandwidth (5 MHz).
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After being buffered by 7369, the differentiated signals are coupled through 2375 and 2380 to the output stage. The output stage is configured into cascode stage and push- pull operation. The biasing is done by 3373, 3375, 3376, 3380, 3381, 3383, 3374, and 3384.
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' 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 7443 will 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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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 pins 4 and 7 where they drive the vertical deflection coil (connector 0222) in phase opposition. IC 7471 is supplied by +13 V.
available for excitation through C2465 and the line deflection. Consequently, 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 center, 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.
Power Supply Figure: Switched Mode Power Supply standard circuit...
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Figure: Internal block diagram of the driver IC (TEA1507) 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 to 90%, which results in lower power consumption.
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The 'MainSupply' line is the reference voltage for the power supply. It is sampled by resistors 3543 and 3544 and fed to the input of the regulator 7540 / 6540. This regulator drives the feedback optocoupler 7515 to set the feedback control voltage on pin 3 of 7520.
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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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Figure: QR-mode time intervals In the Quasi-Resonant mode each period can be divided into four different time intervals, in chronological order: Interval 1: t0 < t < t1 primary stroke. At the beginning of the first interval, the MOSFET is switched 'on' and energy is stored in the primary inductance (magnetization).
de diode that will be omitted from the equations from now on. The current will change its positive derivative, corresponding to V , to a negative derivative, corresponding to -n•V /LP. Interval 3: t2 < t < t3 secondary stroke. In the third interval, the stored energy is transferred to the output, so the diode starts to conduct and the inductive current will decrease.
Figure: QR frequency behavior 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). Start-Up Sequence When the rectified AC voltage V (via the center tap connected to pin 8) reaches the...
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start-up voltage. Resistor R (3524) will discharge the 'soft start' capacitor, such that the peak current will slowly increase. This to prevent 'transformer rattle'. During start-up, the V capacitor will be discharged until the moment that the primary auxiliary winding takes over this voltage. Figure: Start-up behavior...
The moment that the voltage on pin 1 drops below the 'under voltage lock out' level (UVLO = ± 9 V), the IC will stop switching and will enter a safe restart from the rectified mains voltage. Operation The supply can run in three different modes depending on the output power: Quasi-Resonant mode (QR).
Figure: Different supply modes 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' protection,...
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Standby The set goes to Standby in the following cases: After pressing the 'standby' key on the remote control. When the set is in protection mode. In Standby, the power supply works in 'burst mode'. Burst mode can be used to reduce the power consumption below 1 W at stand-by.
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The system enters burst mode standby when the microprocessor activates the 'Stdby_con' line. When this line is pulled high, the base of Q7541 is allowed to go high. This is triggered by the current from collector Q7542. When Q7541 turns 'on', the opto- coupler (7515) is activated, sending a large current signal to pin 3 (Ctrl).
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Figure: Burst mode waveforms 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.
The demag(netization) sense is realized by an internal circuit that guards the voltage (Vdemag) at pin 4 that is connected to V winding by resistor R1 (R3522). The Figure below shows the circuit and the idealized waveforms across this winding. Figure: Demagnetization protection Over Voltage Protection The Over Voltage Protection ensures that the output voltage will remain below an...
Over Current Protection The internal OCP protection circuit limits the 'sense' voltage on pin 5 to an internal level. Over Power Protection During the primary stroke, the rectified AC input voltage is measured by sensing the current drawn from pin 4 (DEM). This current is dependent on the voltage on pin 9 of transformer 5520 and the value of R3522.
Page 115
Over Temperature protection When the junction temperature exceeds the thermal shutdown temperature (typ. 140º C), the IC will disable the driver. When the V voltage drops to UVLO, the V capacitor will be recharged to the V(start) level. If the temperature is still too high, the voltage will drop again to the UVLO level (Safe-Restart mode).
Page 116
Control Figure: Block diagram set control 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 uP. Communication to other ICs is done via the I C-bus.
Page 117
I 2 C-Bus The main control system, which consists of the microprocessor part of the UOC (7200), is linked to the external devices (tuner, NVM, MSP, etc) by means of the I C-bus. An internal I C-bus is used to control other signal processing functions, like video processing, sound IF, vision IF, synchronization, etc.
Page 118
Y/C or CVBS source is present. The presence of an external Y/C source makes this line 'high' while a CVBS source makes the line 'low'. SEL-MAIN-FRNT-RR. This is the source select control signal from the microprocessor. This control line is under user control or can be activated by the other two control lines.
Page 119
Protection Events Several protection events are controlled by the UOC: BC protection , to protect the picture tube from a too high beam current. The UOC has the capability of measuring the normal back level current during the vertical flyback. So if for some reason the CRT circuit is malfunctioning (i.e. high beam current), the normal black current will be out of the 75 A range, and the UOC will trigger the power supply to shut down.
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...
Page 121
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 Circuit Board Assembly Closed Caption ComPair Computer aided rePair Cathode Ray Tube or picture tube Customer Service Mode Color Transient Improvement: manipulates steepness of chroma transients...
Page 122
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-INFORMATION Extra High Tension 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...
Page 123
Monochrome TV system. Sound carrier distance is 6.0 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.
Page 124
Not Connected NICAM Near Instantaneous Compounded Audio Multiplexing. This is a digital sound system, mainly used in Europe. 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.
Page 125
Picture Tube Panel (or CRT-panel) Random Access Memory Remote Control handset Remote Control system 5, signal from the remote control receiver 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...
SVHS Super Video Home System Software Total Harmonic Distortion Teletext Microprocessor Ultimate One Chip Vertical Acquisition VBAT Main supply voltage for the deflection stage (mostly 141 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...
Page 131
All Models (7638) - [A1] Power Supply (1 of 14)
Page 132
All Models (7638) - [A2] Line Deflection (2 of 14)
Page 133
All Models (7638) - [A3] Frame Deflection (3 of 14)
Page 134
All Models (7638) - [A4] Tuner IF (4 of 14)
Page 135
All Models (7638) - [A5] Video IF + Sound IF (5 of 14)
Page 136
All Models (7638) - [A6] Synchronization (6 of 14)
Page 137
All Models (7638) - [A7] Control (7 of 14)
Page 138
All Models (7638) - [A8] Audio Amplifier (8 of 14)
Page 139
All Models (7638) - [A9] NICAM + 2CS + BTSC (Stereo/SAP) Decoder (9 of 14)
Page 140
All Models (7638) - [A10] Audio/Video Source Switching (10 of 14)
Page 141
All Models (7638) - [A11] BTSC NDBX Stereo Decoder (11 of 14)
Page 142
All Models (7638) - [A12] Front I/O + Front Control + Headphone (12 of 14)
Page 143
All Models (7638) - [A13] Rear I/O Cinch (13 of 14)
Page 144
All Models (7638) - [A16] PIP Interface Circuit + Tilt Interface (14 of 14)
Page 145
All Models (7638) - [B1] ECO SCAVEM (1 of 2)
Page 146
All Models (7638) - [B2] ECO SCAVEM (2 of 2)
Page 147
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02, 27DV693R37A, 30DV693R37A, , 20DV693R01, 28PW6532/85R, 29DV6931/85R, 29DV693R85A, 29DV693R85C (7638) - [C] Side AV + HP Panel...
Page 148
NOT USED IN MODELS: , 20DV6932/37R, 20DV693R02, 20DV693R01, 20MS334R/37, 20MS334R01, 20PT633R/37, 20PT643F/35R, 20PT643R01, 21PT6331/44R, 21PT633R85C (7638) - [C1] Side AV + HP Panel, Slim Profile 21PT6431/44R, 21PT643R85C, 24PT633F/35R, 24PT633R37, 25LT220L/17, 25PT633R85C, 25ST220L/17, 27DV693R37A, 27LT220L/17, 27MS3404/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27S...
Page 149
USED ONLY IN MODELS: 32PT543S37A, 32PT543S37G, 32PT553S37A, 32PT553S37G, 25PT633R85C, 24PT633R37, 32PT541S37G, MS3252S431, MS3652S427, 24PT633F/35R (7638) - [C2] Side AV + HP Panel, Wide Profile 27MS3404/17...
Page 150
USED ONLY IN MODELS: 21PT643R85C, 27PT633R37C, 29PT633R85A, 29PT633R85C, 20PT643R01, 27LT621L/17, 32LT621L/17, 20PT643F/35R, 27MS4504/17, 21PT6431/44R (7638) - [E] Top Control Panel (Round)
Page 151
USED ONLY IN MODELS: 32PT553S37A, 32PT553S37G (7638) - [E1] Top Control Panel (Oval)
Page 152
USED ONLY IN MODELS: 27PT643R37A, 27PT663R37A, 27PT663R37C, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A, 20PT653R/37, 20DV6932/37R, 20DV693R02 (7638) - [T] Top Control Panel 27DV693R37A, 27PT643F35A, 29PT643R85A, 30DV693R37A, , 30PW633F35A, 30PW633R37A, 30PW633R37C, 20DV693R01, 27PT643R/37C, 27PT643R/97A, 28PW6532/85R, 32PW633R85C, 29PT663S85A, 29DV6931/85R, 29DV693R85A...
Page 153
USED ONLY IN MODELS: 27PT663R37A, 27PT663R37C, 29PT563S85A, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A, 27PT563S37A, 30PW633F35A, 32LT621L/17 (7638) - [F] 2D 3 Line Comb Filter 32PT563S37A, 32PT563S37G, 32PW633R85C, 29PT663S85A, 36ST220P/35, 36ST230P/35, 32ST230P/35, 32ST220P/17, 32PT563R85G, 29PT6631/44...
Page 154
USED ONLY IN MODELS: 27PT633R37C, 27PT643R37A, 27PT663R37A, 27PT663R37C, 29PT633R85A, 29PT633R85C, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A (7638) - [Q1] Front Interface Panel 20PT653R/37, 20DV6932/37R, 20DV693R02, 27DV693R37A, 27LT621L/17, 27PT643F35A, 29PT643R85A, 30DV693R37A, , 30PW633F35A, 30PW633R37A, 30PW633R37C, 32LT621L/17, 20DV693R01, 27PT643R/37C, 27PT643R/97A,...
Page 155
USED ONLY IN MODELS: 28PW6532/85R (7638) - [S] Matrix Surround Panel...
Page 156
USED ONLY IN MODELS: 32PT633R37D, 32PT663R37A, 32LT621L/17 (7638) - [W] DAF Panel + Inner Pin Cushion Correction...
Page 157
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02 (7638) - [M1] Audio (1 of 4)
Page 158
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02 (7638) - [M2] Video (2 of 4)
Page 159
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02 (7638) - [M3] Power Supply (3 of 4)
Page 160
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02 (7638) - [M4] Control (4 of 4)
Page 161
USED ONLY IN MODELS: 27DV693R37A, 30DV693R37A, , 20DV693R01, 29DV6931/85R, 29DV693R85A, 29DV693R85C (7638) - [M1] Video Audio Switch (1 of 2)
Page 162
USED ONLY IN MODELS: 27DV693R37A, 30DV693R37A, , 20DV693R01, 29DV6931/85R, 29DV693R85A, 29DV693R85C (7638) - [M3] Power Supply (2 of 2)
Page 163
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02, 27DV693R37A, 30DV693R37A, , 20DV693R01, 29DV6931/85R, 29DV693R85A, 29DV693R85C (7638) - DVD Eject Panel...
Page 164
USED ONLY IN MODELS: 27ST110P/35 (7638) - Channel One Card...
Page 165
USED ONLY IN MODELS: 27ST230P/35, 32ST230P/35 (7638) - Scan 4 Card 1...
Page 166
USED ONLY IN MODELS: 27ST230P/35, 32ST230P/35 (7638) - Scan 4 Card 2...
Page 167
USED ONLY IN MODELS: 27ST230P/35, 32ST230P/35 (7638) - Scan 4 Card 3...
Page 168
USED ONLY IN MODELS: 27ST230P/35, 32ST230P/35 (7638) - Net 1 Panel...
Page 169
USED ONLY IN MODELS: 27ST420L/17, 27ST421L/17 (7638) - ITV Front Jack Panel...
Page 170
USED ONLY IN MODELS: 25ST220L/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27ST420L/17, 27ST421L/17, 32ST230P/35, 36ST220P/35, 36ST230P/35 (7638) - EPS Module 32ST220P/17...
Page 171
USED ONLY IN MODELS: 25LT220L/17, 25LT421L/17, 25ST220L/17, 27LT220L/17, 27LT621L/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35 (7638) - SP/LS Module, Vertical Profile 27ST420L/17, 27ST421L/17, 32LT621L/17, 32ST230P/35, 36ST220P/35, 36ST230P/35, 32ST220P/17...
Page 172
USED ONLY IN MODELS: 25ST220L/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27ST420L/17, 27ST421L/17, 32ST230P/35, 36ST220P/35, 36ST230P/35 (7638) - Interface Panel (ITV) 32ST220P/17...
Page 173
All Models (7638) - Main Chassis (Component Side)
Page 174
All Models (7638) - Main Chassis (Copper Side)
Page 175
All Models (7638) - CRT Panel (Component Side)
Page 176
All Models (7638) - CRT Panel (Copper Side)
Page 177
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02, 27DV693R37A, 30DV693R37A, , 20DV693R01, 28PW6532/85R, 29DV6931/85R, 29DV693R85A, 29DV693R85C (7638) - Side AV + HP Panel (Component Side)
Page 178
NOT USED IN MODELS: , 20DV6932/37R, 20DV693R02, 20DV693R01, 20MS334R/37, 20MS334R01, 20PT633R/37, 20PT643F/35R, 20PT643R01, 21PT6331/44R, 21PT633R85C (7638) - Side AV + HP Panel , Slim Profile (Com 21PT6431/44R, 21PT643R85C, 24PT633F/35R, 24PT633R37, 25LT220L/17, 25PT633R85C, 25ST220L/17, 27DV693R37A, 27LT220L/17, 27MS3404/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27S...
Page 179
NOT USED IN MODELS: , 20DV6932/37R, 20DV693R02, 20DV693R01, 20MS334R/37, 20MS334R01, 20PT633R/37, 20PT643F/35R, 20PT643R01, 21PT6331/44R, 21PT633R85C (7638) - Side AV + HP Panel, Slim Profile (Copp 21PT6431/44R, 21PT643R85C, 24PT633F/35R, 24PT633R37, 25LT220L/17, 25PT633R85C, 25ST220L/17, 27DV693R37A, 27LT220L/17, 27MS3404/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27S...
Page 180
USED ONLY IN MODELS: 32PT543S37A, 32PT543S37G, 32PT553S37A, 32PT553S37G, 25PT633R85C, 24PT633R37, 32PT541S37G, MS3252S431, MS3652S427, 24PT633F/35R (7638) - Side AV Panel + HP Panel, Wide Profile ( 27MS3404/17...
Page 181
USED ONLY IN MODELS: 32PT543S37A, 32PT543S37G, 32PT553S37A, 32PT553S37G, 25PT633R85C, 24PT633R37, 32PT541S37G, MS3252S431, MS3652S427, 24PT633F/35R (7638) - Side AV Panel + HP Panel, Wide Profile ( 27MS3404/17...
Page 182
USED ONLY IN MODELS: 21PT643R85C, 27PT633R37C, 29PT633R85A, 29PT633R85C, 20PT643R01, 27LT621L/17, 32LT621L/17, 20PT643F/35R, 27MS4504/17, 21PT6431/44R (7638) - Top Control Panel, Round (Component S...
Page 183
USED ONLY IN MODELS: 21PT643R85C, 27PT633R37C, 29PT633R85A, 29PT633R85C, 20PT643R01, 27LT621L/17, 32LT621L/17, 20PT643F/35R, 27MS4504/17, 21PT6431/44R (7638) - Top Control Panel, Round (Copper Side...
Page 184
USED ONLY IN MODELS: 32PT553S37A, 32PT553S37G (7638) - Top Control Panel, Oval (Component Side)
Page 185
USED ONLY IN MODELS: 32PT553S37A, 32PT553S37G (7638) - Top Control Panel, Oval (Copper Side)
Page 186
USED ONLY IN MODELS: 27PT663R37A, 27PT663R37C, 29PT563S85A, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A, 27PT563S37A, 30PW633F35A, 32LT621L/17 (7638) - 2D 3 Line Comb Filter (Component Side) 32PT563S37A, 32PT563S37G, 32PW633R85C, 29PT663S85A, 36ST220P/35, 36ST230P/35, 32ST230P/35, 32ST220P/17, 32PT563R85G, 29PT6631/44...
Page 187
USED ONLY IN MODELS: 27PT663R37A, 27PT663R37C, 29PT563S85A, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A, 27PT563S37A, 30PW633F35A, 32LT621L/17 (7638) - 2D 3 Line Comb Filter (Copper Side) 32PT563S37A, 32PT563S37G, 32PW633R85C, 29PT663S85A, 36ST220P/35, 36ST230P/35, 32ST230P/35, 32ST220P/17, 32PT563R85G, 29PT6631/44...
Page 188
USED ONLY IN MODELS: 27PT633R37C, 27PT643R37A, 27PT663R37A, 27PT663R37C, 29PT633R85A, 29PT633R85C, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A (7638) - Front Interface Panel 20PT653R/37, 20DV6932/37R, 20DV693R02, 27DV693R37A, 27LT621L/17, 27PT643F35A, 29PT643R85A, 30DV693R37A, , 30PW633F35A, 30PW633R37A, 30PW633R37C, 32LT621L/17, 20DV693R01, 27PT643R/37C, 27PT643R/97A,...
Page 189
USED ONLY IN MODELS: 28PW6532/85R (7638) - Subwoofer Panel (Component Side)
Page 190
USED ONLY IN MODELS: 27PT643R37A, 27PT663R37A, 27PT663R37C, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A, 20PT653R/37, 20DV6932/37R, 20DV693R02 (7638) - Top Control Panel (Component Side) 27DV693R37A, 27PT643F35A, 29PT643R85A, 30DV693R37A, , 30PW633F35A, 30PW633R37A, 30PW633R37C, 20DV693R01, 27PT643R/37C, 27PT643R/97A, 28PW6532/85R, 32PW633R85C, 29PT663S85A, 29DV6931/85R, 29DV693R85A...
Page 191
USED ONLY IN MODELS: 27PT643R37A, 27PT663R37A, 27PT663R37C, 29PT663R85A, 29PT663R85C, 32PT633R37D, 32PT663R37A, 20PT653R/37, 20DV6932/37R, 20DV693R02 (7638) - Top Control Panel (Copper Side) 27DV693R37A, 27PT643F35A, 29PT643R85A, 30DV693R37A, , 30PW633F35A, 30PW633R37A, 30PW633R37C, 20DV693R01, 27PT643R/37C, 27PT643R/97A, 28PW6532/85R, 32PW633R85C, 29PT663S85A, 29DV6931/85R, 29DV693R85A...
Page 192
USED ONLY IN MODELS: 32PT633R37D, 32PT663R37A, 32LT621L/17 (7638) - DAF Panel + Inner Pin Cushion Correction...
Page 193
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02 (7638) - DVD Interface Panel, SD3.1 DVD Module (Component Side)
Page 194
USED ONLY IN MODELS: 20DV6932/37R, 20DV693R02 (7638) - DVD Interface Panel, SD3.1 DVD Module (Copper Side)
Page 195
USED ONLY IN MODELS: 27DV693R37A, 30DV693R37A, , 20DV693R01, 29DV6931/85R, 29DV693R85A, 29DV693R85C (7638) - DVD Interface Panel, SD5.12 DVD Module (Component Side)
Page 196
USED ONLY IN MODELS: 27DV693R37A, 30DV693R37A, , 20DV693R01, 29DV6931/85R, 29DV693R85A, 29DV693R85C (7638) - DVD Interface Panel, SD5.12 DVD Module (Copper Side)
Page 197
USED ONLY IN MODELS: 27ST110P/35 (7638) - Channel One Card (Component Side)
Page 198
USED ONLY IN MODELS: 27ST230P/35, 32ST230P/35 (7638) - Scan 4 Card (Component Side)
Page 199
USED ONLY IN MODELS: 27ST230P/35, 32ST230P/35 (7638) - Net 1 Panel (Component Side)
Page 200
USED ONLY IN MODELS: 27ST230P/35, 32ST230P/35 (7638) - Net 1 Panel (Copper Side)
Page 201
USED ONLY IN MODELS: 27ST420L/17, 27ST421L/17 (7638) - ITV Front Jack Panel (Component Side)
Page 202
USED ONLY IN MODELS: 27ST420L/17, 27ST421L/17 (7638) - ITV Front Jack Panel (Copper Side)
Page 203
USED ONLY IN MODELS: 25ST220L/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27ST420L/17, 27ST421L/17, 32ST230P/35, 36ST220P/35, 36ST230P/35 (7638) - EPS Module (Component Side 32ST220P/17...
Page 204
USED ONLY IN MODELS: 25LT220L/17, 25LT421L/17, 25ST220L/17, 27LT220L/17, 27LT621L/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35 (7638) - SP/LS Module, Vertical (Copper Side) 27ST420L/17, 27ST421L/17, 32LT621L/17, 32ST230P/35, 36ST220P/35, 36ST230P/35, 32ST220P/17...
Page 205
USED ONLY IN MODELS: 25ST220L/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27ST420L/17, 27ST421L/17, 32ST230P/35, 36ST220P/35, 36ST230P/35 (7638) - ITV Interface Panel (Compo 32ST220P/17...
Page 206
USED ONLY IN MODELS: 25ST220L/17, 27ST110P/35, 27ST220L/17, 27ST220L17, 27ST240P/35, 27ST230P/35, 27ST420L/17, 27ST421L/17, 32ST230P/35, 36ST220P/35, 36ST230P/35 (7638) - ITV Interface Panel (Coppe 32ST220P/17...
Page 208
20DV6932/37R - Manual no. 7638 2254 Res, Zero ohm, "Chip" Jumper ..3198 021 90020 Main Chassis Parts Main Chassis Parts 2330 Cap, 100n, 10%, 250v, Metalized Polyest er....2222 368 90177 0211 2 Pin Connector.
Page 228
20MS334R/37 (continued) Top Control Panel Parts Top Control Panel Parts Cabinet & Accessory Parts Cabinet & Accessory Parts S AC01 AC Cord....3139 128 76161 AC04 Batteries for Remote Control Transmitte 9082 100 90002 AC05...
Page 229
20MS334R01 - Manual no. 7638 2474 Cap, 2n2, 10%, 50v, Ceramic..3198 017 02220 Main Chassis Parts Main Chassis Parts 2475 Cap, 2n2, 10%, 50v, Ceramic..3198 017 02220 2476 Cap, 4n7, 10%, 50v, Ceramic.
Page 230
20MS334R01 (continued) 3000 Res, 100 ohm, 5%, 1/6W, Carbon Film. . 3198 011 01010 3493 Res, 6R8, 5%, 1/3W, Metal Film ..2306 204 03688 3001 Res, 100 ohm, 5%, 1/6W, Carbon Film. . 3198 011 01010 3494 Res, 4R7, 5%, 1/2W, Metal Film .
Page 232
20MS334R01 (continued) Top Control Panel Parts Top Control Panel Parts Cabinet & Accessory Parts Cabinet & Accessory Parts S AC01 AC Cord....3139 128 76161 AC04 Batteries for Remote Control Transmitte 9082 100 90002 AC05...
Page 233
20PT633R/37 - Manual no. 7638 2474 Cap, 2n2, 10%, 50v, Ceramic..3198 017 02220 Main Chassis Parts Main Chassis Parts 2475 Cap, 2n2, 10%, 50v, Ceramic..3198 017 02220 2476 Cap, 4n7, 10%, 50v, Ceramic.
Page 234
20PT633R/37 (continued) 3000 Res, 100 ohm, 5%, 1/6W, Carbon Film. . 3198 011 01010 3493 Res, 6R8, 5%, 1/3W, Metal Film ..2306 204 03688 3001 Res, 100 ohm, 5%, 1/6W, Carbon Film. . 3198 011 01010 3494 Res, 4R7, 5%, 1/2W, Metal Film .
Page 236
20PT633R/37 (continued) Top Control Panel Parts Top Control Panel Parts Cabinet & Accessory Parts Cabinet & Accessory Parts S AC01 AC Cord....3139 128 76161 AC04 Batteries for Remote Control Transmitte 9299 000 65263 AC05...
Page 237
20PT643F/35R - Manual no. 7638 2247 Cap, 1000u, 20%, 16v, Electrolytic . . 4822 124 81144 Main Chassis Parts Main Chassis Parts 2248 Cap, 22n, 10%, 25v, Ceramic..2238 916 15641 2249 Cap, 22n, 10%, 25v, Ceramic..
Page 366
27PT643R/37C (continued) Top Control Panel Assembly ..3139 187 15841 Cabinet & Accessory Parts Cabinet & Accessory Parts S AC01 AC Cord....3135 010 03831 AC03 Anode Lead Spacer (3 Used) .
Page 372
27PT643R/97A (continued) Top Control Panel Assembly ..3139 187 15841 Cabinet & Accessory Parts Cabinet & Accessory Parts S AC01 AC Cord....3135 010 03831 AC03 Anode Lead Spacer (3 Used) .
Page 373
27PT643R37A - Manual no. 7638 2330 Cap, 100n, 10%, 250v, Metalized Polyest Main Chassis Parts Main Chassis Parts er....2222 368 90177 2331 Cap, 10n, +80/-20% 1000v, Ceramic.
Page 390
27PT663R37C (continued) 6692 IR Receiver, TSOP1836UH3V..9322 127 54667 AC20J1 Top Control Bracket..3139 124 39802 9001 Wire Jumper....3198 036 90010 AC20J2 Top Control Buttons.
Page 490
29PT6631/44 (continued) REMOTE Remote Control Transmitter, RC19335004/ 01....3139 228 86464 S = Safety Part Be sure to use exact replacement part.
Page 491
29PT663R85A - Manual no. 7638 2341 Cap, 3n3, 10%, 500v, Ceramic ..3198 019 43320 Main Chassis Parts Main Chassis Parts 2342 Cap, 560p, 5%, 50v, Ceramic..3198 016 05610 2343 Cap, 2n2, 10%, 2000v, Ceramic.
Page 582
32PT563S37A (continued) ITV Front Jack Panel Parts ITV Front Jack Panel Parts Net 1 Panel (part of Scan 4 Card Assembly) Net 1 Panel (part of Scan 4 Card Assemb Scan 4 Card (part of Scan 4 Card Assembly) Scan 4 Card (part of Scan 4 Card Assemb Side Jack Panel Parts Side Jack Panel Parts 0232...
Page 588
32PT563S37G (continued) DVD Interface Panel Parts DVD Interface Panel Parts Front Interface Panel Parts Front Interface Panel Parts ITV Front Jack Panel Parts ITV Front Jack Panel Parts Net 1 Panel (part of Scan 4 Card Assembly) Net 1 Panel (part of Scan 4 Card Assemb Scan 4 Card (part of Scan 4 Card Assembly) Scan 4 Card (part of Scan 4 Card Assemb Side Jack Panel Parts...
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32PT633R37D - Manual no. 7638 2254 Res, Zero ohm, "Chip" Jumper ..3198 021 90020 Main Chassis Parts Main Chassis Parts 2330 Cap, 100n, 10%, 250v, Metalized Polyest er....2222 368 90177 0211 2 Pin Connector.
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32ST220P/17 (continued) DVD Interface Panel Parts DVD Interface Panel Parts Front Interface Panel Parts Front Interface Panel Parts ITV Front Jack Panel Parts ITV Front Jack Panel Parts Net 1 Panel (part of Scan 4 Card Assembly) Net 1 Panel (part of Scan 4 Card Assemb Scan 4 Card (part of Scan 4 Card Assembly) Scan 4 Card (part of Scan 4 Card Assemb Side Jack Panel Parts...
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TO CORRECT REGION CODE PROBLEMS IN 20DV693R01, 27DV693, AND 30DV693 WITH SD5.12 DVD USE CUSTOMER’S REMOTE 1) Power the TV from an isolation transformer. By remote turn on TV, and press eject button on the remote. This will switch the TV to DVD operation and show the DVD background display. With the DVD tray open and empty, press DVD Menu on the remote.
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TO CORRECT REGION CODE PROBLEMS IN 20DV693R02 WITH SD3.1 DVD USE CUSTOMER’S REMOTE 1) Power the TV. Turn on TV, and switch operation to DVD. Open and close DVD tray to confirm it is empty. This will switch the TV to DVD operation and show the DVD background display. THERE MAY BE NO COLOR! The next steps will correct.