Universum FT-81031, Руководство по обслуживанию

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CONTENTS
Safety Precautions ........................................................................................................................................... 2
TV Set switched off ........................................................................................................................................... 2
Measurements ................................................................................................................................................. 2
PERI -TV SOCKET ............................................................................................................................................ 2
SCART 1, SCART 2 .......................................................................................................................................... 2
INTRODUCTION .............................................................................................................................................. 2
SWITCH-MODE POWER SUPPLY (TDA 16846) .............................................................................................. 3
IF PART (TDA 4470/72) ..................................................................................................................................... 3-4
TUNER ............................................................................................................................................................. 4-5
SAW FILTERS ................................................................................................................................................... 5
DIGITAL TV SOUND PROCESSING (MSP 3410D) .......................................................................................... 5-6
DOLBY PRO LOGIC PROCESSOR IC (DPL 3519A) ....................................................................................... 6-7
HEADPHONE OUTPUT (TDA 1308) ................................................................................................................ 7
VIDEO OUTPUT (TDA 7265) ............................................................................................................................ 7-8
VIDEO INPUT AND OUTPUT SOURCE SWITCHING (TEA 6415) ................................................................... 8
VIDEO OUTPUT AMPLIFIER STAGE (TDA 6111Q) ........................................................................................... 8-9
VERTICAL OUTPUT STAGE (TDA 9379FA) ...................................................................................................... 9
TTEXT CONTROLLER (SDA 5550M) ............................................................................................................... 9-10
SERIAL ACCESS 32K EEPROM (24L32-W) .................................................................................................... 10-11
EPROM (M27W401) ......................................................................................................................................... 11
100Hz FEATURE BOX ...................................................................................................................................... 11
VPC32X5 (VIDEO PROESSOR) ................................................................................................................. 11
CIP3250 ...................................................................................................................................................... 12-13
SDA9400 ..................................................................................................................................................... 13-14-15
DDP3310 .................................................................................................................................................... 15-16
AK41 CHASSIS MANUAL ADJUSTMENTS PROCEDURE ............................................................................... 17
PRELIMINARY ............................................................................................................................................. 17
SYSTEM VOLTAGE AJUSTMENT ................................................................................................................ 17
AFC ADJUSTMENT ..................................................................................................................................... 17
FOCUS ADJUSTMENT ................................................................................................................................ 17
SCREEN ADJUSTMENT ............................................................................................................................. 17
IF ADJUSTMENT FOR L’MODE ................................................................................................................... 17
AK41 CHASSIS PRODUCTION MODE ADJUSTMENTS PROCEDURE ......................................................... 18
PRELIMINARY ............................................................................................................................................. 18
HORIZONTAL AND VERTICAL GEOMETRY ALIGNMENTS ........................................................................ 18
V-SHIFT ....................................................................................................................................................... 18
V-SIZE .......................................................................................................................................................... 18
H-SHIFT ...................................................................................................................................................... 18
H-SIZE ......................................................................................................................................................... 18
S-COR ......................................................................................................................................................... 18
LINRT .......................................................................................................................................................... 18
ANGLE ........................................................................................................................................................ 18
BOW ... ........................................................................................................................................................ 18
TRPEZ ......................................................................................................................................................... 18
PARAB ......................................................................................................................................................... 18
U.COR ......................................................................................................................................................... 19
L.COR ......................................................................................................................................................... 19
VIDEO ALIGNMENTS ........................................................................................................................................ 19
RGn, GGn, BGn,:WHITE BALANCE ADJUSTMENT .................................................................................... 19
RRf, GRf, BRf .............................................................................................................................................. 19
YDF . ........................................................................................................................................................... 19
AGC . .......................................................................................................................................................... 19
TLAN . .......................................................................................................................................................... 19
APS . ........................................................................................................................................................... 19
T_T ............................................................................................................................................................ 19
T_P ............................................................................................................................................................ 19
EXT3 ............................................................................................................................................................ 19
CLT ............................................................................................................................................................ 19
SERVICE ALIGNMENTS ................................................................................................................................... 20
IMPORTANT ................................................................................................................................................ 20
ADJUSTMENTS GROUOP.......................................................................................................................... 20
OPTIONS GROUP ...................................................................................................................................... 20
SYSTEM GROUP ........................................................................................................................................ 20
GENERAL BLOCK DIAGRAM OF CHASSIS AK41 ........................................................................................... 21
CIRCUIT DIAGRAMS ........................................................................................................................................ 22