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Related Manuals for Seg WATSON FA-3631T
Summary of Contents for Seg WATSON FA-3631T
- Page 1 WATSON FA-3631T MODEL SERVICE MANUAL...
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Page 3: Table Of Contents
CONTENTS SAFETY PRECAUTIONS..........................2 PERI-TVSOCKET ............................2 INTRODUCTION............................2 SMALL SIGNAL PART WITH STV2248:....................3 Vision IF Amplifiers .......................... 3 QSS Sound Circuit (QSS Versions) ....................3 AM Demodulator..........................3 FM Demodulator and Audio Amplifier (Mono Versions): ..............3 Video Switching ..........................3 Synchronization Circuit........................ -
Page 4: Safety Precautions
DO NOT CHANGE ANY MODULE UNLESS THE SET IS SWITCHED OFF The mains supply part of the switch mode power supply's transformer is live. Use an isolating transformer. The receiver complies with the safety requirements. SAFETY PRECAUTIONS The service of this TV set must be carried out by qualified persons only. Components marked with the warning symbol on the circuit diagram are critical for safety and must only be replaced with an identical component. -
Page 5: Small Signal Part With Stv2248
2 SMALL SIGNAL PART WITH STV2248: STV2248 video processor is essential for realizing all small signal functions for a color TV receiver. 2.1 Vision IF Amplifiers The vision IF amplifier can demodulate signals with positive and negative modulation. The PLL demodulator is completely alignment-free. -
Page 6: Chroma And Luminance Processing
S2.7 Chroma and Luminance Processing: The chroma decoder is able to demodulate PAL, NTSC and SECAM signals. The decoder dedicated to PAL and NTSC sub-carrier is based on a synchronous demodulator, and an Xtal PLL locked on the phase reference signal (burst). The SECAM demodulation is based on a PLL with automatic calibration loop. -
Page 7: Tuner
3 TUNER Either a PLL or a VST tuner is used as a tuner. UV1316 (VHF/UHF) is used as a PLL tuner. For only PALM/N, NTSC M applications UV 1336 is used as the PLL tuner. UV 1 3 1 5 (VHF/UHF) is used as a VST Tuner. Channel coverage of UV1316: OFF-AIR CHANNELS CABLE CHANNELS... -
Page 8: Serialaccess Cmos 8K Eeprom 24C08
8 SERIAL ACCESS CMOS 8K EEPROM 24C08 The 24C08 is a 8Kbit electrically erasable programmable memory (EEPROM), organized as 4 blocks of 256*08 bits. The memory is compatible with the PC standard, two wire serial interface which uses a bi-directional data bus and serial clock. 9 SAW FILTERS Saw filter type Model:... -
Page 9: Stv224X Video Processor
LI-CONTROLLER VERSION TABLE FEATURE DESCRIPTION NO TXT MONO 1C ST92195C 48KSW-A NO TXT MONO 1C ST92185BSW-B 1 P MONO 1C ST92195C 48KSW-D 1 P MONO / STR 1C ST92195C 48KSW-E 7 P MONO/STR/WSS 1C ST92195C 64K SW-F 1 P MONO/STR/APS/WSS 1C ST92195C 64K SW-G 10.2 STV224X Video processor: The STV2246/2247/2248 are fully bus controlled ICs for TV including PIF, SIF, luma, Chroma and deflection processing. -
Page 10: Uv1315, Uv1316.Uv1336
10.3 UV1315, UV1316, UV1336 General description ofUV1315: The U V 1 3 1 5 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L', I and I'. Features of UV1315: •... -
Page 11: Tda2822
General description of UV1336: UV1336 series is developed for reception of channels broadcast in accordance with the M, N standard. Features of UV1336: • Global standard pinning • Integrated Mixer-Oscillator & PLL function • Conforms to CISPR 13, FCC and DOC (Canada) regulations •... -
Page 12: Uc3842/3
10.6UC3842/3 General description: DESCRIPTION TheUC3842/3/4/5family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes With a minimal external parts count. Internally implemented circuits include under voltage lockout featuring start-up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. -
Page 13: Saw Filter's List
Saw filter's list: K2962/K2966 VIDEO AUDIO G1975M PALBG K2966M PS BG DK J1981 PAL 1 1' K2966M PS BG DK K' 1 1" K2962M L9653 PS BG DK K- L L PINNING 1 . Input 2. Input-ground 3. Chip carrier-ground 4. -
Page 15: Ak36 Titanium Teletext-Language Groups
AK36/TITANIUM TELETEXT- Languages Groups GROUP 1 -WEST • ENGLISH • FRENCH • SWEDISH • CZECH • GERMAN • PORTUGUESE • ITALIAN • RUMANIAN GROUP 2 - WEST / EAST • POLISH • FRENCH • SWEDISH • CZECH • GERMAN • SERBIAN •... -
Page 16: Ak36 Chassis Manualadlustment Procedure
AK36 CHASSIS MANUAL ADJUSTMENT PROCEDURE In order to enter service menu, first enter the main menu and then press the digits 4, 7, 2 and 5 respectively. To select adjust parameters, use A o r y buttons. To change the selected parameter, use < or > buttons. Selected parameterwill be highlighted. -
Page 17: White Balance Adjustment
USING COLOUR BUTTONS ON SERVICE MENU RED BUTTON (For Stereo models only): It switches the AVL to ON or OFF mode on service menu. AVL word is visible on service menu when AVL is on. GREEN BUTTON : It switched the PICTURE MODE to 4:3 or 16:9 on service menu. It is useful! when it is necessary to adjust 16:9 picture mode vertical size. -
Page 19: Option Settings
OPTION SETTINGS Select concerned OPTION from service menu. To change a bit on selected option press the same number from remote controller. So this bit will be changed from 1 to 0 or from 0 to 1 . If any option is selected on service menu you will see an indicator row shows you the bit numbers. -
Page 20: Op5-Channel Tables
OP4 TV Features NOTE BIT-7 1 , Headphone is available (for STEREO models) Stereo Models only. 0, Headphone is not available 1 if 1 HP line is visible on sound Menu. BIT-6 1 , Arabic/Persian is available in menu languages 0, Arabic/Persian is not available in menu languages BIT-5 1 , Hebrew is available in menu languages...
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