SERVICE MANUAL - Planetatecnico
Contents
1. Final Assembly Diagram for 14BM18 22 Warning label 1 21 Certification 1 20 Wire XJ 100 1 19 Rubber washer 4 18 MS notched washer nut 4 17 Tapping screw 4K20BAHCh 4 16 Tapping 3X12VwAHCh 3 15 Tapping sew 3X10KTHCh 2 14 Rear plate 1 13 Side set AV plate 1 12 AV plate 1 1 Wire 1 10 1 9 Distance clip 1 8 Fragile Label 1 7 Cover board 1 6 Back cover 1 5 CRT RGB2. 1 ITCH ON off by the MAIN POWER SWITCH then turned on by the MAIN POWER SWITCH 1 Yes 2 OP HCO EHT tracking mode 1 3 OP LOGO hanghong logo display 1 Displayed without signal 0 reception 0 4 OP_SOUND_DK Sound system D K option setting 1 5 OP_SOUND_BG Sound system B G option setting 1 6 OP SOUND Sound system l option setting 1 7 OP_SOUND_M Sound system M option setting 1 0 OP TUNER Tuner 1 PpS TM 0 0 Panasonic Tuner OP AUTO LAN Outgoing language option setting 0 GO OP AUTO LANG2 1 0 2 OP AUTO LAN English 000 G1 Farsi 001 Arabic 010 Russian 011 OP5 3 OP AUTO LAN French 100 2 101 Italian or Indonesian 110 Spanish or Malay 111 4 OP_FORF Field frequency options OP FORS FORF 1 00 AUTO 60HZ 01 KEEP LAST 10 60HZ 11 AUTO 50HZ 1 6 OP_AVON If AV off then AV on 1 OP_ONPOSITIO TE 7 N With HOTEL mode preset on position is fixed to POS1 0 0 OP AUTOTEST Auto test when power on set to 0 typically 0 1 OP_PSNS Sensitivity 0 2 OP_BSCREEN Black screen when changing channels 1 Yes 0 No 1 OP6 3 OP_SECAM SECAM color system option 1 Yes 1 4 OP_DFL Disable flash protection 1 5 OP_SIF External SIF amplifier 1 Yes 0 No 1 continued 13 SERVICE MANUAL 6 OP EXT SIFO 7 OP EXT SIF1 Sound system options for external circuit OP EXT SIF1 0 D K 00 B
3. 49 BCLIN 2 5 27 6 20 8 50 BLKIN 6 0 27 9 21 3 51 RO 2 6 1 1 1 1 52 GO 2 5 1 1 1 1 53 BO 2 4 1 1 1 1 54 VDDA 3 2 11 0 11 3 55 VPE 0 0 0 56 VDDC 3 2 11 0 11 3 57 OSCGND 0 02 58 XTALIN 59 XTALOUT u 5 60 RESET 0 0 0 61 VDDP 3 2 11 0 11 3 62 P1 0 INT1 0 5 63 P1 1 TO 1 5 3 3 3 3 64 P1 2 INTO 5 0 18 2 17 5 Table 14 Functions and Service Data of AT24C08 N200 s Pins Pin Function Desmptian Digital Multimeter No P Reference Voltage V Positive Resistance 20K Negative Resistance 20K 2 1 Address input 0 00 0 00 0 00 2 Address input 0 00 0 00 0 00 3 Address input 0 00 0 00 0 00 4 Common ground 0 00 0 00 0 00 5 Clock line 4 94 6 85 4 83 6 Dataline 4 94 6 89 5 15 7 PW write protect 4 94 9 58 6 31 8 Supply voltage 4 94 3 5 3 25 Notes 3 The data are only for reference The data sheet may differ dependent on different models 35 SERVICE MANUAL 4 REPLACEMENT OF PARTS 4 1 Description Many electrical and mechanical components in this chassis have special safety related characteristics Components which have these special safety characteristics in this manual and its supplements are identified by the international hazard symbols or UL FCC FDA or VDE marking on the circuit diagram and parts list When replacing any of these components substitute the one which has the same safety characteristics as specified in the manual 36 C
4. V Automatic Volume Levelling subcarrier output for combfiltei applications Qss sound IF amplifier witi separate input and AGC circuit AM sound demodulator without extra reference circuit IPAL decoder ISECAM decoder TSC decoder Horizontal geometry E W Horizontal and Vertical Zoom n 2 size ser RAM size 1K 1 eletext pn losed captioning Bassist 3 X RN a ejpag SERVICE MANUAL 3 Block Diagram JerueoJeju OUO ZN Sdx8x9 xSE6VCL Webel yooja 961 Ta fd A XIJININ IHANA XIBIVIN ANN YIH L H3SNI ANN JOH OSo LX31313L AdI3NO39 AHL3WO3S MI JAHTA HOL3HLS MOV Id ATA YANTI lxaldl3l 51408 IYO WA LSA 15008 JAIHSOSNYHL 100 18 pz 031 lnodnv wU 11 i L Vd 4007 das INAS AH 4300939 NAAN OSS TVd OIX IndoWaa Tid Sual cadia zy ONYE MOHHYN INI 301A ASJAD 109819 Sene HO LIME OSINO2 dWv OA 2 9 20 HOLIMS ONY Nd JJA 1N3WNSIT 5 02 a pl 22 SOVYSNNL 1776 ONNOS 21
5. SERVICE MANUAL punos 4 SSO ZN Sdx8x9 xSE6VGL 19 1614 Ta Ma KALTA aos AD NOIL Yan YE KALTA LYASNI ISO 1X 413141 Ob SS AMLAWIOAD NOILISICIDON 1xX313131 SLHOd Ol FYI Mid ISA HJAIJOSNWHL Si Td 3el 05 199 OLIHd xz 170 097 SAMOA L SALTO 18208 O323NNVHN3 CT Iti 1 1dIHS H Tid 3SO H 3007 das INAS AH 3eva m OSINANVO3S Ivd HOLSYLS HOWE ogg 2 27 ssar Av 30 HOLMS WY div OSCLA SSO dowza Tid Fe 338 7 NBIAIND NY JI ONTOS S80 JI NOISIA b JDYAINAL z I I annos 22 SERVICE MANUAL 4 pinning Table 5 SYMBOL PIN DESCRIPTION P1 3 T1 1 port 1 3 or Counter Timer 1 input P1 6 SCL 2 port 1 6 or I C bus clock line P1 7 SDA 3 port 1 7 or l C bus data line P2 0 TPWM 4 port 2 0 or Tuning PWM output P3 0 ADCO PWMO 5 port 3 0 or ADCO input or PWMO output P3 1 ADC1 PWM1 6 port 3 1 or ADC1 input or PWM1 output P3 2 ADC1 PWM2 7 port 3 2 or ADC2 input or PWM2 output P3 3 ADC3 PWM3 8 p
6. 56 ps Notes D The waveforms are only for reference The waveforms may differ dependent on different models 32 3 KEY ICS SERVICE DATA SERVICE MANUAL Table 11 Function and Service Data of TDA7056B N600B s Pins Pin L ui Digital Multimeter Function Description No Reference Voltage V Positive Resistance 20K Q Negative Resistance 20K 9 1 Not connected 0 2 Positive supply voltage 16 0 4 0 4 3 Voltage input 2 7 4 33 4 Signal ground 0 0 0 5 DC volume control 0 7 9 6 Positive output 8 6 74 7 Power ground 0 0 0 8 Negative output 8 6 74 9 Not connected 0 eo Table 12 Function and Service Data of TDA8356 N401 s Pins Digital Multimeter Victor DT890D Pn Symbol Reference Positive Nerative No Voltage V Resistance Resistance KQ 1 Idrive pos 2 4 27 7 20 3 2 Idrive neg 2 4 27 7 20 4 3 VP 15 4 26 3 13 5 4 VO B 7 7 6 1 6 1 5 GND 0 0 0 6 VFB 45 0 113 3 13 7 7 VO A 7 5 6 1 6 1 8 VO guard 0 2 10 0 9 7 9 VI fb 7 7 6 1 6 1 Table 13 Function and Service Data of TDA9351PS N2 3l N100 s Pins Digital Multimeter Victor DT890D Pin Symbol Reference Positive Nerative No Voltage V Resistance Resistance KQ KO 1 P1 3 T1 3 8 9 5 9 5 2 P1 6 SCL 3 4 6 8 6 8 3 P1 7 SDA 3 0 6 8 6 8 4 P2 0 TPWM 1 8 36 2 17 9 5 P3 0 ADCO PWMO
7. Package 2 Circuit Block Diagram T PROTECTION IL ozv 1 Vin 1 1 DRIVE t REG DRAIN R prc i SOURCE LATCH 5 Q RE X5 1 1 1 A V 1 1 1 TsD V ic esc um 1 1 1 1 1 1 1 1 1 1 1 I I 1 1 45 55 1 57 99 I4 FEEDBACK amp 2 lt 1 ove CURRENT 1 1 1 1 T 1 as a E as a NA SERVICE MANUAL 3 Pin Configuration and Functions 23 0 03 0 85 0 2 0 1 0 1 AT ROOT Dwg MK 003 50 mm Fig 16 Table 9 Pin function for STR G5653 Pin No Symbol Function Description 1 D MOSFET drain 2 S MOSFET source 3 GND Ground 4 Vin Supply voltage input for control circuit 5 OCP FB Over current protection detection signal voltage limiting signal input Table 10 Pin function for STR F6654 Pin No Symbol Function Description 1 OCP FB Over current protection detection signal voltage limiting signal input 2 S MOSFET source 3 D MOSFET drain 4 Vin Supply voltage input for control circuit 5 GND Ground 4 Difference between STR G5653 and STR F6654 a b Different
8. SERVICE MANUAL 1 3 Vertical scan output stage circuit TDA8356 N6 DC coupled vertical deflection circuit TDA8356 1 Features Few external components Highly efficient fully DC coupled vertical output bridge circuit Vertical flyback switch Guard circuit Protection against Short circuit of the output pins 7 and 4 Short circuit of the output pins to VP Temperature protection High EMC immunity because of common mode inputs A guard signal in zoom mode 2 General Description The TDA8356 is a power circuit for use in 90 and 110 colour deflection systems for field frequencies of 50 to 120 Hz The circuit provides a DC driven vertical deflection output circuit operating as a highly efficient class G system 3 Block Diagram 4 Pinning Vp Votguand VFB drivetpos drivetneg Vp Vor GND TDA8356 VFB Vota VOftguard Fig 11 Fig 12 Table 8 SYMBOL PIN DESCRIPTION Idrive pos 1 input power stage positive includes II sb signal bias Idrive neg 2 input power stage negative includes II sb signal bias VP 3 operating supply voltage VO B 4 output voltage B GND 5 ground VFB 6 jinput flyback supply voltage VO A 7 voltage VO guard 8 guard output voltage VI fb 9 input feedback voltage 27 1 4 EEPROM 24 08 1 Features Data EEPROM internally organized as 1024 2048 bytes and 64 128 pagesx16 byt
9. switch insulating sleeve shielding cover isolating resistors and capacitors are installed on the original place 7 Replace blown fuses within the TV with the fuse specified in the parts list 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 9 Keep wires away from high temperature components PRODUCT SAFETY NOTICE CAUTION FOR YOU PROTECTION THE FOLLOWING PRODUCT SAFETY NOTICE SHOULD BE READ CAREFULLY BEFORE OPERATING AND SERVICING THIS TV SET 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 Do not slap or
10. 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 1 1 Power on the TV set and operate it for at least 15 minutes 1 2 Receive red full field pattern 1 3 Power on the specific degausser and face it to the TV screen 1 4 Turn on the degausser Slowly move it around the screen and slowly take it away from the TV 1 5 Repeat the above steps until the TV is degaussed completely 2 Supply Voltage Adjustment Caution B voltage has close relation to high voltage To prevent X ray radiation set B voltage to the rated voltage 2 1 Make sure that the supply voltage is within the range of the rated value 2 2 Connect a digital voltmeter to the B voltage output terminal of the TV set Power on the TV and set the brightness and sub brightness to minimum 2 3 Regulate voltage adjustment components on the power PCB to make the voltmeter read 115 1V 3 High Voltage Inspection Caution No high voltage adjustment components inside the chassis Please perform high voltage inspection in the following ways 3 1 Connect a precise static high voltmeter to the second anode inside the high voltage cap of the picture tube 3 2 Plug in the supply socket 110 240V AC 50 60Hz and turn on the TV Set the brightness and contrast to minimum 0 n A 3 3 The high voltage reading should be less
11. Lower corner parabola correction for large screen CR only SEWT 6 1F Trapezoidal correction for large screen only EWT 5VSL 6V SL 1F Vertical slope for large screen only 5VAM 6V Vertical amplitude For 50Hz 5 is AM displayed for 60Hz 6VAM is displayed 5SCL 6S Set to the S correction optimal mode Vertical center in the TV mode for 50Hz 60Hz For SVSH 6V Set to the 50Hz 5VSH is displayed for60Hz 6VSH SH optimal mode is displayed 6 Set to the OSD vertical center optimal mode VX 19 Vertical zoom for large screen only RED 20 Red gun cutoff voltage i GRN 20 Green gun cutoff voltage WPR 1F Red gun drive voltage T WPG 1F Green gun drive voltage WPB 1F Blue gun drive voltage T YDFP Y 07 PAL brightness delay time NTSC brightness delay DFN time TOP 10 1F UOC AGC ii TV audio output power can be adjusted by means of UOC audio output amplitude Generally UOC audio output amplitude is set to 26 for 21 models with VOL 26 stereo output of 3W 3W 2C for 21 models with stereo output of 5W 5W 24 for 14 models with mono output of 2WX2 22 for 14 models with mono output of 1WX2 10 continued SERVICE MANUAL IFFS 03 02 PIF 02 38 9MHz 03 38MHz HDOL 00 07 Cathode drive level typical 04 07 AGC 03 IF ACG speed VG2 brightness se
12. SECAM 1 PAGE TELETEST TDA9350 48K PAL NTSC 1 PAGE TELETEST TDA9361 64K PAL NTSC SECAM 10 PAGE TELETEST TDA9360 64K PAL NTSC 10 PAGE TELETEST TDA9380 32K PAL NTSC TDA9387 32K NTSC TDA935X 6X 8X PS N2 series TV signal processor Teletext decoder with embedded Controller 1 General Description The various versions of theTDA935X 6X 8X PS N2 series combine the functions of a TV signal processor together with Controller and US Closed Caption decoder Most versions have Teletext decoder on board The Teletext decoder has an internal RAM memory for 1or 10 page text The ICs are intended to be used in economy television receivers with 90 and 110 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 The features are given in the following feature list The differences between the various ICs are given in the table on page 4 2 Features TV signal processor Multi standard vision IF circuit with alignment free PLL demodulator 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
13. Teletext decoder with embedded Controller TDA935X 6X 8X PS N2 series Controller 80C51 controller core standard instruction set and timing 1 smachine cycle 16 128Kx8 bit late programmed ROM 3 12Kx8 bit DATA RAM shared between Display Acquisition and Auxiliary Ram 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 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 Data Capture Text memory for 0 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 19 SERVICE MANUAL Signal quality detector for video and WST VPS data types Comprehensive teletext language cover
14. not tell user how to enter the SERVICE mode to avoid improper data settings 5 611 Set the volume to 0 Then press and hold the MUTE button on VS 0 3F25 the remote control and press the MENU button on the TV to UE enter the SERVICE mode In this case the S mode cannot be stored in the EEPROM To exit from the S mode turn off the TV set 6 1 2 After entering the S mode Red S is displayed on the upper center of the screen and MENU1 is default Use the POS buttons to highlight an adjustment and the VOL buttons to adjust it The adjusted data are immediately output and stored in the EEPROM 6 2 Bus data in the S mode Table 1 Adjustment and Option Data in S mode Item Adjustment Description Remarks CORE 03 Coring for some CPU only 0 IF 20 Sound adjustment setting for some CPU only 6 Parallelogram correction for large screen only 6 1F Curve correction for large screen only BOW continued SERVICE MANUAL Horizontal center in the TV mode for 50Hz 60Hz SHSH 6H Set to the For 50Hz 5HSH is displayed for 60Hz 6HSH SH optimal mode is displayed SEWW 6 1F East West correction for large screen only EWW SEWP 6 East West parabola correction for large screen EWP only 5UCR 6 Upper corner parabola correction for large screen UCR only SLCR 6L
15. size STR F6654 is larger Different pin functions Different electric characteristics Larger power output switching current avalanche rated and internal allowable power consumption for STR F6654 internal allowable power consumption for STR F6654 30 SERVICE MANUAL 2 WAVEFORMS OF KEY POINTS 29 ns 2 08 V 6 01 V NIOO Pin58 18 ps 4 00 V 11 76 V NIOO Pin34 lt 55 us lt 55 000 ps 5 18 ms 4699 pu y ud MN i NL e es Niog NIOO E manake aa 4 21 22 i TT 1 t ps E ps 18 8 V 28 8 V 2 tT UE ite xn sette E E BU250 25 BSC60H 8DX B t HEAT F 3 1 4 56 ps t ps 31 SERVICE MANUAL B ps M i 188 v 1 99 V T BEER at ck ee qim d m es BCT 4 N100 Pin4 P40 S E pal YA ps lt
16. than the EHT limitation 3 4 Change the brightness from minimum to maximum and ensure high voltage not beyond the limitation in any case Nominal voltage 22 1 3KV Limited EHT voltage 25KV 4 Focus Adjustment Caution Dangerously high vollages are present inside the TV Extreme caution should be exercised when working on the TV with the back removed 4 1 After removing the back cover look for the FBT on the main PCB There should be a FCB on the SERVICE MANUAL FBT 4 2 Power on the TV and preheat it for 15 min 4 3 Receive a normal TV signal Rotate knob of the FCB until you get a sharp picture 5 Safety Inspection 5 1 Inspection for insulation and voltage resistant Perform safety test for all naked metal of the TV Supply high voltage of 3000V AC 50Hz limit current of 10mA between all naked metal and cold ground Test every point for 3 min and ensure no arcing and sparking 5 2 Requirements for insulation resistance Measure resistance between naked metal of the TV and feed end of the power cord to be infinity with a DC 500 high resistance meter and insulation resistance between the naked metal and degaussing coil to be over 20M 2 6 DESIGN SERVICE mode 6 1 To enter the USER SERVICE mode Caution The user service mode adjustment can be changed only when service personnel adjust the whole set data during servicing As the control data have dramatic effects on functions and performance of the TV service personnel should
17. 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 BLU Red Red BLU 4 pole Magnet Movement 6 pole Magnet Movement Incline the Yoke up or down Incline the Yoke Right or left Circumference Convergence by DEF Yoke Fig 3 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 PC bus control change the bus data to adjust white balance SERVICE MANUAL 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 bus control first change the bus data 1 Degaussing A degaussing coil is built inside he TV set Each time the TV is powered on the degaussing coil will automatically degauss the TV
18. 0 1 11 8 12 3 6 P3 1 ADC1 PWM1 0 1 5 0 5 0 7 P3 2 ADC2 PWM2 0 02 13 5 13 5 8 P3 3 ADC3 PWM3 0 7 10 7 9 3 33 continued SERVICE MANUAL 9 VSSC P 0 0 0 10 5 0 01 13 3 13 3 11 P0 6 4 2 11 6 11 0 12 VSSA 0 0 0 13 SECPLL 2 3 27 6 21 7 14 VP2 8 0 1 8 1 8 15 DECDIG 5 0 23 1 16 1 16 PH2LF 3 2 27 5 21 0 17 3 9 27 9 21 2 18 GND3 0 0 0 19 DECBG 4 0 24 4 18 7 20 AVL EWD 1 0 01 27 6 21 2 21 VDRA 24 27 6 20 4 22 IFIN1 24 27 6 20 3 23 IFIN2 1 8 24 7 19 8 24 IREF 1 8 24 7 19 9 25 TUNERAGC 3 8 25 3 20 5 26 AUDEEMSIFIN1 1 3 8 27 7 21 5 27 DECSDEM SIFIN2 1 1 6 8 4 8 4 28 GND2 3 2 27 1 20 7 29 VSSA 2 3 27 8 21 6 30 SECPLL 0 0 0 31 SNDPLL SIFAGC 1 2 3 27 8 21 8 32 AVL SNDIF REFO AMOUT 1 0 2 27 2 20 4 HOUT 0 4 5 3 5 3 34 FBISO 0 5 24 0 18 8 35 AUDEXT QSSO AMOUT 1 3 7 27 8 21 5 36 AUDEXT 1 6 18 7 16 0 37 QSSO AMOUT 1 24 27 8 21 5 38 AUDEXT 3 3 24 0 21 1 39 QSSO AMOUT 1 77 1 8 1 8 40 AUDEXT 3 8 27 5 21 2 41 GND1 0 0 0 42 5 3 3 27 5 21 2 43 CHROMA 14 26 8 20 9 44 AUDOUT AMOUT 1 3 3 27 5 21 5 45 INSSW2 1 6 1 0 1 0 46 R2 VIN 2 6 28 0 217 47 2 2 6 28 0 21 7 48 B2 UIN 2 6 28 0 217 34 continued SERVICE MANUAL
19. 50 60Hz Weight Approx 10 5kg Dimensions 416 X 332 x 390mm W XH XD Rated power consumption 69W Note Designs and specifications are subject to change without notice SERVICE MANUAL INSTRUCTIONS FOR SERVICE SAFETY AND MAINTENANCE WARNING BEFORE SERVICING THIS CHASSIS READ THE X RAY RADIATION PRECAUTION SAFETY PRECAUTION AND PRODUCT SAFETY NOTICE INSTRUCTION BELOW X RAY RADIATION PRECAUTION 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 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 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 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 valu
20. FILE NO SM CTV O 158 COLOR TELEVISION RVICE MANUAL MODEL NO 14BM18 CHASSIS NO EX 1A3 Please read this manual carefully before service TABLE OF CONTENTS SPECIFICATIONS 1 SAFETY INSTRUCTIONS AND MAINTENANCE 2 X RAY RADIATION PRECAUTION 2 SAFETY PRECAUTION 2 PRODUCT SAFETY NOTICE 3 SAFETY SYMBOL DESCRIPTION 3 MAINTENANCE nn 4 ADJUSTMENTS eene 5 SET UP ADJUSTMENTS 5 CIRCUIT ADJUSTMENTS 8 STRUCTURE AND CHASSIS FUNCTION DESCRIPTION 15 STRUCTURE BLOCK DIAGRAM mamae 15 BLOCK DIAGRAM FOR SUPPLY VOLTAGE SYSTEM eee 16 CHASSIS DESCRIPTION ese 17 SERVICE DATA 18 TECHNICAL DATA OF KEY CS 18 WAVEFORMS OF KEY POINTS 31 SERVICE DATA OF KEY 5 nennen nennen 33 REPLACEMENT OF PARTS 36 APPENDIX 1 CIRCUIT DIAGRAM 2 PRINTED CIRCUIT BOARD DIAGRAMS 3 FINAL WIRING DIAGRAM 4 FINAL ASSEMBLY DIAGRAM SERVICE MANUAL SPECIFICATIONS Model Number 14BM18 Color system PAL4 43 NTSC3 58 NTSC4 43 SECAM RF system Sound system B G M D K VHF C1 C12 49 75 85 25MHz 168 25 216 25MHz Receiving UHF C13 C57 471 25 863 25MHz channel CATV Z1 Z7 111 167MHz 28 235 223 447 2 Programs preset 236 0 235 Antenna input 75 Q unbalanced Picture tube Approx d 280 210 Effective screen dimensions Audio output THD 7 2W 2 Power source 110 240V
21. G 01 1 10 M 11 1 Sets sound system of external SIF as the appropriate one and also sets sound system in the course of auto demo as the appropriate one 0 Changes sound system in the course of auto demo Notes Do not change the data marked with in Data column Check if the color sound systems conform to the specifications of different models after setting 14 SERVICE MANUAL STRUCTURE AND CHASSIS FUNCTION DESCRIPTION 1 STRUCTURE BLOCK DIAGRAM From Antenna po Rie mplifier SAWF EEPROM IIC BUS AT24C08 Video Microcontroller and small signal processor Amplifier Formed of Remote Remote CHOSTOTO VY01 VY09 Sensor control HS0038 Circui for Buttons On The TV z V OUT Audio Amplifier H Drive TDA7056B TDABSSO4 FBT H OUT T402 R 115V Speaker 110 240V 50 60Hz Power Supply Circuit 16V S L STR F6654 ar STR G5653 15V 5V 1 3 3V Fig 4 Structure Block Diagram for EX 1A3 Chassis Series 15 SERVICE MANUAL 2 BLOCK DIAGRAM FOR SUPPLY VOLTAGE SYSTEM VD491 190V To CRT RGB PCB VD451 45V To A100 N401 FBT VD461 16V T400 To N401 VD471 A100 N442 N100 115V VD891 VD871 16 5 5V 2 gt N441 gt A100 Bridge Rectifyin To N600B ger 9 Power Regulation Switch Filter and Contrd Circuit Transformer VD803 VD806 VD881 15V H C802 C807 STR G5653 F6654 T804 N WA Regulator Line Filter Fe
22. P 236 1 0 100 channels 2 OP NTSC NTSC color system options 1 Yes 0 No 1 Two sets of AV inputs 1 Two sets of separate AV inputs 3 OP AV2 0 Two sets of parallel AV inputs or one set of AV inputs 1 0 4 OP SVSH S Video terminal 1 Yes 0 No 1 OP1 5 OP DVD DVD component input 1 Yes 1 6 OP RGB RGB input 1 Yes 0 No 1 7 OP OSO Switch off in vertical overscan 1 0 OP AVL AVL 1 Yes 1 AV RF output 1 RF output for models with SCART jack 1 OP_RFTOAV except EX 1A 0 1 0 Monitor output for models with RCA jack OP_NOT_1 Teletext language setting OP NOT 3 2 1 OP NOT 2 1XX English Arabic 011 English Farsi OP2 010 English Russian dace 001 English Ukrainian 000 English Paneuro 5 OP_USER LOG User LOGO setting prior to CHANGHONG LOGO 1 0 Display characters can be set by the VOL buttons E 6 OP ON BLACK Power on auto test back selection 0 1 Blue 0 Black 2 7 OP FSL Slicing level for vertical sync 0 0 OP ENGLISH English 1 1 OP_FARSI Farsi or Czech 1 2 OP_ARABIC Arabic or Slovakian 1 DES 3 OP RUSSIAN Russian 1 4 OP FRENCH French 1 5 OP GERMAN German 1 6 OP ITALY Italian Indonesian or Hungarian 1 7 OP SPANISH Spanish Malay or Croatian 1 0 OP FMWS Window selection of sound pll small large window 0 OP4 continued 12 SERVICE MANUAL OP_DIRECT_SW Memory power on If turned off by the remote control then the TV is turned on by the remote control if turned I
23. PCB assembly 1 4 Side set AV PCB assembly 1 3 Front cover assembly 1 2 CRT assembly 1 4 Main PCB assembly 1 Parts Qty Remarks Final Wiring Diagram for 14BM18 V Side set AV PCB Assembly XS320 XP320 Wired Connector XS161 E Wa ME i E 8 Wired Connector 01 8 CRT RGB PCB Assembly 2 on E mn To 15 ah _ Main PCB Assembl S E y 5 GND CRT s Ground Wire I 5 rj J 5 M fo i Soldered e E 8 T 2 E g 8 5 E u A Wire Red 8 3 J _ gt ji S 8 Wire Grey a
24. age 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 device Functional Difference Between The Various IC Versions IC Version TDA 9350 9351 9352 9353 9360 9361 9362 9363 9364 9365 9366 9367 9380 9381 9382 9383 9384 9385 9386 9387 9388 9389 CVERSONION peser paszpassp 9 ono intercarrier multi standard bond demodulator 4 5 6 5 MHz ith switchable centre frequency Audio switch Automatic Volume Levelling lt a E GNE 6 88 lt lt 4 4
25. beat the cabinet or CRT since this may result in fire or explosion Never allow the TV sharing a plug or socket with other large power equipment Doing so may result in too large load causing fire 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 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 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 SAFETY SYMBOL DESCRIPTION f The lightning symbol in the triangle tells you that the voltage inside this product may be strong enough to cause an electric shock Extreme caution should be exercised when C UL VDE SERVICE MANUAL 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 This symbol tells you that the critical components identified by the FDA marking have special safety related characteristics This symbol tells you that the critical components identified by the UL marking have special safety related characteristics This symbol tells you that the critical component
26. between internal CVBS and external CVBS or Y C signals Integrated chrominance trap circuit Integrated luminance delay line with adjustable delay time Picture improvement features with peaking with variable centre frequency and positive negative overshoot ratio and black stretching Integrated chroma band pass filter with switchable centre frequency Only one reference 12 MHz crystal required for the Controller Teletext and the colour decoder PAL NTSC or multi standard colour decoder with automatic search system 18 SERVICE MANUAL 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 Controller 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 Low power start up of the horizontal drive circuit TV signal processor
27. dhesive Purity Convergence Magnet Module Deflection Yoke t Glass Cloth Tapes Fig 1 6 pole Magnet Fixed 4 pole Magnet Adjust the Angle Vertical Lines a Rotate Two Tabs At the Same Time Horizontal Lines Purity Magnet Adjustment of Magnets Convergence Magnet Assembly Fig 2 2 Convergence Adjustment Preparation Before attempting any convergence adjustment the TV should be operated for at least 15 minutes 2 1 Center convergence adjustment 2 1 1 Receive dot pattern 2 1 2 Adjust the brightness contrast controls to obtain a sharp picture 2 1 3 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 2 1 4 Turn both tabs at the same time keeping the angle constant to superimpose red and blue horizontal on the center of the screen 2 1 5 Adjust two tabs of the 6 pole magnet superimpose red blue line and green line 2 1 6 Remember red and blue movement Repeat steps2 1 3 2 1 5 until optimal convergence is SERVICE MANUAL obtained 2 2 Circumference convergence adjustment 2 2 1 2 2 2 2 2 3 2 2 4 2 2 5 2 2 6 2 2 7 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
28. e after service and adjustment SAFETY PRECAUTION WARNING REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY 1 The TV has a nominal working EHT voltage Extreme caution should be exercised when working on the TV with the back removed 1 1 Do not attempt to service this TV if you are not conversant with the precautions and procedures for working on high voltage equipment 1 2 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 1 3 The CRT if broken will violently expel glass fragments Use shatterproof goggles and take extreme care while handling 1 4 Do not hold the CRT by the neck as this is a very dangerous practice 2 ltis essential that to maintain the safety of the customer all power cord forms be replaced exactly as supplied from factory 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 4 When replacing ICs use specific tools or a static proof electric iron with small power below 35W SERVICE MANUAL 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 6 When remounting the TV chassis ensure that all guard devices such as nonmetal control buttons
29. edback Circuit V115 L801 C801 C802 N801 To HOut EEPROM 5V 1 R C Input Error Signal Regulator 3 3V V871 N100 VD882 Keyboard 110 240V 50 60Hz Fig 5 Block Diagram for EX 1A3 Supply Voltage System 16 SERVICE MANUAL 3 CHASSIS DESCRIPTION 1 General Description EX 1A3 chassis series are applied in 14BM18 respectively which uses mainly Philips advanced UOC ultimate chip TDA935X 6X 8X and l C bus controlled IC With combination of microcontroller and small signal processor the TDA935X 6X 8X series feature high integration high performance to price ratio and high reliability and advanced functions with fewer external components which provide much convenience for manufacturing and technical service 2 The EX 1A3 chassis series mainly use the following ICs and assemblies Table 3 Key ICs and Assemblies Serial Position Type Function Description No 1 N100 05 0102 Microcontroller and small signal processor UOC TDA935X 6X 8X 2 N200 AT24C08 EEPROM 4 N401 TDA8356 N6 Vertical scan output stage circuit 3 N600B TDA7056BB Sound power amplifier 4 N861 STR G5653 Power supply circuit 5 A100 TDQ 5B6M Tuner 17 SERVICE MANUAL SERVICE DATA 1 KEY ICS TECHNICAL DATA 1 1 Microcontroller and small signal processor TDA935X 6X 8X The super chips TDA935X 6X 8X are good in pins compatibility Differences among them are shown as follows TDA9351 48K PAL NTSC
30. es Page protection mode flexible page by page hardware write protection Additional protection EEPROM of 64 128 bits bit per data page SERVICE MANUAL 1 Protection setting for each data page by writing its protection bit Protection management without switching WP pin Low power CMOS e Vcc 2 7 to 5 5V operation Two wire serial interface bus compatible Filtered inputs for noise suppression with Schmitt trigger Clock frequency up to 400 kHz High programming flexibility Internal programming voltage P DSO 8 3 Self timed programming cycle including erase Byte write and page write programming between 1 and 16 bytes Typical programming time 6ms lt 10ms for up to 16 bytes High reliability Endurance 10 cycles Data retention 40 years ESD protection 4000 V on all pins 8 pin DIP DSO packages Available for extended temperature ranges Industrial Automotive 3 Block Diagram 40 2 to 85 40 to 125 C cso CSI 52 we 28 2 Pin Configuration P DIP 8 4 we SCL 5 SDA cso cSt 52 oc IEP02125 P DSO 8 3 SERVICE MANUAL 1 5 Power module STR G5653 6454R Switch mode Power Supply STR G5653 F6654 The Series STR G5653 F6654 is specifically designed to satisfy the requirements for increased integration and reliability in off line quasi resonant flyback conve
31. for various versions IC version FM PLL Version QSS Version East West N Y N Y YIN CMB1 CM 00 01 10 11 00 01 10 11 00 01 10 11 00 01 10 11 BO bits AM bit 5 0 1 0 1 Pin 20 AVL EWD AVL EWD Pin 28 AUDEEM SIFIN1 Pin 29 DECSDEM SIFIN2 Pin 31 SNDPLL SIFAGC Pin 32 SNDIR REFO AVL SNDIF REFO AMOUT AMOUT REFO Pin 35 AUDEXT AUDEXT 0550 AMOUT AUDEXT QSSO AMOUT Pin44 AUDOUT Controlled AM or audio out Notes 1 When additional external selectivity is required for FM PLL system pin 32 can be used as sound IF input This function is selected by means of SIF bit in subaddress 28H 2 The reference output signal is only available for the CMB1 CMBO setting of 0 1 For the other setings this pin is a switch output 24 SERVICE MANUAL P1 3 11 P1 6 SCL P1 7 SDA P2 0 TPMW VSSC P P0 5 P0 6 VSSA SECPLL DECDIG PH2LF PH1LF GND3 DECBG AVL EWD VDRB VDRA IFIN1 IFIN2 IREF VSC TUNERAGC AUDEEM SIFIN1 DECSDEM SIFIN2 GND2 SNDPLL SIFAGC AVL SNDIF REFO AMOUT TDA935X 6X 8X PS N2 P1 2 INTO P1 1 TO 1 1 VDDP RESET XTALOUT OSCGND VDDC VPE VDDA BO GO RO BLKIN BCLIN B2 UIN G2 YIN R2 VIN INSSW2 AUDOUT AMOUT CHROMA CVBS Y GND1 CVBSINT VP1 IFVO SVO PLLIF EHTO AUDEXT QSSO AMOUT FBISO HOUT Fig 8 Pin Confi
32. guration SDIP 64 25 1 Features SERVICE MANUAL 1 2 5 W Mono BTL Audio Amplifier with DC Volume Control TDA7056B DC volume control Few external components Mute mode Thermal protection Short circuit proof No switch on and switch off clicks Good overall stability Low power consumption Low HF radiation ESD protected on all pins 3 Block Diagram n c TDA7056B 2 General Description The TDA7056B is a mono Bridge Tied Load BTL output amplifier with DC volume control It is designed for use in TV and monitors but is also suitable for battery fed portable recorders and radios The device is contained in a 9 pin medium power package A Missing Current Limiter MCL is built in The MCL circuit is activated when the difference in current between the output terminal of each amplifier exceeds 100 mA 300 mA typ This level of 100 mA allows for headphone applications single ended input BC volume control positive output negative output PROTECTION signal power ground ground Block Diagram MSA707 Fig 9 4 Pinning Table 7 Symbol Pin Description n c 1 Not connected VP 2 Positive supply voltage VI 3 Voltage input GND1 4 Signal ground VC 5 DC volume control OUT 6 Positive output GND2 7 Power ground OUT 8 Negative output n c 9 Not connected Fig 10 Pin Configuration 26
33. ircuit Diagram for 14BM18 edis did idc ea d Abb 5 p 222095 a oa frog CRI RGB PCB For IRICO CRT only For BMCC CRT or Indonesia based LG CRT or THAI CRT or Chunghwa CRT only Ee TA UL
34. ort 3 3 or ADC3 input or PWM3 output VSSC P 9 digital ground for u Controller core and periphery P0 5 10 port 0 5 8mA current sinking capability for direct drive of LEDs 6 11 port 0 6 8mA current sinking capability for direct drive of LEDs VSSA 12 analog ground of Teletext decoder and digital ground of TV processor SECPLL 13 SECAM PLL decoupling VP2 14 2nd supply voltage TV processor 8V DECDIG 15 decoupling digital supply of TV processor PH2LF 16 phase 2 filter PH1LF 17 phase 1 filter GND3 18 ground for TV processor DECBG 19 bandgap decoupling AVLIEWD 20 Automatic Volume Levelling East West drive output VDRB 21 vertical drive B output VDRA 22 vertical drive A output IFIN1 23 IF input 1 IFIN2 24 IF input 2 IREF 25 reference current input VSC 26 vertical sawtooth capacitor TUNERAGC 27 tuner AGC output AUDEEM SIFIN1 28 audio deemphasis or SIF input 1 DECSDEMISIFIN2 29 decoupling sound demodulator or SIF input2 GND2 30 ground 2 for TV processor SNDPLL SIFAGC 31 narrow band PLL filter AGC sound IF AVL SNDIF REF O Automatic Volume Levelling sound IF input subcarrier reference output AM output HOUT 33 non controlled FBISO 34 horizontal output AUDEXT flyback input sand castle output QSSO AMOUT a EHTO 36 external audio input QSS intercarrier out AM audio output controlled PLLIF 37 EHT overvoltage protection input IFVO SVO 38 IF PLL loop filte
35. r VP1 39 IF video output selected CVBS output CVBSINT 40 main supply voltage TV processor 8V GND1 41 internal CVBS input CVBS Y 42 ground 1 for TV processor CHROMA 43 external CVBS Y input AUDOUT AMOUT 44 chrominance input SVHS INSSW2 45 2nd RGB YUV insertion input R2 VIN 46 2nd R input V R Y input G2 YIN 47 2nd G input U input 23 SERVICE MANUAL SYMBOL PIN DESCRIPTION B2 UIN 48 2 input U B Y input BCLIN 49 beam current limiter input V guard input note2 BLKIN 50 black current input V guard input note2 RO 51 Red output GO 52 Green output BO 53 Blue output VDDA 5A analog supply of Teletext decoder and digital supply of TV processor 3 3V VPE 55 OTP programming Voltage VDDC 56 digital supply to core 3 3V OSCGND 57 oscillator ground supply XTALIN 58 crystal oscillator input XTALOUT 59 crystal oscillator output RESET 60 reset VDDP 61 digital supply to periphery 3 3V P1 0 INT1 62 port 1 0 or external interrupt 1 input P1 1 TO 63 port 1 1 or Counter Timer 0 input P1 2 INTO 64 port 1 2 or external interrupt O input Notes 1 The function of pin 20 28 29 31 32 35 and 44 is dependent on the IC version mono intercarrier FM demodulator QSS IF amplifier and East West output or not and on some software control bits The valid combinations are given in table 5 Table 6 Pin functions
36. rters The series incorporates a high precise error amplifying control and drive circuit with discrete avalanche rated power MOSFET featuring fewer external components small size and standard power supply Covering the power range from below 25 watts up to 300 watts for 100 115 230 VAC inputs and up to 150 watts for 85 to 265 VAC universal input these devices can be used in a range of applications from battery chargers and set top boxes to televisions monitors and industrial power supply units Cycle by cycle current limiting under voltage lockout with hysteresis over voltage protection and thermal shutdown protects the power supply during the normal overload and fault conditions Low current startup and a low power standby mode selected from the secondary circuit completes a comprehensive suite of features The series is provided in a five pin overmolded SIP style package affording dielectric isolation without compromising thermal characteristics 1 Features Flyback Operation with Quasi Resonant Soft Switching for Low Power Dissipation and EMI e Rugged Avalanche Rated MOSFET Soft drive circuit MOSFET Adjustable MOSFET switching speed Choice of MOSFET Voltage and rDS on Full Over Current Protection no blanking e Under Voltage Lockout with Hysteresis Over Voltage Protection Direct Voltage Feedback Start up Current 100 Low Frequency Low Power Standby Operation Overmolded 5
37. s D The purity convergence magnet assembly and rubber wedges need mechanical positioning 2 For some picture tubes purity convergence adjustments are not required 1 Color Purity Adjustment Preparation Before starting this adjustment adjust the vertical sync horizontal sync vertical amplitude and focus 1 1 Face the TV set north or south 1 2 Connect the power plug into the wall outlet and turn on the main power switch of the TV set 1 3 Operate the TV for at least 15 minutes 1 4 Degauss the TV set using a specific degaussing coil 1 5 Set the brightness and contrast to maximum 1 6 Counter clockwise rotate the R B low brightness potentiometers to the end and rotate the green low brightness potentiometer to center 1 7 Receive green raster pattern signals 1 8 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 1 9 Slowly move the deflection yoke assembly forward or backward until a uniform green screen is obtained 1 10 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 SERVICE MANUAL Dummy Wedge Deflection Coil nt Rubber Wedge 29 1mm D zA S lt A
38. s identified by the C UL marking have been evaluated to the UL and C UL standards and have special safety related characteristics This symbol tells you that the critical components identified by the VDE marking have special safety related characteristics MAINTENANCE 1 Install the TV set on a stable and level surface Do not place the set near or over a radiator or heat register or where it is exposed to direct sunlight Do not install the TV set in a place exposed to rain water excessive dust mechanical vibrations or impacts Allow enough space at least 10cm between the TV and wall or enclosures for proper ventilation Slots and openings in the cabinet should never be blocked by clothes or other objects 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 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 SERVICE MANUAL ADJUSTMENTS 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 1 Color purity 2 Convergence 3 White balance Note
39. tting VG2B for 21 models 2E for 14 models Contrast Max setting MCON 30 for 21 Malaysia VG2B 3A Matsushita CRT with ferrite mask MCON 30 VG2B 30 HDOL 04 for 21 Chunghwa CRT SBRI 1F Sub brightness MBRI 30 Brightness Max SCON 20 Sub contrast MCON 39 Contrast Max SCOL 32 Sub color OP1 87 Option set byte 1 di OP2 01 Option set byte 2 TER OP3 FF Option set byte 3 SEE OP4 F6 Option set byte 4 5 76 Option set byte 5 ns OP6 1C Option set byte 6 T INIT EEPROM initialization VG2 Adjusting screen voltage with VG2 VSD Vertical output off STS0 1 2 System status byte Notes D The data marked with have been adjusted the MANUFACTURE mode Take care when in service and adjustment 2 To write in logo use the buttons to highlight an adjustment and the buttons to adjust 3 The data sheet may differ dependent on different models The data sheet may differ dependent on different CRTs for the same model 6 3 Option set With remote control system software TDA935X all options can be set in the SERVICE mode and stored in EEPROM Data related to picture sound and geometric adjustment are also stored in EEPROM 11 SERVICE MANUAL Table 2 Function Option Bit Setting Bit Item Description Data 0 OP_HOTEL Hotel mode 1 Yes 0 No 1 Channels preset 1 236 channels 1 O
Download Pdf Manuals
Related Search