Daewoo DTL-2950K, Service Manual

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CP-650 Service Manual
DTV R&D Europe 1
CONTENTS
DOCUMENT HISTORY .................................................................................................................3
1 MAIN FEATURES ..................................................................................................................4
1.1 SPECIFICATIONS ..........................................................................................................4
1.1.1 GENERAL ................................................................................................................4
1.1.2 EURO-SCART 1 (21 Pin) .........................................................................................4
1.1.3 EURO-SCART 2 (21 Pin) .........................................................................................5
1.2 CHANNEL/FREQUENCY TABLE...................................................................................6
2 SAFETY INSTRUCTION ........................................................................................................9
3 ALIGNMENT INSTRUCTIONS.............................................................................................10
3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE ....................................10
3.2 SERVICE MODE NAVIGATION....................................................................................10
3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS ........................................11
3.4 OPTION 1......................................................................................................................11
3.5 OPTION 2......................................................................................................................11
3.6 NVM DEFAULT SETTING ............................................................................................12
3.7 TV SET ALIGNMENT....................................................................................................14
3.7.1 G2 ALIGNMENT.....................................................................................................14
3.7.2 WHITE BALANCE ..................................................................................................14
3.7.3 FOCUS...................................................................................................................14
3.7.4 VERTICAL GEOMETRY ........................................................................................14
3.7.5 HORIZONTAL PICTURE CENTRING ....................................................................14
3.7.6 EAST / WEST CORRECTION................................................................................14
3.7.7 AGC........................................................................................................................15
4 IC DESCRIPTION.................................................................................................................16
4.1 UOC
III
SERIES..............................................................................................................16
4.1.1 IC MARKING AND VERSION ................................................................................16
4.2 TDA8946J STEREO AUDIO AMPLIFIER.....................................................................24
4.2.1 FEATURES ............................................................................................................25
4.3 TDA8358J VERTICAL AMPLIFIER ..............................................................................27
4.3.1 TDA8358J ..............................................................................................................27
4.4 TDA6107AJF ................................................................................................................29
4.4.1 Features .................................................................................................................29
4.4.2 Pin description ........................................................................................................29
4.5 24WC16 - 16 KB EEPROM...........................................................................................30
4.6 STR – W6754 ................................................................................................................31
4.6.1 GENERAL DESCRIPTION.....................................................................................31
4.6.2 FEATURES ............................................................................................................31
4.6.3 BLOCK DIAGRAM .................................................................................................31
4.6.4 PIN DESCRIPTION ................................................................................................32
4.6.5 MOSFET ELECTRICAL CHARACTERISTICS.......................................................32
4.6.6 ELECTRICAL CHARACTERISTICS.......................................................................33
5 CIRCUIT DESCRIPTION......................................................................................................34
5.1 BLOCK DIAGRAM........................................................................................................34
5.2 FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR ............................................35
5.2.1 Vision IF amplifier ...................................................................................................35
5.2.2 QSS sound circuit...................................................................................................35
5.2.3 FM demodulator .....................................................................................................35
5.2.4 Audio input selector and volume contro..................................................................36