Daewoo CP-520F, CP-520A, CP-520, DTZ-28W8, DTZ-2881 Service Manual

...

http : //svc.dwe.co.kr

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(http://svc.dwe.co.kr)

DAEWOO ELECTRONICS Corp.

Service Manual

June. 2004

COLOR TELEVISION CHASSIS : CP-520

MODEL : DTY-28A8/28A6/28A7

DTY-2880/28W5 DTY-21U7/21B4

DTY-25G6/25G7

CHASSIS : CP-520A

MODEL : DTC-20T2

DTC-21Y1/21Y2

CHASSIS : CP-520F

MODEL : DTZ-29U7/U3

DTZ-2881/28W8 DTZ-2481

P/N:TCP520BEF0

CP-520/520A/520F 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 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 - F6653 ................................................................................................................. 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 CONTROL PART - ELECTRICAL CHARACTERISTICS....................................... 32

4.6.6 MOSFET 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

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CP-520/520A/520F Service Manual

5.2.4.1 STEREO AND AV STEREO VERSIONS........................................................... 36

5.2.4.2 MONO VERSIONS ............................................................................................ 36

5.2.5 CVBS and Y/C input signal selection..................................................................... 36

5.2.5.1 ALL VERSIONS ................................................................................................. 36

5.2.6 Synchronisation circuit........................................................................................... 37

5.2.7 Horizontal and vertical drive................................................................................... 38

5.2.8 Chroma, luminance and feature processing .......................................................... 38

5.2.9 Colour decoder ...................................................................................................... 39

5.2.10 RGB output circuit.................................................................................................. 40

5.2.11 I2C-BUS USER INTERFACE DESCRIPTION....................................................... 42

5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSOR.............. 42

5.3.1 Supported standards ............................................................................................. 43

5.4 FUNCTIONAL DESCRIPTION SOUND PROCESSOR ............................................... 44

5.4.1 The UOC III TV Sound Concept ............................................................................ 44

5.4.2 Functional Overview Of the digital controller sound part........................................ 45

5.4.3 Demodulator and decoder ..................................................................................... 46

6 SERVICE PARTS LIST ....................................................................................................... 49

6.1 DTY-28A8FZF-S........................................................................................................... 49

6.2 DTC-20T2FZS-S........................................................................................................... 54

6.3 DTC-21Y1FZF-S........................................................................................................... 59

6.4 DTZ-29U7FZS-S........................................................................................................... 64

7 EXPLODED VIEW............................................................................................................... 69

7.1 DTY-28A8..................................................................................................................... 69

7.2 DTY-2880 ..................................................................................................................... 70

7.3 DTY-21U7..................................................................................................................... 71

7.4 DTC-20T2..................................................................................................................... 72

7.5 DTC-21Y1..................................................................................................................... 73

7.6 DTZ-29U7..................................................................................................................... 74

7.7 DTZ-2881...................................................................................................................... 75

7.8 DTZ-2481...................................................................................................................... 76

8 PRINTED CIRCUIT BOARD................................................................................................ 77

8.1 4859809693(CP-520) ................................................................................................... 77

8.2 4859809893(CP-520A)................................................................................................. 78

8.3 4859809993(CP-520F) ................................................................................................. 79

9 SCHEMATIC DIAGRAM...................................................................................................... 80

9.1 CP-520.......................................................................................................................... 80

9.2 CP-520A....................................................................................................................... 81

9.3 CP-520F ....................................................................................................................... 82

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CP-520/520A/520F Service Manual

DOCUMENT HISTORY

VERSION DATE COMMENTS

V1.00 12/05/04 Creation of document (Author JS KIM) for project CP520 50Hz TV.

DTV R&D Europe

1 MAIN FEATURES

1.1 SPECIFICATIONS

1.1.1 GENERAL

TV standard PAL - SECAM B/G D/K, PAL I/I, SECAM L/L’

Sound system NICAM B/G, I, D/K, L, Power

consumption

Sound Output Power Speaker 20” ~ 24” : 7.5W 8 ohm x 2

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 20” : 48cm

Channel indication On Screen Display Program Selection 100 programmes Aux. terminal EURO-SCART 1 : Audio / Video In and Out, R/G/B

Remote Control Unit

CP-520/520A/520F Service Manual

Tuner PAL, SECAM Colour system AV PAL, SECAM, PAL 60, NTSC M, NTSC 4.43

FM 2Carrier B/G, D/K

20” ~ 24” : 4.5W x 2 (at 60% mod, 10% THD)

R-46G22

20”,21” : 49W 21” (4:3) Flat : 59W 28” (4:3) : 69W 28”(16:9) : 69W

25” ~ 29” : 7W x 2 (at 60% mod, 10%THD) 25” ~ 29” : 12W 8 ohm x2

21” : 51cm 28” : 66cm

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 – sound input common with AV3.

1.1.2 EURO-SCART 1 (21 Pin)

Pin Signal Description Matching value

1 Audio Output Right 2 Audio Input Right 3 Audio Output Left 4 Audio Earth 5 Blue Earth 6 Audio Input Left 7 Blue Input

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0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )

0.5 Vrms, Impedance > 10 kΩ

0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )

0.5 Vrms, Impedance > 10 kΩ

0.7 Vpp ±0.1V, Impedance 75Ω 4

CP-520/520A/520F Service Manual

8 Slow Switching TV : 0 to 2V, AV 16/9 : 4.5 to 7V, AV 4/3 : 9.5 to 12V , Impedance

> 10 kΩ 9 Green Earth 10 N.C. 11 Green Input 12 N.C. 13 Red Earth 14 Blanking Earth 15 Red Input 16 Fast Switching 17 Video Out Earth 18 Video In Earth 19 Video Output 20 Video Input 21 Common Earth

1.1.3 EURO-SCART 2 (21 Pin) Pin Signal Description Matching value

1 Audio Output Right 2 Audio Input Right 3 Audio Output Left 4 Audio Earth 5 Earth 6 Audio Input Left 7 N.C. 8 N.C.

9 N.C. 10 N.C. 11 N.C. 12 N.C. 13 Earth 14 Earth 15 Chroma Input 16 N.C. 17 Earth 18 Video In Earth 19 Video Output 20 Video Input, Y In. 21 Common Earth

0.7 Vpp ± 0.1V, Impedance 75Ω

0.7 Vpp ± 0.1V, Impedance 75Ω 0 to 0.4V : Logic “0”, 1 to 3V : Logic “1”, Impedance 75Ω

1 Vpp ± 3dB, Impedance 75Ω 1 Vpp ± 3dB, Impedance 75Ω

0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )

0.5 Vrms, Impedance > 10 kΩ

0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )

0.5 Vrms, Impedance > 10 kΩ

± 3dB for a luminance signal of 1 Vpp

1 Vpp ± 3dB, Impedance 75Ω ( Monitor output ) 1 Vpp ± 3dB, Impedance 75Ω

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CP-520/520A/520F Service Manual

1.2 CHANNEL/FREQUENCY TABLE

CHANNEL EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT

C01 46.25 - 45.75 49.75 C02 48.25 55.75 (L') 53.75 59.25 C03 55.25 60.5 (L') 61.75 77.25 C04 62.25 63.75 (L') 175.25 85.25 C05 175.25 176.00 183.25 93.25 C06 182.25 184.00 191.25 175.25 C07 189.25 192.00 199.25 183.25 C08 196.25 200.00 207.25 191.25 C09 203.25 208.00 215.25 199.25 C10 210.25 216.00 223.25 207.25 C11 217.25 189.25 (LUX) 231.25 215.25 C12 224.25 69.25 (L') 239.25 223.25 C13 53.75 76.25 (L') 247.25 C14 - 83.25 (L') 49.75 C15 82.25 90.25 57.75 C16 - 97.25 65.75 C17 183.75 - 77.75 C18 192.25 - 85.75 C19 201.25 - - C20 - - - C21 471.25 471.25 471.25 471.25 C22 479.25 479.25 479.25 479.25 C23 487.25 487.25 487.25 487.25 C24 495.25 495.25 495.25 495.25 C25 503.25 503.25 503.25 503.25 C26 511.25 511.25 511.25 511.25 C27 519.25 519.25 519.25 519.25 C28 527.25 527.25 527.25 527.25 C29 535.25 535.25 535.25 535.25 C30 543.25 543.25 543.25 543.25 C31 551.25 551.25 551.25 551.25 C32 559.25 559.25 559.25 559.25 C33 567.25 567.25 567.25 567.25 C34 575.25 575.25 575.25 575.25 C35 583.25 583.25 583.25 583.25 C36 591.25 591.25 591.25 591.25 C37 599.25 599.25 599.25 599.25 C38 607.25 607.25 607.25 607.25 C39 615.25 615.25 615.25 615.25 C40 623.25 623.25 623.25 623.25 C41 631.25 631.25 631.25 631.25 C42 639.25 639.25 639.25 639.25 C43 647.25 647.25 647.25 647.25 C44 655.25 655.25 655.25 655.25 C45 663.25 663.25 663.25 663.25

DTV R&D Europe

CP-520/520A/520F Service Manual

C46 671.25 671.25 671.25 671.25 C47 679.25 679.25 679.25 679.25 C48 687.25 687.25 687.25 687.25 C49 695.25 695.25 695.25 695.25 C50 703.25 703.25 703.25 703.25 C51 711.25 711.25 711.25 711.25 C52 719.25 719.25 719.25 719.25 C53 727.25 727.25 727.25 727.25 C54 735.25 735.25 735.25 735.25 C55 743.25 743.25 743.25 743.25 C56 751.25 751.25 751.25 751.25 C57 759.25 759.25 759.25 759.25 C58 767.25 767.25 767.25 767.25 C59 775.25 775.25 775.25 775.25 C60 783.25 783.25 783.25 783.25 C61 791.25 791.25 791.25 791.25 C62 799.25 799.25 799.25 799.25 C63 807.25 807.25 807.25 807.25 C64 815.25 815.25 815.25 815.25 C65 823.25 823.25 823.25 823.25 C66 831.25 831.25 831.25 831.25 C67 839.25 839.25 839.25 839.25 C68 847.25 847.25 847.25 847.25 C69 855.25 855.25 855.25 855.25 C70 863.25 863.25 863.25 863.25 C71 69.25 - - - C72 76.25 - - - C73 83.25 - - - C74 90.25 - - - C75 97.25 - - - C76 59.25 - - - C77 93.25 - - - S01 105.25 104.75 103.25 105.25 S02 112.25 116.75 111.25 112.25 S03 119.25 128.75 119.25 119.25 S04 126.25 140.75 127.25 126.25 S05 133.25 152.75 135.25 133.25 S06 140.25 164.75 143.25 140.25 S07 147.25 176.75 151.25 147.25 S08 154.25 188.75 159.25 154.25 S09 161.25 200.75 167.25 161.25 S10 168.25 212.75 - 168.25 S11 231.25 224.75 - 231.25 S12 238.25 236.75 - 238.25 S13 245.25 248.75 255.25 245.25 S14 252.25 260.75 263.25 252.25 S15 259.25 272.75 271.25 259.25 S16 266.25 284.75 279.25 266.25 S17 273.25 296.75 287.25 273.25

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CP-520/520A/520F Service Manual

S18 280.25 136.00 295.25 280.25 S19 287.25 160.00 303.25 287.25 S20 294.25 - - 294.25 S21 303.25 303.25 - 303.25 S22 311.25 311.25 311.25 311.25 S23 319.25 319.25 319.25 319.25 S24 327.25 327.25 327.25 327.25 S25 335.25 335.25 335.25 335.25 S26 343.25 343.25 343.25 343.25 S27 351.25 351.25 351.25 351.25 S28 359.25 359.25 359.25 359.25 S29 367.25 367.25 367.25 367.25 S30 375.25 375.25 375.25 375.25 S31 383.25 383.25 383.25 383.25 S32 391.25 391.25 391.25 391.25 S33 399.25 399.25 399.25 399.25 S34 407.25 407.25 407.25 407.25 S35 415.25 415.25 415.25 415.25 S36 423.25 423.25 423.25 423.25 S37 431.25 431.25 431.25 431.25 S38 439.25 439.25 439.25 439.25 S39 447.25 447.25 447.25 447.25 S40 455.25 455.25 455.25 455.25 S41 463.25 463.25 463.25 463.25

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CP-520/520A/520F Service Manual

2 SAFETY INSTRUCTION WARNING: Only competent service personnel may carry out work involving the testing or repair

of this equipment.

X-RAY RADIATION PRECAUTION

1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 25-26 KV (20”-21”) or 26 KV (25” - 28”) at max beam current. The high voltage must not, under any circumstances, exceed 27.5 KV (20”), 29KV (21”), 29.5 KV (25") or 30 KV (28"). Each time a receiver requires servicing, the high voltage should be checked. It is important to use an accurate and reliable high voltage meter.

2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as specified in the parts list.

SAFETY PRECAUTION

Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside the cabinet or with the back board removed involves a shock hazard from the receiver. Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment. Discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List. When replacing a high wattage resistor (metal oxide film resistor) in the circuit board, keep the resistor 10 mm away from circuit board. Keep wires away from high voltage or high temperature components. This receiver must operate under AC 230 volts, 50 Hz. NEVER connect to a DC supply or any other voltage or frequency.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this equipment have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements, electrical components having such features are identified by designated symbol on the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitutes replacement parts which do not have the same safety characteristics as specified in the parts list may create X-RAY Radiation.

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CP-520/520A/520F Service Manual

3 ALIGNMENT INSTRUCTIONS

3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE To switch the TV set into service mode please see instruction below.

1 - Select PR. number 91 2 - Adjust sharpness to minimum and exit all menus. 3 – Within 2 seconds press the key sequence : RED - GREEN - menu

The software version is displayed beside the word Service, e.g. “SERVICE VER 00.05”. To exit SERVICE menu press menu key or Std By key.

3.2 SERVICE MODE NAVIGATION Pr Up/Down remote keys : cycle through the service items available.

Vol -/+ remote keys : Dec./Increment the values within range – Cycle trough option bits. OK key : Toggle bits in option byte

Order Item Default setting

1 HOR CEN 2 RED GAIN 3 GRN GAIN 4 BLUE GAIN 5 RED BIAS 6 GRN BIAS 7 AGC LEVEL 8 G2 – SCREEN

9 OPTION1 10 OPTION2 11 AVL 12 PARABOLA 13 HOR WIDTH 14 CORNER T 15 CORNER B 16 HOR. PARAL 17 V. LINEAR 18 V. SLOPE 19 EW TRAPEZ 20 S CORRECT 21 VERT CENT 22 VERT SIZE

3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS

There are two option bytes available (16 bits in all). These option bits are available from Service mode. First find the OPTION1 or OPTION2 control, and then use the Volume PLUS/MINUS buttons on the remote control keypad to locate the bits, and OK key to toggle them. The table below shows the two option bytes available;

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CP-520/520A/520F Service Manual

3.4 OPTION 1 B7 B6 B5 B4 B3 B2 B1 B0

TOP

Teletext

OFF TOP

Teletext

3.5 OPTION 2 B7 B6 B5 B4 B3 B2 B1 B0

Fixed to

‘0’

OPTION SETTING BY MODEL

CHASSIS MODEL

CP-520

CP-520A

CP-520F

FASTEXT

(FLOF)

OFF

FASTEXT

(FLOF) ON

JVC

remote

control

Daewoo

Remote

control

DTY-28W5/80

DTY-21U7 DTC-20T2

DTC-21Y1/Y2

DTZ-2881/W8 DTZ-2481

DTZ-29U7/B3

TUBE

4:3

TUBE

16:9

AVL

control

OFF AVL

control

I 0011 1100 3C DTY-28A6/A7/A8 II 0000 1001 09 I 0001 1100 1C

II 0000 1001 09 I 0011 1100 3C

II 0000 1001 09 I 0011 1100 3C II 0000 1001 09 I 0001 1000 18

II 0000 1001 09

I 0011 1000 38 II 0000 1001 09

VAI bit set

to 1 in

SECAM L

VAI bit set

to 0 in

SECAM L

PICTURE

TILT ON

PICTURE TILT OFF

OPTION

BIT[b7…b0]

Dolby

Virtual

OFF

Dolby

Virtual

5 keys

lacal

keyboard

7 keys

lacal

keyboard

DW[hex] REMARKS

SVHS3

disable

SVHS3

enable

Full

ATSS

Basic

ATSS

OPTION1 “b1,b0” depends on Tuner OPTION2 “b1” – From ver. 9.3B Change to “1” - *1

If Sales Team Request TILT function Change to OP 2 – “b4” to “1” & *1

TUNER OPTIONS

01 = Not used

11 = Parstnic (DW)

Double Window Enabled

Double Window

Disabled

00 = Philips

10 = Alps

n.u.

Must

be set

to 1 for

future

compa

tibility

DTV R&D Europe

CP-520/520A/520F Service Manual

3.6 NVM default setting

The purpose of this message, when you change a virgin EEPROM, is to allow to modify the NVM DATA to desired values.

1 - Introduction :

The NVM default valus are fixed for the user, but for flexibility in service, these data are stored in NVM and can be changed when the TV set is in a special mode call "NVM EDITOR". This mode can only be access from "FACTORY" mode.

2 - Entering into "FACTORY" mode. To switch the TV set into FACTORY mode, use the factory remote control, and press on “SVC” key. The factory menu will appear on the screen, showing “FACTORY” , plus other relevant information like software version and date. WARNING : When in "FACTORY" mode you should not press any key other than the keys described in the procedure below. Unwanted key stroke could misadjust the TV set.

3 - Entering into "NVM EDITOR" mode. To switch the TV set into NVM EDITOR mode, use the user remote control, and press on “PICTURE/OK” key. The NVM EDITOR window will appear on the screen. This mode allow you to access all data stored in NVM. The current NVM address is given in column "ADDR." in both DECimal and HEXadecimal format. The column DATA gives the value contained at selected address in both DECimal and HEXadecimal format.

4 - Navigation in "NVM EDITOR" mode. Use Program Up/Dwn keys to select the desired address. Use Volume Up/Dwn keys to change the data at selected address. You must press "PICTURE/OK" key to store value after modification.

The data can be adjusted between 0 and 63. 5 - Exit "NVM EDITOR" mode.

To switch the TV set back into FACTORY mode, use the user remote control, and press on “MENU” key. The factory menu will appear on the screen, showing “FACTORY”.

6 - Exit "FACTORY" mode. To exit "FACTORY" mode, use the factory remote control, and press on “SVC” key. The factory menu will disappear from the screen.

DTV R&D Europe

CP-520/520A/520F Service Manual

NVM DATA CHANGE LIST

No Register Name Address Default 28A8 2880 21U7 2881 29U7 21Y1 20T2

1 OCP_THRESHOLD 0x58F 0x91 <- <- <- <- <- <- <2 DCXO 0x590 0x4E <- <- <- <- <- <- <3 AGC_PHILIPS 0x5C1 0xAB <- <- <- <- <- <- <4 AGC_NC 0x5C2 0xAB <- <- <- <- <- <- <5 AGC_ALPS 0x5C3 0xB6 <- <- <- <- <- <- <6 AGC_PARTSNIC 0x5C4 0xB6 <- <- <- <- <- <- <7 AGC_PHILIPS_START 0x5C5 0x16 <- <- <- <- <- <- <8 AGC_NC_START 0x5C6 0x16 <- <- <- <- <- <- <-

9 AGC_ALPS_START 0x5C7 0x16 <- <- <- <- <- <- <10 AGC_PARTSNIC_START 0x5C8 0x16 <- <- <- <- <- <- <11 AVLLEV 0x621 0x5 <- <- <- <- <- <- <12 Nor1_Bright 0x64A 0x23 <- <- <- <- <- <- <13 Nor1_contrast 0x64B 0x2E <- <- <- <- <- <- <14 Nor1_Colour 0x64C 0x1C <- <- <- <- <- <- <15 Nor1_Sharpness 0x64D 0x23 <- <- <- <- <- <- <16 Nor1_Tint 0x64E 0x20 <- <- <- <- <- <- <17 Nor1_JVC_Bri 0x64F 0x2D <- <- <- <- <- 0x22 <18 Nor1_JVC_Cont 0x650 0x2A <- <- <- <- <- 0x2E <19 Nor1_JVC_Colour 0x651 0x1B <- <- <- <- <- 0x20 <20 Nor1_JVC_Sharp 0x652 0x23 <- <- <- <- <- <- <21 Nor2_Bright 0x653 0x28 0x23 <- <- <- <- 0x22 <22 Nor2_Contrast 0x654 0x13 0x1A <- <- <- <- <- <23 Nor2_Colour 0x655 0x19 0x16 <- <- <- <- <- <24 Nor2_Sharpness 0x656 0x1B <- <- <- <- <- <- <25 Nor2_Tint 0x657 0x20 <- <- <- <- <- <- <26 PresetGainRGB 0x673 0x2A <- <- <- <- <- 0x22 <27 PresetGainRGB 0x674 0x2A <- <- <- <- <- 0x22 <28 PresetGainRGB 0x675 0x2A <- <- <- <- <- 0x22 <29 Cathode_Drive 0x67B 0x1 <- <- <- <- <- <- <30 Y_delay_PAL_BG 0x686 0x5 <- <- <- <- <- 0x1 <31 Y_delay_SECAM_BG 0x687 0x8 <- <- <- <- <- 0x6 <32 Y_delay_PAL_DK 0x688 0x5 <- <- <- <- <- 0x0 <33 Y_delay_SCM_DK 0x689 0x5 <- <- <- <- <- 0x2 <34 Y_delay_PAL_I 0x68A 0x7 <- <- <- <- <- 0x1 <35 Y_delay_SECAM 0x68B 0x5 <- <- <- <- <- <- <36 Y_delay_SECAM-L 0x68C 0x8 <- <- <- <- <- 0x6 <37 Y_delay_AV 0x68D 0xA <- <- <- <- <- 0x2 <38 G2_Bright 0x68E 0x1A <- <- 0x28 0x10 0x1A 0x32 <39 G2_Contrast 0x68F 0x42 <- <- 0x42 0x42 0x42 0x42 <-

(hex) CP-520 CP-520F CP-520A

DTV R&D Europe

CP-520/520A/520F Service Manual

3.7 TV SET ALIGNMENT

3.7.1 G2 ALIGNMENT

- Tune a colour bar pattern.

- Find the “G2 – SCREEN” item in service mode.

- Adjust screen volume (on FBT) to bring the cursor to central position(Green).

3.7.2 WHITE BALANCE

- Select a dark picture and adjust RED BIAS and GRN BIAS to the desired colour temperature.

- Select a bright picture and adjust RED, GRN and BLUE GAIN to the desired colour temperature.

3.7.3 FOCUS

Adjust the Focus volume (on FBT) to have the best resolution on screen.

3.7.4 VERTICAL GEOMETRY

Adjust V. LINEAR (linearity), S CORRECT (S. Correction), VERT SIZE (Vertical amplitude), VERT CENT (vertical centring) to compensate for vertical distortion.

3.7.5 HORIZONTAL PICTURE CENTRING

Adjust HOR CEN (Horizontal centre) to have the picture in the centre of the screen.

3.7.6 EAST / WEST CORRECTION

Adjust the PARABOLA, HOR WIDTH, CORNER, HOR PARAL, EW TRAPEZ, to compensate for geometrical distortion.

HOR PARAL

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HOR WIDTH

adjust for 93% overscan.

PARABOLA

CORNER B & CORNER T

EW TRAPEZ

3.7.7 AGC

- Make sure option bits are correct for the tuner fitted on the chassis (See above how to change option bits).

- Adjust the antenna signal level at 62 dBµV

- Tune a colour bar pattern.

- Find the “AGC” item in service mode.

- Press the key “OK” on the remote keypad and wait until AGC level stabilise to the optimum value.

- Alternatively, use “Vol Up/Dwn” keys to adjust manually to the desired Tuner Take Over Point (TOP).

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4 IC DESCRIPTION

CP-520/520A/520F Service Manual

4.1 UOC

III

Series

The UOC

III

series combines the functions of a Video Signal Processor (VSP) together with a FLASH embedded TEXT/Control/Graphics µ-Controller (TCG µ-Controller) and US Closed Caption decoder. In addition the following functions can be added:

• Adaptive digital (4H/2H) PAL/NTSC combfilter

• Teletext decoder with 10 page text memory

• Multi-standard stereo decoder

• BTSC stereo decoder

• Digital sound processing circuit

• Digital video processing circuit

4.1.1 IC MARKING AND VERSION

Chassis IC marking OSD languages ATSS countries Text

BULGARIAN,

Austria, Belgium, Switzerland, Czech Republic, Germany, Denmark, Spain, France, Finland, GB, Greece, Hungary, Italy, Ireland, Norway, Netherlands, Portugal, Poland, Sweden, Slovak Republic, Others

PAN-EUROPEAN LATIN, CYRILLIC, GREEK.

CP-520A CP-520 CP-520F

CZECH, GERMAN, DANISH, SPANISH, FRENCH, FINNISH, ENGLISH, GREEK, HUNGARIAN, ITALIAN, NORWEGIAN, DUTCH, POLISH, ROMANIAN, RUSSIAN, SWEDISH, SLOVAKIAN.

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4.1.2. BLOCK DIAGRAM

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4.1.3. PINNING

QFP 128pin Symbol Short Description

1 P1.5/TX Port 1.5 or UART bus 2 P1.4/RX port 1.4 or UART bus 3 P1.2/INT2 port 1.2 or external interrupt 2 4 VSSC3 Ground 5 VDDC3 digital supply to core (1.8V) 6 P2.5/PWM4 port 2.5 or PWM4 output 7 P2.4/PWM3 port 2.4 or PWM3 output 8 VSSC/P digital ground for m-Controller core and periphery

9 P3.3/ADC3 port 3.3 or ADC3 input 10 P3.2/ADC2 port 3.2 or ADC2 input 11 DECV1V8 decoupling 1.8 V supply 12 VDDC1 digital supply to core (+1.8 V) 13 P3.1/ADC1 port 3.1 or ADC1 input 14 P3.0/ADC0 port 3.0 or ADC0 input 15 P2.3/PWM2 port 2.3 or PWM2 output 16 P2.2/PWM1 port 2.2 or PWM1 output 17 P2.1/PWM0 port 2.1 or PWM0 output 18 P2.0/TPWM port 2.0 or Tuning PWM output

19 VDDP(3.3V) 20 P1.7/SDA port 1.7 or I2C-bus data line

21 P1.6/SCL port 1.6 or I2C-bus clock line 22 P1.3/T1 port 1.3 or Counter/Timer 1 input 23 P0.0/I2SDI1/O port 0.0 or I2S digital input 1 or I2S digital output 24 P0.1/I2SDO1 port 0.1 or I2S digital output 1 25 P0.2/I2SDO2 port 0.2 or I2S digital output 2 26 P0.3/I2SCLK port 0.3 or I2S clock 27 P0.4/I2SWS port 0.4 or I2S word select 28 VSSC2 Ground 29 VDDC2 digital supply to core (1.8 V) 30 P1.1/T0 port 1.1 or Counter/Timer 0 input 31 P1.0/INT1 port 1.0 or external interrupt 1

32 INT0/P0.5 33 VDDadc(1.8) supply voltage video ADC

34 VSSadc ground for on-chip temperature sensor 35 VDDA2(3.3) supply voltage SDAC (3.3 V) 36 VDDA(1.8) analogue supply for audio ADCs (1.8 V) 37 GNDA Ground 38 VREFAD reference voltage for audio ADCs (3.3/2 V) 39 VREFAD_POS positive reference voltage (3.3 V) 40 VREFAD_NEG negative reference voltage (0 V)

41 VDDA1 42 BO Blue output

supply to periphery and on-chip voltage regulator (3.3 V)

external interrupt 0 or port 0.5 (4 mA current sinking capability for direct drive of LEDs)

analog supply for TCG m-Controller and digital supply for TV-processor (+3.3 V)

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43 GO Green output 44 RO Red output 45 BLKIN black current input 46 BCLIN beam current limiter input 47 VP3 3rd supply for TV processor 48 GND3 ground 3 for TV-processor 49 B/PBIN3 3rd B input / PB input 50 G/YIN3 3rd G input / Y input 51 R/PRIN3 3rd R input / PR input 52 INSSW3 3rd RGB / YPBPR insertion input

53 VOUT(SWO1) 54 UOUT(INSSW2)

55 YOUT Y-output (for YUV interface) 56 YSYNC Y-input for sync separator

57 YIN (G/YIN2/CVBS-Yx) 58 UIN (B/PBIN2) U-input for YUV interface (2nd B input / PB input) 59 VIN (R/PRIN2/CX) 60 VDDcomb supply voltage for comb filter (5 V)

61 VSScomb ground connection for comb filter 62 HOUT horizontal output

63 FBISO/CSY 64 SVM scan velocity modulation output

65 CVBSO/PIP CVBS / PIP output 66 AUDOUTHPR audio output for headphone channel (right signal) 67 AUDOUTHPL audio output for headphone channel (left signal) 68 AUDOUTLSR audio output for audio power amplifier (right signal) 69 AUDOUTLSL audio output for audio power amplifier (left signal) 70 C2/C3 chroma-2/3 input 71 CVBS3/Y3 CVBS3/Y3 input 72 AUDIOIN3R audio 3 input (right signal) 73 AUDIOIN3L audio 3 input (left signal) 74 CVBS2/Y2 CVBS2/Y2 input 75 AUDIOIN2R audio 2 input (right signal) 76 AUDIOIN2L audio 2 input (left signal) 77 C4 chroma-4 input 78 CVBS4/Y4 CVBS4/Y4 input 79 AUDIOIN4R audio-4 input (right signal) 80 AUDIOIN4L audio-4 input (left signal) 81 IFVO/SVO/CVBSI (2) IF video output / selected CVBS output / CVBS input 82 VP2 2nd supply voltage TV processor (+5 V) 83 AGC2SIF AGC capacitor second sound IF 84 VCC8V 8 Volt supply for audio switches 85 DVBO/FMRO (2) Digital Video Broadcast output / FM radio output

86 DVBO/IFVO/FMRO (2)

V-output for YUV interface (general purpose switch output) U-output for YUV interface (2nd RGB / YPBPR insertion input)

Y-input for YUV interface (2nd G input / Y input or CVBS/YX input))

V-input for YUV interface (2nd R input / PR input or CX input)

flyback input/sandcastle output or composite H/V timing output

Digital Video Broadcast output / IF video output / FM radio output

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87 SIFAGC/DVBAGC (2) 88 PLLIF IF-PLL loop filter

89 GND2 ground 2 for TV processor 90 91 DECSDEM decoupling sound demodulator

92 AUDOUTSR audio output for SCART/CINCH (right signal) 93 AUDOUTSL audio output for SCART/CINCH (left signal) 94 AUDIOIN5R audio-5 input (right signal) 95 AUDIOIN5L audio-5 input (left signal)

97 EHTO EHT/overvoltage protection input 98 AGCOUT tuner AGC output 99 SIFIN2/DVBIN2 (2) SIF input 2 / DVB input 2

100 SIFIN1/DVBIN1 (2) SIF input 1 / DVB input 1 101 GNDIF ground connection for IF amplifier 102 IREF reference current input 103 VSC vertical sawtooth capacitor 104 VIFIN2 IF input 2 105 VIFIN1 IF input 1 106 VDRA vertical drive A output 107 VDRB vertical drive B output 108 EWD/AVL (1) East-West drive output or AVL capacitor 109 DECBG bandgap decoupling 110 SECPLL SECAM PLL decoupling 111 GND1 ground 1 for TV-processor 112 PH1LF phase-1 filter 113 PH2LF phase-2 filter 114 VP1 1st supply voltage TV-processor (+5 V) 115 DECDIG decoupling digital supply

116 VGUARD/SWIO 117 VSSA1 Ground

118 XTALOUT crystal oscillator output 119 XTALIN crystal oscillator input 120 VREF_POS_HPR positive reference voltage SDAC (3.3 V) 121 VREF_NEG_HPL+HPR negative reference voltage SDAC (0 V) 122 VREF_POS_LSR+HPR positive reference voltage SDAC (3.3 V) 123 VREF_NEG_LSL+HPL negative reference voltage SDAC (0 V) 124 VREF_POS_LSL positive reference voltage SDAC (3.3 V) 125 VDDA3(3.3V) supply (3.3 V) 126 VDDC4 digital supply to SDACs (1.8V) 127 VSSC4 Ground 128 VSSP2 Ground

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QSSO/AMOUT/AUDEE

M (2)

AVL/SWO/SSIF/ REFO/REFIN (2)

AGC sound IF / internal-external AGC for DVB applications

QSS intercarrier output / AM output / deemphasis (front-end audio out)

Automatic Volume Levelling / switch output / sound IF input / subcarrier reference output / external reference signal input for I signal mixer for DVB operation

V-guard input / I/O switch (e.g. 4 mA current sinking capability for direct drive of LEDs)

CP-520/520A/520F Service Manual

4.1.4 FEATURES

Analogue Video Processing (all versions)

· Multi-standard vision IF circuit with alignment-free PLL demodulator

· Internal (switchable) time-constant for the IF-AGC circuit

· Switchable group delay correction and sound trap (with switchable centre frequency) for the demodulated CVBS signal

· DVB/VSB IF circuit for preprocessing of digital TV signals.

· Video switch with 3 external CVBS inputs and a CVBS output. All CVBS inputs can be used as Y-input for Y/C signals. However, only 2 Y/C sources can be selected because the circuit has 2 chroma inputs. It is possible to add an additional CVBS(Y)/C input (CVBS/YX and CX) when the YUV interface and the RGB/YPRPB input are not needed.

· Automatic Y/C signal detector

· Adaptive digital (4H/2H) PAL/NTSC comb filter for optimum separation of the luminance and the chrominance signal.

· Integrated luminance delay line with adjustable delay time

· Picture improvement features with peaking (with switchable centre frequency, depeaking, variable positive/negative peak ratio, variable pre-/overshoot ratio and video dependent coring), dynamic skin tone control, gamma control and blue- and black stretching. All features are available for CVBS, Y/C and RGB/YPBPR signals.

· Switchable DC transfer ratio for the luminance signal

· Only one reference (24.576 MHz) crystal required for the TCG m-Controller, digital sound processor, Teletext and the colour decoder

· Multi-standard colour decoder with automatic search system and various “forced mode” possibilities

· Internal base-band delay line

· Indication of the Signal-to-Noise ratio of the incoming CVBS signal

· Linear RGB/YPBPR input with fast insertion.

· YUV interface. When this feature is not required some pins can be used as additional RGB/YPBPR input. It is also possible to use these pins for additional CVBS (or Y/C) input (CVBS/YX and CX).

· Tint control for external RGB/YPBPR signals

· Scan Velocity Modulation output. The SVM circuit is active for all the incoming CVBS, Y/C and RGB/YPBPR signals. The SVM function can also be used during the display of teletext pages.

· RGB control circuit with ‘Continuous Cathode Calibration’, white point and black level off-set adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently.

· Contrast reduction possibility during mixed-mode of OSD and Text signals

· Adjustable ‘wide blanking’ of the RGB outputs

· Horizontal synchronization with two control loops and alignment-free horizontal oscillator

· Vertical count-down circuit

· Vertical driver optimized for DC-coupled vertical output stages

· Horizontal and vertical geometry processing with horizontal parallelogram and bow correction and horizontal and vertical zoom

· Low-power start-up of the horizontal drive circuit

Analogue video processing (stereo versions)

· The low-pass filtered ‘mixed down’ I signal is available via a single ended or balanced output stage.

Analogue video processing (mono versions)

· The low-pass filtered ‘mixed down’ I signal is available via a single ended output stage

Digital Video Processing (some versions)

· Double Window mode applications. It is possible to display a video and a text window or 2 text

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windows in parallel.

· Linear and non-linear horizontal scaling of the video signal to be displayed.

Sound Demodulation (all versions)

· Separate SIF (Sound IF) input for single reference QSS (Quasi Split Sound) demodulation.

· AM demodulator without extra reference circuit

· The mono intercarrier sound circuit has a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of this system is such that the external band-pass filters can be omitted. In the stereo versions of UOCIII the use of this demodulator is optional for special applications. Normally the FM demodulators of the stereo demodulator/decoder part are used (see below).

· The FM-PLL demodulator can be set to centre frequencies of 4.72/5.74 MHz so that a second sound channel can be demodulated. In such an application it is necessary that an external bandpass filter is inserted.

· The vision IF and mono intercarrier sound circuit can be used for the demodulation of FM radio signals. With an external FM tuner also signals with an IF frequency of 10.7 MHz can be demodulated.

· Switch to select between 2nd SIF from QSS demodulation or external FM (SSIF)

Audio Interfaces and switching (stereo versions with Audio DSP)

· Audio switch circuit with 4 stereo inputs, a stereo output for SCART/CINCH, 1 stereo output for HEADPHONE. The headphone channel has an analogue volume control circuit for the L and R channel. Finally 1 stereo SPEAKER output with digital controls.

· AVL (Automatic Volume Levelling) circuit for the headphone channel.

· Digital input crossbar switch for all digital signal sources and destinations

· Digital output crossbar for exchange of channel processing functionality

· Digital audio input interface (stereo I2S input interface)

· Digital audio output interface (stereo I2S output interface)

Audio interfaces and switching (AV stereo versions without Audio DSP)

· Audio switch circuit with 4 stereo inputs, a stereo output for SCART/CINCH and a stereo SPEAKER output with analogue volume control.

· Analogue mono AVL circuit at left audio channel

Audio interfaces and switching (mono versions)

· Audio switch circuit with 4 external audio (mono) inputs and a volume controlled output

· AVL circuit

Stereo Demodulator and Decoder (full stereo versions)

· Demodulator and Decoder Easy Programming (DDEP)

· Auto standard detection (ASD)

· Static Standard Selection (SSS)

· DQPSK demodulation for different standards, simultaneously with 1-channel FM demodulation

· NICAM decoding (B/G, I, D/K and L standard)

· Two-carrier multistandard FM demodulation (B/G, D/K and M standard)

· Decoding for three analog multi-channel systems (A2, A2+ and A2*) and satellite sound

· Adaptive de-emphasis for satellite FM

· Optional AM demodulation for system L, simultaneously with NICAM

· Identification A2 systems (B/G, D/K and M standard) with different identification time constants

· FM pilot carrier present detector

· Monitor selection for FM/AM DC values and signals, with peak and quasi peak detection option

· BTSC MPX decoder

· SAP decoder

· dbx® noise reduction (4)

· Japan (EIAJ) decoder

· FM radio decoder

· Soft-mute for DEMDEC outputs DEC, MONO and SAP

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· FM overmodulation adaptation option to avoid clipping and distortion

Audio Multi Channel Decoder (stereo versions with Audio DSP)

· Dolby® Pro Logic® (DPL) (1)

· Five channel processing for Main Left and Right, Subwoofer, Centre and Surround. To exploit this feature an external DAC is required.

Volume and tone control for loudspeakers (stereo versions with Audio DSP)

· Automatic Volume Level (AVL) control

· Smooth volume control

· Master volume control

· Soft-mute

· Loudness

· Bass, Treble

· Dynamic Bass Boost (DBB) (2)

· Dynamic Virtual Bass (DVB) (3)

· BBE® Sound processing (4)

· Graphic equalizer

· Processed or non processed subwoofer

· Programmable beeper

Reflection and delay for loudspeaker channels (stereo versions with Audio DSP)

· Dolby® Pro Logic® Delay (1)

· Pseudo hall/matrix function

Psycho acoustic spatial algorithms, downmix and split in loudspeaker channels (stereo versions with Audio DSP)

· Extended Pseudo Stereo (EPS) (5)

· Extended Spatial Stereo (ESS) (6)

· Virtual Dolby® Surround (VDS 422,423) (1)

· SRS 3D and SRS TruSurround® (4)

RDS/RBDS

· Demodulation of the European Radio Data system (RDS) or the USA Radio Broadcast Data System (RBDS) signal

· RDS and RBDS block detection

· Error detection and correction

· Fast block synchronisation

· Synchronisation control (flywheel)

· Mode control for RDS/RBDS processing

· Different RDS/RBDS block information output modes m-Controller

· 80C51 m-controller core standard instruction set and timing

· 0.4883 ms machine cycle

· maximum of 256k x 8-bit flash programmable ROM

· maximum of 8k x 8-bit Auxiliary RAM

· 12-level Interrupt controller for individual enable/disable with two level priority

· Two 16-bit Timer/Counter registers

· One 24-bit Timer (16-bit timer with 8-bit Pre-scaler)

· WatchDog timer

· Auxiliary RAM page pointer

· 16-bit Data pointer

· Stand-by, Idle and Power Down modes

· 24 general I/O

· 14 bits PWM for Voltage Synthesis Tuning

· 8-bit A/D converter with 4 multiplexed inputs

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· 5 PWM (6-bits) outputs for analogue control functions

· Remote Control Pre-processor (RCP)

· Universal Asynchronous Receiver Transmitter (UART)

Data Capture

· Text memory up to 10 pages

· Inventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT)

· Data Capture for US Closed Caption

· Data Capture for 525/625 line WST, VPS (PDC system A) and Wide Screen Signalling (WSS) bit decoding

· Automatic selection between 525 WST/625 WST

· Automatic selection between 625 WST/VPS on line 16 of VBI

· Real-time capture and decoding for WST Teletext in Hardware, to enable optimized mprocessor throughput

· Automatic detection of FASTEXT transmission

· Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters

· Signal quality detector for video and WST/VPS data types

· Comprehensive teletext language coverage

· Vertical Blanking Interval (VBI) data capture of WST data

Display

· Teletext and Enhanced OSD modes

· Features of level 1.5 WST and US Close Caption

· 50Hz/60Hz display timing modes

· Two page operation for 16:9 screens

· Serial and Parallel Display Attributes

· Single/Double/Quadruple Width and Height for characters

· Smoothing capability of both Double Size, Double Width & Double Height characters

· Scrolling of display region

· Variable flash rate controlled by software

· Soft colours using CLUT with 4096 colour palette

· Globally selectable scan lines per row (9/10/13/16/) and character matrix [12x9, 12x10, 12x13, 12x16, 16x18, (VxH)]

· Fringing (Shadow) selectable from N-S-E-W direction

· Fringe colour selectable

· Contrast reduction of defined area

· Cursor

· Special Graphics Characters with two planes, allowing four colours per character

· 64 software redefinable On-Screen display characters

· 4 WST Character sets (G0/G2) in single device (e.g. Latin, Cyrillic, Greek, Arabic)

· G1 Mosaic graphics, Limited G3 Line drawing characters

· WST Character sets and Closed Caption Character set in single device

· SVM for Text

4.2 TDA8946J STEREO AUDIO AMPLIFIER The TDA 8946J is a dual-channel audio power amplifier with an output power of 2 x 15 W at an 8

Ω load and a 18 V supply. The circuit contains two Bridges Tied Load (BTL) amplifiers with an

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CP-520/520A/520F Service Manual

all-NPN output stage and standby/mute logic. The TDA8946J comes in a 17-pin DIL-bentSIL(DBS) power package.

4.2.1 FEATURES

§ Few external components

§ Fixed gain

§ Standby and mute mode

§ No on/off switching plops

§ Low standby current

§ High supply voltage ripple rejection

§ Outputs short-circuit protected to ground, supply and across the load

§ Thermally protected

Pin description

Pin Symbol Description

1 OUT1- negative loudspeaker terminal 1 2 GND1 ground channel 1 3 Vcc1 supply voltage channel 1 4 OUT1+ positive loudspeaker terminal 1 5 n.c. not connected 6 IN1+ positive input1 7 n.c. not connected 8 IN1- negative input1

9 IN2- negative input2 10 MODE mode selection input 11 SVR half supply voltage decoupling (ripple rejection) 12 IN2+ positive input2

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+ 59 hidden pages