Teac 3290I, Service Manual

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TCL-Thomson Electronics R&D Center (Shen
’
Zhen Lab)
Page 2 of 12
TCL-Thomson Electronics
These drawings and specifications are the property of TCL-Thomson Electronics and shall not be reproduced or copied or
used as the basis for the manufacture or sale of apparatus or devices without permission.
Table of Content
1.GENERAL .................................................................................................................................................. 3
1.1 COMMON INFORMATION
........................................................................................................... 3
1.2 HOW TO ENTER FACTORY MODE (SERVICE MENU, SERVICE MODE)
........................ 3
1.3 A FEW SPECIAL MODES: .......................................................................................................... 3
2. ALIGNMENT PROCEDURES: .............................................................................................................. 4
2.1 B+ VOLTAGE ADJUSTMENT ..................................................................................................... 4
2.2 RF AGC ADJUSTMENT ............................................................................................................... 4
2.3 CRYSTAL OSCILLATOR FREQUENCY ADJUSTMENT ....................................................... 4
2.4 SCREEN & FOCUS VOLTAGE ADJUSTMENT ....................................................................... 4
2.5 WHITE BALANCE ADJUSTMENT (NORMAL) ....................................................................... 4
2.6 ADJUSTMENT OF SUB-BRIGHTNESS .................................................................................... 5
2.7 PICTURE GEOMETRIC ADJUSTMENT
................................................................................... 5
2.8 EHT/HEW RATIO TEST
： （
TEST WITH PC PROGRAM
）
................................................. 6
2.9 X RAYS OVER VOLTAGE PROTECTING CIRCUIT TEST
................................................. 6
2.10 PS LINE POLARITIES TEST
................................................................................................. 6
2.11 PS POWER TEST
.................................................................................................................... 7
2.12 HIGH VOLTAGE AND IB VALUE LIMIT TEST( RANDOM TEST )
.................................... 7
2.13 HEATER VOLTAGE TEST ( RANDOM TEST )
...................................................................... 7
2.14 MAIN FUNCTION TEST (EG, NICAM, BTSC, TELTEXT AND ETC.)
................................ 7
3. EEPROM DATA AND ADDRESS ........................................................................................................ 8
4. WHITE BALANCE ADDRESS .......................................................................................................... 12
5. CDRH DOCUMENT ( IF AVAILABLE)............................................................................................ 12
6. REMARK.............................................................................................................................................. 12