Telefunken TKP2198USM Service Manual
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Telefunken TKP2198USM Service Manual

Chasis nx-56 version p
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MANUAL DE SERVICE
TKP2198USM (21F7US)
CHASIS NX-56 VERSION P
Cod. P.T.
Serie DCD5
Tamaño de pantalla
Tensión de alimentación
Consumo
(W)
Entradas
Dimensiones
(en milímetros)
Peso neto
TKP2198USM
PNE040101
EW9
Total: 21" (53,4 cm)
Visible: 20" (51 cm)
110 – 240 VCA
Máximo: 75
Stand by: <3
Sintonizador PAL-N/M, NTSC,
2xAV, YPbPr, S-Video (según
version)
Alto: 461,0
Ancho: 589,0
Prof.: 353,0
18,5 Kg

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  • Page 1 MANUAL DE SERVICE TKP2198USM (21F7US) CHASIS NX-56 VERSION P TKP2198USM Cod. P.T. PNE040101 Serie DCD5 Total: 21” (53,4 cm) Tamaño de pantalla Visible: 20” (51 cm) Tensión de alimentación 110 – 240 VCA Consumo Máximo: 75 Stand by: <3 Sintonizador PAL-N/M, NTSC, Entradas 2xAV, YPbPr, S-Video (según...
  • Page 2 Indice Notas ....................... 3 Precauciones ..................Especificaciones ..................8 Menú de service ..................15 Diagrama en bloques ................29 Funcionamiento general ............... 30 Circuitos esquemáticos ................37 Placas de circuito impreso ............... 42 Cambios por eliminación del modulo MTS ..........44 Listado de componentes .................
  • Page 3 Notas Antes de salir del menu de service, se debe llevar el valor FACTORY HOTKEY, del menu 4, a 0. Despues de esto se debe apagar el televisor, volver a encenderlo y presionar el boton Menu para verificar que se accede al menu de usuario.
  • Page 4 1、 CAUTION: Use of controls, adjustments or procedures other than those specified herein may result in hazardous radiation exposure. CA UTION: TO REDUCE THE RISK OF CAUTION ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE RISK RISK OF OF ELECTRI ELECTRIC C PARTS INSIDE.

  • Page 5: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS CAUTION: Read all of these instructions. Save these instructions for later use. Follow all Warnings and Instructions marked on the audio equipment. 1. Read Instructions- All the safety and operating instructions should be read before the product is operated. 2.
  • Page 6 PROTECTION AND LOCATION OF YOUR SET Do not use this television set near water ... for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, etc. Never expose the set to rain or water. If the set has been exposed to rain or water, unplug the set from the wall outlet and refer servicing to qualified service personnel.
  • Page 7 OPERATION OF YOUR SET 18. This television set should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply at your home, consult your television dealer or local power company. For television sets designed to operate from battery power, refer to the operating instructions.
  • Page 8 Model NX56-LA NX56-LA Item 29185 21M63US Master Data -Version -Customer ID -Destination -Brand -BOM NO. 03-B185SAE-SC31 03-DM63SAE-SC31S -Chassis Reception -Tuning [Channels Amt.] -Tuning [Technology] -Tuning [Indication] Channel Channel -Frequency Bands Antenna AND Cable Antenna AND Cable -IF Frequency 45.7MHz 45.7MHz -TV Systems (Color+ Sound) PAL M/N NTSC M PAL M/N NTSC M...
  • Page 9 Model NX56-LA NX56-LA Item 29185 21M63US -Nicam -America Stereo (MTS,BTSC,MPS) -America SAP -Korea Stereo -Thai Bilingual -Super Woofer -AVL -Sound Control [General] Volume Mute -Sound Control [Special] Treble Bass Balance Equalizer Smart Sound * modes Others -Speakers Quantity User Interface English/Portugal/Espanol English/Portugal/Espanol -Menu Language...
  • Page 10 Model NX56-LA NX56-LA Item 29185 21M63US -Front Cabinet Color -Middle Cabinet Color -Rear Cabinet Color -Local Controls Front Mains Switch CH+ CH- VOL+ VOL- TV/AV Menu Auto Search -Local Controls Top CH+ CH- VOL+ VOL- TV/AV Menu Auto Search -Indicator RC Received LED Standby LED Remote Controller...
  • Page 11 Model NX56-LA NX56-LA Item 29185 21M63US Guarantee Doc. Warning Label Approbation Label Others -Languages DFU -Indication on BACKOVER Made-in in family sheet FCC/Elect Shock Caution Label CE/Elect Shock Caution Label Warning Label Others Approbation IEC65 IEC65 Miscellaneous -Mains Voltage 100-240V 100-240V -Mains Frequency 50/60Hz...

  • Page 12: Alignment Procedure

    NX56-AP&NX56B-AP Chassis Alignment Procedure Disclosure Proprietary Information: These drawings and specifications are the NX56-AP&NX56B-AP Chassis Name Serial No. 2008-01-18 Page 1 of 17 Issued on Page 2009-04-24 Updated on Version...
  • Page 13 copied or used as the basis for the manufacture or sale of apparatus or Version Information: Version states by two Arabic Numbers, which is separated by one dot, e.g. 1.2. The first number “1” means the version of approved file, the second one ”2” means the version of draft. NX56-AP&NX56B-AP Chassis Name Serial No.

  • Page 14: Revision History

    Revision History Model No. Status Date Comment Prepared by Luo MJ 2008-01-18 Ver0.1 29A41/NX56 Checked by 03-BA41UAE-TH32（29A41/NX56） Released by Ver1.0 Prepared by Luo MJ 2008-01-18 1. Updated the B+ specs accord All NX56-AP with 21” tube. Checked by Guo Guangyuan 2008-01-23 chassis 2.
  • Page 15 1.1. The way to enter P-Mode a) Method one Switch on the TV set. Press the “MENU” key on RC to show the “PICTURE” OSD menu. Move the cursor to “Contrast” item then press the “9”, “7”, “3”, “5” key continuously on RC within 3 seconds then enter P-Mode.
  • Page 16 1.4. The adjustment page list an RC key function on P-Mode: RC key Item Description Screen voltage adjustment Adjust the VG2 voltage page Vertical geometry Vertical geometry page Horizontal geometry Horizontal geometry page White Balance Adjustment White Balance Setup and option page 4 Setup and option page 5 Setup and option page 6 Setup and option page select...
  • Page 17 Flowchart of alignment procedure B+ adjustment Electrical RF AGC properties adjustment checking for chassis Parameter setup White balance Aging Adjustment of Adjustment of Adjustment focus voltage screen voltaget PAL geometry NTSC Set shopping QC checking adjustment geometry status adjustment 1) B+ Adjustment 2) RF AGC Adjustment 3) Screen &...

  • Page 18: Adjustment Description

    3. Adjustment description Note: Alignment should be done after 3 minutes warm up of TV. 3.1 B+ Voltages 1. All relevant connectors and modules must be connected and inserted. 2. Main voltage is at 220VAC, 50Hz.（voltage range:110VAC~240VAC,50Hz） 3. Connect a voltmeter to B+ (Cathode of D808 for NX56 chassis or cathode of D833 for NX56B chassis) and switch on the set.
  • Page 19 3.2 RF AGC alignment 3.2.1 Method 1 A. Connect the detector as shown below (Picture 3.2) to collector of Q101. B. Receive a grey scale signal with 70dBμV amplitude. C. Enter P-Mode, press “6” key on RC to select “AGCT”. D.

  • Page 20: White Balance Adjustment

    3.4 White Balance Adjustment 1. Input a black and white pattern to RF input. 2. Enter P-Mode, press key “3” to select white balance adjustment menu. 3. Use the color analyzer to measure the black side of the screen. Adjust the value of “RC”,”GC”...

  • Page 21: Sub Brightness Adjustment

    3.5 Sub brightness adjustment 1. Input eight steps gray signal. 2. Press key “3” to enter sub-brightness adjustment. 3. At dynamic state, adjust “BRTC” until the secondary gray bar just to be seen. (like picture 3.5.) The 2nd gray scale Picture 3.5 3.6 Picture Geometry adjustment 3.6.1 Vertical geometry adjustment...
  • Page 22 3. On producing, please use the “AUTO OFFSET” (On page “2”) function to easy the geometry adjustment of NTSC signal. When finished the PAL signal geometry adjustment, press “2” key to enter page “2” to select “AUTO OFFSET” item, press “►” key to active the automatic offset function.
  • Page 23 1. Enter P-Mode, press key “4” to select page “4”.Set the corresponding item to require value. See below table 3.7.1 for detailed description. Table 3.7.1: Producing parameter setup and option page “4” OSD menu Default Value Description Remark 0=Aging mode off WARM UP STATUS Set aging mode 1=Aging mode on...
  • Page 24 B. Picture set to “Standard” status. (Brightness=50, Contrast=50, Colour=50, White tone =Normal.) C. Sound set normal.(Volume=30,Balance=50.) 2). Set the user picture and sound curve value A. Brightness curve: OSD menu Default Value Description Remark BRI0 Set the minimal brightness when user Brightness=0 Set to 3 BRI50 Set the brightness when user Brightness=50...
  • Page 25 2. Enter P-Mode, press key “5” to select page “5”. Set the corresponding item to require value. See below table 3.7.2 for detailed description. Table 3.7.2: Producing parameter setup and option page “5” OSD menu Default Value Description Remark 0=EHT tracking only on vertical Track.
  • Page 26 38.90 IF frequency Select the IF frequency AGCS AGC speed Don’t adjust, use default AGNE Audio gain Don’t adjust, use default 4. Enter P-Mode, press key “7” to select page “7”. Set the corresponding item to require value. See below table 3.7.4 for detailed description. Table 3.7.4: Producing parameter setup and option page “7”...
  • Page 27 RUSSIAN* Russian enable FRENCH* French enable FARSI* Farsi enable 0=ALPS tuner TUNER TYPE* Select tuner type 1=TCL tuner AV no signal within 10 minutes 0=Disable AV STANDB automatic standby 1=Enable 0=Follow TV AVOUT FOLLOW AV output source follow 1=Follow source Table 3.7.6: Producing parameter setup and option page “8”(For AP3 version) OSD menu Default Value...
  • Page 28 value. See below table 3.7.7 for detailed description. Table 3.7.7: Producing parameter setup and option page “9” OSD menu Default Value Description Remark 0=Disable Black stretch enable 1=Enable 0=15IRE Black Stretch depth 1=30IRE 0=12% Black area to switch off the 1=20% black stretch 2=6%...
  • Page 29 Chapter II Block Diagram of NX56 July5,2008 Bridge Power B 33V Q501 220VAC Rectifier Transistor Transformer +-14V Q503 INPUT DB801- Q801 T801 Q505 DB804 2SK2996 IC801 Photo-Coupler ▽ NCP1337 IC803 Antenna R/G/B P201 V.AMP. Tuner IF AMP SAW Z2O1 IC301 TU101 Q101 Pin44-46...

  • Page 30: Brief Introduction

    NX56 Chassis Signal Processing Introduction Brief introduction For different market requirements, our design it in two versions, one is for Latin America, we call the chassis as NX56-LA, the another one is for Asia Pacific Area, we call the chassis as NX56-AP. NX56-LA and NX56-AP adopt different UOC, The UOC for Latin America have CCD-Chip and BTSC function, so added AN5832SA to realize BTSC, but the UOC for Asia Pacific region does not have the two functions but...
  • Page 31 RF Section Tuner Tu101 receive the radio frequency signal, after inside circuit to do signal receiving, and signal amplifying. The amplified high frequency signal accompany with the high frequency oscillation voltage oscillated by set oscillator input to the mixer. The IF picture signal and sound signal formed in mixer and output from mixer, then send to picture IF processing circuit.
  • Page 32 Small Signal Processing Section Small signal processing section is the IF (intermediate frequency) signal across saw filter send in the pin12 and pin13 of IC201. The VIFIN signal through built-in PLL DEMOD, sound trap, video amplifier and synchronous detector processing, get the color video broadcast signal and 2 sound IF signal.
  • Page 33 (Fig3. Block Diagram of IC201.) Horizontal Scanning Section The horizontal drive signal send out from pin 56 of IC201, Q401 is horizontal driving transistor, coupled by horizontal driving transformer T402 , to control the horizontal output transistor working in switch on and off situation, get good linearly and enough amplitude of saw-tooth wave current to drive horizontal deflection yoke scanning.
  • Page 34 Vertical Scanning Section Vertical scanning section adopted STV8172A vertical deflection booster, we use as differential-output driver. The vertical raw-tooth wave signal sends out from pin14/15 of IC201 VDA/VDB. The two differential signal input pin 1 and 7 of STV8172A IC301. Pin2(+14v) and Pin7(-14v) of IC301 is power supply which come from the main power transformer.

  • Page 35: Power Supply Section

    Audio Power Amplifying Section Power Supply Section AC supply 220V/110v through filtering network and rectifying circuit and get 300Vdc voltage. LF801/LF801A and CX802 makes up a differential mode rejection, LF802 and CY801,CY802 makes up a common mode rejection network. D801-D804 is rectifying network. 300Vdc voltage supply pin3 of T801, also through R804 send to pin8 of IC801 NCP1337.
  • Page 44 MODIFICACIONES ELIMINACION MODULO MTS EN CHASIS NX56 CODIGO DESCRIPCION PROVEEDOR DESCRIPCION ESPAÑOL DETALLE CON MODULO SIN MODULO POSICION 41-WJ0060-B00 WIRE BARE JUMPER ALAMBRE DE COBRE ESTAÑADO WIREBAREJUMPER 6MM JB902 41-WJ0060-B00 WIRE BARE JUMPER ALAMBRE DE COBRE ESTAÑADO WIREBAREJUMPER 5MM JB901 11-SC1815-YBX TR 50VV 150MA_A NPN 0.4W 80MHZ TO-92 2SC TRANSISTOR 2SC1815Y;...
  • Page 45 S/T SCREW HA 6X30 TORNILLO PARA PLASTICO ZINCADO 6 X 30 MTJE. TRC MTG CRT & F.CAB ENSAMBLE 67-L46102-0A09A DEC LOGO TELEFUNKEN -- 00 9A 00 R=Y PLACA DE MARCA TELEFUKEN 21" ENSAMBLE 67-X12668-0E0 SPRING CRT 6MMX40MMX0.5MM RESORTE DE ACERO TRC...
  • Page 46 MODELO: TKP2198USM (Chasis: NX56 VER. P) Seleccionar Proceso CODIGO DESCRIPCION PROVEEDOR DESCRIPCION ESPAÑOL CANT. UNI. POSICION OBSERVACIONES TOTAL 100 PUENTES R215;R240;R241;R245;R247;R274;R275;R256; MAIN 18-CB0101-JNX RES. C.F. 100 OHM 1/6W +/-5% RF PC 100 OHM 1/6W +/-5% R272;R603A;R604A;R250;R101;R102;R208;R2 14;R246;R239 R002;R255;R254;R258;R271;R844;R852;R415; MAIN 18-CB0102-JNX RES.
  • Page 47 MODELO: TKP2198USM (Chasis: NX56 VER. P) Seleccionar Proceso CODIGO DESCRIPCION PROVEEDOR DESCRIPCION ESPAÑOL CANT. UNI. POSICION OBSERVACIONES TOTAL 100 PUENTES MAIN 41-0J0000-00X WIRE BARE JUMPER ALAMBRE DE COBRE ESTAÑADO 0,0002 J221;J234 2 WIREBAREJUMPER 9MM MAIN 41-0J0000-00X WIRE BARE JUMPER ALAMBRE DE COBRE ESTAÑADO 0,0002 J810;J809...
  • Page 48 MODELO: TKP2198USM (Chasis: NX56 VER. P) Seleccionar Proceso CODIGO DESCRIPCION PROVEEDOR DESCRIPCION ESPAÑOL CANT. UNI. POSICION OBSERVACIONES TOTAL 100 PUENTES MAIN 18-FG0339-JSX RMOF 3.3OHM +/-5% 2W R=Y RF MOF 3,3 OHM 2W 5% R425A MAIN 25-BCB101-M1X CAP.ELE 5MM 100UF 16VV 5X11 85 / CEAP 100 UF 16V +/-20% C219;C243;C252;C253;C844;C842...
  • Page 49 UOC-TOP-64 N1 series Versatile signal processor for CRT TV applications Rev. 0.11 — 25 January 2007 Product data sheet 1. General description The UOC-TOP-64 series is a very flexible concept which offers attractive solutions for 1f TV receivers with CRTs. This new concept offers a complete range of products with the right price level to cover TV receivers from basic mono 14 inch sets up to the best featured large and/or wide screen AV-stereo TV sets.
  • Page 50 UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV 2. Features 2.1 Analog Video Processing 2.1.1 Overview of available features (AV-110/90 and Mono-110 concept) Multi-standard vision IF circuit with alignment-free PLL demodulator Internal (switchable) time-constant for the IF-AGC circuit Switchable group delay correction and sound trap (with switchable centre frequency) for the demodulated CVBS signal Separate Second Sound IF output or FM demodulator output without de-emphasis...
  • Page 51 UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV Picture improvement features with peaking (with switchable centre frequency, depeaking, variable positive/negative peak ratio, variable pre-/overshoot ratio and video dependent coring), dynamic skin tone control, gamma control and blue- and black stretching.
  • Page 52 UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV 2.2 Micro-Controller 80C51 m-controller core standard instruction set and timing 0.9766 ms machine cycle maximum of 80 k x 8-bit late programmed ROM maximum of 3 k x 8-bit Auxiliary RAM C byte level bus interface.
  • Page 53 UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV 2.4 Display 2.4.1 Features of the OSD-only devices Up to 4 character sets with 256 characters each (size 16 pixels x 18 lines) Enhanced OSD modes 50Hz/60Hz display timing modes Serial and Parallel Display Attributes Single/Double Width and Height for characters Scrolling of display region...

  • Page 54: Quick Reference Data

    UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV 3. Quick reference data Table 1: Quick reference data SYMBOL PARAMETER MIN. TYP. MAX. UNIT Supply analogue supply voltage VSP − − supply current (5.0 V) digital supply VSP / analogue supply periphery −...

  • Page 55: Block Diagram

    UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV 5. Block diagram µ-PROCESSOR / TELETEXT DECODER / OSD BCLIN BLKIN/ SVM/ VGUARD **) The mono-110 version has only volume control and no tone control functions Fig 1. Block diagram of the “AV-110/90” and “MONO-110” TV processor <Document ID>...
  • Page 56 UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV µ-PROCESSOR / TELETEXT DECODER / OSD BCLIN BLKIN/VGUARD Fig 2. Block diagram of the “MONO-90” TV processor <Document ID> © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 0.11 — 25 January 2007 10 of 230...

  • Page 57: Pinning Information

    UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV 6. Pinning information Table 6: Pinning information SYMBOL DESCRIPTION SDIP64 AV-110 AV-90 Mono-90 Mono-110 − IFVO/SVO/PIP IF video output / selected CVBS output / PIP output − − IFVO/SVO IF video output / selected CVBS output supply voltage TV processor (+5 V) VCC8V 8 Volt supply for audio switches...
  • Page 58 UOC-TOP-64 N1 series NXP Semiconductors Signal processor for CRT TV Table 6: Pinning information SYMBOL SDIP64 DESCRIPTION AV-110 AV-90 Mono-90 Mono-110 GND5 ground OTP Programming Voltage VDDA1(3.3V) supply voltage − BO/PBOUT Blue output / P output − − Blue output −...

  • Page 59: Main Features

    STV8172A ® Vertical Deflection Booster for 3-A TV/Monitor Applications with 75-V Flyback Generator PRODUCT PREVIEW Main Features Power Amplifier HEPTAWATT (Plastic Package) Flyback Generator ORDER CODE: STV8172A Stand-by Control Output Current up to 3 App Thermal Protection Description Input (Non Inverting) The STV8172A is a vertical deflection booster Output Stage Supply Output...

  • Page 60: Absolute Maximum Ratings

    Absolute Maximum Ratings STV8172A Absolute Maximum Ratings Symbol Parameter Value Unit Voltage Supply Voltage (pin 2) - Note 1 Note 2 Flyback Peak Voltage - Note 2 Voltage at Pin 3 - Note Note 3 Note 6 -0.4 to (V + 3) Amplifier Input Voltage - Note...

  • Page 61: Electrical Characteristics

    STV8172A Electrical Characteristics Electrical Characteristics = 34 V, T = 25°C, unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig. Supply Operating Supply Voltage Range (V Note 8 Pin 2 Quiescent Current = 0, I Pin 6 Quiescent Current = 0, I = 0, V =35v...
  • Page 62 Electrical Characteristics STV8172A Figure 1: Measurement of I and I 2.2V 39kW STV8172A 5.6kW (a): I2 and I6 measurement (b): I1 measurement Figure 2: Measurement of V 2.2V STV8172A - I5 Figure 3: Measurement of V and V I3 or I5 STV8172A 2.2V (a): V...

  • Page 63: Application Hints

    STV8172A Application Hints Application Hints The yoke can be coupled either in AC or DC. DC-coupled Application When DC coupled (see Figure 4), the display vertical position can be adjusted with input bias. On the other hand, 2 supply sources (V and -V ) are required.

  • Page 64: Ripple Rejection

    Application Hints STV8172A 4.1.1.1 Centering Display will be centered (null mean current in yoke) when voltage on pin 7 is (R is negligible): æ ö ´ ------------------------ ç --------------------- - ÷ è ø 4.1.1.2 Peak Current – V M V m ´...
  • Page 65 STV8172A Application Hints AC-Coupled Applications In AC-coupled applications (See Figure 6), only one supply (V ) is needed. The vertical position of the scanning cannot be adjusted with input bias (for that purpose, usually some current is injected or sunk with a resistor in the low side of the yoke). Figure 6: AC-coupled Application Output (47 to 100µF)
  • Page 66 Application Hints STV8172A performs an integration of the parabolic signal on C , therefore the amount of S correction is set by the combination of C and C Application with Differential-output Drivers Certain driver ICs provide the ramp signal in differential form, as two current sources i and i with opposite variations.

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