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COLOR TELEVISION
SERVICE MANUAL
MODEL NO.: PF21GB300
CHASSIS NO.: ETE-2
Please read this manual carefully before service!
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Catalog
Safety Instructions and Maintenance......................................................2 Adjustments...................................................................................... .5 Structure and Chassis Function Description ..........................................13 Service Data .....................................................................................15
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1.
SAFETY INSTRUCTIONS AND MAINTENANCE WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAUTION"AND "PRODUCT SAFETY
NOTICE"INSTRUCTION BELOW. 1.1 X-RAY RADIATION PRECAUTION 1.1.1 The EHT must be checked every time the TV is serviced to ensure that the CRT does not emit X-ray radiation as result of excessive EHT voltage. The maximum EHT voltage permissible in any operating circumstances must not exceed the rated value. When checking the EHT, use the High Voltage Check procedure in this manual using an accurate EHT voltmeter. 1.1.2 The only source of X-RAY radiation in this TV is the CRT. The TV minimizes X-RAY radiation, which ensures safety during normal operation. To prevent X-ray radiation, the replacement CRT must be identical to the original fitted as specified in the parts list. 1.1.3 Some components used in this TV have safety related characteristics preventing the CRT from emitting X-ray radiation. For continued safety, replacement component should be made after referring the PRODUCT SAFETY NOTICE below. 1.1.4 Service and adjustment of the TV may result in changes in the nominal EHT voltage of the CRT anode. So ensure that the maximum EHT voltage does not exceed the rated value after service and adjustment. 1.2 SAFETY PRECAUTION WARNING: REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY. 1.2.1 The TV has a nominal working EHT voltage. Extreme caution should be exercised when working on the TV with the back removed. Do not attempt to service this TV if you are not conversant with the precautions and procedures for working on high voltage equipment. When handling or working on the CRT, always discharge the anode to the TV chassis before removing the anode cap in case of electric shock. The CRT, if broken, will violently expel glass fragments. Use shatterproof goggles and take extreme care while handling. Do not hold the CRT by the neck as this is a very dangerous practice.. 1.2.2 It is essential that to maintain the safety of the customer all power cord forms be replaced exactly as supplied from factory. 1.2.3 Voltage exists between the hot and cold ground when the TV is in operation. Install a suitable isolating transformer of beyond rated overall power when servicing or connecting any test equipment for the sake of safety. 1.2.4 When replacing ICs, use specific tools or a static-proof electric iron with small power (below 3 5W). 1.2.5 Do not use a magnetized screwdriver when tightening or loosing the deflection yoke assembly to avoid electronic gun magnetized and decrement in convergence of the CRT. 1.2.6 When remounting the TV chassis, ensure that all guard devices, such as nonmetal control buttons, switch, insulating sleeve, shielding cover, isolating resistors and capacitors, are installed on the original place. 1.2.7 Replace blown fuses within the TV with the fuse specified in the parts list. 1.2.8 When replacing wires or components to terminals or tags, wind the leads around the terminal before soldering. When replacing safety components identified by the international hazard symbols on the circuit diagram and parts list, it must be the company-approved type and must be mounted as the original. 1.2.9 Keep wires away from high temperature components. 1.3 PRODUCT SAFETY NOTICE CAUTION: FOR YOUR PROTECTION, THE FOLLOWING PRODUCT SAFETY NOTICE
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SHOULD BE READ CAREFULLY BEFORE OPERATING AND SERVICING THIS TV SET. 1.3.1 Many electrical and mechanical components in this chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the X-ray radiation protection afforded by them cannot necessarily be obtained by using replacements rated at higher voltages or wattage, etc. Components which have these special safety characteristics in this manual and its supplements are identified by the international hazard symbols on the circuit diagram and parts list. Before replacing any of these components read the parts list in this manual carefully. Substitute replacement components which do not have the same safety characteristics as specified in the parts list may create X-ray radiation. 1.3.2 Do not slap or beat the cabinet or CRT, since this may result in fire or explosion. 1.3.3 Never allow the TV sharing a plug or socket with other large-power equipment. Doing so may result in too large load, causing fire. 1.3.4 Do not allow anything to rest on or roll over the power cord. Protect the power cord from being walked on, modified, cut or pinched, particularly at plugs. 1.3.5 Do not place any objects, especially heavy objects and lightings, on top of the TV set. Do not install the TV near any heat sources such as radiators, heat registers, stove, or other apparatus that produce heat. 1.3.6 Service personnel should observe the SAFETY INSTRUCTIONS in this manual during use and servicing of this TV set. Otherwise, the resulted damage is not protected by the manufacturer. 1.4 SAFETY SYMBOL DESCRIPTION The lightning symbol in the triangle tells you that the voltage inside this product may be strong nough to cause an electric shock. Extreme caution should be exercised when working on the TV with the back removed.
This is an international hazard symbol, telling you that the components identified by the symbol have special safety-related characteristics. UL This symbol tells you that the critical components identified by the UL marking have special safety-related characteristics. VDE or TUV This symbol tells you that the critical components identified by the VDE/TUV marking have special safety-related characteristics. 1.5 MAINTENANCE 1.5.1 Place the TV set on a stable stand or base that is of adequate size and strength to prevent it from being accidentally tipped over, pushed off, or pulled off. Do not place the set near or over a radiator or heat register, or where it is exposed to direct sunlight. 1.5.2 Do not install the TV set in a place exposed to rain, water, excessive dust, mechanical vibrations or impacts. 1.5.3 Allow enough space (at least 10cm) between the TV and wall or enclosures for proper ventilation. 1.5.4 Slots and openings in the cabinet should never be blocked by clothes or other objects. 1.5.5 Please power off the TV set and disconnect it from the wall immediately if any abnormal condition are met, such as bad smell, belching smoke, sparkling, abnormal sound, no picture/sound/raster. Hold the plug firmly when disconnecting the power cord. 1.5.6 Unplug the TV set from the wall outlet before cleaning or polishing it. Use a dry soft cloth for cleaning the exterior of the TV set or CRT screen. Do not use liquid cleaners or aerosol cleaners.
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2.
ADJUSTMENTS
2.1 SET-UP ADJUSTMENTS The following adjustments should be made when a complete realignment is required or a new picture tube is installed. Perform the adjustments in the following order: Color purity Convergence White balance Notes: The purity/convergence magnet assembly and rubber wedges need mechanical positioning. For some picture tubes, purity/ convergence adjustments are not required. 2.1.1 Color Purity Adjustment Preparation: Before starting this adjustment, adjust the vertical sync, horizontal sync, vertical amplitude and focus. ·Face the TV set north or south. ·Connect the power plug into the wall outlet and turn on the main power switch of the TV set. ·Operate the TV for at least 15 minutes. ·Degauss the TV set using a specific degaussing coil. ·Set the brightness and contrast to maximum. ·Counter clockwise rotate the R /B low brightness potentiometers to the end and rotate the green low brightness potentiometer to center. ·Receive green raster pattern signals. ·Loosen the clamp screw holding the deflection yoke assembly and slide it forward or backward to display a vertical green zone on the screen. Rotate and spread the tabs of the purity magnet around the neck of the CRT until the green zone is located vertically at the center of the screen. ·Slowly move the deflection yoke assembly forward or backward until a uniform green screen is obtained. ·Tighten the clamp screw of the assembly temporarily. Check purity of the red raster and blue raster until purities of the three rasters meet the requirement.
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2.1.2 Convergence Adjustment Preparation: Before attempting any convergence adjustment, the TV should be operated for at least 15 minutes. ·Center convergence adjustment. ·Receive dot pattern. ·Adjust the brightness/contrast controls to obtain a sharp picture. ·Adjust two tabs of the 4-pole magnet to change the angle between them and red and blue vertical lines are superimposed each other on the center of the screen. ·Turn both tabs at the same time keeping the angle constant to superimpose red and blue horizontal on the center of the screen. ·Adjust two tabs of the 6-pole magnet to superimpose red/blue line and green line. ·Remember red and blue movement. Repeat steps 2.1.3 2. 1.5 until optimal convergence is obtained. ·Circumference convergence adjustment. ·Loosen the clamp screw holding the deflection yoke assembly and allow it tilting. ·Temporarily put the first wedge between the picture tube and deflection yoke assembly. Move front of the deflection yoke up or down to obtain better convergence in circumference. Push the mounted wedge in to fix the yoke temporarily. ·Put the second wedge into bottom. ·Move front of the deflection yoke to the left or right to obtain better convergence in circumference. ·Fix the deflection yoke position and put the third wedge in either upper space. Fasten the deflection yoke assembly on the picture tube. ·Detach the temporarily mounted wedge and put it in either upper space. Fasten the deflection yoke assembly on the picture tube. ·After fastening the three wedges, recheck overall convergence and ensure to get optimal convergence. Tighten the lamp screw holding the deflection yoke assembly.
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2.1.3 White Balance Adjustment Generally, white balance adjustment is made with professional equipment. It's not practical to get good white balance only through manual adjustment. For TVs with I2C bus control, change the bus data to adjust white balance. 2.2 CIRCUIT ADJUSTMENTS Preparation: Circuit adjustments should be made only after completion of set-up adjustments. Circuit adjustments can be performed using the adjustable components inside the TV set. For TVs with 2 I C bus control, first change the bus data. 2.2.1 Degaussing A degaussing coil is built inside the TV set. Each time the TV is powered on, the degaussing coil will automatically degauss the TV. If the TV is magnetized by external strong magnetic field, causing color spot on the screen, use a specific degausser to demagnetize the TV in the following ways. Otherwise, color distortion will be shown on the screen. ·Power on the TV set and operate it for at least 15 minutes. ·Receive red full-field pattern.
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·Power on the specific degausser and face it to the TV screen. ·Turn on the degausser. Slowly move it around the screen and slowly take it away from the TV. ·Repeat the above steps until the TV is degaussed completely. 2.2.2 Confirmation and Adjustment for Voltage Caution: +B voltage has close relation to high voltage. To prevent X-ray radiation, set +B voltage to the rated value. The maximal radiator is not GND by reason of linking to TP--12V. ·Make sure that the supply voltage is within the range of the rated value. ·Connect a digital voltmeter to the voltage output terminal of the main PCB. Power on the TV and set the brightness and sub-brightness to minimum. Ensure that the voltage from the main PCB reads as follows. ·Regulate voltage adjustment components on the power section until the +B the voltage reaches the rated value. Test Point Voltage Test Point Voltage TP-115V TP-15V TP-3.3V TP-12V TP-195V 117V±1.5V 15.5V±1V 3.3V±0.3V 13V±2V 196V±2V TP-18V TP-5V TP-8V TP--12V 23V±2V 5V±0.5V 8V±1V -13V±2V
Note: It's impossible to check the power part separately from the main chassis board as the part is mounted on the main chassis board. The power components, etc. should be checked for burnout when power-on. If burned out, do not power on the TV again until the cause is found out. 2.2.3 High Voltage Inspection Measure voltages of test points on the main PCB with the digital voltmeter. Measure the CRT high voltage with the high-voltage testing equipment and heater voltage with the high-frequency effective voltmeter. The rated values are shown as below. Test Point Negative of VD49 1 21 "FS_CRT_anode Heater 2.2.4 Focus Adjustment Caution: Dangerously high voltages are present inside the TV. Extreme caution should be exercised when working on the TV with the back removed. ·After removing the back cover, look for the FBT on the main PCB. There should be a FCB (FOCUS) on the FBT. ·Power on the TV and preheat it for 15 min. ·Receive a normal TV signal. Rotate knob of the FCB until you get a sharp picture. 2.25 SERVICE mode To enter the SERVICE mode Set the volume to 0. Then press and hold the MUTE button on the remote control, and press the MENU button on the TV to enter the SERVICE mode. To exit from the SERVICE mode, turn off the TV set by the POWER button on the remote control. Caution: The user service mode adjustment can be changed only when service personnel adjust the whole set Voltage 1 96±2V 26±1.5KV 6.3±0.3Vrms Test Point 14"GS_CRT_anode 21 "PF-CRT-anode Voltage 22±1.5KV 27±1.5KV
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data during servicing. As the control data have dramatic effects on functions and performance of the TV,service personnel should not tell user how to enter the SERVICE mode to avoid improper data settings. Adjustments and bus data SERVICE mode STS0/1/2/3/4 IFP1 IFP2 TINT 5WBF 5WBR TWBK PWL OIF 6WBF 6WBR
5HP/6HP 5HB/6HB
Adjust
Description UOC system surveillance display
Note
00 00 20 adjustable adjustable 88 15 20 adjustable adjustable adjustable adjustable adjustable 0A adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable 00 26 20 20 1F 1F 1F 00 50 00 00 00 07 adjustable
IF PRESET VALUE 1 IF PRESET VALUE2 BASE BAND TINT CONTROL
# # #
TIME OF "WIDE BLANKING" Peak white limted Off-set if demodulatour
# # #
HOR PARALLELOGRAM CORRECTION HOR BOW CORRECTION HORIZONTAL SHIFT DVD HORIZONTAL SHIFT E-W WIDTH E-W PARABOLA WIDTH E-W UPPER CORNER PARABOLA E-W BOTTOM CORNER PARABOLA E-W TRAPEZIUM VERTICAL SLOPE VERTICAL AMPLITUDE VERTICAL S CORRECTION VERTICAL SHIFT DVD VERTICAL SHIFT OSDVERTICAL SHIFT BLACK LEVEL OFFSET:R BLACK LEVEL OFFSET:G WHITE POINT R WHITE POINT G WHITE POINT B DVD BLACK LEVEL OFFSET:R DVD BLACK LEVEL OFFSET:R DVD WHITE POINT R DVD WHITE POINT G DVD WHITE POINT B LUMINANCE DELAY TIME AGC TAKE OVER
* * * *** * * * * * * * * * *** ** ** ** ** ** ** ** ** ** ** ** # *
5HSH/6HSH 5HZD/6HZD 5EWW/6EWW 5EWP/6EWP 5UCR/6UCR 5LCR/6LCR
5TC/6TC
5VSL/6VSL 5VAM/6VAM 5SCL/6SCL 5VSH/6VSH 5VZD/6VZD 5VOF/6VOF RED GRN WPR WPG WPB DRED DGRN DWPR DWPG DWPB YDFP/YDFN/ YDFS/YDAV TOP
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VOL VOLA CORE VLG 1 VLG2 COL1 COL2 TIME IFFS HDOL AGC VG2B SBRI MBRI SCON MCON SCOL OP1 OP2 OP3 OP4 OP5 OP6 OP7 OP8 OP9 OP10 INIT VG2 VSD
2A 20 03 0A 0E 04 04 0F 02 0A 03 1A 24 30 20 39 32
Volume control Dummy AVL level Core noise reduction The first line vertical position of LOGO The second line vertical position of LOGO The color of first line LOGO The color of second line LOGO The time of No signal auto off IF 38MHZ(03)/38.9MHZ(02)/45 .75MHZ(01) Cathode drive level AGC time VG2 bright set Sub bright Max bright Sub contrast Max contrast Sub color Optional 1 Optional 2 Optional 3 Optional 4 Optional 5 Optional 6 Optional 7 Optional 8 Optional 9 Optional 10 EEPROM init
*** # # ** ** ** ** #
# *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Screen Voltage : Rotate knob of the SCREEN on the FBT *
BIT 0 1 2 OP1 3 4 5 6 7 OP2 0
Name OP_HOTEL OP_236 OP_NTSC OP_AV2 OP_S VSH OP_DVD OP_SCART OP_OSO OP_AVL
Deccription HOTEL m o d e l , 1 : y e s ; 0 : n o CHANNEL number s e t u p ( 1 : 2 3 6 , 0 : 1 0 0 ) NTSC ( 1 : y e s , 0 : n o ) 2 AV input(1:AV2,0:no AV2) S-VIDEO input(1:yes;0:no) DVD input(1:yes,0:no) SCART(1:yes;0:no) Switch off in vertical overscan A V L ( : 1 y e s ; 0 : n o AVL (SLIM CRT))
Data 1 1 1 1 0 0 1 1 1
10
1 2 3
OP_AUTO_SOUND OP_NOT_1 OP_NOT_2
AUTO_SOUND Text language s e t u p O P _ N O T _ 3 / 2 / 1 ; 1XX-English/ Arabic 011-English /Farsi 010-English /Russian 001-English /Ukrainian 000-English / Paneuro USER'S LOGO SETUP 1 : b l u e b a c k ; 0 : b l a c k back OSD language: 1,ENGLISH OSD language: 1, CZECH OSD language: 1, SLOVAK OSD language: 1, RUSSIAN OSD language: 1, FRENCH OSD language: 1, GERMAN OSD language: 1, ITALY OSD language: 1, SPANISH OSD language: 1, PORTUGUESE OSD language: 1, SERBIAN OSD language: 1, TURKISH OSD language: 1, POLISH OSD language: 1, BULGARIAN OSD language: 1, ROMANIAN OSD language: 1, CROATIAN OSD language: 1, HUNGARIAN OSD language: 1, Ukrainian OSD language: 1, ARABIC OSD language: 1, FARSI BLANK BLANK 1 : S C A R T 0 : RCA 1 : T D A 1 5 1 7 ; 0 : TFA9842AJ 1:FAKE A V L ; 0 : A V L
1 0 0
4
OP_NOT_3
0
5 6 7 0 1 2 OP3 3 4 5 6 7 0 1 2 OP4 3 4 5 6 7 0 1 2 OP5 3 4 5 6 7 0 1 2 OP6 3 4 5 6 7
OP_USER_LOGO OP_ON_BLACK OP_FSL OP_ENGLISH OP_CZECH OP_SLOVAK OP_RUSSIAN OP_FRENCH OP_GERMAN OP_ITALY OP_SPANISH OP_PORTUGUESE OP_SERBIAN OP_TURKISH OP_POLISH OP_BULGARIAN OP_ROMANIAN OP_CROATIAN OP_HUNGARIAN OP_UKRAIN OP_ARABIC OP_FARSI OP_BLANK OP_BLANK OP_RFTOAV OP_TDA1517 OP_FAKE_AVL OP_AV_ON OP_DIRECT_SWITCH OP_HCO OP_CHH_LOGO OP_SOUND_DK OP_SOUND_BG OP_SOUND_I OP_SOUND_M
0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 0 0 1 0 0 1 1 1 1
1:AV shutdown,AV r e s t a r t ; 0 : T V restart 1 1 : m e mo r y - r e s t a r t ; 0 : p o w e r - o n and standby EHT tracking mode 1:CHANGHONG 1:D/K 1:B/G 1:I 1:M logo
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0 1 2 3 OP7 4 5 6 7 0 1 2 OP8 3 4 5 6 7 0 1 2 OP9 3 4 5 6 7 0 1 2 OP10 3 4 5 6
OP_AUTO_LANGO OP_AUTO_LANG 1 OP_AUTO_LANG2 OP_AUTO_LANG3 OP_AUTO_LANG4 OP_FORF OP_FORS OP_HOTEL_ON_PROG OP_AUTO_TEST OP_PSNS OP_B SCREEN OP_SECAM OP_DFL OP_SIF OP_EXT_SIF0 OP_EXT_SIF1 OP-TUNER OP_TINT OP_FMWS OP_FMWS1 OP_OSVE OP-FFI OP-SPEED 1 OP-SPEED0 OP_AKIRA_LOGO OP_NTSC_TUNER OP_CHILD_LOCK OP_BLANK OP_BLANK OP_BLANK
AUTO_ Language 4/3/2/1/0: ENGLISH:00000 CZECH:00001 SLOVAK:00010 ... OP_FORS/FORF: 00-AUTO 60HZ,01-KEEP LAST, 10-FORCE 60HZ,11-AUTO 50HZ 1 :Startup on channel 1 sensibility Black screen1 Yes;0:No 1:SECAM Disable flash protection hotel model available0
0 0 0 0 0 1 1
Power-on self-test , 1 :yes,0,no
0 0 0 1 1 0 1 0 0 1 1 0 0 0
D/K:00,B/G:01,I:10,M:11. 0:TAF5-E4I22 1:TAF5-C4I21/ TAF5-C4I23 1 :PAL TINT Adjust WINDOW OF SOUND PLL:+/-200KHZ WINDOW OF SOUND PLL:+/-600KHZ
Program quickly, Program slowly, LOGO:AKIRA 1:TAF5-U2F22 1 :CHILD LOCK BLANK BLANK BLANK
1:yes,0no 1:yes,0no
0 0 0 0 0 0 0 0 0
OP_HBL(only for slim crt) If HBL=1,5/6WBF and 5/6WBR are available
7 OP_TEXT_KEY 1: (remote-control unit)TEXT key available 1 Notes: The data sheet may differ dependent on different models. The data sheet may differ dependent on different CRTs for the same model.
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3.
STRUCTURE AND CHASSIS FUNCTION DESCRIPION
3.1 STRUCTUE BLOCK DIAGRAM
3.2 CHASSIS DESCRIPTION 3.2.1 General Description ETE-2 chassis is applied in PF21GB300 seriers. By use of philips UOC for TV small signal processing and bus control, the chassis enables TV tuning, adjustment, control and picture correction, featuring high-integration, high-performance-to-price ratio and high-reliability and compact circuit with fewer external components. The chassis, widely used in small and medium TVs, provides much more convenience for manufacturing and technical service. It includes: UOC TDA9384PS/N3/3 for PAL/NTSC /SECAM small signal processing and bus control EEPROM AT24C08 for data memory ,TDA4863AJ for vertical output power amplifying, TFA9842AJ for audio power
amplifying ,Thick-film IC STR-G5653 for power circuit adjustment and control. 3.2.2 The following features are available in the chassis:
Color systems: PAL, SECAM ,NTSC(selectable) Sound systems: D/K, B/G, I , M 236 programs preset,AV stereo,Hotel ,Biorhythm,child lock ,teletextselectable
3.2.3 The chassis mainly uses the following ICs and assemblies. Po sition 1 N200 Typ e AT24 C08 D escr ip tion EERPO M
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2
N100
TDA9384 PS/N3 /3 TDA9353 PS/N3 /3 TDA938 1PS/N3/3 TDA9345 PS/N3 /3
For slim C R T , Small signal processor and micro control,no teletext For slim C R T , Small signal processor and micro control,1 page teletext Small signal processor and micro control,no teletext Small signal processor and micro control,1 page teletext Aud io pow er amp lif ier slim CRT V er tic a l s can ou tpu t s tag e c ircu it Sw itch- mode pow er supp ly con tro l IF 38.9 MH z tun er IF 45.75 MHz tun er
3 4
N601 N300
TFA9842AJ TDA4863A J TDA4864A J STR-G5653 TA F5-E4 I22 TA F5-U2F22
5 6
N801 A001
TAF5-C4I21/ TAF5-C4I23 IF 38 MHz tun er
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4.
SERVICE DATA
4.1 TV signal processor TDA935X/8X PS-N3 series 4.1.1 GENERAL DESCRIPTION The various versions of the TDA935X/8X/ PS-N3 series combine the functions of a video processor together with a -Controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1 or 10 page text. The ICs are intended to be used in economy television receivers with 90and 110picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in an SDIP-64 envelope. The features are given in the following feature list. 4.1.2 FEATURES TV processor Available in TDA935X/8X PS versions ·Multi-standard vision IF circuit with alignment-free PLL demodulator ·Internal (switchable) time-constant for the IF-AGC circuit ·The mono intercarrier sound circuit has 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. ·The FM-PLL demodulator can be set to centre frequencies of 4.74/5.74 MHz so that a second sound channel can be demodulated. In such an application it is necessary that an external band pass filter is inserted. ·Integrated chrominance trap circuit ·Integrated luminance delay line with adjustable delay time · Picture improvement features with peaking (with switchable centre frequency, depeaking, variable positive/negative overshoot ratio and video dependent coring) and blue- and black stretching. All features are available for CVBS, Y/C and YPBPR signals. ·Tint control for external RGB/YPBPR signals ·Integrated chroma band-pass filter with switchable centre frequency ·Only one reference (12 MHz) crystal required for the -Controller, Teletext- and the colour decoder ·Multi-standard colour decoder with automatic search system ·Internal base-band delay line ·Indication of the Signal-to-Noise ratio of the incoming CVBS signal · linear RGB/YUV/YPBPR input with fast blanking for external RGB/YUV sources. The synchronisation circuit A can be connected to the incoming Y signal. The Text/OSD signals are internally supplied from the -Controller/Teletext decoder. ·RGB control circuit with `Continuous Cathode Calibration', white point and black level off-set adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently. ·2 levels of contrast reduction of main picture possible during OSD/Text insertion (`halftone') ·OSD/Text gain reduction control ·Adjustable `wide blanking' of the RGB outputs ·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
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·Horizontal and vertical zoom function for 16:9 applications ·Horizontal parallelogram and bow correction for large screen picture tubes ·Low-power start-up of the horizontal drive circuit ·Macrovision keying possibility for horizontal synchronisation.
Available in TDA935X/6X/8X PS versions · choice can be made between versions with mono intercarrier sound FM demodulator and versions with QSS IF A amplifier. ·Source selection between the `internal' CVBS and an external CVBS or Y/C signal
Controller ·80C5 1 -controller core standard instruction set and timing ·1 s machine cycle ·32 - 128Kx8-bit late programmed ROM ·3 - 12Kx8-bit Auxiliary RAM (shared with Display) ·Interrupt controller for individual enable/disable with two level priority ·Two 16-bit Timer/Counter registers ·One 16-bit Timer with 8-bit Pre-scaler ·WatchDog timer ·Auxiliary RAM page pointer ·16-bit Data pointer ·Stand-by, Idle and Power Down modes ·14 bits PWM for Voltage Synthesis Tuning ·8-bit A/D converter ·4 multiplexed inputs for the A/D converter and 5 PWM (6-bits) outputs for control of TV analogue signals (TDA95XX series) ·4 pins which can be programmed as general I/O pin, ADC input or PWM (6-bit) output (TDA93XX series)
Data Capture ·Text memory for 1 or 10 pages ·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 US Closed Caption ·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
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·Comprehensive teletext language coverage ·Full Field and Vertical Blanking Interval (VBI) data capture of WST data
Display ·Teletext and Enhanced OSD modes ·Features of level 1.5 WST and US Close Caption ·Serial and Parallel Display Attributes ·Single/Double/Quadruple Width and Height for characters ·Scrolling of display region ·Variable flash rate controlled by software ·Enhanced display features including overlining, 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 ·Contrast reduction of defined area ·Cursor ·Special Graphics Characters with two planes, allowing four colours per character ·32 software redefinable On-Screen display characters ·4 WST Character sets (G0/G2) in single device (e.g. Latin, Cyrillic, Greek, Arabic) ·G1 Mosaic graphics, Limited G3 Line drawing characters ·WST Character sets and Closed Caption Character set in single
QUICK REFERENCE DATA SYMBOL Supply Vp Ip Ip Input voltages ViVIF(rms) ViSIF(rms) ViAUDIO(rms) ViCVBS(p-p) ViCHROMA(p-p) video IF amplifier sensitivity (RMS value) QSS sound IF (RMS value) amplifier sensitivity 75 45 500 1.0 0.3 V dBV mV V V supply voltages supply current (VP = 8 V) supply current (VP = 3.3 V) 8.0/3.3 135 60 V mA mA PARAMETER MIN. TYP. MAX. UNIT
external audio input (RMS value) external CVBS/Y input (peak-to-peak value) external chroma input voltage (burst amplitude)
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(peak-to-peak value) ViRGB(p-p) RGB inputs (peak-to-peak value) ViY(p-p) luminance input signal (peak-to-peak 10 value) ViU(p-p) / ViPB(p p) ViV(p-p) / ViPR(p p) Output signals demodulated
V
0.7 1.4 /
V V
U / PB input signal (peak-to-peak value) V / PR input signal (peak-to-peak value)
1.33 / +0 7 / 1.05 +0 7
V V
CVBS
output
o(IFVO)(p-p)
(peak-to-peak value) sound IF intercarrier output in QSS versions (RMS value) demodulated AM sound output in QSS versions (RMS value) selected CVBS output (peak-to-peak value) tuner AGC output current range RGB output signal (peak-to-peak value) horizontal output current vertical output current (peak-to-peak value) amplitudes 10 1 0
2.0 100 500
V mV mV
V
o(QSSO)(rms) V o(AMOUT)(rms)
V
2.0 5 2.0
V mA V mA mA
o(CVBSO)(p-p) I o(AGCOUT) V oRGB(p-p) I oHOUT
I oVERT BLOCK
DIAGRAM
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PINNING SYMBOL P3.1/ADC1/PWM1 PIN 6 DESCRIPTION port 3.1 or ADC1 input or PWM1 output
P3.2/ADC2/PWM2 P3.3/ADC3/PWM3 VSSC/P P0.5 P0.6/C VBSTD
7 8 9 10 11
port 3.2 or ADC2 input or PWM2 output port 3.3 or ADC3 input or PWM3 output digital ground for -Controller core and periphery port 0.5 (8 mA current sinking capability for direct drive of LEDs) port 0.6 (8 mA current sinking capability for direct drive of LEDs) or Composite video input. A positive-going 1 V(peak-to-peak) input is required digital ground of TV-processor SE CAM PLL decoupling 2nd supply voltage TV-processor (+8V) supply voltage decoupling of digital circuit of TV-processor phase-2 filter phase-1 filter ground 3 for TV-processor bandgap decoupling Automatic Volume Levelling (90versions)/ E-W drive output (110versions) vertical drive B output vertical drive A output IF input 1 IF input 2 reference current input vertical sawtooth capacitor tuner AGC output SIF input 1 / audio deemphasis SIF input 2 / decoupling sound demodulator ground 2 for TV processor narrow band PLL / AGC sound IF Automatic Volume Levelling / subcarrier reference output / sound IF input / AM output horizontal output flyback input/sandcastle output
VSSA SECPLL VP2 DECDIG PH2LF PH1LF GND3 DECBG AVL/EWD (1) VDRB VDRA IFIN1 IFIN2 IREF VSC AGCOUT SIFIN1/A UDEEM (2) SIFIN2/DECSDEM (2) GND2 SNDPLL/SIFA GC (2) AVL/REF0/SNDIF/ AMOUT (2) HOUT FBISO
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34
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QSSO/AMOUT/ A UDEXT(2) EHTO PLLIF IFVO/SVO/DVBO (2) VP1 CVBS1 GND CVBS3/Y C AUDOUT AMOUT (2) INSSW2
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 1 2 3 4 5
QSS intercarrier output / AM output / external audio input EHT/overvoltage protection input IF-PLL loop filter IF video output / selected CVBS output / DVB output (QFP 80) main supply voltage TV processor internal CVBS input ground for TV processor CVBS3/Y input chroma input audio output / AM audio output (volume controlled) 2nd RGB / YUV insertion input 2nd R input / V (R-Y) input / PR input 2nd G input / Y input 2nd B input / U (B-Y) input / PB input beam current limiter input black current input / V-guard input Red output Green output Blue output analog supply of Teletext decoder and digital supply f OTP Programming Voltage digital supply to core (3.3 V) oscillator ground supply crystal oscillator input crystal oscillator output reset digital supply to periphery (+3.3 V) port 1.0 or external interrupt 1 input port 1.1 or Counter/Timer 0 input port 1.2 or external interrupt 0 input port 1.3 or Counter/Timer 1 input port 1.6 or I2C-bus clock line port 1.7 or I2C-bus data line port 2.0 or Tuning PWM output port 3.0 or ADC0 input or PWM0 output
/
R2/V/PR-IN G2/Y-IN B2/U/PB -IN BCLIN BLKIN RO GO BO VDDA VPE VDDC OSCGND XTALIN XTALOUT RESET VDDP P1.0/INT1 P1.1/T0 P1 .2/INT0 P1 .3/T1 P1 .6/SCL P1 .7/SDA P2.0/TPWM P3.0/ADC0/PWM0
4.2 TFA9842AJ 2-channel audio amplifier with volume control (SE: 1 W to 7.5 W) 4.2.1 General description The TFA9842AJ contains two identical audio power amplifiers. The TFA9842AJ can be used as two
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Single-Ended (SE) channels with a volume control. The maximum gain is 26 dB. The TFA9842AJ comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9842AJ contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip. This gives maximum output power for all supply voltages and load conditions with no unnecessary audio holes. Almost any supply voltage and load impedance combination can be made as long as thermal boundary conditions (number of channels used, external heatsink and ambient temperature) allow it. 4.2.2 Features 2 Channel SE: 1 W to 7.5 W operation possibility Soft clipping Input clamps Volume control Standby and mute mode No on/off switching plops Low standby current High supply voltage ripple rejection Outputs short-circuit protected to ground, supply and across the load Thermally protected 4.2.3 Block diagram of TFA9842AJ
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4.3 VERTICAL SCAN OUTPUT STAGE CIRCUIT TDA4863AJ/TDA4864AJ 4.3.1 FEATURES TDA4863AJ:Output current up to 3 A (p-p) TDA4864AJ: Output current up to 2.5A (p-p) 4.3.2 GENERAL DESCRIPTION The TDA4863AJ and TDA4864AJ are deflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz.
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The TDA4863AJ or TDA4864AJ needs a separate flyback supply voltage, so the supply voltages are independently adjustable to optimize power consumption and flyback time. For the TDA4863AJ or TA4864AJ the flyback supply voltage will be generated internally by doubling the supply voltage and therefore a separate flyback supply voltage is not needed. 4.3.3 Block diagram of TDA4863AJ and TDA4864AJ
PIN 1 2 3 4 5 6 7
SYMBOL VP1 VP3 VP2 GND V-OUT INN INP
DESCRIPTION positive supply voltage 1 flyback generator output supply voltage 2 for vertical output ground or negative supply voltage vertical output inverted input of differential input stage non-inverted input of differential input stage
4.4 EEPROM AT24C08 4.4.1 Features Data EEPROM internally organized as 1024/2048 bytes and 64/128 pages×16 bytes Page protection mode, flexible page-by-page hardware write protection -Additional protection EEPROM of 64/128 bits, bit per data page 1-Protection setting for each data page by writing its protection bit -Protection management without switching WP pin Low power CMOS Vcc=2.7 to 5.5V operation Two wire serial interface bus, IIC-Bus compatible
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Filtered inputs for noise suppression with Schmitt trigger Clock frequency up to 400 kHz High programming flexibility - Internal programming voltage - Self timed programming cycle including erase - Byte-write and page-write programming, between 1 and 16 bytes - Typical programming time 6ms(< 1 0ms) for up to 16 bytes High reliability - Endurance 106 cycles 1) - Data retention 40 years 1) - ESD protection 4000 V on all pins 8 pin DIP/DSO packages Available for extended temperature ranges - - 4.4.2 Pin Description SERIAL CLOCK (SCL): The SCL input is used to positive edge clock data into each EEPROM device and negative edge clock data out of each device. SERIAL DATA (SDA): The SDA pin is bi-directional for serial data transfer. This pin is open-drain driven and may be wire-ORed with any number of other open-drain or open-collector devices. The AT24C08 only uses the A2 input for hardwire addressing and a total of two 8K devices may be addressed on a single bus system. The A0 and A1 pins are no connects. 4.4.3 Memory Organization T24C08, 8K SERIAL EEPROM: Internally organized with 64 pages of 16 bytes each, the 8K requires a 10-bit data word address for random word addressing. 4.4.4 Block Diagram Industrial: Automotive: - 4 0 t o +85 - 4 0 t o +125
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4.5 SWITCH-MODE POWER SUPPLY IC STRG5653 4.5.1 General Description The STRG5653 is part of the STRG5600 series thick-film ICs for switch-mode power supply incorporating power MOSFET with a high-precise error amplifier. The ICs feature fewer external components, small-size and standard power supply. 4.5.2 Block Diagram
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Terminal No. 1 2 3 4 5
Symbols
Description
Functions
D S GND VIN O.C.P/F.B
Drain Terminal Source Terminal Ground Terminal Power supply Terminal Overcurrent/Feedback
MOS FET drain MOS FET source Ground Input of power supply for control Input of overcurrent detection signal
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