Text preview for : Roadstar.(Amstrad).Chassis.VE01.pdf part of Roadstar 1450-2050-2150KT, Amstrad TV14M3 CRT TV Chassis VE01, VE02. Ñïîðåä ìîäåëà ìîæå äà èìà ðàçëèêà â Í×Ó - â 14" ñå ïîñòàâÿ íàé-÷åñòî AN17823
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COLOR TELEVISION
SERVICE MANUAL CHASSIS: - VE01
MODEL NO: - 1450KT, 2050KT, 2150KT
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CONTENTS
Safety Precautions-----------------------------------------------------------------------Introduction----------------------------------------------------------------------------------1. SCART details-----------------------------------------------------------------------------2. Micro-Controller and Small Signal function 4. Video Switch TDA9351.-----------------------3. Tuner-----------------------------------------------------------------------------------------HEF4052BP-----------------------------------------------------------5. Sound Processor - TDA9859--------------------------------------------------------6. Sound Output - AN17821-------------------------------------------------------------7. Vertical Output Stage STV9302A-------------------------------------------------8. Video Output Amplifier ------------------------------------------------------------------9. Power Supply------------------------------------------------------------------------------10. Memory IC AT24C16---------------------------------------------------------------3 3 4 5-8 9 10 10 10 10 11 11 11 12 12-18 18-19 19-20 20-21 21-23 24 24-25 25-26 26 26 26 27 27 27-31 32-42 43 44 45
11. IC Description with Pin Details----------------------------------------------------11A. TDA9351------------------------------------------------------------------------11B. HEF4052BP--------------------------------------------------------------------11C. STV9302A----------------------------------------------------------------------11D. IC AT24C16--------------------------------------------------------------------11E. TDA9859------------------------------------------------------------------------11F. AN17821-------------------------------------------------------------------------11G.STR5Q0765----------------------------------------------------------------------11H. Video Amplifier Transistors--------------------------------------------------12. Alignment Procedures-----------------------------------------------------------------12.A. Procedure to enter Service Mode-----------------------------------------12.B. Procedure to enter Design Mode------------------------------------------12.C. White Balance Adjustment--------------------------------------------------12.D. Screen Adjustment------------------------------------------------------------12.E. Design and Service data adjustment-------------------------------------12.F. Manufacturing and alignment procedures-------------------------------13. 14. 15. Block Diagram-------------------------------------------------------------------------Circuit Diagram------------------------------------------------------------------------Track Side Layout--------------------------------------------------------------------2
SAFETY PRECAUTIONS
· · · · · · · · · · Do not change any module unless the set is switched off. The mains supply side of the SMPS transformer is live. Use an isolating transformer Servicing of the CTV set should only be carried out by qualified person. Components marked with warning symbol on circuit diagram are critical for safety and must only be replaced with an identical component Power resistor and fusable resistors must be mounted in an identical manner to the original component. Discharge the capacitors like Main Filter when working on these. Do not solder when the set is on. Do not connect any external device like Speakers etc. when the set is on. When any signals are to be connected/ disconnected switch off the set. Wear rubber shoes/non-conducting so that your body does not become a passage for electric current.
INTRODUCTION:VE01 chassis is capable of driving 14", 20", 21", 21"PF tubes at appropriate currents. This chassis is capable of working in the PAL / SECAM / NTSC systems. The sound system is capable of giving 1.5W r.m.s. output into a load 8E speaker. One page simple TELETEXT, TOPTEXT and FASTEXT is provided. The chassis is equipped with 21 pin scart connector which can accept via scart the SVHS format from VCRs. The details of various sections with IC details and pin voltages are covered in this manual. The alignment procedure in field and also at manufacturing line is also covered in detail. The block diagram, circuit diagram and track side layout of VE01 chassis is also attached in this manual for easy reference.
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1. PERI- TV SOCKET (SCART)
PIN DETAILS OF SCART
Pin 1 2 3 4 5 6 7 8 9
Name AOR AIR AOL AGND B GND AIL B SWTCH G GND
Description Audio Out Right Audio In Right Audio Out Left + Mono Audio Ground RGB Blue Ground Audio In Left + Mono RGB Blue In Audio/RGB switch / 16:9 RGB Green Ground Data 2: Clockpulse Out RGB Green In Data 1: Data Out RGB Red Ground RGB Red In / Chrominance Blanking Signal Composite Video Ground Composite Video Out Composite Video In / Luminance Ground/Shield (Chassis) 1V 1V Unavailable 0.7 V Unavailable 0.5 V rms 0.7 V 0.5 V rms 0.5 V rms 0.5 V rms
Signal Level
Impedance <1k ohm >10k ohm <1k ohm
>10k ohm 75 ohm
0-2 V=TV, 5-8 V=WideScreen, 9.5-12 >10 kohm V=AV Mode
10 CLKOUT 11 G 12 DATA 13 R GND
75 ohm
14 DATAGND Data Ground 15 R 16 BLNK 17 VGND 19 VOUT 20 VIN 21 SHIELD 0.7 V (Chroma.: 0.3 V burst) 1-3 V=RGB, 0-0.4 V=Composite 75 ohm 75 ohm
18 BLNKGND Blanking Signal Ground 75 ohm 75 ohm
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2. MICRO CONTROLLER AND SMALL SIGNAL FUNCTION WITH TDA 9351:- This IC is a combination of microcontroller and chroma (Small Signal function). This IC performs all important functions in TV receiver. The details of IC are bifurcated in two parts. Small Signal function and microcontroller
2A:- SMALL SIGNAL FUNCTION:
2A.1: VISION IF AMPLIFIER: The vision IF amplifier can demodulate signals with positive and negative modulation. The PLL demodulator is completely alignment-free. The VCO of the PLL circuit is internal, and the frequency is fixed to the required value by using the clock frequency of the Controller/ Teletext decoder as a reference. The setting of the various frequencies (38, 38.9, 45.75 and 58.75 MHz) can be made via the control bits IFA-IFC in sub address 27H. Because of the internal VCO, the IF circuit has a high immunity to EMC interferences. 2A.2: VIDEO SWITCHES: The video switch has one input for an external CVBS or Y/C signal. The selected CVBS signal can be supplied to pin 38, the IF video output. The selection between both signals is realized by means of the SVO bit in sub address 22H. The video ident circuit can be connected to the incoming `internal' video signal or to the selected signal. This ident circuit is independent of the synchronisation and can be used to switch the time-constant of the horizontal PLL depending on the presence of a video signal (via the VID bit). Because of the availability of the Y/C input and the subcarrier output an external comb-filter can be applied. In that case an external video switch (or comb-filter with integrated switch) must be used. The subcarrier output is combined with a 3-level output switch (0 V, 4 V and 8 V). The output level and the availability of the subcarrier signal is controlled by the CMB1 and CMB0 bits. The output can be used to switch sound traps etc.
2A.3: SOUND CIRCUIT (QSS VERSION) The sound IF amplifier is similar to the vision IF amplifier and has an external AGC decoupling capacitor. The single reference QSS mixer is realised by a multiplier. In this multiplier the SIF signal is converted to the intercarrier frequency by mixing it with the regenerated picture carrier from the VCO. The mixer output signal is supplied to the output via a high-pass filter for
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attenuation of the residual video signals. With this system a high performance hi-fi stereo sound processing can be achieved. The AM sound demodulator is realised by a multiplier. The modulated sound IF signal is multiplied in phase with the limited SIF signal. The demodulator output signal is supplied to the output via a low-pass filter for attenuation of the carrier harmonics. The AM signal is supplied to the output (pin 44) via the volume control. It is possible to get the AM output signal (not controlled on amplitude) on the QSS intercarrier output. The selection is made by means of the AM bit in subaddress 29H. Another possibility is that pin 35 is transferred to external audio input pin and pin 32 to (non-controlled) AM output pin. This can be realised by means of the setting the control bits CMB0 and CMB1 in subaddress 22H. 2A.4: FM DEMODULATOR AND AUDIO AMPLIFIER (MONO VERSIONS):- The FM demodulator is realised as narrow-band PLL with external loop filter, which provides the necessary selectivity without using an external band-pass filter. To obtain a good selectivity a linear phase detector and constant input signal amplitude are required. For this reason the intercarrier signal is internally supplied to the demodulator via a gain controlled amplifier and AGC circuit. The nominal frequency of the demodulator is tuned to the required frequency (4.5/5.5/6.0/6.5 MHz) by means of a calibration circuit which uses the clock frequency of the Controller/Teletext decoder as a reference. The setting to the wanted frequency is realised by means of the control bits FMA and FMB in control byte 29H. When required an external sound band-pass filter can be inserted in front of the narrow-band PLL. In that case pin 32 has to be switched to sound IF input by means of the bits SIF (subaddress 21H) and CMB0/CMB1 (subaddress 22H). When the sound IF input is selected the subcarrier output or AVL function are not available. From the output status bytes it can be read whether the PLL frequency is inside or outside the window and whether the PLL is in lock or not. With this information it is possible to make an automatic search system for the incoming sound frequency. This can be realised by means of a software loop which switches the demodulator to the various frequencies and then select the frequency on which a lock condition has been found. The deemphasis output signal amplitude is independent of the TV standard and has the same value for a frequency deviation of 25 kHz at the 4.5 MHz standard and for a deviation of 50 Khz for the other standards. The audio control circuit contains an audio switch and volume control. In the mono intercarrier sound versions, the Automatic Volume Levelling (AVL) function can be activated. The pin to which the external capacitor has to be connected depends on the IC version. For the 90 degree types the capacitor is connected to the EW output pin (pin 20). For
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the 110 degree types a choice must be made between the AVL function and a sub-carrier output for comb filter applications. This choice is made via the CBM0 and CMB1bits (in subaddress 22H). When the AVL is active it automatically stabilises the audio output signal to a certain level. The signal on the deemphasis pin (28) can be supplied to the SCART connector via a buffer stage. It is also possible to use this pin as additional audio input. In that case the internal signal must, of course, be switched off. This can be realised by means of the sound mute bit (SM in subaddress 29H). When the IF circuit is switched to positive modulation the internal signal on the deemphasis pin is automatically muted. The audio switch is controlled by means of the INA/INB bits in subaddress 22H. It is, however, also possible to overrule the audio switch position by means of the ADS and ADX bits (subaddresses 28H and 21H respectively). 2A.5: SYNCHRONISATION CIRCUIT :- The IC contains separator circuits for the horizontal and vertical sync pulses and a data-slicing circuit which extracts the digital teletext data from the analog signal. The horizontal drive signal is obtained from an internal VCO which is running at a frequency of 25 MHz. This oscillator is stabilised to this frequency by using a 12 MHz signal coming from the reference oscillator of the micro controller/Teletext decoder. The horizontal drive is switched on and off via the soft start/stop procedure. This function is realised by means of variation of the T ON of the horizontal drive pulses. In addition the horizontal drive circuit has a `low-power start-up' function. The vertical synchronisation is realised by means of a divider circuit. The vertical ramp generator needs an external resistor and capacitor. For the vertical drive a differential output current is available. The outputs must be DC coupled to the vertical output stage. In the types which are intended for 90 degree picture tubes the following geometry parameters can be adjusted: · · · · · Horizontal shift Vertical amplitude Vertical slope S-correction Vertical shift
The types which are intended to be used in combination with 110 degree picture tubes have an East-West control circuit in stead of the AVL function.
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The additional controls for these types are: · · · · · EW width EW parabola width EW upper and lower corner parabola correction EW trapezium correction Vertical zoom
2A.6: CHROMA AND LUMINANCE PROCESSING: - The chroma band-pass and trap circuits (including the SECAM cloche filter) are realised by means of gyrators and are tuned to the right frequency by comparing the tuning frequency with the reference frequency of the colour decoder. The luminance delay line and the delay cells for the peaking circuit are also realised with gyrators. The circuit contains a black stretcher function which corrects the black level for incoming signals which have a difference between the black level and the blanking level. 2A.7: COLOUR DECODER :- The IC can decode PAL, NTSC and SECAM signals. The PAL/NTSC decoder does not need external reference crystals but has an internal clock generator which is stabilised to the required frequency by using the 12 MHz clock signal from the reference oscillator of the micro controller/Teletext decoder. Under bad-signal conditions (e.g. VCR-playback in feature mode), it may occur that the colour killer is activated although the colour PLL is still in lock. When this killing action is not wanted it is possible to overrule the colour killer by forcing the colour decoder to the required standard and to activate the FCO-bit (Forced Colour On) in subaddress 21H. The Automatic Colour Limiting (ACL) circuit (switchable via the ACL bit in subaddress 20H) prevents that over saturation occurs when signals with a high chroma-to-burst ratio are received. The ACL circuit is designed such that it only reduces the chroma signal and not the burst signal. This has the advantage that the colour sensitivity is not affected by this function. The SECAM decoder contains an auto-calibrating PLL demodulator which has two references, viz: the divided 12 MHz reference frequency (obtained from the microcontroller) which is used to tune the PLL to the desired free-running frequency and the bandgap reference to obtain the correct absolute value of the output signal. The VCO of the PLL is calibrated during each vertical blanking period, when the IC is in search or SECAM mode. The base-band delay line (TDA 4665 function) is integrated. This delay line
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is also active during NTSC to obtain a good suppression of cross colour effects. The demodulated colour difference signals are internally supplied to the delay line. 2A.8: RGB OUTPUT CIRCUIT AND BLACK-CURRENT STABILIZATION : In the RGB control circuit the signal is controlled on contrast, brightness and saturation. The ICs have a linear input for external RGB signals. It is possible to use this input for the insertion of YUV signals. Switching between RGB and YUV can be realised via the YUV-bit in subaddress 2BH. The signals for OSD and text are internally supplied to the control circuit. The output signal has an amplitude of about 2 Volts black-to-white at nominal input signals and nominal settings of the various controls. To obtain an accurate biasing of the picture tube the `Continuous Cathode Calibration' system has been included in these ICs. A black level offset can be made with respect to the level which is generated by the black current stabilization system. In this way different colour temperatures can be obtained for the bright and the dark part of the picture. The black current stabilization system checks the output level of the 3 channels and indicates whether the black level of the highest output is in a certain window (WBC-bit) or below or above this window (HBC-bit). This indication can be read from the status byte 01 and can be used for automatic adjustment of the Vg2 voltage during the production of the TV receiver. During switch-off of the TV receiver a fixed beam current is generated by the black current control circuit. This current ensures that the picture tube capacitance is discharged. During the switch-off period the vertical deflection is placed in an overscan position so that the discharge is not visible on the screen. 2B. - MICROCONTROLLER WITH TELETEX DECODER: - The integrated teletex decoder with embedded microcontroller is a control system designed for TV sets with analogue picture and sound control. The system also offers an on screen display (OSD) and IR remote control of all functions. 3. TUNER: - GDC Tuner EWT 5F3T1 is controlled by I2C bus through IC TDA 9361.The tuning is based on frequency synthesis tunning.
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CHANNEL COVERAGE : BAND OFF AIR CHANELS CHANEL RANGE LOW BAND MID BAND HIGH BAND E2- S9 S10 S41 E21 E69 FREQUENCY ( IN MHZ) 48.25 161.25 168.25 463.25 471.25 855.25
4. VIDEO SWITCH BU 4052: The HEF4052 is a dual four channel analog multiplexer. The main function of this device is to accept an AV input from SCART, external AV and switch the required output at pin no Z which is applied to small signal processing IC. 5. SOUND PROCESSOR: TDA 9859 is designed to perform demodulation of FM TV sound. The TDA 9859 selects signal from Three Stereo Sources or Six Mono Sources and out put can be given to scart. The sound processor is I2C bus controlled and all settings of bus are stored in sub address register. 6. SOUND OUTPUT: - IC AN17821 is used as the AF out amplifier for the Stereo application. It is supplied by 13 volts from the 13 volt DC coming from a separate winding in the SMPS transformer. An out power of 1.5 Watt can be delivered into an 8 Ohm Load. This IC is also having a feature of auto volume controller. Similarly stand by signal coming from microcontroller is used to disable the sound out put from speaker. 7. VERTICLE OUTPUT STAGE:- The STV 9302 is a vertical deflection circuit can be used for 90 degree and 110 degree deflection systems . One supply voltage for the scan is required. The drive voltage is amplified by an amplifier. The supply voltage of this IC is 15 Volts. 8. VIDEO OUTPUT AMPLIFIER: The RBG output signal from TDA 9351 is applied to video output amplifier section. IC TDA6107 or transistorized circuit can be used for video signal amplification and to be applied to cathodes of CRT for generation of R, G, and B colors. If IC
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is used, then internal amplifiers are used to amplify the video signal. The transistorized amplifier can be designed by using transistor circuit in which 9 transistors are used. Chassis VE01 consist of transistorized video amplifier circuit. 9. POWER SUPPLY: The DC Voltages required at various part of the chassis are applied by SMPS transformer controlled by STR 0765, which is designed for deriving, controlling and protecting switiching transistor of SMPS. The transformer produces 110 volts for FBT, 13 Volt for audio O/p IC, 33 Volts for tuner and 5 and 8 Volts regulated voltages through IC TA7805 and TA7808. 10. MEMORY IC : The 24C16 is a 16 Kilo Bit electrically erasable programmable memory. EEPROM organized as 128 pages X 16 bytes. This is compatible with I2C standards, two wire serial interface which uses a bi directional data bus and serial clock.
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11. IC DISCRIPTION AND PIN DETAILS · · · · · · · · TDA 9351 STV 930224C16TDA 9859AN 17821KA 5Q0765TV Signal processor- Teletex decoder with embedded microcontroller Video Switch Vertical Deflection Output Sound Processor Sound Output STR HEF 4052BP-
Memory IC
Video amplifier.
11A. TDA 9351:- This IC is the functions of a TV signal processor together with a microcontroller and US Closed Caption decoder. The IC is used in television receivers with 90degree and 110 degree picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in S-DIP envelope with 64 pins. This IC is having higher degree of integration because delay line with adjustable delay time, PAL / SECAM / NTSC decoder has been integrated. In addition to this some special features like Continuous Cathode Calibration', white point and black level offset, AVL are added in this version. As this is a combination of microcontroller and TV signal processor, the features of IC are divided in two sections
TV Signal processor Important Features · · · Internal (switchable) time-constant for the IF-AGC circuit. A choice can be made between versions with mono intercarrier sound FM demodulator and versions with QSS IF amplifier. The mono intercarrier sound versions have a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz).The quality of this system is such that the external band-pass filters can be omitted. · · · · · Source selection between `internal' CVBS and external CVBS or Y/C signals Integrated chrominance trap circuit Integrated luminance delay line with adjustable delay time Asymmetrical `delay line type' peaking in the luminance channel Black stretching for non-standard luminance signals
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· · · · ·
Integrated chroma band-pass filter with switchable centre frequency Only one reference (12 MHz) crystal required for the microcontroller, Teletext- and the colour decoder PAL/NTSC or multi-standard colour decoder with automatic search system Internal base-band delay line RGB control circuit with `Continuous Cathode Calibration', white point and black level offset adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently.
· · · · · · · ·
Linear RGB or YUV input with fast blanking for external RGB/YUV sources. The Text/OSD signals are internally supplied from the microcontroller/Teletext decoder Contrast reduction possibility during mixed-mode of OSD and Text signals Horizontal synchronization with two control loops and alignment-free horizontal oscillator Vertical count-down circuit Vertical driver optimized for DC-coupled vertical output stages Horizontal and vertical geometry processing Horizontal and vertical zoom function for 16 : 9 applications Horizontal parallelogram and bow correction for large screen picture tubes
Special Features of micro Controller · · · · · · · · · · · 80C51 microcontroller core standard instruction set and timing 1 microsecond machine cycle 32 - 128Kx8-bit late programmed ROM 3 - 12Kx8-bit Auxiliary RAM (shared with Display and Acquisition) Auxiliary RAM page pointer 16-bit Data pointer IDLE and Power Down (PD) mode 14 bits PWM for Voltage Synthesis Tuning 8-bit A/D converter 4 pins which can be programmed as general I/O pin, ADC input or PWM (6-bit) output Text memory for 1 or 10 pages
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· · · · · · · · · ·
In the 10 page versions inventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT) Data Capture for 525/625 line WST, VPS (PDC system A) and Wide Screen Signalling (WSS) bit decoding Automatic selection between 525 WST/625 WST Automatic selection between 625 WST/VPS on line 16 of VBI Real-time capture and decoding for WST Teletext in Hardware, to enable optimized processor throughput Automatic detection of FASTEXT transmission Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters Signal quality detector for video and WST/VPS data types Comprehensive teletext language coverage Full Field and Vertical Blanking Interval (VBI) data capture of WST data -
Display Features · · · · · · · · · · · Teletext and Enhanced OSD modes Single/Double/Quadruple Width and Height for characters Scrolling of display region Variable flash rate controlled by software Enhanced display features including over lining, underlining and italics Soft colours using CLUT with 4096 colour palette Globally selectable scan lines per row (9/10/13/16) and character matrix [12x10, 12x13, 12x16 (VxH)] Fringing (Shadow) selectable from N-S-E-W direction Fringe colour selectable Meshing of defined area 32 software redefinable On-Screen display characters
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PINNING: TDA 9351 Pin No 1. Stand By 2. SCL 3. SDA 4.TUNING 5. NTSC SW / AC TEST 6. KEY 7. VOL1 8. MUTE 9. Vss C/P 10. BAND1 11. BAND2 12. Vss A Description Stand by Clock Signal Output Data Out put Tunning ( Not connected) NTSC switch , AC Test Key Input ( Pannel ) Volume Mute Digital Ground for microcontroller Band 1 (not connected) Band 2 ( Not Connected ) Analog ground of teletext decoder and digital ground for TV processor 13. SECPLL 14. Vp2 15. DECDIG 16.PHL2LF 17. PHL2LF Secam PLL decoupler Second supply voltage for TV processor Decoupling digital supply Low level : 0V of TV processor Phase II filter Phase I filter High level : 4.98V Low level : 0V High level : 2.88V Low level : 0V High Level : 3V Low level : 0V High level : 2.27 8V 0V 0V 0V Value Low Level: 0 High Level : 3.31V Low level : 0V High Level : 3.31V Low Level : 0V High Level : 3.31V 4V 0V Low Level : 3.36V High level : 3.48V 3.3 V Low level : 0V High Level : 4.06 0V
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18. GND3 19. DECBG 20. AVL / EWD 21. VDRB 22. VDRA 23. IF1 24. IF2 25. IREF 26. VSC 27. TUNER AGC 28. AUDDEM 29. DECSDEM / SIF2 30. GND2 31. SNDPLL / SIF AGC 32. AVL / REF0
Ground for TV processor Band gap decoupling Automatic volume leveling / East west drive output vertical drive B output vertical drive A output IF input 1 IF input 2 Reference current input
0V 3.97 V Low level : 0 High level : 2.61V 0.59V 0.61 1.85V 1.85V 3.97V high level : 3.65V
Vertical sawtooth capacitor Low level : 0V Tuner AGC output Low level : 0V high level : 3.93V Audio de emphasis or SIF 3.14V input 1 Decoupling sound demodulator or SIF input2 Ground 2 for TV processor /AGC sound IF Automatic Volume Levelling / sound IF input / subcarrier reference output /AM output 0V 0V Narrow band PLL filter 2.23V 2.23V
33. H OUT 34. FBISO 35. AUDEXT / QSSO
Horizontal output Flyback input/sandcastle output External audio input /QSS intercarrier out /AM audio output (non controlled)
0.53V 0.67V 3.64V
36. EHTO
EHT/Over protection input
voltage Low level : 0V High Level : 1.6V
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37. PLL IF 38. IFVO / SVO 39. Vp1 40. CVBSINT 41. GND1 42. CVBS / Y 43. CHROMA 44. AUDOUT / AMOUT 45. INSSW2 46. R2 / VIN 47. G2 / YIN 48. B2 / UIN 49. BCLIN 50. BLANKING 51. ROUT 52. GOUT 53. BOUT 54. VddA
IF-PLL loop filter
Low level : 0V High Level : 2.35V
IF video output / selected 3.27V CVBS output Main supply voltage TV- 8V processor (+8 V) Internal CVBS input Ground 1 for TV-processor External CVBS/Y input Chrominance input (SVHS) output (volume controlled) 2nd RGB / YUV insertion 0V input 2nd R input / V (R-Y) input 2nd G input / Y input 2nd B input / U (B-Y) input Beam current limiter input/V-guard input Black current input Red output Green output Blue output decoder and digital supply of TV-processor 3V 2Vpp 2Vpp 2Vpp 2.49V 2.49V 2.49V 1.95 V 2VPP 0V Low level : 0V High Level : 3.3V Low level : 0V High Level : 3.3V
Audio output /AM audio 3.31V
Analog supply of Teletext 3.3V
55. VpE 56. VddC 57. OSCGND
OTP Programming Voltage Digital supply to core Oscillator ground supply
0V 3.3V 0V
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58. XTAL IN 59. XTAL OUT 60. RESET 61. VddP 62. AV1 63. AV2 64. IRIN
Crystal oscillator input Crystal oscillator output Reset Digital supply to periphrery AV AV input input from from switching IC (+3.3 V)
1.57V 1.76V 0V 3.3V
video 0.06V video 0.6V 4.8V
switching IC (+3.3 V) input IR Input
11B. IC-BU4052:- 16 Pin IC. This IC is used for video switching The HEF 4052B is a dual four channel analog Multiplexer / De- Multiplexer with common channel; select Logic. Each Multiplexer / De-Multiplexer has four independents inputs / out puts. (Yo to Y3 ) and a common input / out put (Z) . The Common Channel Select Logic includes two address inputs (A0 and A1) and an active low enable input INH. Both Multiplexer / De Multiplexer has four bi directional analog switches, each with one side connected to an independent input / out put. . ( Yo to Y3 ) and the other side connected to common input / out put ( Z). For operation as a digital multiplexer / demultiplexer VEE is connected to VSS (typically ground).
Application Information : · · · Analog Multiplexing and De-Multiplexing. Digital Multiplexing and demultiplexing. Signal Gating
PINNING: HEF 4052BP Pin no. 1. Y0B 2. Y2B Pin Description (independent inputs/ Out puts) Y2/ out B (independent inputs / out puts) 0.50V Voltage in Volts ( 1 Khz Colour Pattern) 0.50V
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3. ZB 4. Y3B 5. Y1B 6. INH 7. VEE 8. VSS 9. A1 10. A0
( Common input / outputs) (independent inputs / out puts) (independent inputs / out puts) ( enable input (active LOW) ) VEE VSS (address inputs) ( address inputs) puts)
0.50V 0.50V 0.40 V 0 0 0 0.21V 0.21V 0.21V 0 0 0.20V 0.07V 7.96V
11. Y3A (independent inputs / out 12. Y0A (independent inputs / out puts) 13. ZA ( Common input / outputs) puts) 15. Y2A (independent inputs / out puts) 16. VDD VDD 14. Y1A (independent inputs / out
11C. STV 9302A (VERTICLE IC) : The STV 9302A is a vertical deflection booster designed for T.V applications . This device supplied with upto 35 volts and provides upto 2 Vpp current to derive the vertical deflection yoke. Features: · · · · Power Amplifier. Fly Back generator Output Current upto 2 amp. Thermal Protection.
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PINNING: STV 9302 Pin no. 1 2 3 4 5 6 7 Pin Description INPUT(INVERTING) SUPPLY VOLTAGE FLY-BACK GENERATOR Gnd or Negative supply OUT PUT OUTPUT-STAGE SUPPLY INPUT(NON INVERTING) Voltage in Volts ( 1 Khz Colour Pattern) 0.59 V 14 V -11.43 V -12.82 V 0.33V 14.29 V 0.61 V
11D. IC-AT24C16:- This is a 16 Kilo Bite EEPROM with a wide operating range. Features: · · · · · · · · Data EEPROM internally organized as 2048 bytes and 128 pages X 16 bytes. Low power C-MOS. Vcc = 2.7 5.5 Volt operation. Two wire serial interface bus, I2 C- Bus Compatible. Filtered Inputs for Noise Suppression with Schmitt Trigger. Clock frequency upto 400 KHz. High Programming flexibility. High reliability Endurance 106 Cycles Data retention 40 Years. ESD protection 4000V on all pins.
· ·
8 Pin DIP/ DSO packages. Available for extended temperature ranges. Industrial Automotive -400C to + 850C -400C to + 1250C.
-
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PINNING :- 24C16 Pin No 1 2 3 4 5 6 7 8 GND GND GND GND SDA. Serial Data Input SCL. Serial clock GND VCC Pin Description Stand-By Voltage 0V 0V 0V 0V 3.12 V 2.54 V 0V 5V ON Condition Voltage ( 1 Khz Colour Pattern) 0V 0V 0V 0V 3.23 V 2.56 V 0V 5V
11E. IC-TDA9859 (SOUND PROCESSOR) :- TDA 9859 sound processor provides the sound control facilities for the main and the scart channel of a T.V set. Due to extended switching possibilities Signal from three stereo sources can be handled. This is plastic shrink dual in line package 32 pin IC.
Features: · · · · · · · · I2 C bus control for all functions Multi Source Selector Switches. Six AF Inputs ( Three Stereo Sources or Six Mono Sources can be used as a input.) Each of the input signal can be switched to each of outputs. Out put for large speaker channels and pary TV Connector scart, Stereo and pseudo stereo effects. Audio surround decoder can be added externally. To general purpose out put port.
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PINNING: TDA 9859 Pin no. 1 2 3 4 5 6 7 8 9 Pin AV Left input P 1 Not connected MAIN Left CSMO MAIN Right VCC AUDIO OUT Right GND VO 2 Pin Description Scart Input Left Channel Port -1 Input Main Input Left Channel Smoothing Capacitor of reference voltage Main Input Right Channel Supply Voltage Scart Out put right Channel Ground Main Out put Right Channel 10 11 VI 8 CBR 1 Input to Loud Speaker Channel Bass Capacitor Connection-1 Right Channel 12 CBR 2 Bass Capacitor Connection-2 Right Channel 13 14 15 Woofer out Right( N.C) CTR MAIN OUT Right Treble Capacitor Connection right CH. Loud Speaker Output Right Channel Low Level : 0V High Level : 3.8V Low Level : 0V High Level : 3.8V Woofer Out Right 0 Low Level : 0.14V High Level : 3.8V Stand By Voltage Low Level : 0.32V High Level : 3.8V 0 0 Low Level : 0V High Level : 3.8V Low Level : 0.02V High Level : 8V Low Level : 0V High Level : 3.8V Low Level : 0.02V High Level : 8V Low Level : 0.05V High Level 0 Low Level : 0.17V High Level : 3.8V Low Level : 0.16V High Level : 3.8V Low Level : 0.15V High Level : 3.8V : 3.8V
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16 17 18 19
SCL SDA MAIN OUT Left CTL
Serial Clock Input Serial Data Ip / Output Loud Speaker Out Put Left Channel Treble Capacitor Connection Left Channel
Low Level : 2.54V High Level : 2.55V Low Level : 3.10V High Level : 3.27V Low Level : 0V High Level : 3.8V Low Level : 0.10V High Level : 3.8V 0 Low Level : 0.32V High Level : 3.8V Low Level : 0.29V Low Level : 0.27V High Level : 3.8V Low Level : 0.25V High Level : 3.8V 0
20 21 22 23 24 25 26 27 28 29 30 31 32
Woff. Out Left ( N.C) Woofer Output Left CBL 2 CBL 1 VI 7 VO 1 GND AUDIO OUT Left CPS 2 AV 2 Left CPS 1 AV 2 Right P 2 (NC) AV1Right Scart Output Left Channel Pseudo Stereo Capacitor -2 AV2 Left Pseudo Stereo Capacitor -1 AV2 Right Port-2 Output Scart Input Right Bass Capacitor Connection-1 Left CH Bass Capacitor Input to Loud Speaker Left Channel Main Output Left CH
Connection-2 Left CH. High Level : 3.8V
Low Level : 0.05V High Level : 3.8V Low Level : 0.23V High Level : 3.8V Low Level : 0.22V High Level : 3.8V Low Level : 0.20V High Level : 3.8V Low Level : 0.19V High Level : 3.8V 0 Low Level : 0.18V High Level : 3.8V
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11F. SOUND OUTPUT IC: the IC AN178421 is used as the AF out amplifier for the Stereo application. It is supplied by 13 volts from the 13 volt DC coming from a separate winding in the SMPS transformer. An out power of 1.5 Watt can be delivered into an 8 Ohm Load.
PINNING:- AN17821 Pin No 1 2 3 4 5 6 7 8 9 10 11 12 Description VCC Channel 1 out put Ground for channel out put Chanel out (-) Standby Signal Input Channel 1 input Ground Channel 2 input Volume Channel 2 out put (-) Ground for channel 2 Channel 2 out put Voltage in Volts 13V Low Level : 0V High Level : 6.07V 0V Low Level : 0V High Level : 6V Low Level : 0V High Level : 5V Low Level : 0V High Level :1.44V 0V Low Level : 0V High Level : 1.44V 2.8V Low Level :0V High Level : 6V 0V Low Level : 0V High Level : 6V 11G. STR 5Q0765:-The 5QO765RT is a power switch and an enhanced high performance controller. This power switch consists of high voltage power sensitivity and PWM controller IC. PWM Controller features integerated fixed oscillator under voltage lock out, leading edge blanking, optimized gate turn off drivers, thermal shut down protection, over voltage protection. It has a basic platform well suited for cost effective
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design in CTV power supply. With this features it offers really safe and reliable power management Features : · · · · · · · · · Quasi resonant convertor controller. Internal bus mode controller. Pulse by pulse current limiting. Over current latch protection. Over Voltage protection( V-Sink Min 11 Volt). Internal thermal Shut Down function. Under Voltage lock out. Internal High Voltage sensitivity Auto restart mode.
PINNING : STR 5Q0765 Pin No 1 2 3 4 5 Description Drain Ground VCC Feedback SYNC Voltage (in Volts) 300 V 0 Low level: 12.59V High level: 40V Low level : 0.3 V High level: 6.9V Low Level : 0.74V High Level :11V
11. VIDEO AMPLIFIER STAGE:- Transistorised amplifier circuit is used to amplify the R,G,B signal received from TDA9351. The R,G,B output from TDA9351 is applied to base of B911,B921 and B931 and push pull amplifier is used to amplify this signal further and applied to cathode of CRT. Voltage details of 9 transistors used in video amplifier section are as follows.
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Transistor B931 B911 B921 V923 V932 V912 V913 V933 V922
Base Voltage 3.95 V 3.98V 4V 86V 88.7V 86.9V 87.1V 88.7V 85.9V
Collector Voltage 88.9V 87.1V 86.1V 6.8V 170.4V 175.2V 6.82V 6.83V 175V
Emitter Voltage 3.35V 3.38V 3.42V 86.4V 89V 87.3V 87.4V 89V 86.2V
12. VE01 CHASSIS MANUAL ALIGNMENT PROCEDURE In order to enter in service menu and design menu following procedure needs to be followed. ·
12A. Procedure to enter in service mode
1) Press Menu Key on Remote Handset. 2) Press 6483 on remote handset. 3) M appears on the Screen. 4) Press 1234, set will enter into Service Mode. 5) To Change the value of parameter press Volume + / Volume Key, To move from one parameter to another press Channel + / Channel Key on Remote Handset. 6) Press Stand By Key on remote handset to come out of Service Mode. ·
12B. Procedure to Enter Into Design Mode
1) Press Menu Key on Remote Handset. 2) Press 6483 on remote handset. 3) M appears on the Screen. 4) Press 5 on remote handset. 5) Press Lock key on remote handset, set will enter into Design Mode.
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6) To Change the value of parameter press Volume + / Volume Key, To move from one parameter to another press Channel + / Channel Key on Remote Handset. 7) Press "Stand-By" Key to come out of Design Mode. · 12C. White Balance Adjustment:- ( In Field) parameters. Standard settings of these parameters are RD=32, GD=32, BD=32 2) Select the RGB drive parameters RB, GB in menu 3 and adjust this parameter. Default setting of these parameter is RB= 32, GB=32. 3) Select Sub brightness parameter SB in menu 3 and adjust to get proper white balance. The default value of SB=40.
1) Select R,G, B cut off parameter in Menu 3 of service mode and adjust these
·
12D. Screen Adjustment :- (In Field)
1) Select parameter SC in menu 3 of service mode . 2) Increase the value of SC by using channel up key so that thin white line will be visible on the screen 3) Adjust the screen intensity by varying screen pot of fbt using insulated screw driver until a thin horizontal line is just visible. 12E. OTHER SERVICE MODE ADJUSTMENTS: - can be done by entering into service mode by applying the suggested procedure and setting the default value mentioned below. Few cases defaults values can be changed in a small variation for customer satisfaction.
SERVICE PRAMETERS: MENU 1 Parameter V SLOPE V SHIFT V SIZE V SC H SHIFT PROG NO. Variation Default Setting 0-63 0-63 0-63 0-63 0-63 31 for 50Hz & 36 for 60Hz 41 for 50Hz & 36 for 60Hz 31 for 50Hz & 36 for 60Hz 10 for 50Hz & 10 for 60Hz 38 for 50Hz & 37 for 60Hz 1. Remarks For adjusting picture vertical center For shifting picture vertical position For adjusting Vertical amplitude For adjusting Vertical S-Correction For adjusting picture H position
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SERVICE PRAMETERS: MENU 2 Parameter AGC Search Speed Variation Default Setting 0-63 0-3 28 0 Remarks For RF AGC adjustment
SERVICE PRAMETERS: MENU 3 Parameter BT CT SC RB GB RD GD BD SB 0-63 0-63 0-63 0-63 0-63 0-63 Variation 0-100 0-100 Default Setting 75 50 3 32 32 32 32 32 42 Screen variation. R drive. G Drive R cut off G cut off B cut off Sub brightness Remarks
SERVICE PRAMETERS: MENU 4 Parameter OSD.V.POS OSD.H.POS Variation Default Setting 0-63 0-63 16 for 50Hz & 8 for 60Hz 27 for 50Hz & 24 for 60Hz Remarks To adjust OSD Vertical position To adjust OSD horizontal position
DESIGN PRAMETERS: MENU 0 Parameter SUB CONTRAST SUB COLOR SUB SHARPNESS SUB TINT FS-VL-H FS-VL-L FS-VH-H FS-VH-L RGB.HSH.OFFSET Variation Default Setting 0-63 0-63 0-63 0-63 0-255 0-255 0-255 0-255 0-15 63 63 63 31 0 0 0 0 6
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DESIGN PRAMETERS: MENU 5 Parameter PP Mode Brightness Contrast Color Sharpness SC Brightness Cool BD Offset Warm RD Offset YD PAL YD NTSC YD SECAM YD AV PAL YD AV NTSC YD AV SECAM 0-100 0-100 0-100 0-100 0-63 0-32 0-32 0-15 0-15 0-15 0-15 0-15 0-15 Variation Default Setting Std / dynamic / mild 75 / 75 / 75 75 / 100 / 50 50 / 50 / 50 50 / 50 / 50 20 10 10 8 8 8 8 8 8
DESIGN PRAMETERS: MENU 6 Parameter OSO AGC SPEED FFI FSL FMWS HP2 RPO NTSC MATRIX VOL PIN VIDEO OUT Variation 0-1 0-3 0-1 0-1 0-1 0-1 0-1 JAPAN / U.S OPEN DRAIN/ PUSH PULL IF / CVBS IF Default Setting 1 1 0 0 0 0 1 USA OPEN DRAIN
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DESIGN PRAMETERS: MENU 7 Parameter IF DK I BG M SIF PRIORITY AV2 SVHS YUV EURO AV S CURVE P1 S CURVE V1 S CURVE P2 S CURVE V2 Variation 38.9 / 38 / 58.75/ 45.75 OFF / ON OFF / ON OFF / ON OFF / ON DK/ I/ M/ BG OFF/ ON OFF/ON OFF/ON OFF/ON 0-70 0-75 0-100 0-100 Default Setting 38.9MHZ ON ON ON OFF BG OFF ON OFF ON 20 40 70 75
DESIGN PRAMETERS: MENU 8 Parameter CATHOD LEVEL UOC VOLUME FM ATT TDA 9874 AVL TDA 9874 CAIN DUAL OUT AUTO SOUND HEADPHONE TRU BASS DEFAULT LANG LANG OPT LANG SW Variation 0-15 OFF / ON 0-63 0-3 0-30 OFF / ON OFF / ON 0-3 0-1 0-17 FRENCH / RUSSIAN / RU ON / OFF Default Setting 4 OFF 50 1 15 OFF ON 0 0 0 FRENCH ON
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DESIGN PRAMETERS: MENU 9 Parameter BAND MODE START ON ON DELAY LOGO NVM LOGO TXT BRIGHTNESS SPANISH BIT NOT 0 NOT 1 NOT 2 NOT 3 NOT 4 ZOOM WIDE Variation 0-2 0-2 6-15 OFF / ON OFF / ON 0-63 OFF / ON OFF / ON OFF / ON OFF / ON OFF / ON OFF / ON V63 V0 Default Setting 1 1 10 OFF OFF 20 OFF ON ON ON ON ON V56 V2
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BLOCK DIAGRAM Audio Processor TDA 9859 Audio Output AN17821
Speaker
Tuner
Memory AT24C16 Micro Processor (UOC IC ) TDA 9351
SWITCH IC HEF4052BP
SCART
Video Amplifier
CRT
Key
IR
FRONT AV 110VDC Horizontal O/P driver Horizontal O/P TR. FBT Vertical output STV 9302A
SMPS
28V 13V 8V 5V
VE01 CHASSIS ALLIGNMENT PROCEDURE ON MANUFACTURING LINE
PRODUCT : CTV STAGE: HARNESING AT F-A LINE RAW MATERIAL / CONSUMABLES : SR N STOCK NO LOC DESCRIPTION 1 110006308 TIE,CABLE,PLASTIC,2.5X100mm 1 2 PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 JIGS / FIXTURE INSTRUMENTS : PREPARED BY QPS CUTTER 2
WRAP THE SPEAKER CONNECTOR TO TIE CABLE METAL SLEEVE AT SPEAKER FITTING SCREW. TIE THE SPEAKER CONNECTOR TO RIGHT SIDE PORTION OF DEGAUSSING COIL SUCH THAT IT WOULD NOT HANG OVER THE CHASSIS. 3 TIE THE DEGUASSING COIL CONNECTOR TO DEGAUSSING COIL. 4 CUT THE EXCESS LENGTH OF ALL THE TIES. DO NOT LEAVE ANY CUT PORTION OF TIE ON THE CHASSIS. PRODUCT : CTV STAGE: SWITCH ON PCB/ASSY : Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 1 BEFORE SWITCHING ON THE TV SET , CHECK THAT CHASSIS DOCKING AND HARNESING HAVE DONE PROPERLY OR NOT. 2 CHECK THAT DEGAUSSING CONNECTOR HAS CONNECTED. 3 CONNECT RF SIGNAL TO TUNER. 4 SWITCH ON THE TV SET AND ADJUST THE 'SCREEN' AND 'FOCUS' POT OF FBT FOR CLEAR PICTURE. 5 CHECK THAT POWER ON LED IS GLOWING WITH NORMAL INTENSITY. 6 CHECK POWER ON/OFF SWITCH OPERATION BY SWITCHING THE SWITCH ON/OFF TWO TO THREE TIMES. 7 CHECK FOR THE PROBLEMS LIKE CPT GAP, SWITCH OFF SPOT, STRAY EMISSION ,ETC. 8 SELECT CHANNEL "EU 2CH" AND CHECK THAT 'SUB BRIGHTNESS' PATTERN HAS APPEARED . 9 CHECK FOR CHANNEL TUNNING, ELSE TUNE THE PROGRAMS USING "AUTO SEARCH" IN SEARCH MENU. 10 CHECK THE VOLUME VARIATION FROM ZERO TO MAXIMUM. OBSERVE THAT VARIATION IS NOT INTERMITANT. IT SHOULD BE 11 CHECK THE OPERATION OF CH UP/ CH DN/ VOL UP/ VOL DN/ MENU KEYS . 12 CHECK THAT THESE KEYS ARE NOT HARD TO OPERATE. 13 CHECK THE TV SET ASTHETICALLY PRODUCT : CTV PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 STAGE: +B VOLTAGE ALIGNMENT RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS DIGITAL PANEL METER 1 TV SET 1 ALIGNER 2 REMOTE CHECKED BY 1 SWITCH ON THE SET. 2 CONNECT THE RF CORD TO TUNER. 3 SELECT THE 'STANDARD' MODE OF PICTURE CONTROL. 4 CONNECT THE DPM POSITIVE PROBE TO CATHODE OF DIODE "VD631" . ( DPM NEGATIVE PROBE IS INTERNALLY CONNECTED TO CHASSIS GROUND) 5 ROTATE THE PRESET "VR 631" USING ALIGNER TO SET +B VOLTAGE + 115V +/- 0.5V DC
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STAGE: SCREEN ADJUSTMENT PRODUCT : CTV PCB/ASSY :FA Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 FEVIBONAD 2 INSULATED SCREW CHECKED BY 3 DRIVER NOTE : WARM UP THE TV SET FOR AT LEAST 20 MINUTES ( DURING SOAKING AREA) 1 SELECT DIGITAL / RETMA / LION HEAD PATTERN , 2 PRESS "MENU+6483" KEYS SEQUENCE TO ACCESS THE MANUFACTURING MODE. 3 PRESS KEY '3' TO APPEAR 'SERVICE MENU 3' ON SCREEN. 4 SELECT PARAMETER "SC " BY PRESSING CHANNEL UP/DN KEY . 5 PRESS 'VOL UP' KEY THEN A THIN HORIZONTAL LINE WILL BE DISPLAYED ON SCREEN. 6 ADJUST THE SCREEN INTENSITY BY VARYING SCREEN POT OF FBT USING INSULATED SCREW DRIVER UNTIL A THIN HORIZON LINE IS JUST VISIBLE. 7 PRESS "VOL DN" KEY TO APPEAR ORIGINAL PATTERN. 8 APPLY THE FEVIBOND ON "SCREEN" POT. OF FBT. PRODUCT : CTV STAGE: FOCUS AND CONVERGENCE PCB/ASSY : F.A. Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 GLUE 2 PNUE. SCREW DRIVER CHECKED BY 3 FEVIBONAD INSULATED SCREW APPROVED BY DRIVER TIGHTENING TORQUE OF SCREW DRIVER- 10 TO 15 kg.cm and TV SET IS FACING TOWARDS EAST. FOCUS ADJUSTMENT :1 SELECT LION HEAD PATTERN.( EU 5CH) . CHOOSE SELECTABLE PICTURE MODE "STANDARD". 2 ADJUST THE FOCUS KNOB ON FBT USING INSULATED SCREW DRIVER , SO THAT '30' AT THE DIAGONAL CENTRE ON LION HEA WILL GET AS SHARP AS POSSIBLE. THIS SYMBOL INDICATES THE LOCATION OF FOCUS ADJUSTMENT CHECK ON SCREEN. CONVERGENCE ADJUSTMENT :1 SWITCH OVER TO CROSS HATCH PATTERN. 2 BY TURNING THE 4 POLE MAGNET, MATCH THE RED AND BLUE LINES AT THE CENTRE. SHIFT THE RED AND BLUE LINE OVER THE GREEN LINE BY USING 6 POLE MAGNET. 3 TIGHTEN THE CPM LOCK. BE CAREFUL NOT TO MOVE THE OTHER RINGS/MAGNETS AT THIS TIME. 4 CHECK AND ADJUST THE PICTURE FOR TILT.ADJUST THE TILT BY ADJUSTING THE YOKE. 5 APPLY GLUE ON BOTH SCREEN AND FOCUS KNOB OF FBT AFTER ADJUSTMENT OF FOCUS. THIS HORIZONTAL LINE MATCHING WITH EXPOSURE POINTS THIS HORIZONTAL LINE MATCHING WITH EXPOSURE POINTS
EXPOSURE POINTS ON THE SCREEN
EXPOSURE POINTS ON THE SCREEN
FOR TFT CPT MODELS: TILT=0 mm TILT CHECK FOR CONVENTIONAL CPT MODELS: TILT=2 mm NOTE: DO NOT TOUCH TO ANY PART OF FBT. PRODUCT : CTV STAGE: CONVERGENCE RAW MATERIAL / CONSUMABLES : SR N STOCK NO LOC DESCRIPTION 1 TV SET CONVERGENCE ADJUSTMENTS
NOTE : Before attempting any convergence adjustments, the receiver should be operated for at leat fifteen minutes. CENTER CONVERGENCE ADJUSTMENT :
FOCUS CHECK
PCB/ASSY : F.A. Roadstar SHEET : 1 OF 2 JIGS / FIXTURE INSTRUMENTS : PREPARED BY QPS SERVICE REMOTE
1.Select the Cross-hatch pattern (EU 4CH) . 2.Set the brightness and contrast for well defined pattern. 3. Adjust two tabs of the 4-Pole magnets to change the angle between them . ( See fig.-01 & 02) and superimpose red and blue vertical lines in the center area of picture screen. 4.Turn the both tabs at the same time keeping the angle constant to superimpose red and blue horizontal lines at the center of the screen. (See fig-04 & 02) 5.Adjust two tabs of 6-Pole magnets to superimpose red/blue line and green one .Adjusting the angle affects the vertical lines and rotating both magnets affects the horizontal lines. 6.Repeat adjustments 3,4,5 keeping in mind red, green and blue movement , because 4-Pole Magnets and 6Pole Magnets have mutual interaction and make line movement complex
CIRCUMFERENCE CONVERGENCE ADJUSTMENT: 1. Loosen the clamping screw of deflection yoke slightly to allow the yoke to tilt. 2.Temporarily put a wedge as shown in fig1. ( Do not remove cover paper on adhesive part of the wedge.) 3.Tilt front of the deflection yoke up or down to obtain better convergence in circumference (see fig.3). Push the mounted wedge in to the space between picture tube and the yoke, to fix the yoke temporarily. 4.Put other wedge in to bottom space and remove the cover paper to stick. 5.Tilt front of the yoke right or left to obtain better convergence in circumference. (see fig.3) 6.Keep the yoke position and put another wedge in either upper space. Remove cover paper and stick the wedge on picture tube to fix the yoke. 7.Detach the temporarily mounted wedge and put it in another upper space.Stick it on picture tube to fix the yoke. 8.After fixing three wedges , recheck overall convergence. Tighten the screw firmly to fix the yoke and check the yoke is firm. 9.stick three adhesive tapes on wedges as shown in fig.o.
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Convergence Adjustment:
2 OF 2
PREPARED BY
Screw to Tighten CPM Assy
CHECKED BY
APPROVED BY
Convergence magnets of CPM Assy FIG-04 FIG-01
FIG-02
FIG-03
PRODUCT : CTV STAGE: GEOMETRIC ALIGNMENT PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 SELECT RETMA PATTERN (EU 5CH). PRESS "MENU+6483" KEYS SEQUENCE TO ACCESS THE MANUFACTURING MODE. THEN PRESS HOTKEY "1". TO ACCESS 'SERVICE MENU-1'. 1 .HORIZONTAL CENTERING: H-SHIFT SELECT PARAMETER "H-SHIFT" BY USING CHANNEL DOWN KEY. ADJUST "H-SHIFT" VALUE BY USING VOLUME UP/DN KEYS SUCH THAT THE PATTERN IS LOCATED HORIZONTALLY AT CENTRE. 2 VERTICAL LINERITY ADJUSTMENT: V-SLOPE SELECT "V-SLOPE" & ADJUST IT BY VOLUME UP/DN KEY TO ADJUST CENTRE DOTTED LINE OF RETMA PATTERN TO THE TOP EDGE OF BLACK HALF PATTERN ( i.e. EXACTLY THE TOP HALF PORTION OF RETMA PATTERN IS VISIBLE). 3 VERTICAL RASTER SHIFT: V-SHIFT SELECT "V-SHIFT" AND ADJUST IT SUCH THAT PATTERN WILL APPEAR AT MECHANICAL CENTRE OF THE PICTURE TUBE. 4 VERTICAL HEIGHT** V-SIZE SELECT "V-SIZE" AND ADJUST IT SUCH THAT HEIGHT OF THE LION HEAD PATTERN BECOMES ' 9 - 9'. ACCEPTABLE RANGE IS 8.9 TO 9.1. ( REFER FIG- ) 5 VERTICAL SCROLL V-SC SELECT "V-SC" AND ADJUST IT SUCH THAT BIG CIRCLE WILL LOOK PERFECT CIRCLE.
USE "STAND BY" KEY TO QUIT THE MANUFACTURING/SERVICE MODE.
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PRODUCT : CTV PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 STAGE: OSD ALIGNMENT RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 PRESS "MENU+6483" KEYS SEQUENCE TO ACCESS THE MANUFACTURING MODE. THEN PRESS HOTKEY "1". SELECT RETMA PATTERN (EU 5CH). OSD DISPLAY ADJUSTMENT ** VERTICAL AND HORIZONTAL *** OSDH AND OSDV SELECT SERVICE MENU -4 BY PRESSING HOTKEY "4".. A BIG RECTANGLE WILL APPEAR ON SCREEN. 1 SELECT "OSD V-POS" BY CH.DN KEY. AND ADJUST DOTTED RECTANGLE AT THE VERTICAL CENTRE OF SCREEN. 2 SELECT "OSD H-POS" BY CH.DN KEY. AND ADJUST DOTTED RECTANGLE AT THE HORIZONTAL CENTRE OF SCREEN.
USE "STAND BY" KEY TO QUIT THE MANUFACTURING/SERVICE MODE.
2
OSD ALIGNMENT ON NTSC PATTERN: SELECT COLOUR BAR+CIRCLE PATTERN ( NTSC SYSTEM ) SELECT PARAMETER "OSD V-POS " & "OSD H-POS" BY CHANNEL UP/ DN KEYS . ADJUST THE PARAMETER VALUES SUCH THAT A BIG DOTTED RECTANGLE SHOULD BE SYMMETRICALLY LOCATED ON RETMA PATTERN.
PRODUCT : CTV STAGE: WHITE BALANCE ADJUSTMENT PCB/ASSY : F.A. CHASSIS : ALL SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 WHITE BALANCE INTRODUCTION TO WHITE BALANCE ADJUSTMENT WINDOW
GREEN AND BLUE CUT OFF STATUS BARS THIS INDICATES WHIT BALANCE CONDITION "NG" OR "GOOD"
MODEL SELECTION WINDOW
TARGET VALUES OF WHITE BALANCE
TOLERANCE OF TARGET VALUES GREEN AND BLUE DRIVE STATUS BARS
SUB CONTRAST STATUS BAR
SUB BRIGHTNESS STATUS BAR
CURRENT STATUS
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PRODUCT : CTV STAGE: WHITE BALANCE ADJUSTMENT PCB/ASSY : F.A. Roadstar SHEET : 2 OF 2 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 WHITE BALANCE METER NOTE : WARM UP THE TV SET FOR AT LEAST 20 MINUTES ( DURING SOAKING AREA) ENSURE "TONE" IN SETTINGS MENU IS "NORMAL" AND SELECTABLE PICTURE MODE IS "STANDARD".. 1 ENSURE THAT THE MODEL NAME DISPLAYED IN 'MODEL INFORMATION WINDOW' IS CORRECT. 2 TV SET WILL STOP IN FRONT OF CAMERA SENSOR ,CONNECT WHITE BALANCE SIGNAL FROM WHITE BALANCE TESTER. TO TUNER INPUT OF SET. 3 AUTO DEGAUSSING WILL START.OBSERVE THAT , WHILE DEGAUSSING ,MONITOR DISPLAY WILL APPEAR VIBRATING.AFTER DEGAUSSING , SENSOR WILL COME FORWARD TILL IT JUST TOUCHES TO SCREEN. 4 ENSURE THAT THE SET POSITION IS SUCH THAT SCREEN WILL BE IN FRONT OF SENSOR.AS WELL AS NEAR TO IT. TAKE CARE THAT NO OSD WILL BE IN FRONT OF SENSOR SO THAT IT WILL NOT GET SENSED BY SENSOR WHILE TESTING AND ADJUSTMENT OF WHITE BALANCE. 5 PRESS "MENU+6483" KEY AND HOTKEY "3" , SELECT SERVICE PARAMETERS FOR RGB CUTOFF 7 ADJUSTMENT & ADJUST IT BY VOL. UP/ VOL. DN KEYS. IF NEEDED ADJUST THE VALUES FOR PARAMETERS OF RGB DRIVES 6 IF NECESSARY, ADJUST THE 'SUB BRIGHTNESS' VALUE BY SELECTING APPROPREATE SERVICE PARAMETER. 7 THE ADJUSTMENTS ARE MUTUALLY INTERDEPENDENT SO ADJUST ALL ABOVE MENTIONED PARAMETERS TILL THE RED BLO BAR COMES AT CENTRE AND "NG" DISPLAY TURNS IN TO "GOOD" . SERVICE PARAMETERS:SPECIFICATIONS: RGB CUTOFF'S FOR ALL OTHER BRANDS UOC/VX05T/ PIP OC POC/ROADSTAR TSB2 M VX04T X= 275+/- 5 DSPM2129 RDC RD RD R CUT RDC y= 292+/- 5 CR GDC GD GD G CUT GDC FOR LOW BEAM Y=15 CG BDC BD BD B CUT BDC FOR HIGH BEAM Y=113 CB RGB DRIVES GDRV GB GB GDRV GDRV FOR TOSHIBA BRAND WG BDRV RB RB BDRV BDRV X= 260 WB SUB BRIGHTNESS y= 271 SBRT SBRT SUB-BRI BRTS BRTC SB FOR LOW BEAM Y= 5 FOR HIGH BEAM Y= 99 USE "STAND BY" KEY TO QUIT THE MANUFACTURING/SERVICE MODE PRODUCT : CTV STAGE: SOUND Q.C.-1 PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS REMOTE 1 TV SET 1 1 CONNECT THE RF SIGNAL CORD TO TUNER. 2 CHECK FOR VOLUME VARIATION FROM ZERO TO MAX. (FOR CH-02 & CH-05) SOUND SHOULD BE DISTORTION FREE AT MAX. VOLUME LEVEL. 3 CHECK FOR HISSING SOUND , DISTORTED SOUND PROBLEMS.. 4 CHECK SOUND MUTE, AVL. 5 BANG THE CHASSIS FOR LOOSE CONTACT . 6 REMOVE THE RF SIGNAL CORD FROM TUNER. 7 FOR DETAILS, PLEASE REFER USERS GUIDE BOOK PRODUCT : CTV STAGE: PICTURE Q.C.-1 PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS 1 TV SET 1 SERVICE REMOTE 2 EXT. DEGAUSSING COIL CHECKED BY 1 CONNECT RF SIGNAL CORD TO TUNER . 2 SELECT CHANNEL "EU 5CH" .CHECK FOR GEOMETRICAL ALIGNMENTS, DISPLAY ALIGNMENTS,(HEIGHT & WIDTH SHOULD BE HEAD PATTERN.) LION HEAD PATTERN SHOULD LOOK LINEAR AND SYMMETRICAL . 3 CHECK FOR FOCUS ADJUSTMENT AT DIAGONAL CENTRE OF PICTURE TUBE. '30' DIGITS ON LION HEAD PATTERN SHOULD BE SHARP VISIBLE. 4 PRESS "ZOOM' KEY ON REMOTE TO SELECT "ZOOM' MODE AND CHECK THAT HEIGHT OF THE RETMA PATTERN IS SELECT "WIDE" MODE AND CHECK THAT PATTERN HEIGHT IS 75% OF THE SCREEN. 5 SELECT CROSS HATCH PATTERN (EU 4CH) AND CHECK FOR CONVERGENCE QUALITY. HORIZONTAL AND VERTICAL LINES SHOULD BE WHITE. 6 CHECK FOR SUB BRIGHTNESS ON CHANNEL ( EU 2CH).. SUB BRIGHTNESS SHOULD BE SUCH THAT 5 & 1/2 BARS ON SUB BRIGHTNESS PATTERN WITH PICTURE MODE "STANDARD" ARE VISIBLE . IF REQUIRED ADJUST PARAMETER "SB" IN SERVICE MENU-HOTKEY-3 FOR SPECIFIED SUB BRIGHTNESS ALIGNMENT. 7 CHECK THAT OSD DISPLAY IS NOT CUTTING ON COLOUR BAR+CIRCLE PATTERN WHEN 'ZOOM' MODE IS SELECTED. 8 CHECK FOR P-CONTROL- CONTRAST,BRIGHTNESS,COLOUR ,SHARPNESS. 9 CHECK FOR ALL BANDS TUNING WITH THEIR RESPECTIVE SOUND. 10 CHECK FOR WHITE BALANCE, TILT ALIGNMENT.& COLOUR PATCH. 11 CHECK FOR SELECTABLE PICTURE MODES AS STANDARD,DYNAMIC, MILD , USER. 12 CHECK CPT RELATED PROBLEMS (SCRATCH/CONVERGENCE-DYNAMIC&STATIC / YOKE TILT,CPT GAP OR TILT). 13 CHECK FOR RASTER COLLAPSE DURING SWITCH OFF, CHECK FOR THE PROBLEMS SUCH AS DAMPING BAR, BLOOMING, RETRACE LINES, STRAY EMISSION ETC. 14 FOR DETAILS, PLEASE REFER USERS GUIDE BOOK USE "STAND BY" KEY TO QUIT THE MANUFACTURING/SERVICE MODE
5
PRODUCT : CTV STAGE: TELETEXT CHECKING PCB/ASSY :F.A. CHASSIS :ROA SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS 1 TV SET 1 REMOTE TELETEXT CHECKING:SELECT COLOUR BAR PATTERN. PRESS "TXT/MIX" KEY ON REMOTE 1 OBSERVE THAT "P100 (INDEX PAGE OF TELETEXT) HAS APPEARED. PRESS "TXT/MIX" KEY AGAIN AND OBSERVE THAT THE TE 2 PAGE HAS SUPERIMPOSED ON THE COLOUR BAR PATTERN. SELECT PAGE "P102" BY USING PROGRAM UP KEY AND OBSERV 3 THAT " *** LARGE CHARACTERS *** " PAGE HAS APPEARED. . PRESS "TV/AV" KEY TO QUIT FROM TELETEXT MODE. 4 SELECT SETTINGS MENU AND CHECK THAT TXT=EAST/WEST " FUNCTION. 5 PRESS "SUB CODE " KEY ON REMOTE & CHECK "DK/I/BG" OPTIONS PRODUCT : CTV STAGE: NTSC / H.V. CHECKING PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS 1 TV SET 1 REMOTE 2 HV METER CHECKED BY 3 HAND GLOVES 4 BALUN NTSC CHECK: 1 SELECT COLOUR BAR+CIRCLE PATTERN. 2 SELECT COLOUR SYSTEM=NTSC IN 'SETTINGS ' MENU. 3 SELECT TINT OPTION IN PICTURE MENU. AND VARY ITS VALUE . 4 WHILE TINT VARIATION ,CHECK THAT RED COLOUR IS CHANGING. 5 IF FOUND ANY ABNORMALITY IN CHECKING , PLEASE REJECT THE SET. H.V. TEST 1 REMOVE THE MAINS CORD FROM PALLET AND INSERT IT IN HV SOCKET.(SPECIALLY PROVIDED) 2 SNAP SPECIAL BALUN INTO TUNER POINT. 3 TOUCH THE HV TERMINAL TO BALUN POINT. 4 PRESS THE TEST /ENABLE BUTTON ON HV TESTER,IF BUZZER OPERATES FOR UNSPECIFIED TIME THEN REJECT THE SET. 5 REMOVE MAINS CORD FROM SOCKET AND INSERT IN PALLET SOCKET. 6 RELEASE THE SET FOR NEXT STAGE. AFTER CHECKING, MAKE "M-MODE" ON BY PRESSING "SERVICE KEY+DEMO KEY". SETTING PARAMETER: 1.1KV, 3mA, FOR 3 SEC. PRODUCT : CTV STAGE: NTSC ALIGNMENTS PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS NTSC PATTERN 1 TV SET 1 GENERATOR 3 SERVICE REMOTE 4 FOR NTSC ALIGNMENTS 1 SELECT NTSC PATTERN .( COLOR BAR+CIRCLE PATTERN ) 2 PRESS "MENU+6483" KEYS SEQUENCE TO ACCESS THE MANUFACTURING MODE. THEN PRESS HOTKEY "1" TO ENABLE MENU-1. 1 .HORIZONTAL CENTERING: H-SHIFT SELECT PARAMETER "H-SHIFT" BY USING CHANNEL DOWN KEY. ADJUST "H-SHIFT" VALUE BY USING VOLUME UP/DN KEYS SUCH THAT THE PATTERN IS LOCATED HORIZONTALLY AT CENTRE. 2 VERTICAL LINERITY ADJUSTMENT: V-SLOPE SELECT "V-SLOPE" & ADJUST IT BY VOLUME UP/DN KEY SUCH THAT EXACTLY THE TOP HALF PORTION OF RETMA PATTERN IS VISIBLE. VERTICAL RASTER SHIFT: V-SHIFT SELECT "V-SHIFT" AND ADJUST IT SUCH THAT PATTERN WILL APPEAR AT MECHANICAL CENTRE OF THE PICTURE TUBE. 4 VERTICAL HEIGHT** V-SIZE SELECT "V-SIZE" AND ADJUST IT SUCH THAT HEIGHT OF THE LION HEAD PATTERN BECOMES ' 9 - 9'. ACCEPTABLE RANGE IS 8.9 TO 9.1. ( REFER FIG- ) 5 VERTICAL SCROLL V-SC SELECT "V-SC" AND ADJUST IT SUCH THAT BIG CIRCLE WILL LOOK PERFECT CIRCLE PRODUCT : CTV STAGE: AV CHECKING PCB/ASSY :F.A. Road Star SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS REMOTE H-SET 1 TV SET 1 MONITOR av out SET 2 AV CORDS CHECKED BY 3 monitor av in tv set CONNECT THE RF SIGNAL CORD TO TUNNER. SELECT CHANNEL "EU 2CH". AV IN CHECKING 1 KEEP MONITOR SET IN TV MODE AND 'TESTING TV SET' IN 'EURO AV' MODE BY USING "TV/AV" KEY ON REMOTE. 2 CHANNEL "EU 2CH" IS SELECTED IN MONITOR TV SET. 3 CONNECT "VIDEO OUT" AND "AUDIO OUT" CORD OF MONITOR SET TO "VIDEO IN " AND "AUDIO IN" JACKS OF TESTING TV SET 4 LISTEN FOR NORMAL SOUND AND PICTURE OF CHANNEL "EU 2CH" PRESENT IN THE "TESTING TV SET" . 5 CHECK THE AUDIO FOR BOTH THE AUDIO IN JACKS. AV OUT CHECKING:1 KEEP MONITOR SET IN 'AV' MODE AND 'TESTING TV SET' IN 'TV' MODE BY USING "TV/AV" KEY ON REMOTE. 2 SELECT SUB BRIGHTNESS PATTERN (EU 2CH) ON TESTING TV SET. 3 CONNECT "VIDEO IN" AND "AUDIO IN" CORD OF MONITOR SET TO "VIDEO OUT " AND "AUDIO OUT" JACKS OF TESTING TV SET 4 LISTEN FOR NORMAL SOUND AND PICTURE OF CHANNEL "EU 2CH" PRESENT IN THE "MONITOR TV SET" . 5 REMOVE THE AV CORDS AFTER TESTING. CHECK "CD PLAY=ON/OFF" FUNCTION IN SOUND MENU 3
6
PRODUCT : CTV STAGE: SOUND Q.C.-2 PCB/ASSY :F.A. RoadStar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS 1 TV SET 1 REMOTE 2 HAMMER CHECKED BY 1 CONNECT THE RF SIGNAL CORD TO TUNER. 2 CHECK FOR VOLUME VARIATION FROM ZERO TO MAX. (FOR CH-02 & CH-05) SOUND SHOULD BE DISTORTION FREE AT MAX. VOLUME LEVEL. 3 CHECK FOR HISSING SOUND , DISTORTED SOUND PROBLEMS.. 4 CHECK SOUND MUTE, AVL. 5 BANG THE CHASSIS FOR LOOSE CONTACT . 6 REMOVE THE RF SIGNAL CORD FROM TUNER. 7 FOR DETAILS, PLEASE REFER USERS GUIDE BOOK. SHOCK TEST: 1 GENTLY HIT THE HAMMER ON TOP SIDE OF FRONT COVER. CHECK FOR ANY ABNORMALITY PRODUCT : CTV STAGE: PICTURE Q.C.-2 PCB/ASSY :F.A. RoadStar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS 1 TV SET 1 SERVICE REMOTE 1 CONNECT RF SIGNAL CORD TO TUNER . 2 SELECT CHANNEL "EU 5CH" .CHECK FOR GEOMETRICAL ALIGNMENTS, DISPLAY ALIGNMENTS,(HEIGHT & WIDTH SHOULD BE HEAD PATTERN.) LION HEAD PATTERN SHOULD LOOK LINEAR AND SYMMETRICAL . 3 CHECK FOR FOCUS ADJUSTMENT AT DIAGONAL CENTRE OF PICTURE TUBE. '30' DIGITS ON LION HEAD PATTERN SHOULD BE SHARP VISIBLE. 4 PRESS "ZOOM' KEY ON REMOTE TO SELECT "ZOOM' MODE AND CHECK THAT HEIGHT OF THE RETMA PATTERN IS SELECT "WIDE" MODE AND CHECK THAT PATTERN HEIGHT IS 75% OF THE SCREEN. 5 SELECT CROSS HATCH PATTERN (EU 4CH) AND CHECK FOR CONVERGENCE QUALITY. HORIZONTAL AND VERTICAL LINES SHOULD BE WHITE. 6 CHECK FOR SUB BRIGHTNESS ON CHANNEL ( EU 2CH).. SUB BRIGHTNESS SHOULD BE SUCH THAT 5 & 1/2 BARS ON SUB BRIGHTNESS PATTERN WITH PICTURE MODE "STANDARD" ARE VISIBLE . IF REQUIRED ADJUST PARAMETER "SBI" IN SERVICE MENU-HOTKEY-3 FOR SPECIFIED SUB BRIGHTNESS ALIGNMENT. 7 CHECK THAT OSD DISPLAY IS NOT CUTTING ON COLOUR BAR+CIRCLE PATTERN WHEN 'ZOOM' MODE IS SELECTED. 8 CHECK FOR P-CONTROL- CONTRAST,BRIGHTNESS,COLOUR ,SHARPNESS. 9 CHECK FOR ALL BANDS TUNING WITH THEIR RESPECTIVE SOUND. 10 CHECK FOR WHITE BALANCE, TILT ALIGNMENT.& COLOUR PATCH. 11 CHECK FOR SELECTABLE PICTURE MODES AS STANDARD,DYNAMIC, MILD , USER. 13 CHECK CPT RELATED PROBLEMS (SCRATCH/CONVERGENCE-DYNAMIC&STATIC / YOKE TILT,CPT GAP OR TILT). 14 CHECK FOR RASTER COLLAPSE DURING SWITCH OFF, CHECK FOR THE PROBLEMS SUCH AS DAMPING BAR, BLOOMING, RETRACE LINES, STRAY EMISSION ETC. 15 FOR DETAILS, PLEASE REFER USERS GUIDE BOOK PRODUCT : CTV STAGE: FEATURE CHECKING PCB/ASSY :F.A. RoadStar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS 1 TV SET 1 REMOTE SWITCH ON THE SET. SELECT FOLLOWING FUNCTIONS 1 SELECT "SETTINGS" MENU AND CHECK 'EURO AV' FOR 'Y/C, RGB, VIDEO' OPTIONS. 2 IN SETTINGS MENU - CHECK TONE=NORMAL, WARM, COOL. 3 CHECK 'BLACK STRETCH' IN SETTINGS MENU-BRIGHTNESS INCREASES WHEN BLACK STRETCH IS 'OFF'. 4 SELECT "TIMER" MENU AND CHECK THAT ON TIMER, OFF TIMER, REPEAT SETTINGS ARE AVAILABLE. 5 SELECT "SETTINGS--->LANGUAGE" MENU AND CHECK THAT 18 DIFFERENT LANGUAGES ARE AVAILABLE INCLUDING 'ENGLISH'. 6 IN SETTINGS MENU - CHECK BLUE SCREEN ON/OFF ( CHECK THIS FEATURE WITHOUT RF SIGNAL ) 7 LOCK FUNCTION: PRESS "LOCK" KEY FOR 4 SECOND TO ACTIVATE LOCK FUNCTION . CHECK THAT LOCK MENU WITH DIFF. LO ARE AVAILABLE. 8 REVEAL & HOLD : PRESS "REVEAL" KEY , CHECK THAT TV SWITCHES TO ALL THE TUNNED PROGRAMS AND EURO AV MODE S AND STOPS AT THE PROGRAM TO WHICH "HOLD" KEY IS PRESSED. 9 FOR DETAILS , PLEASE REFER USER'S GUIDE BOOK PRODUCT : CTV STAGE: SHIPPING PCB/ASSY : F.A. RoadStar SHEET : 1 OF 1 RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY SR N STOCK NO LOC DESCRIPTION QPS SERVICE REMOTE 1 TV SET 1 1 CHECK THE SET IN ALL ASPECTS. 2 PRESS "MENU+6483" KEYS SEQUENCE TO ACCESS THE MANUFACTURING MODE. THEN PRESS HOTKEY "2" TO ENABLE MENU-2. 3 SELECT "SHIPPING" OPTION AND PRESS VOL UP KEY. 4 AFTER SIPPING ,TV SET WILL SWITCH AGAIN. 5 MAKE THE MAINS 'POWER' SWITCH OFF. USE "STAND BY" KEY TO QUIT THE MANUFACTURING/SERVICE MODE
7
VILEUR UOC STEREO SCH
1
2005.10.10
SP101 2 XS152 R915
2
N151 AN17821
GND(CH1out) GND(CH2out)
V912 BF420
R917 220 R918
CRT°å
L911 82uH R928 1.5K L913 82uH L912 82uH R OUT B OUT G OUT 1.5K R938 1.5K
CH2 OUT(+)
10K MTZJ8.2 VD941 1 2 3 XS151 XS903 GND R912 10K R925
2
VE901 A51JSY61X03
!
CH2 OUT(-)
CH1out(+)
STAND-BY
CH1out(-)
CH2 IN
CH1in
GND
Vcc
VOLUME
V911 2SC2330 R913 300 VD911 1N4148 V913 BF421 R916 330 R927 V922 BF420 V921 2SC2330 C921 220 R924 47 V923 BF421 R926 330 220
SP102
1
+3.3V
2
3
4
5
6
7
8
9
10
11
12
C911 220 R914 47
+13V
C152 0.01u C151 2200u/25V
+
+5V
1 2 C160 10u/16V R157 270K C157 6800p
+
N701 AT24C16 1 8
N703
3.3K 3.3K 3.3K 3.3K C703 0.01u
+
IK B G R R911 47 R921 47
10K
N301 TDA9361 1 STAND BY 2
0038A2 R742 3.3K R741 3.3K R743 100
XS905 SOCKET
!
+5V
R731 3.3K
R191 2.2K C191 1u
+
R192
R733
2
7
C702 47u/16V R709 100
8.2K C153 1u VD141
3 C156 1u R155 1.8K
+
+
R701
R712
R710
1 4 2 5 TO XP2102 3 6
IRIN AV2 AV1
64
+8V
C141 100u/16V
+
R923 300 VD921 1N4148 R935
2
R951
+8V
3
SCL
6
SCL SDA
63
1
4
SDA
5
R711 100
10K
3
62
L703 10uH
+3.3V
V141 2SA1015 R142 10K
R143 22K
C155 6800p
1u R153 1.8K
+
10K
5 XS156
VD955 RGP10J
R141
R156 68K
C154
4
V932 BF421
220
J
1N4148
R931 GND 47
R937
R955 2.2M
4
+3.3V
TUNING NTSC SW /AC TEST
VddP
61
R734 10K VD702 1N4148
TO XP2001
1 2 XS701
C719 0.01u
C718 2.2u
V142 2SC1815
1
C943 1000/2KV V931 2SC2330 GND 1 2 3 4 5 R932 10K R922 10K R933 300 VD931 1N4148 C931 220 R934