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P/N:TCP520VEF0
Service Manual
COLOR Television
CHASSIS : CP-520V
Model : DTX-21G2/21B4/21U7
Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center.
Dec. 2006
CP-520V Service Manual
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 10
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 AGC 14
4 IC DESCRIPTION 15
4.1 UOC III SERIES 15
4.1.1 IC MARKING AND VERSION 15
4.1.2 BLOCK DIAGRAM 16
4.1.3 PINNING 17
4.1.4 FEATURES 20
4.2 LA42032 STEREO AUDIO AMPLI FIER 23
4.2.1 FEATURES 24
4.3 LA78040 VERTICAL AMPLIFIER 26
4.3.1 FEATURES 26
4.4 24WC16 - 16 KB EEPROM 28
4.5 STR - W6754 29
4.5.1 GENERAL DESCRIPTION 29
4.5.2 FEATURES 29
4.5.3 BLOCK DIAGRAM 29
4.5.4 PIN DESCRIPTION 30
4.5.5 CONTROL PART - ELECTRICAL CHARACTERISTICS 30
1
CP-520V Service Manual
5 CIRCUIT DESCRIPTION 32
5.1 BLOCK DIAGRAM 32
5.2 FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR 33
5.2.1 Vision IF amplifier 33
5.2.2 QSS sound circuit 33
5.2.3 FM demodulator 33
5.2.4 Audio input selector and volume contro 34
5.2.4.1 STEREO AND AV STEREO VERSIONS 34
5.2.4.2 MONO VERSIONS 34
5.2.5 CVBS and Y/C input signal selection 34
5.2.5.1 ALL VERSIONS 34
5.2.6 Synchronisation circuit 35
5.2.7 Horizontal and vertical drive 36
5.2.8 Chroma, luminance and feature processing 36
5.2.9 Colour decoder 37
5.2.10 RGB output circuit 38
5.2.11 I2C-BUS USER INTERFACE DESCRIPTION 40
5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSOR 40
5.3.1 Supported standards 41
5.4 FUNCTIONAL DESCRIPTION SOUND PROCESSOR 42
5.4.1 The UOC III TV Sound Concept 42
5.4.2 Functional Overview Of the digital controller sound part 43
5.4.3 Demodulator and decoder 44
6 SERVICE PARTS LIST 47
6.1 DTX-21G2FZP-SB 47
7 EXPLODED VIEW 52
7.1 DTX-21G2 52
7.2 DTX-21B4 53
7.3 DTX-21U7 54
8 PRINTED CIRCUIT BOARD 55
8.1 4859813693(OLD PCB) 55
8.2 4859816393(NEW PCB) 56
9 SCHEMATIC DIAGRAM 57
9.1 CP-520V 57
2
CP-520V Service Manual
DOCUMENT HISTORY
VERSION DATE COMMENTS
V1.46 07/07/06 Creation of document (Author JS KIM) for project CP520 50Hz TV.
3
CP-520V Service Manual
1 MAIN FEATURES
1.1 SPECIFICATIONS
1.1.1 GENERAL
TV standard PAL - SECAM B/G D/K, PAL I/I, SECAM L/L'
Colour system Tuner PAL, SECAM
AV PAL, SECAM, PAL 60, NTSC M, NTSC 4.43
Sound system NICAM B/G, I, D/K, L,
FM 2Carrier B/G, D/K
Power 59W
consumption
Sound Output 4.5W x 2 (at 60% mod, 10% THD)
Power
Speaker 12W 8 ohm x2
Teletext system 10 pages memory FASTEXT (FLOF or TOP)
Aerial input 75 ohm unbalanced
Channel coverage Off-air channels, S-cable channels and hyperband
Tuning system frequency synthesiser tuning system
Visual screen size 51cm
Channel indication On Screen Display
Program Selection 100 programmes
Aux. terminal EURO-SCART 1 : Audio / Video In and Out, R/G/B
In, Slow and Fast switching.
EURO-SCART 2 : Audio / Video In and Out, SVHS
In.
AV3 : Audio-Video Jack on front of cabinet.
Headphone jack (3.5 mm) on front of cabinet
SVHS3 (option) : Jack on front of cabinet