COLOR TELEVISION RECEIVER Chassis : S51A Model : WF24W6VN3X/XEF WF28W6VN3X/XEF WF32W6VN3X/XEF COLOR TELEVISION RECEIVER CONTENTS Precautions Specifications and IC Data Disassembly and Reassembly Alignment and Adjustment Troubleshooting Exploded View and Parts List Electric Parts List Block Diagram PCB Layout Diagram...
Precautions 1. Precautions Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays. 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are replaced. Restore any missing (READING SHOULD NOT BE ABOVE protective shields.
Precautions 1-1 Safety Precautions (Continued) 9. High voltage is maintained within specified 15. Observe the original lead dress, especially limits by close-tolerance, safety-related near the following areas: Antenna wiring, components and adjustments. If the high sharp edges, and especially the AC and high voltage exceeds the specified limits, check voltage power supplies.
Precautions 1-2 Servicing Precautions Warning1: First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions. Warning2: An electrolytic capacitor installed with the wrong polarity might explode. 1.
Precautions 1-3 Precautions for Electrostatically Sensitive Devices (ESDs) 1. Some semiconductor (“solid state”) devices 5. Use only a grounded-tip soldering iron when are easily damaged by static electricity. Such soldering or unsoldering ESDs. components are called Electrostatically Sensitive Devices (ESDs); examples include 6.
Specifications and IC Data 2. Specifications and IC Data 2-1 Specifications T e le v is io n S y s te m : MO D E L S YS T E M P AL -I (U H F ) P AL -I (V H F /U H F ) P AL -B /G ,S E C AM-B/G P AL -B /G ,D /K ,S E C AM-B /G ,D /K...
Specifications and IC Data 2-2 IC Line Up L O C NO S pe cification D escription R e m arks H IC 101 P AP 10 3T IF P R E -AMP T D A88 44 P AL /S E C AM/NTS C /S E C AM-L IC 20 1 T D A88 43 P AL /NT S C...
Specifications and IC Data 2-3 Semiconductor Base Diagrams ELECTROLYTIC- CONDENSER DIODE TDA4665(Pin 16) TDA837X(Pin 56) Z8933112PSC(Pin 42) X24CO4P(Pin 8) TDA8395(Pin 16) TDA4665(Pin 16) TRANSISTOR SAW-FILTER TRANSISTOR G1962 2SD1651 UPC574J K2950M 2SD1650 K9253M KSD5072 KSA815-Y KA33V KSD5071 KSA539-Y KSD1711 E B C TRANSISTOR TRANSISTOR TDA8133...
Disassembly and reassembly 3. Disassembly and Reassembly 3-1 Back Cover Removal 1. After removing the 7 screws, pull the cabinet backwards.
Disassembly and reassembly 3-2 Main Board Removal 1. Separate the TBC-wire 2P connector from GT501,GT502. 2. Separate the CRT Assay from the CRT socket. 3. Remove the Anode Cap from the CRT. 4. Separate the D-Coil Connector from CN802. 5. Separate the AC cord from CN801. 6.
Disassembly and reassembly 3-3 Speaker Removal 1. Remove the speaker by pressing the tension rib. 1. Separate the speaker wires from D-coil (located on the bottom to the right side). 2. Remove the screws.
Disassembly and reassembly 3-4 CRT Removal 1. Remove the 4 nuts mounting the CRT to the front cabinet. Pull the CRT backwards. 2. Caution: Because of the high vacuum and large surface area of the picture tube, be careful while handling it: (1) Always lift the picture tube by grasping it firmly around the faceplate, (2) Never lift the tube by its neck.
Alignment and Adjustments 4. Alignment and Adjustments 4-1 Preadjustment 4-1-1 Factory Mode 4-1-3 When CRT Is Replaced 1. Make the following adjustments AFTER set- 1. Do not attempt these adjustments in the Video ting up after setting up purity and conver- Mode.
Alignment and Adjustments 4-2-2 Main Adjustment Parameters FUNCTION RANGE AUTO GAIN CONTROL 0 - 63 VOLTAGE CONTROLLED OSCILLATOR 0 - 127 SUB BRIGHTNESS 0 - 23 SUB CONTRAST 0 - 23 SUB COLOUR 0 - 23 S-CORRECTION 0 - 63 RED DRIVE GAIN 0 - 63 BLUE DRIVE GAIN...
Alignment and Adjustments FACTORY MODE VALUE INITIAL INITIAL INITIAL 2 (CH) 1 (FIXED) 20(FIXED) 80(FIXED) 31(FIXED) 7(FIXED) 31(FIXED) 5(FIXED) 8(FIXED) 11(FIXED) 31(FIXED) 31(FIXED) 3 (FIXED) 0 (FIXED) 10(FIXED) 31(FIXED) 4-2-3 AGING Mode (Reference Only) This pattern is used for pre-heating the CRT during manufacturing--it is accessed in the factory by twice pressing the “FACTORY “...
Alignment and Adjustments 4-2-4 Option Byte Table Option Byte 1.ZOOM MODE : NORMAL/ZOOM/16:9 2.AUDIO MODE : NICAM STEREO 3.ONE CHIP : TDA8844 4.LED OPTION : NORMAL 5.LANGUAGE : WEST ENG/GER/FRA/DUT/SPA/ITA/SWE 6.SYSTEM: CX 7.ATS OPTION : ON 8.FIELD POL : FIELD POS OPTION NOTE PLU/NOR/ZOOM/16:9...
Alignment and Adjustments Alignment and Adjustments 4-2-5 RESET The Reset Mode is used during factory inspection. Function Reset: Channels Add/Erase Language Last condition Station name Clear 4-3 Other Adjustments 4-3-1 General 4-3-2 Automatic Degaussing 1. Usually, a color TV needs only slight touch- A degaussing coil is mounted around the pic- up adjustment upon installation.
Alignment and Adjustments Alignment and Adjustments 4-3-3 High Voltage Check 4-3-6 Purity Adjustment 1. Warm up the receiver for at least 20 minutes. CAUTION: There is no high voltage adjustment on this chassis. The B+ power supply must be set to +155 volts (Full color bar input and normal picture level).
Alignment and Adjustments Alignment and Adjustments 4 Pole Magnet 2 POLE PURITY 2 Pole Magnet 6 Pole Magnet Clamper Screw YOKE CLAMP SCREW 6 POLE CONVERGENCE 4 POLE CONVERGENCE Fig. 4-2 Convergence Magnet Assembly Vertical Green Belt 31m/m Fig. 4-3 Center Convergence Adjustment 4-3-7 White Balance Adjustment (a) Set up 1.
Alignment and Adjustments Alignment and Adjustments 4-3-8 Center Convergence Adjustment 5. Turn the both tabs at the same time, keeping 1. Warm up the receiver for at least 20 minutes. the angle constant, and superimpose the red and blue horizontal line in the center of the 2.
Alignment and Adjustments Alignment and Adjustments 4-3-10 Geometry Adjustment 1. Input a lion head pattern. 2. Adjus t PVS s o that the pic ture is vertically centered. 3. Adjus t with PVA s o that the top and bottom margins of the pic ture are 4. 4.
Troubleshooting 5. Troubleshooting 5-1 No Video (Raster On, No Sound) Measure the Check/Replace Voltage of each of, 8 pins TU101, HC101 of TU101 Check/Replace Check IC901 IC901,IC201,IC902 ,IC701, Pins 39, 40 Audio Module See "No Sound" See "No Video" (Video OK) (Sound OK)
Troubleshooting 5-2 No Power Check/Replace Check the 130V, IC801, D802 12.7V B + Lines Check/Replace Check IC804 IC804(KA7630),DZ905,DZ804 Pin 9 (5V) Check IC901 Check/Replace Pin 8 (4V). IC901 Check IC901 Check/Replace Pin 18 ; Stand-by : 0V IC901(µ-com) Normal : 5V Check/Replace Check IC201, IC201, Q402, Q403...
Troubleshooting 5-6 SMPS (Power Supply) Does Not Function (1) W he n F 802 is op en : C he ck/Replace F 8 02 , IC 80 1 , D 80 2. (2) W he n F 802 is okay, but SMP S doe s n ot fu nction: C he ck/Replace D Z80 1 , D Z8 08 , IC 80 2 , D Z8 05 .
Wiring Diagram 10. Wiring Diagram 10-1 S51A ANODE C R T ASSY-PWB FRONT,A/V CN701A CN05A A S S Y -P W B M A IN CN501B CN06A FOCUS SOCKET SW801 SCR EE N S O U ND A MP CN602 P IP /T T X S MP S MO D U L E...