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Model:D52130
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CCT210_211_Didgital_Generator_Module_TS_A36201370ACF3626E0339DFEEACC3626_25.pdf31 Digital Generator Module Troubleshooting 1. 2. 3. 4. 5. Check for +7.5 (J19305-13), -12V (J19305-14), and +12V (J19305-31) Check for clock and data on J19305-29, 30 Check for vertical and horizontal sync signals on J19305-16, 17 Check for convergence correction signals on J19305-7, 8, 9, 10, 11, and 12 If convergence correction signals are missing or not correct, replace Digital Generator Module 6. Proper signals indicate module is working.
CTC210-211_ScanRate_Convertor_TS_A2D9706F72F4182CE0339DFEEACC182C_25.pdf52 Troubleshooting SRC (Scan Rate Converter) 1. Using a color bar signal generator set for channel 3 (NTSC). Tune the instrument to receive the color bar signal on channel 3. 2. Using an oscilloscope check J32201 pins 1, 3, and 5 for proper signal. 3. If correct signal proceed to step 5. 4. If signal missing troubleshoot the I/O board. 5. Check J32201 pins 9, 10, 11, 12, and 13 for proper signal. (pin 9 and 10 aprox. +8V) (pin 11 aprox. +12V) (pin 12 = Data signal) (pin 13 = Clock signal) 6. Any voltage/signal missing or not correct on J32201 troubleshoot I/O board. 7. Bring up Guide menu see if Gemstar OSD is present on screen. 8. OSD present replace SRC module. 9. OSD not present check for sync signals on J32202 pins 9 and 10. 10.Signals missing replace SRC. 11.Signals present check for sync signals on J32501 pins 2 and 4. 12.Signals missing replace SRC. 13.Signals present check for Y Pr Pb on J32501 pins 8, 10, and 12. 14.Signals missing replace SRC. 15.Signals present troubleshoot
CTC210_211_Anamorphic_Mode_A2D7B8F7C695DA84E0339DFEEACCDA84_25.pdf25 What is Anamorphic? In the television industry "Anamorphic" is the process of converting an original movie theater motion picture format (Wide Screen) to be viewed on a standard 4:3 screen. Most movies today use the 1.85:1 ratio or larger and the standard TV screen is 1.33:1 (4:3). Another way to look at anamorphic is the process of displaying a 16:9 (1.78:1) image on a 4:3 (1.33:1) display. "Anamorphic mode" or 16:9 mode as it is sometimes called, is accomplished by reducing the wide screen format to fit between the sides of the 4:3 display. To maintain the 16:9 aspect ratio of wide screen format, vertical size is reduced creating black bars at the top and bottom of the screen much like the common letterbox image. The difference between letterbox and anamorphic is that with letterbox much of the vertical resolution is lost in the black bars. In the graphics at the bottom, anamorphic mode (Left) shows all 540 vertical lines where letterbox (Right) only 360 lines are visible. The re
CTC210_211_Audio_A2D7DCD6CD54E2CCE0339DFEEACCE2CC_25.pdf8 Audio Processing U32603 The IF processor takes the tuner IF signal and processes it, separating audio, video, and IF carrier. The separated audio is in wide band audio (WBA) and is sent to U31701 stereo decoder. U31701 The stereo decoder is IIC bus controlled and takes the WBA from the IF processor and detects mono or stereo signals and processes each channel (right and left). Secondary Audio Programing (SAP) is also decoded in U31701. The right channel is sent to audio switch U11401 and the left channel is sent to U11400. 9 U11400 / U11401 Right and Left channel audio switch switches between tuner audio and auxiliary audio inputs. U11800 The TVB or tone volume balance IC is IIC bus controlled that processes the right and left channel audio and passes it through the SRS processing. All volume, balance, and tone adjustments are done in the TVB. After SRS processing the TVB sends the audio to the audio outputs. 10 SRS (Sound Retrieval System) processing is accomplished by filterin
CTC210_211_Audio_Trblshoot_A2D7DCD6CD57E2CCE0339DFEEACCE2CC_25.pdf46 CTC210/211 Audio Troubleshooting Setup for audio troubleshooting: · AF generator set to 1KHz @ 1Vp-p · Oscilloscope · External amplifier and speakers with aux or tape input. No Audio any mode 1. Check audio outputs FIXED and VARIABLE for audio signal using oscilloscope or external amp and speakers. 2. Signal on FIXED out check U18100 and system control circuits. 3. Signal on VARIABLE out check U11900 and U11902 circuits and speaker switch (SW11900) 4. Check selected stereo output. 5. Connect AF generator to Digital TV audio inputs and select input source VGA2. 47 6. Check U11800-11, 15 for signal, no signal check generator and input circuit. 7. Check U11800-9, 19 for signal, no signal check U11800 and system control circuits. 8. Check U11800-7, 18 for signal, no signal check SRS circuit. 9. Check U11800-26, 27 for signal, no signal check U11800 and system control circuits. 10. Check U11800-3, 8 for 0Vdc (Speaker Mute) a high on either pin indicates speakers are muted. 11. Check m
CTC210_211_Deflection_A2D7C1C0BF4F8A90E0339DFEEACC8A90_25.pdf24 Deflection The Horizontal deflection circuit consists of Horizontal Scan, HV generator, and Horizontal drive. Deflection processing is done by U14350 horizontal and vertical processor located on the deflection SIP board. Horizontal and Vertical sync from the I/O board provide sync signals to U14350. A LLC (Line-Locked Clock) circuit consists of a PLL IC (U14351), filter, and external VCO. Horizontal and vertical drives are provided by U14350. The horizontal drive circuit consists of T14300, T14451, Q14451 and their supporting components. The horizontal drive transistor Q14451 drives the yoke and provides sync signal to U14711 horizontal processor. The horizontal processor drives the high voltage generator (Q14700/701) which drives the IHVT (T14700). Horizontal drive and High voltage generation are independent of each other and can operate independent of each other. U24800 (D/A converter) provides control to U14711, focus screen assembly and 1H switching. Vertical signal processing
CTC210_211_Digital_Convergence_A362097FFFBFAAB0E0339DFEEACCAAB0_25.pdf28 Digital Convergence The effects of the Earths magnetic field change with the placement of the TV and cause picture distortions. These distortions are automatically corrected using a microprocessor and data from optical sensors positioned around the outer edge of the screen. This process is called digital convergence. The digital convergence system generates six drive signals that correct geometry of the image created by the three picture tubes. This is accomplished by a matrix of thirteen vertical points and sixteen horizontal that are assigned a digital value that is stored in nonvolatile memory. Each of these data points can be individually changed. The digital information is converted to six analog signals that drive the convergence amplifiers. The amplified signals are used to drive the convergence yokes. Sensor Locations 29 There are customer menu adjustments and service adjustments. A video test pattern is generated by the digital convergence to aid in converging the set. T
CTC210_211_Digital_Convergence_Pwr_Suply_A36201370ACC3626E0339DFEEACC3626_25.pdf34 Digital Convergence Power Supply Overview The digital convergence power supply utilized in the CTC211 chassis is a switch mode supply. The on/off signal for the supply is the +12Vr (run) supply from the main chassis. Raw B+ from the chassis is applied to the output transistor Q701. The oscillator Q702/703 drives Q701. The output from Q701 is coupled through T702. There are four (4) primary convergence power supplies, +20V, -45V, ­20V and +7.5V. The +20V is used as the feedback reference voltage for regulation (via Q713). The regulator / reference signal is applied to the opto-isolator (U702) whose output is applied to the osc/driver circuit which in turn controls the duty cycle of the power supply. The opto-isolator is used to isolate hot from cold ground on the input side. The transformer T702 provides this isolation on output side. The ­20V and +7.5V supplies along with the +12Vr are routed directly to the Digital Generator circuit board where other supplies are developed. Troub
CTC210_211_Digital_Generator_Module_A36201370ACD3626E0339DFEEACC3626_25.pdf30 A video test pattern is generated by the digital convergence to aid in converging the set. There are customer menu adjustments and service adjustments. The use of Chipper Check will speed up the alignment process in the event of major component failure. Digital Generator Module (DGM) The CTC211 uses a Digital Generator Module (DGM) for convergence correction and auto convergence. Inside the DGM are five EEPROMS, Convergence Micro and a Digicon IC. U502 is the convergence micro. The purpose of U502 is calculating convergence correction based on information from the optical sensors. The convergence micro controls the Digicon and the EEPROMs. U501 (Digicon) generates the convergence correction signals that are fed out to the convergence amplifiers. Data stored in the EEPROMs is used for alignment information for the different scan modes. U510, 11, 12, and 13 are mode EEPROMs. U509 is the factory reference EEPROM. Two buffer ICs (U503 and 504) buffer the output from the Digicon IC to t
CTC210_211_Diode_Modulator_A2D7B8F7C6A2DA84E0339DFEEACCDA84_25.pdf26 Motion Picture Formats Compared to Standard TV and HDTV Formats To review a bit of cinema and television history, most movies were and are filmed in what is referred to as "wide-screen" format. The Movie Industry uses this format because wide screen is closer to the human eyes' width and height perception. There are many so-called "wide-screen" formats currently in use by the Movie industry. Among the more popular are: 1.85 and 2.35; however, older movies were filmed in many screen ratios including: 1.33, 1.17, 1.375, 1.66, 1.75, 2.21, 2.40, 2.55, 2.59, and 2.76 (These ratios are more correctly written as "1.85:1...etc") Both standard NTSC and SDTV are 1.33:1 (4:3) with High Definition ATSC (16:9) at 1.78:1. Normal US movie screen standards have more or less settled on 1.85:1. There is little to no loss of picture information when converting the most common movie format, 1.85:1 to the HDTV format of 16:9 (1.78:1). Diode Modulator The diode modulator is used to correct the inner pi
CTC210_211_NTSC_Video_Trblshoot_A2D7B8F7C6B0DA84E0339DFEEACCDA84_25.pdf48 CTC210/211 Video Troubleshooting (NTSC) Setup for video troubleshooting: · Color Bar generator capable of multi-sync · Oscilloscope · DVM No Video (NTSC) 1. 2. 3. 4. 5. 6. 7. 8. Bring up PIP and look for PIP box. If PIP box is present, go to step 4. No PIP box, suspect U18100 circuit. Inject color bar signal on Aux1 and check for signal at U18100-51. No signal on U18100-51, check U16501 Video Switching circuit. Signal present on U18100-51 check for YC at pins 49 and 47 of U18100. If Signal missing, suspect U18100 circuit. Signal present check U16500-20 and 21. No signal at this point indicates open circuit between U18100 and U16500. 9. If Signal present check U16500-18 and 17 for YC signal. 10. No signal, suspect U16500 circuit. 11. Signal present, check U18100-3 and 5 for YC signal. No signal at this point indicates open circuit between U16500 and U18100. 12. Signal present, suspect U18100 circuit. NOTE: Video from any S-Video mode will indicate U18100 and U16500 are working. Be s
CTC210_211_Overview_A2D95EE613B6C3CEE0339DFEEACCC3CE_25.pdf4 CTC210/211 Introduction The CTC210/211 is the latest digital chassis designed by Thomson to compete with the ever-changing HD monitor and HDTV markets. The CTC210/211 uses a Scan Rate Converter (SRC) De-Interlacer to allow 1H interlaced sources to be displayed at 2H progressive scan. The deflection circuit will accommodate 1080i (2.14H) "native" scan to support ATSC and 540p sources; however, the HD input will only synchronize at 33.75kHz (2.14H). The CTC210 is a direct view chassis capable of driving the new "TruFlat" CRTs, while the CTC211 is used for projection TVs. Being related to the MM and DTV chassis, the CTC210/211 has a similar chassis layout. The I/O board has the same layout as the MM and DTV with fewer parts. The main board is also similar and has fewer parts. What's new are the Scan Rate Converter (De-interlacer) and the Diode Modulator. The Diode Modulator is only used for the TruFlat picture tubes. The CTC210/211 is not just a HD monitor but a NTSC television with bo
CTC210_211_Power_Supply_A2D7C1C0BF548A90E0339DFEEACC8A90_25.pdf23 CTC210/211 Power Supply The CTC210/211 standby power supply is a Zero Voltage switching (ZVS) power supply similar to that found in the MM10X and DTV chassis. When AC power is applied, Q601 starts to oscillate driving the standby x-former, which develops the standby voltages. Feedback for regulation comes from the +5Vs and controls Q601s switching. The longer Q601 is on, the more energy the standby x-former will transfer increasing the output voltage. Unlike the standby power supply, the run supply has a switched raw B+ that is controlled by the SysCon. Like the other ZVS power supplies, Q100 is the switch and functions the same as Q601 in the standby power supply. Feedback comes from the +68Vr and controls the on/off cycle of Q100. +33Vs +15Vs Q601 Stby Power Supply Xformer +12Vs -12Vs +8Vs +5Vs -15Vr +5Vr +15Vr Q100 Run Power Supply Xformer +24Vr Audio Ret +31.5 AC IN Rectifier Raw B+ Feed Back On/Off Feed Back To System Control +68Vr
CTC210_211_Power_Supply_A2D7C1C0BF678A90E0339DFEEACC8A90_25.pdf23 CTC210/211 Power Supply The CTC210/211 standby power supply is a Zero Voltage switching (ZVS) power supply similar to that found in the MM10X and DTV chassis. When AC power is applied, Q601 starts to oscillate driving the standby x-former, which develops the standby voltages. Feedback for regulation comes from the +5Vs and controls Q601s switching. The longer Q601 is on, the more energy the standby x-former will transfer increasing the output voltage. Unlike the standby power supply, the run supply has a switched raw B+ that is controlled by the SysCon. Like the other ZVS power supplies, Q100 is the switch and functions the same as Q601 in the standby power supply. Feedback comes from the +68Vr and controls the on/off cycle of Q100. +33Vs +15Vs Q601 Stby Power Supply Xformer +12Vs -12Vs +8Vs +5Vs -15Vr +5Vr +15Vr Q100 Run Power Supply Xformer +24Vr Audio Ret +31.5 AC IN Rectifier Raw B+ Feed Back On/Off Feed Back To System Control +68Vr
CTC210_211_ScanB+_Supply_Trblshoot_A2D9706F72E8182CE0339DFEEACC182C_25.pdf38 Troubleshooting Scan B+ Supply (Q14800) 1. Obtain latest Chipper Check failure code and check circuit areas accordingly. IMPORTANT: DO NOT reinitialize the EEPROM! 2. Remove & secure CRT CBA. 3. Disable Horizontal Drive Q14451 by removing L14454 (removes B+ from Q14451). 4. Disable Scan Loss Detect on Main CBA by shorting B-E of Q14813. 5. Unsolder pin 18 of J14102 (defeats Scan Loss Detect from deflection SIP CBA). 6. Turn instrument on and measure Scan B+ voltage (TP14801); should be between 130-145VDC. 7. If Scan B+ = 130-145VDC (2H Scan B+ supply is operational), check collector circuit of Q14451 and yoke return circuitry. 8. If horizontal collector circuit checks OK, check for horizontal drive from Deflection SIP CBA. 9. Check Q14805 and associated components. 10. Verify that Q14811 is turned off (always OFF except during scan loss shutdown). 11. If Q14805 & Q14811 checks OK, go to next step. 12. If Scan B+ (TP14801) is below 130, check 2H Scan B+ generator and Regulator circu
CTC210_211_Scan_Loss_Detect_Trblshoot_A2D7C1C0BF638A90E0339DFEEACC8A90_25.pdf41 Troubleshooting Scan Loss Detect Symptom: "Cycling" Shutdown NOTE: In order to effectively troubleshoot the horizontal drive circuit, the scan loss detect circuits must be defeated. Refer to the Scan Loss Detect section. 1. Obtain latest Chipper Check failure code and check circuit areas accordingly. IMPORTANT: DO NOT reinitialize the EEPROM! 2. Remove & secure CRT CBA. 3. Check standby and main power supplies. 4. Check for horizontal drive at TP14301 (connect scope across primary of T14300). 5. Check base drive of Q14451 (should be very similar to TP14301). 6. Check collector waveform of Q14451 (amplitude & shape are critical). 7. If there is NO collector waveform present, check Q14451 and Scan B+ generator circuits. 8. If waveform is present and the shape is correct but approximately Ѕ amplitude, check for an open in yoke and yoke return circuitry. 9. If waveform is low and distorted (ringing), unplug horizontal yoke. 10. If waveform is still distorted, check all components in Q1
CTC210_211_Scan_Rate_Convertor_A2D9706F72F1182CE0339DFEEACC182C_25.pdf22 Scan Rate Converter (SRC) The 1H YUV signal is sent to the Matrix switch (U32201) from the YUV switching IC. Gemstar OSD is switched in at U32201 and both signals are sent to the digital decoder. The digital decoder takes the resulting YPrPb signal from the Matrix switch, digitizes it, and formats it into a CCIR656 data stream. The decoder is sync master and provides horizontal and vertical signals to the Gemstar module. The digitized video and sync signals are passed to the de-interlace IC. This IC examines the incoming video data (storing fields at a time), and determines the best way of creating the interpolated lines. If there is no motion detected, the system repeats the previous field's information to provide a complete frame of non-moving video. If motion is detected, vertical/temporal filtering is applied to the lines and fields around the interpolated line to provide a best-case line. The resulting 2H scan-rate digital video is then fed to a triple DAC for conversion to an
CTC210_211_System_Control_A2D9706F72F9182CE0339DFEEACC182C_25.pdf6 System Control The CTC210/211 uses a single Thomson ST9 family micro controller (microprocessor). It is a 56-pin SDIP package using a 16-bit processor with 8 D/A (Digital to Analog) converter ports individually addressable for different functions. Communications with connected devices utilize the IIC (Inter Integrated Circuit) protocol. An integrated OSD (On-Screen Display) peripheral function allows a display of up to 15 lines, 34 characters long, using 8 colors, 4 font sizes. The microprocessor decodes closedcaptioned information when available using the OSD to display it. Programming information is stored outboard from the microprocessor in a 4KiloBit (512Kbyte) EEPROM (U13102) that contains all system control functions, some chassis alignments, status registers to store customer settings and current operating conditions. The System Control microprocessor IC, U13101, is responsible for monitoring and controlling virtually all functions of the chassis. U13101 receives all operator
CTC210_211_Video_A2DA612370D8758EE0339DFEEACC758E_25.pdf11 Video Processing U16500 S-Video switching processes the selected S-Video input and sends the separate Y/C components to the FPIP U18100. 12 U16501 Composite Video switching processes the selected source and sends the composite video to the FPIP (U18100). 13 U18100 The FPIP process NTSC signals and PIP signals and sends the Y/C components to U22300. 14 U22300 NTSC Decoder converts the Y/C signal from U18100 to YUV (1H). U22300 also processes the 2H YPrPb signal and outputs RGB to the CRT(s). 15 U22402 YUV and YPrPb switching IC selects between component in and YUV converted NTSC and routes the signals to U22401 and U32201. 16 U32201 The Matrix switch takes 1H YUV and Gemstar OSD and switches the output for up-conversion 17 U32251 The digital decoder converts analog NTSC video to digitized component video. The CCIR656 data is sent to the de-interlacer. 18 U32301 De-interlacer takes the digital data and reformats it to progressive scan. This process also provides the maximum i
CTC210_211_YUV_Video_Trblshoot_A2D7C1C0BF738A90E0339DFEEACC8A90_25.pdf50 CTC210/211 Video Troubleshooting (YUV) Setup for video troubleshooting: · Color Bar generator capable of multi-sync · Oscilloscope · DVM No Video any mode (Video Processing) 1. Access user menu and look for OSD. 2. If OSD present go to Video Switching circuit. 3. Inject color bar signal on High Resolution Input and check for signal at U22300-51, 52, and 53. 4. No signal on U22300-51, 52 and 53, check Video Switching circuit U22401 and U38200. 5. Signal present on U22300-51, 52 and 53 check blanking pins 24 and 25 of U22300 for proper signal and DC voltage. 6. If Voltage missing, check blanking circuit. 7. Check U22300-32 for proper 3.5V DC. 8. Voltage low check Q22305 and associated circuits. 9. Check U22300-36 OSD FS for 0V dc. NOTE: DC on this pin will result in blanking of video. Signal should only be present when OSD is displayed. 10. Check U22300-41, 42 and 43 for signal. 11. No signal suspect U22300 12. Signals present check CRT drive circuit. NOTE: Video in any one mode will
CTC211_DigiCon_Power_Supply_Trlbshoot_A362097FFFC2AAB0E0339DFEEACCAAB0_25.pdf34 Digital Convergence Power Supply Overview The digital convergence power supply utilized in the CTC211 chassis is a switch mode supply. The on/off signal for the supply is the +12Vr (run) supply from the main chassis. Raw B+ from the chassis is applied to the output transistor Q701. The oscillator Q702/703 drives Q701. The output from Q701 is coupled through T702. There are four (4) primary convergence power supplies, +20V, -45V, ­20V and +7.5V. The +20V is used as the feedback reference voltage for regulation (via Q713). The regulator / reference signal is applied to the opto-isolator (U702) whose output is applied to the osc/driver circuit which in turn controls the duty cycle of the power supply. The opto-isolator is used to isolate hot from cold ground on the input side. The transformer T702 provides this isolation on output side. The ­20V and +7.5V supplies along with the +12Vr are routed directly to the Digital Generator circuit board where other supplies are developed. Troub
CTC211_sf_audio.pdfChassis Part Symbol Defective Circuit Audio Audio mmc102G C11807 MMC101 CC U11702 MM102 J11900 Audio Audio mm101cc U11702 Symptom solution Cycles all error codes are 136, found C11807 shorted. Located at pin 2 of U11800 TVB IC. replace C11807 No audio. Found audio is getting to U11702 & not coming out. Jumped across ic and audio works. Checked the b+ & switching all are there. Replace U11702. Connect the Dead Set. The connector to the speakers are being plugged into J19104 Adapter Board Speakers to the on the right side of the chassis. (R,G,&B Drives) Wrong Location. The connector should correct location be plugged into the Rear Panel on the lower right into J11900. Right location. on the I/O panel No audio out of speakers, but had audio on fixed level. Audio going into u11702, but not Replace u11702 coming out.replaced open u11702 and q11701. and q11701 AUDIO BUZZ LEFT CHANNEL, FOUND C11912 SHORTED, IT IS BETWEEN PINS 4 & 6 OF THE OUTPUT,, PIN 6 HAD -9 VOLTS INSTEAD OF +10 VOLT
CTC211_sf_convergence.pdfChassis Part Symbol Defective Circuit MMC102 A R19624 MMC102 A sensor MMC102 G U19501 Convergence Convergence solution Resolder 220 code error shut downs. found one side of R19624 not soldered. this was at the connection connection of R19624 and C19548. This was causing the reset to not work on the U19502 R19624. Intermittent red convergence,when doing auto covergence it came up saying sensor not Reseating sensor found. Found sensor not seated properly. repaired the unit. Intermittent convergence. Problem would happen more when cold. Could not get it to act up with freeze spray or heat. Replaced U19501 and set has not acted up again. Replaced U19501. Unit is in shutdown. Error code was (not communicating with U19501). Measuring the Techi bus at J19308, we found it running about 9.8vdc. The 5VR digg (digital convergence board) was at 9.8vdc. Found CR19506 (5.1 vdc zener) on the digital convergence processing board had never been soldered. stock, convergence bowed at the top and the bo
CTC211_sf_horizontal.pdfChassis Part Symbol Defective Circuit MMC102A R14457 Horizontal Symptom solution Set would run for approximately 1 sec. and shutdown. Deflection functioned when forced on. Servicer found no horizontal pulse at pin 2 of U38302. Also no feedback pulse to base of Q14803. R14457 (1 ohm) off pin 8 of T14451 open. Replacement of resistor restored operation. Replace R14457 All three tubes were burnt right out of the box. This unit already had TV00-008 performed. I had the tech check the G1 voltage at turn off and it was not dropping down to negative voltage at turn off. It was staying around +10 volts. Checking resistance to ground on the G1 line we found it read 1K. Unhooking the red wires to the CRT assembly the resistance came back up. Found C25107 leaky. VGA input picture is narrow in 2H mode, scan B+ at 90vdc (should be 120vdc) found CR14809 had 76vdc on anode, leaky. Shutdown, pulsing. Found J14405 not seated properly, causing the xrp circuit to turn on . The 12 volt sense circuit vo
CTC211_sf_powersupply.pdfChassis Part Symbol Defective Circuit Symptom solution MMC102 CR14608 Power Supply When the power button was pressed the set didn't attempt to turn on (dead). The 5vsM10 supply on U13101(16,29) measured around 1 V dc. The supply diode CR14608 (5vs) on the standby supply the diode measured leaky. Replace CR14608 MMC101 FB14709/10 Power Supply intermittent high pitched squeal.FB14710, FB14709 , located on CR14703 by flyback under the fan. Glued them down. Found that moving them either made the unit quiet RTV FB14710, or made it squeal loudly. FB14709 Both tuners are not working. The 33 volt supply to the tuners is low.Found C25215 on the 33 volt line leaky. Measured 97 ohms to ground. Replaced the SMD cap. Picture too bright. Cathodes at 40vdc, 205vdc line at 75vdc. Found CR14701 shorted. dead set. All standby's are running low. Measuring the opto U14601 found no negative voltage present at pin 3. Checking CR14604, found it open MMC102 C25215 Power Supply Replace C25215. MMC
CTC211_sf_systemcontrol.pdfChassis Part Symbol Defective Circuit Symptom solution MMC102 G P13400 MMC102 G C13109 MMC101 CE C13110 Intermittently will not start. KD3 line to micro was low. Disconnect the front panel and Reinstall the short goes away. Found the FPA wiring harness pinched in the mask. Reinstalled wiring harness in System Control the wiring harness in its correct location and it has never had a startup problem since. its correct location System Control Dead, U13101 pin 50, 0 VDC, removed C13109 and VDC came back up to 5 volts replace C13109 Dead Set, No horizontal drive out of the deflection controller CBA. We found the control line to U13101-49 was measuring 39K to ground, should be 200k. Replaced System Control C13110 restored normal operation Replace C13110 with contrast set at normal, picture is too bright, with contrast set at middle, brightness would drop down, with contast set all the way down, picture too bright. reinit eeprom and it came back to normal operation No video or osd in 1h
CTC211_sf_tuner.pdfSymptom solution The tuners are not working. Video inputs are good.At U25501-4 , the 33Volts in is R14629,CR shorted. Found Cr14601 shorted and R14629 470 ohm increased in value. Replaced Replace Cr14601 MMC102A 14601 Tuning System both. and R14629 470 Video would slowly washout and go to black after two minutes of operation. Servicer noted that tapping on tuner caused video to flash. Inspection of tuner found loose MMC101 L32606, 7, & soldering at coils L32606, L32607, and L32608. Resoldering coils restored tuner and CE 8 Tuning System video operation. Resolder coils The unit did not have any tuning. On checking tuner found there was no 33 volts going to the tuner. Looking at the 33 volt power supply we found that r14629 was open and we Replace r14629 had 200 ohm to ground. Checking the tuner c25207 was broken and c25215 check c25215 and c25207. MM101 r14629 Tuning System short Chassis Part Symbol Defective Circuit DTV306G C Pip Tuner DTV306G C pip tuner No NTSC Tuner, replaced the
ctc211_sf_vertical.pdfChassis Part Symbol Defective Circuit Symptom MMC101 Diagonal lines both ways at top of picture. Bottom scan is good.Found CC CR14502 Vertical CR14502 opening under load solution Replace CR14502 MMC101 CR14511 Vertical Top half of picture missing, just lines, osd distorted. Had replaced horizontal sip board, no change, found CR14511 between pins 3 & 4 of U14501 shorted replace CR14511
CTC211_sf_video.pdfChassis Part Symbol Defective Circuit CTC211A R25305 Video Symptom solution CTC211A Q22413 DTV306 GCC Focus Screen Bl Parameter 6 Video Video DTV306 Video MMC102 A j25102 MMC102 U22300 Video Video no video or osd, found R25305 open on the green Kine board replace R25305 no video, no sandcastle from U22407, had horizontal pulse out of pin 15 but not back in on pin 10, found a bad connection at collector of Q22413. Resoldering restored sandcastle to U22300 and the video. resolder Q22413 replace the focus Flickering or fluttering in the video. The tech found that the focus screen assembly was / screen causing the problem, he had replaced the kine driver and the resistors in the abl circuit assembly. The raster has a slight black bar on the right side of the screen .Adjusted Parameter 6 Adjust Parameter slightly up. The unit will default to the 4X3 mode. We had to made the adjustment and 6 slightly up. then get back into the normal mode. At this point we checked all picture modes
Deflection_SIP_CBA_Confirmation_A2D7C1C0BF528A90E0339DFEEACC8A90_25.pdf10 MM/MMC/DTV Troubleshooting Guide Deflection SIP Board Confirmation 1. Obtain latest Chipper Check failure code and check circuit areas accordingly. IMPORTANT: DO NOT reinitialize the EEPROM! 2. If instrument is cycling, Standby & Main Supply are probably OK. If instrument is NOT cycling (dead), verify all Standby & Main Supplies before continuing. 3. Remove & secure CRT CBA. 4. Apply power and turn instrument on. 5. Check that SIP board power supplies are present at J14102 (+12V pin 16 / -15V pin 5). 6. Check for horizontal drive signal at pin 15 of J14102. 7. If the horizontal drive signal is present (step 6), the Deflection SIP board is operating. NOTE: If set is cycling, the waveform will cycle.
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MM101_Audio_A2D7B8F7C69ADA84E0339DFEEACCDA84_25.pdf216 Audio Audio IF From U32603-1 U13701 DeCoder Stereo Decoder 5 (R) 7 (L) U13702 10 8 U11402 3 1 5 7 L Aux 1 L Aux 2 L Aux 3 L-DVD Crtl A From SysCon Crtl B U13101-7/8/9 Crtl C (L) (R) (L) VGA #2 Audio IN (R) 11 10 9 12 15 R Aux 1 R Aux 2 R Aux 3 R-DVD U26101 3 (L/M) (R) N/C U11401 (L) 12 15 14 13 5 1 11 10 9 15 16 17 29 (L) 7 U11301 3 5 U11901 (L) 11 4 U11900 (L) 7 PwrAmp (R) 6 3 (R) (L) IIC IIC Dat Clk Head Phone (R) Jack 1 (L) Variable Out 30 27 (L) L Ext Spk R Ext Spk TVB U11800 (R) VGA #1 Audio IN 12 11 13 8 19 18 7 26 (R) U11902 (R) 1 11 3 3 U11301 (L) Fixed Out #1 (before SRS (R) & TVB) R L L R (L) (R) Sel. Stereo Out #2 (after SRS & TVB) PwrAmp 4 14 13 5 1 U11400 (R) FAV U11402 10 12 14 8 1 8 SRS Circuit 10 N/C Figure 15-1, Audio Switching/Processing Block Diagram Audio 217 Audio Switching & Processing Overview The audio input capabilities (see block diagram) of the MM101 include the normal NTSC off-air audio, three different Auxiliary inputs, a left & righ
MM101_CRT_A2D7B8F7C69EDA84E0339DFEEACCDA84_25.pdf192 CRT Management CRT Management Overview Controlling the beam with scan is one aspect of displaying a proper video on a CRT. Beam current must also be controlled in a defined fashion to provide video true to the original signal or to provide video closer to an "ideal" perception of the original signal. The MM101 uses several circuits after final video processing to properly set up the CRT to receive video data and peak CRT performance for the specific visual display. SVM (Scan Velocity Modulation) modulates scan to increase apparent contrast of high frequency luminance video. As with previous chassis' the MM101 employs an AKB (Automatic Kine Bias) system to track and compensate for the normal drift in beam current cutoff bias of a CRT. The MM101 uses a Dynamic Focus circuit to optimize the corner focus of CRTs larger than 27". Dynamic Focus modulates or varies the voltage to the CRT focus grids with a horizontal sawtooth and a vertical parabola signal. Scan Velocity Modulation Scan
MM101_FPIP_A2D95EE613A8C3CEE0339DFEEACCC3CE_25.pdf176 F2PIP / Second Tuner Second (PIP) Tuner The second tuner contained in the MM101 is used exclusively for PIP tuning functions. With one exception noted below, when broadcast programming is the source of both signals, the PIP and Main video is "swapped". The PIP tuner signal will only appear in the PIP window and main tuner signal will always be the main video. The two tuners are retuned to the required channels during the swap. When the same channel is displayed in PIP as is displayed in the Main display, the PIP window receives its signal from the Main tuner/IF. Further, the PIP tuner local oscillator (LO) is tuned to a frequency different from the normal range. This assures local oscillators from both tuners cannot concurrently add and complies with FCC Local Field Radiation requirements. The second tuner is identical to the CTC197 main tuner in topography and electrical operation. See the CTC195/197 Technical Training Manual (T-CTC195/197-1) for further information. RF to Main T
MM101_Hi_voltage_PS_A2D9706F72E0182CE0339DFEEACC182C_25.pdf106 Hi-Voltage Power Supply Overview In previous discussions, it was indicated high voltage must be maintained within more strict tolerances in the MM101 chassis. Independant High Voltage generation is utilized to assure high performance over the broad range of scan rates and beam currents for standard television, computer monitor modes and elevated-drive (video) VGA modes. The high voltage circuit is divided into several sections. The driver generates signal drive for the high voltage output device in the HV Generator. Protection for the generator and IHVT is provided by monitoring secondary current and removing gate drive to the output devices when necessary. The HV Generator supplies the CRT anode voltage and several supplies for CRT operation. The HVR B+ is the main supply for the high voltage generator. The HVR B+ circuit uses the +76Vr and +24Vr supplies to generate the higher voltages required for the HV generator. Varying Reg B+ regulates the output of the HV generator. By samp
MM101_Horizontal_Deflection_A2D7C1C0BF508A90E0339DFEEACC8A90_25.pdf74 Horizontal Deflection Horizontal Deflection Basics This discussion will only touch on horizontal, (right-left, left-right) deflection of the electron beam across the face of the CRT. Vertical, (up/down, down/up), deflection will be covered in a later section. The horizontal output transistor and damper diode in the MM101 supplies horizontal deflection yoke current. Since the MM101 contains a separate hi-voltage supply, the horizontal output does not carry the traditional dual role of supplying both yoke current and high voltage (beam current). Although there is only one horizontal yoke winding, it is wound in such a fashion that current in one direction drives the beam away from the center to the left side of the screen, while current in the opposite direction drives the beam away from the center to the right side of the screen. The amplitude of the current determines how far from the center the beam is deflected. Deflection is accomplished by forcing current through the deflection
MM101_Main_Power_Suppy_A2D95EE613B2C3CEE0339DFEEACCC3CE_25.pdf28 Main Power Supply Most ground connections on the MM101 series chassis are cold, ( ), indicating they are isolated from the AC line. However, there are many "Hot" connections, ( ), meaning direct connection to the AC line. The AC input and primary side of the main and standby supply circuitry are examples. The main power supply output device, Q14100, heatsink is at AC line potential! Always use an isolation transformer when performing service on this chassis and other chassis in this family! Main Power Supply Overview The MM101 uses a version of the same ZVS supply as seen in the standby supply circuits. Instead of using the flyback portion of the waveform, it uses the forward mode to generate secondary current. This means it provides energy to the secondary during the forward conduction interval of the output device as the induction fields (flux lines) are expanding instead of when they are contracting. Previously, inductors were required on each winding to sustain the flux flow, b
MM101_Scan_Generation_A2D9706F72E9182CE0339DFEEACC182C_25.pdf54 Low Level Scan Generation Scan Generator Overview The MM101 is capable of more scan modes than any previous TCE chassis. To accomplish deflection changes and scan signal generation necessary to facilitate all modes, a low level scan generator module is utilized. The scan control generator supplies all Low Level Control Signals (LLCS) to the horizontal and vertical scan generation circuits. It also generates all switching information for the different scan rates and is capable of shutting down scan during scan rate switching or in the event of deflection problems. The horizontal output circuits, after receiving the scan signals, then generate the high current for the horizontal yoke. The vertical output circuits, similiarly generate high current for the vertical yoke. In order to better follow signal paths, some definitions must be understood by the technician. The following list shows abbreviations used to identify the various sync, scan, protection and error signals in this manual
MM101_Scan_Power_Suppy_A2D7C1C0BF5C8A90E0339DFEEACC8A90_25.pdf46 Scan Power Supply Most ground connections on the MM101 series chassis are cold, ( ), indicating they are isolated from the AC line. However, there are many "Hot" connections, ( ), meaning direct connection to the AC line. The AC input and primary side of the main and standby supply circuitry are examples. Always use an isolation transformer and consult service data when performing service on this chassis and other chassis in this family! Scan Supply Overview In order to control raster width at different scan frequencies in the MM101, a separate power supply system is used to power the horizontal scan system. The system may be divided into several blocks (Refer to Figure 4-1). The first is the ZVS Scan Supply, used to supply B+ for horizontal scan frequencies 2H and above. It is turned off when the scan supply is set to 1H. Next is the Series Pass Scan Supply generating B+ used by horizontal scan for 1H frequencies. Both supplies are modulated to provide E-W pincushion, E-W corner co
MM101_Tuner_IF_A2DA612370D2758EE0339DFEEACC758E_25.pdf158 Tuner/IF Main Tuner Overview The MM101 tuner continues to employ TOB (Tuner On Board) topography with a zinc tuner wrap. It is a single conversion, electronically aligned tuner essentially identical to the CTC195/197 tuner. There will be two variations: 1) A single input tuner 2) A single input tuner with PIP RF output The second tuner is not based on the CTC 197 but is a "cold" version of the CTC 185 tuner. There are many similarities between the two. Refer to the Second Tuner/IF section of this manual for a further description of the circuitry. Changes made initially for the MM101 include use of a dedicated Tuner EEPROM (U32601) and Main IF DAC (Digital to Analog Converter) IC, U32602. The RF splitter is identical to the CTC197 splitter developed to improve main tuner performance while allowing an increase in signal level to the PIP tuner. The tuner can be separated into three distinct sections for discussion. First, the RF stage which processes the incoming antenna or cable RF s
MM101_USB_A2DA612370D5758EE0339DFEEACC758E_25.pdf146 Universal Serial Bus USB Overview Universal Serial Bus or USB, is the latest peripheral connection bus scheme from the computer manufacturers. Developed by a consortium of companies, USB promises faster data transfer, simplified hookup and easier setup of hardware devices. Data transfer speed may be misleading. As a comparison, Figure 10-1 shows relative bandwidth of the some data transfer methods. Note USB is slightly faster than a normal T1 communications line but not as fast as other internal computer bus structures, such as IDE and SCSI. The Universal Serial Bus resulted from an industry-wide initiative to standardize peripheral attachments to personal computers, and to improve the speed, performance and ease of use of any PC peripheral. PORT Serial P o rt ISDN Stand ard P arallel Po rt: T1 C o mmunicatio ns Line US B -Lo w EC P /EP P P arallel P o rt: IDE SC S I- 1 SC S I- 2 (F ast S C S I, F ast N arro w S C S I): US B -Hig h F ast Wid e S C S I (Wid e SC S I) Ultra S C S I
MM101_Vertical_Deflection_A2D7C1C0BF6E8A90E0339DFEEACC8A90_25.pdf92 Vertical Deflection Vertical Deflection Overview The vertical circuit in the MM101 is very similar to the CTC197 and the earlier CTC177/87 vertical circuits. Like earlier chassis, the output amplifier is DC coupled to the vertical yoke winding instead of using capacitive AC coupling. The input waveform from the deflection generator is also DC coupled. The DC coupled circuit has the advantages of fewer parts, lower cost and linearity becomes less dependent on electrolytic capacitor tolerance and aging. "S" correction, (the compression of the deflection current ramp at the beginning and end of scan), is accomplished from the deflection generator IC, U14350. Because of DC coupling, the DC level of the vertical reference ramp from U14350 pins 10&11 affects vertical centering. By moving the vertical ramp higher or lower around a DC current, vertical centering can be adjusted. This also compensates for variations in the reference ramp DC current. The MM101 uses a dual voltage power suppl
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MMC(G)_Sync_Scan_Gen-1_A2D9706F72EA182CE0339DFEEACC182C_25.pdfSync Processing and Scan Generation 23 Sync Processing Overview Sync processing was not covered in the original MM101 Manual due to time constraints. This discussion will begin with sync switching in the MM101, then progress to sync switching in the MMC101G/MMC102(G). There have been many refinements in this area from the early MM101. The MMC101G now incorporates 15 scan modes including one that can "adapt" itself to nearby frequencies both horizontally or vertically. Three of the programmed modes are currently not used leaving a total of 12 available scan modes. Horizontal scan rates for 1H (15.734kHz) may vary between 14.5kHz and 16.3kHz. For 2.xH they may vary from 29kHz to 39.3kHz. Horizontal sync may be either positive or negative at TTL levels. Vertical scan rates may vary from 48Hz to 89Hz for the MMC101 but are limited to 60Hz for the projection instrument MMC102(G). Vertical sync may be either positive or negative at TTL levels. Adaptive Scan Mode The adaptive scan mode all
MMC(G)_Syscon-1_A2D95EE613C1C3CEE0339DFEEACCC3CE_25.pdf16 System Control System Control The discussion of System Control for the MMC101G/MMC102(G) will center on differences with the original MM101 chassis. For more in-depth information consult the original MM101 Technical Training Manual, T-MM101-1. System Control 17 Service Menu The MMC101G/MMC102(G) chassis continues to provide fewer adjustments via the front panel. Figure 3-3 show the current available adjustments and their normal ranges. Most deal with geometry and color temperature adjustments required after picture tube replacement or to satisfy consumer requirements. All other alignments and adjustments must be performed using Chipper CheckTM, TCE's computer-based troubleshooting and alignment software. To enter the service menu with the instrument on, press and hold the MENU button. Then press and release the POWER button. Now press the VOLUME+ button, releasing both it and the MENU button at the same time. The on-screen display will now appear similar to Figure 3-2. The rema
Scan_Loss_Detect_Overview_A2D7C1C0BF618A90E0339DFEEACC8A90_25.pdf14 MM/MMC/DTV Troubleshooting Guide Temporarily unsolder JW902, if set operates check XRP circuits & +12V Sense Line (see NOTE below) B A HV Sample (from T700-7) XRP JW902 H_Pulse_B from T451-14 (Horz Flyback Pulse) +12V Sense Active Lo Remove Deflection SIP CBA & short B-E of Q24105. Reinstall CBA. If set runs, check Horz Drv & Horz Output. If set doesn't run, unsolder pin 18 of J14102. If set runs after unsoldering pin 18, suspect Q24105. If set still doesn't run go to next step. +12Vr R844 Scan Loss (1) Q24105 5 3 Scan Loss SysCon Micro U13101 R13130 Scan Loss (2) Fan Detect Q813 14 Pwr Fail CR902 CR24100 Q24103 Switch Horz Scan Loss Detect Normal = Horz WF +8Vr H Drive V Drive 1 Lo Level 20 Horz/Vert 10/11 Gen U350 CR803 51V CR805 36V C 2H Scan B+ Gen Q800 Scan_H_A from T451-8 (Horz Flyback Pulse) Short B-E, if set operates check 2H Scan B+ Gen circuits or Horz over drive. If set doesn't run, check Q813. CR807 NOTE: All components & TP's are 14000 series unless other
TFC-04047_CTC211_Audio_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04047 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Audio Troubleshooting SYMPTOM: No or Distorted Audio 1 1A Select a channel. Is there audio signals present at J16511 (in-out board) on pins 4 and 7? No Verify the DM 1 power supply voltages. If these test ok, suspect the DM 1 module. Yes Table 1 2 Inputs on U11401 U11400 (R) (L) and 2B Pins on U11400/401 Tuner Vid 1 Vid 2 Vid 3 Fav YUV 12 15 14 13 1 5 Check for audio input signals at U11400 and U11401. Use Table 1 on the left to locate which pin. Are these signals present? No If tuner or Fav audio is missing, check VCC (12vdc) U11402 pin 4. If this is present, check output on pins 1 and 7 of U11402. If the signal is missing, suspect U11402. If the input si
TFC-04048_CTC211_Dead_Set_Circuit_Level_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04048 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Dead Set Circuit Level Troubleshooting SYMPTOM: Dead Set Apply AC to the unit. 1 1A Press the power button on the front of the unit. Does the power LED come on? No Go to the System Control Circuit Level Troubleshooting Flowchart TFC-04055. Yes 2 2A Check for the VCC voltage on pins 5 and 16 of U13101. Is the voltage present? No Go to the Standby Power Supply Troubleshooting Flowchart TFC-04053. Yes Go to Page 2 Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning e
TFC-04049_CTC211_High_Voltage_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04049 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: High Voltage Troubleshooting SYMPTOM: No High Voltage Warning! To perform the troubleshooting in this flowchart, it may be necessary to defeat a safety circuit (scan loss). Make sure the CRT (s) are disconnected before attempting this procedure. Remember to restore all connections or components to normal condition before returning to the customer. Place a short between base and emitter of Q14105. This will force on the run power supply and high voltage circuitry when AC is supplied. 1 Missing Is the high voltage missing or low? Low 2A 2B Check R14715, R14721, or U14104. If these test good, go to Run Power Supply troubleshooting TFC03112. 2C Locate U14711 an
TFC-04050_CTC211_Horizontal_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04050 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Horizontal Circuit Troubleshooting SYMPTOM: No Horizontal Deflection Apply AC to the unit. Warning! To perform the troubleshooting in this flowchart, it will be necessary to defeat a safety circuit (scan loss). Make sure the CRT kine board (s) are disconnected before attempting this procedure. Remember to restore all connections or components to normal condition before returning to the customer. Disconnect pin 18 of J14102 1 1A Press Power button and check pin 15 of J14102 for 12 vpp horizontal drive pulse. Check pins 12 & 14 for clock & data and pin 16 for 12 vdc. If present suspect the Deflection Sip Board NO Y E S 2 2A Check 12 volt sense Q14706 and xray prot
TFC-04051_CTC211_Scan_Loss_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04051 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Scan Loss Troubleshooting SYMPTOM: No Video - Pulsing Warning! To perform the troubleshooting in this flowchart, it will be necessary to defeat a safety circuit (scan loss). Make sure the CRT (s) are disconnected before attempting this procedure. Remember to restore all connections or components to normal condition before returning to the customer. Short Q14105 between base and emitter. Apply AC. This should force on the run power supply. 1 1A Are the Chassis fans running? No Troubleshoot the Run Power Supply. Yes Go to page two Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis
TFC-04052_CTC211_Shutdown-Cycles_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04052 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Shutdown-Cycles Three Times SYMPTOM: Pulsing Three Times Apply AC to the unit. Verify Standby Power Supply is operational. Warning! To perform the troubleshooting in this flowchart, it will be necessary to defeat a safety circuit (scan loss). Make sure the CRT (s) are disconnected before attempting this procedure. Remember to restore all connections or components to normal condition before returning to the customer. 1 1A Locate Q14105 (23i) on the main chassis and short between Base and Emitter. Are the Cooling fans operational? N o Troubleshoot the Run Power Supply. Yes Go to Page 2 Product Safety Information Product Safety information is contained in the
TFC-04053_CTC211_Standby_power_Supply_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04053 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Standby Power Supply Troubleshooting SYMPTOM: Dead Set 1 1A Suspect CR14611, CR14602 and R14602. Also check R14604, Q14602, Q14601, R14602, CR14613 and CR14615 Is 14601 shorted? Y e s No 2 2A Unsolder the drain of Q14601. Check the gate. Is it at 12Vdc? Y e s Suspect Q14601 No 3 3A Unsolder the gate of Q14601. Check the voltage on the trace of the gate. Is it at 12Vdc? Y e s Suspect Q14601 or R14604 No Page 2 Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning eq
TFC-04054_CTC211_S-Video_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04054 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: S-Video Troubleshooting SYMPTOM: No S-Video 1 1A Check for Luma/Chroma input at pins 5 and 6 of U16500. If missing, check the input jack J16502, C16504, and C16517. If the signals are present at pins 5 and 6 of U16500, Verify data and clock (pins 2 and 4) and check VCC at pin 9. If all these test ok, reinitialize U13102 or replace U16500. Place a S-Video source into S-Vid 1. Is there Luma (pin 18) and Chroma (pin 17) present on U16500? No Yes 2 2a Are the S-video signals (luma at pin 3 and chroma at pin 5) present on U18100? No Check the coupling capacitors C18110 and C18111. If the signal is missing, check the buffer transistors Q16500 and Q16504. Yes Go
TFC-04055_CTC211_System_Control_Circuit_Level_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04055 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: System Control Circuit Level Troubleshooting SYMPTOM: Dead Set - Pulsing 1 1A Apply AC to unit, is pin 4 of U13101 on the I/O board 4.8 VDC? NO Go to Standby Power supply troubleshooting flowchart T F C - 0 4 0 5 3 YES 2 2A Press power button, does the green power LED light? NO Go to System Control Circuit Level Troubleshooting flowchart TFC-04055 YES 3 3A Go to Systems Control component level troubleshooting flowchart TFC-04056 Does pin 4 of U13101 located on the I/O board go low? NO YES go to page 2 Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All
TFC-04056_CTC211_System_Control_Component_Level_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04056 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: System Control Component Level Troubleshooting SYMPTOM: Dead Set - Pulsing Press power button, green LED is lit & main board standby power supply is operational 1 1A Is there 5 vdc at pin 51 of U13101 NO Check reset circuit Q13107 and Q13106 YES 2A Check pins 40 & 42 for 5 vpp osc. 8 mhz Suspect Y13101, C13106, C13107 2 NO YES 3A Check pin 5 for 5.2 VDC NO Suspect Power fail circuit Q14607 & Q14608 3 YES go to page 2 Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to return
TFC-04057_CTC211_Tuner_Video_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04057 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Tuner Signal Troubleshooting SYMPTOM: No Tuner Video 1 1A Is tuner video present at pin 1 or video input present at pins 5, 6 or 8 of U16501 (depending upon input selected)? No Check U32603 (tuner video) at pin 21 for video signal. If tuner video is missing, check the tuner and associated components. If the video inputs are missing, check the jack inputs at J16501, J16502, and J16503. Yes 2 2A Suspect U16501,compressed Data/Clock lines at pins 2 and 4 of U16501. If all these test good, reinitialize U13102 or suspect U16501. Tuner or input video will be output from pin 15 of U16501. Is this signal present? No Yes Go to Page 2 Product Safety Information Pr
TFC-04058_CTC211_Vertical_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04058 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Vertical Troubleshooting SYMPTOM: No Vertical Warning! To perform the troubleshooting in this flowchart, it may be necessary to defeat a safety circuit (scan loss). Make sure the CRT (s) are disconnected before attempting this procedure. Remember to restore all connections or components to normal condition before returning to the customer. Place a short between base and emitter of Q14105. This will force on the run power supply when ac is supplied. 1 1A Is the 12VDC run present at pin 16 of J14102? N o Check U14104 or troubleshoot the Run Power Supply. Yes Go to Page 2 Product Safety Information Product Safety information is contained in the appropriate Tho
TFC-04059_CTC211_VGA_Video_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04059 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: VGA Video Troubleshooting SYMPTOM: No VGA Video 1 1A Check connectorr J38200 and Inputs on pins 6, 7, or 8 of U38200. Check switching at pins 9, 10, and 11 of U38200 (high for VGA) . If all these test OK, Try reinitializing the EEprom or suspect U38200. Are the YUV signals present at pins 13, 14, and 15 of U38200? N o Y e s 2 Are the YUV signals present at pins 14 (Y), 15 (U), and 13 (V) on U22401 2A Check for correct switching at pins 10 on U22401 (low for internal signal). I f the switching is correct, suspect U22401. N o Y e s Go to Page 2 Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering
TFC-04060_CTC211_Input_Video_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04060 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: Input Video Troubleshooting SYMPTOM: No Input Video 1 1A Place a video input signal on VID 1 jack J16502. Is the video signal present at pin 6 of U 1 6 5 0 1 ? N o Check the Jack J16502, coupling capacitor C16503, or diode CR16502. If these test good, check for open trace between C16502 and pin 6 of U16501. Y e s 2 2A Check for 9vdc at pin 9 of U16501. Check Data and Clock lines at pins 2 and 4 of U16501. If all these test ok, reinitialize the EEprom or suspect U16501. Is there a video signal present at Pin 15 of U 1 6 5 0 1 ? N o Y e s Check the frame comb circuit at pin 6 and 8 of J16500. If these signals are missing, reinitalize the EEprom or suspect th
TFC-04061_CTC211_YPrPb_Video_Troubleshooting.pdfTHOMSON TECHNICAL COMMUNICATION Television Troubleshooting Flow Chart TFC-04061 The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. REVISION DATE: Chassis: CTC211 9/23/2004 TOPIC: YPrPb Signal Troubleshooting SYMPTOM: No YPrPb Video 1 1A Is the 1H/2H YPrPb signals present at U22402, pins 2, 5, and 12? No Check the input jack J22401 for connection problems and zener diodes CR22401, CR22402, and CR22403 for shorted state. Also check coupling capacitors C22402, C22403, and C22404. Yes 2 2A Check the VCC at pin 16 (9vdc) and check the logic switching at pins 9, 10, and 11 of U22402 (should be low in 1H YPrPb mode) . If the voltage is high, reinitialize the eeprom with Chipper Check. If all voltages check ok, suspect U22402. Is the 1H/2H YPrPb signals present at pins 4, 14, and 15 of U22402? No Yes Go to Page 2 Product Safety Informati
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ttt05-005.pdfTHOMSON TECHNICAL COMMUNICATION HD Television TechLine Troubleshooting Tip TTT 05-005 The information contained herein is provided solely to assist in the diagnosis of the problem described. It is not intended as a modification or alteration of the product. DATE: 10/25/2005 CHASSIS-MODEL: MMC101/102, CTC210/211, AND DTV306/307 TOPIC: X-ray Protect Components XRP KITS - SEE CHART BELOW IMPORTANT : Replacement of any failed component supplied within the XPR kit requires the replacement of ALL supplied kit parts. This is required to insure proper operation or the XPR circuitry. DO NOT replace individual parts supplied within this kit under any circumstances. 1. Install ALL supplied parts in the chassis (CR14900 Diode S/N 159429 is in all kits, see chart below for the values included in the kit you ordered to replace R14901,R14902, R14904, Q14901). 2. Conduct the XPR shutdown test as described in the Service Manual to verify proper XPR. Operation. CHASSIS MMC101CC/CE MM101GBE MM101GCE
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