DAEWOO DTH-29U3 Service Manual

S/M No.TCN830FEF0

CHASSIS : CP-830F

MODEL : DTH-29U3

OTC 2003

CP830F Service Manual

	CONTENTS
DOCUMENT HISTORY		5
1	MAIN FEATURES	5
	1.1 SPECIFICATIONS	5
	1.1.1 GENERAL	5
	1.1.2 EURO-SCART 1 (21 Pin)	5
	1.1.3 EURO-SCART 2 (21 Pin)	6
	1.2 CHANNEL/FREQUENCY TABLE	7
	1.3 ATSS SORTING METHOD	10
	1.3.1 GENERAL CASE	10
	1.3.2 SPECIAL CASE	10
2	SAFETY INSTRUCTION	12
3	ALIGNMENT INSTRUCTIONS	13
	3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE	13
	3.2 SERVICE MODE NAVIGATION	13
	3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS	13
	3.3.1 OPTION 1	14
	3.3.2 OPTION 2	14
3.4 TV SET ALIGNMENT		14
	3.4.1 LOCAL OSCILLATOR ALIGNMENT	14
	3.4.2 G2 ALIGNMENT	14
	3.4.3 WHITE BALANCE	15
	3.4.4 FOCUS	15
	3.4.5 VERTICAL GEOMETRY	15
	3.4.6 HORIZONTAL PICTURE CENTRING	15
	3.4.7 EAST / WEST CORRECTION	15
	3.4.8 AGC	16
4	IC DESCRIPTION	17
	4.1 TELETEXT DECODER WITH EMBEDDED 8-BIT CONTROLLER	17
	4.1.1 BLOCK DIAGRAM OF THE SDA55XX	17
	4.1.2 DESCRIPTION	17
	4.1.3 IC MARKING AND VERSION	18
	4.1.4 PINNING	18
	4.2 VSP9412A - SCAN RATE CONVERTER INCLUDING MULTISTANDARD COLOUR
	DECODER	19
	4.2.1 BLOCK DIAGRAM OF THE VSP9412A	20
	4.2.2 DESCRIPTION	20
	4.2.3 PINNING	22
	4.3 DDP 3315C - DISPLAY AND DEFLECTION PROCESSOR	23
	4.3.1 BLOCK DIAGRAM OF THE DDP 3315C	24
	4.3.2 DESCRIPTION	24
	4.3.3 PINNING	26
	4.4 MSP341X MULTISTANDARD SOUND PROCESSOR	28
	4.4.1 BASIC FEATURES OF THE MSP 341X	28
	4.4.1.1 Demodulator & NICAM Decoder Section	28
	4.4.1.2 DSP-Section (Audio Baseband Processing)	29

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CP830F Service Manual

4.4.1.3 Analogue Section	29
4.4.1.4 NICAM & FM/AM-Mono	29
4.4.1.5 German 2-Carrier System (DUAL FM System)	29
4.5 TDA4470 - MULTISTANDARD VIDEO-IF AND QUASI PARALLEL SOUND PROCESSOR	32
4.5.1 DESCRIPTION	32
4.5.2 FEATURES	32
4.5.3 PINNING	32
4.5.4 BLOCK DIAGRAM	33
4.6 TDA894XJ STEREO AUDIO AMPLIFIER	34
4.6.1 FEATURES	34
4.7 TDA835XJ VERTICAL AMPLIFIER	35
4.7.1 TDA8357J	35
4.7.2 TDA8358J	37
4.8 TDA6107Q	39
4.9 24C16 - 16 KB EEPROM	40
4.10 STR - F6654	41
4.10.1 GENERAL DESCRIPTION	41
4.10.2 FEATURES	41
4.10.3 BLOCK DIAGRAM	41
4.10.4 PIN DESCRIPTION	42
4.10.5 CONTROL PART - ELECTRICAL CHARACTERISTICS	42
4.10.6 MOSFET ELECTRICAL CHARACTERISTICS	43
5 CP830 CHASSIS DESCRIPTION	44
5.1 BLOCK DIAGRAM	44
5.2 IF SECTION	45
5.2.1 BLOCK DIAGRAM	45
5.2.2 VISION IF AMPLIFIER	46
5.2.3 TUNER-AND VIF-AGC	46
5.2.4 FPLL, VCO AND AFC	46
5.2.5 VIDEO DEMODULATION AND AMPLIFIER	47
5.2.6 SOUND IF AMPLIFIER AND SIF-AGC	47
5.2.7 QUASI-PARALLEL-SOUND (QPS) MIXER	47
5.2.8 STANDARD SWITCH	47
5.2.9 L SWITCH	47
5.2.10 INTERNAL VOLTAGE STABILISER	47
5.3 VIDEO / RGB 51
5.3.1 FRONT END	47
5.3.1.1 CVBS Front-End	47
5.3.1.2 Input Selector	48
5.3.1.3 Signal Levels And Gain Control	48
5.3.1.4 Synchronization	48
5.3.1.5 Chroma Decoder	48
5.3.1.6 Luminance Processing	48
5.3.1.7 RGB Front-End	48
5.3.1.8 Signal Processing	48
5.3.1.8.1 Horizontal Prescaler	48
5.3.1.8.2 Noise Reduction	49
5.3.1.8.3 Noise Measurement	49
5.3.1.8.4 Operation Modes	49

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CP830F Service Manual
5.3.1.8.5Digital 656 Output	49
5.3.2BACK END	49
5.3.2.1 Digital Input Interface	49
5.3.2.2 Horizontal Scaler	49
5.3.2.3 Luma Contrast and Brightness	49
5.3.2.4 Black Level Expander/Compressor (BLEC)	49
5.3.2.5 Luma Sharpness Enhancer (LSE)	50
5.3.2.6 Dynamic Peaking	50
5.3.2.7 Luma Transient Improvement (LTI)	50
5.3.2.8 Mixing of Dynamic Peaking and LTI	50
5.3.2.9 Chroma Transient Improvement	50
5.3.2.10 Analog Back End	51
5.3.2.11 Analog RGB Insertion	51
5.3.2.12 CRT Measurement and Control	51
5.3.2.13 Synchronization and Deflection	52
5.3.2.14 EHT Compensation	52
5.4 MICROCONTROLLER	52
5.4.1MICROCONTROLLER FEATURES	52
5.4.2ACQUISITION FEATURES	53
5.4.3PORTS	53
5.4.4 -CONTROLLER I/O PIN CONFIGURATION AND FUNCTION TABLE	53
5.4.5TUNING	54
5.4.6AUTOMATIC PICTURE FORMAT SWITCHING	54
5.4.6.1 WSS Data	54
5.4.6.2 SCART Pin 8 Data (Slow Switching)	55
5.4.6.3 Picture Format Description	55
5.4.6.3.1 16:9 CRT	55
5.4.6.3.2 4:3 CRT	56
5.4.7EXTERNAL SOURCE CONTROL LOGIC	57
5.4.8OVER CURRENT PROTECTION	58
5.5 TELETEXT DISPLAY	58
5.6 SOUND PROCESSING	59
5.6.1ANALOGUE SOUND IF - INPUT SECTION	59
5.6.2QUADRATURE MIXERS	59
5.6.3PHASE AND AM DISCRIMINATION	59
5.6.4NICAM DECODER	60
5.6.5DSP SECTION	60
5.6.6SOUND MODE SWITCHING	60
5.7 SOUND AMPLIFICATION	60
5.7.1POWER AMPLIFIER	60
5.7.2MODE SELECTION	60
5.8 VERTICAL DEFLECTION	61
5.8.1FLYBACK VOLTAGE	61
5.8.2PROTECTION	61
5.8.3GUARD CIRCUIT	61
5.8.4DAMPING RESISTOR	61
5.8.5EAST-WEST AMPLIFIER (TDA8358J ONLY)	61
5.9 POWER SUPPLY (STR F6654)	61
5.9.1STR-F6654 GENERAL DESCRIPTION	61

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CP830F Service Manual

	5.9.2POWER SUPPLY PRIMARY PART OPERATIONS	61
	5.9.2.1 Start -up Circuit: VIN	62
	5.9.2.2 STR-F6654 Oscillating Operation	63
	5.9.2.3 STR-F6654 Protection Circuits	64
	5.10 TV START-UP, TV NORMAL RUN AND STAND BY MODE OPERATIONS	65
	5.10.1 TV START-UP OPERATIONS	65
	5.10.1.1 Schematic Diagram For Start-Up Operations	65
	5.10.1.2 TV Start-Up And Microcontroller Initialisation	65
	5.10.2 TV NORMAL RUN AND STAND-BY MODE OPERATIONS	67
	5.10.2.1 TV On Normal Run Mode	67
	5.10.2.2 TV Set On Stand-By Mode	70
6	SERVICE PARTS LIST	72
	6.1 DTH-29U7ZL	72
7	EXPLODED VIEW	88
	7.1 DTH-29U7	88

8	PRINTED CIRCULT BOARD	93
	8.1 MAIN PCB	93
	8.2 CRT PCB	94
	8.3 PFC PCB	95
9	SCHEMATIC DIAGRAM	96

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CP830F Service Manual

DOCUMENT HISTORY

VERSION

DATE

COMMENTS

V1.00

18/11/02

Creation of document (Author M Hearn) for project CP830 100Hz TV.

V1.01

22/11/02

Reformatting of the document, plus insertion of Document History section

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

29"(4:3) Real Flat :84W approx.

consumption

Sound Output Power

7W x 2 (at 60% mod, 10%THD)

Speaker

12W 8 ohm x2

Teletext system

9 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

29" : 68cm

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 ? sound

input common with AV3.

Remote Control

R-46G22

Unit

1.1.2

EURO-SCART 1 (21 Pin)

Pin

Signal Description

Matching value

1

Audio Output Right

0.5 Vrms, Impedance < 1 k

, ( RF 54% Mod )

2

Audio Input Right

0.5 Vrms, Impedance > 10 k

3

Audio Output Left

0.5 Vrms, Impedance < 1 k

, ( RF 54% Mod )

4

Audio Earth

5

Blue Earth

6

Audio Input Left

0.5 Vrms, Impedance > 10 k

7

Blue Input

0.7 Vpp 0.1V, Impedance 75

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CP830F Service Manual

	9				Green Earth
		10			N.C.
	11				Green Input		0.7 Vpp	0.1V, Impedance 75
		12			N.C.
		13			Red Earth
		14			Blanking Earth
		15			Red Input		0.7 Vpp	0.1V, Impedance 75
	16				Fast Switching		0 to 0.4V : Logic 0 , 1 to 3V : Logic 1 , Impedance 75
		17			Video Out Earth
		18			Video In Earth
	19				Video Output		1 Vpp	3dB, Impedance 75
		20			Video Input		1 Vpp	3dB, Impedance 75
		21			Common Earth
1.1.3 EURO-SCART 2 (21 Pin)
				Pin	Signal Description		Matching value
				1	Audio Output Right		0.5 Vrms, Impedance < 1 k		( RF 54% Mod )
				2	Audio Input Right		0.5 Vrms, Impedance > 10 k
			3		Audio Output Left		0.5 Vrms, Impedance < 1 k		, ( RF 54% Mod )
				4	Audio Earth
				5	Earth
			6		Audio Input Left		0.5 Vrms, Impedance > 10 k
				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		3dB for a luminance signal of 1 Vpp
				16	N.C.
				17	Earth
				18	Video In Earth
			19		Video Output		1 Vpp	3dB, Impedance 75	( Monitor output )
				20	Video Input, Y In.		1 Vpp	3dB, Impedance 75
				21	Common Earth

20 18 16 14 12 10 8 6 4 2

21 19 17 15 13 11 9 7 5 3 1

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CP830F 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	503.25503.25
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

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CP830F Service Manual

CHANNEL	EUROPE CCIR	FRANCE	GB(IRELAND)	EAST OIRT
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

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CP830F Service Manual

CHANNEL	EUROPE CCIR	FRANCE	GB(IRELAND)	EAST OIRT
S17	273.25	296.75	287.25	273.25
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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CP830F Service Manual

1.3 ATSS SORTING METHOD

The TV set sweeps all the TV bands from beginning of VHF to end of UHF. The TV controlling software for each program checks if a VPS CNI code is transmitted (this system exists for German, Swiss and Austrian transmissions).

If no VPS CNI code is found, then the system checks if a CNI code is transmitted as part of the teletext transmission

( Packet 8/30 format 1 and format 2). If such a code ( VPS or teletext ) is found and if this code is in the ATSS list, the program is automatically named.

If the transmission does not have VPS CNI, and no teletext service is available, then there is no possibility of the program being automatically named.

The programs found are then sorted in 4 groups :

Group I : It contains all the programs from the selected country and named by the TV controlling software. Within this group the sorting order is fixed by the ATSS list.

Group II : It contains all the programs with a strong signal strength which are not listed in group I. Group III : It contains all the programs with a weak signal strength which are not listed in group I.

Group IV : If two or more programs with the same code are found, only the strongest ( or if they have the same level the one with the lowest frequency) is listed in group I, II or III. The others are listed in group IV.

1.3.1 GENERAL CASE

1.3.2 SPECIAL CASE

Program

Group

Skip

Program

Group

Skip

number

number

1

1

Group II

...

2

Group I

m

...

m+1

n

Group III

...

n+1

p

...

Group II

p+1

m

Group IV

...

m+1

q

...

Group III

q+1

p

not used

...

p+1

99

...

Group IV

0

q

q+1

Special case : Country selection = Others

...

not used

99

0

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CP830F Service Manual

Note : If two programs with the same name but a different code are found these two programs are listed in group I, II or III .

The sorting order within group II, III, and IV is based on the channel frequency. The program with the lowest frequency is allocated the first rank in its group, and so forth until the last program of the group which has the highest frequency.

Special case : France

If France is selected, the TV controlling software first sweeps all TV bands with France system selected ( positive video modulation) and then a second time with Europe system selected ( negative video modulation).

Special case : Switzerland

If Switzerland is selected the TV controlling software first sweeps all TV bands with Europe system selected (negative video modulation) and then a second time with France system selected ( positive video modulation).

Special case : GB

Note for satellite receiver users : Before starting ATSS turn on your satellite receiver and tune to

SKY NEWS .

If GB is selected the TV controlling software seeks for programs only in UHF ( C21 to C70 ). The

sorting order is :

1 - BBC1

2 - BBC2

3 - ITV

4 - CH4

5 - CH5

6 ? NEWS (Sky News)

If two or more identicalprograms ( same name but different code e.g. BBC1 and BBC1

Scotland ) are found the following programs in the list will be shifted up. (1 - BBC1, 2 - BBC1, 3

-

BBC2, 4 - ITV, 5 - CH4, 6 - CH5, 7 - NEWS, ..)

If one of the programs above is not found, the associated program number remains empty (

freq.=467.25 MHz - Skip selected - no name ? system = GB).

example A : 1 - BBC1, 2 - BBC2, 3 - ITV, 4 - -----, 5 - CH5, 6 - NEWS, ...

example B ( if 2 BBC1 found ) : 1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - ITV, 5 - -----, 6 - CH5, 7 -

NEWS, ...

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CP830F 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, 5O 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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CP830F Service Manual

3 ALIGNMENT INSTRUCTIONS

3.1MICROCONTROLLER 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.gSERVICE V1.00 .

To exit SERVICE menu press menu key or Std By key.

3.2SERVICE 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		AFT
	10		OPTION1
	11		OPTION2
	12		PARABOLA
	13		HOR WIDTH
	14		CORNER T
	15		CORNER B
	16		HOR. PARAL
	17		V. LINEAR
	18		EW TRAPEZ
	19		S CORRECT
	20		VERT CENT
	21		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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CP830F Service Manual

3.3.1

OPTION 1

B7

B6

B5

B4

B3

B2

B1

B0

TOP

FASTEXT

TUBE

Headphone

Dolby

SVHS

Tuner options

1

text

(FLOF)

4:3

Volume/Balance

Virtual

3

00 = Philips

OFF

OFF

control OFF

OFF

disable

01 = not used

TOP

FASTEXT

TUBE

Headphone

Dolby

SVHS

10 = ALPS

0

text ON

(FLOF)

16:9

Volume/Balance

Virtual

3

11 = PARTSNIC

ON

control ON

ON

enable

(DW)

3.3.2 OPTION 2

B7

B6

B5

B4

B3

B2

B1

B0

1

Fixed to ‘0’

JVC remote control

AVL control OFF

PICTURE TILT ON

Program list enabled

See table below.

0

Daewoo Remote control

AVL control ON

PICTURE TILT OFF

Program list disabled

Beam Current

Tube

(mA)

B2

B1

B0

Nominal

Max

0.95

1.10

0

0

0

1.00

1.15

0

0

1

4/3 - Super Flat, 16/9 – Super Flat

1.05

1.20

0

1

0

1.10

1.25

0

1

1

1.20

1.35

1

0

0

1.25

1.40

1

0

1

4/3 - Real Flat, 16/9 – Real Flat

1.30

1.45

1

1

0

1.35

1.50

1

1

1

All values modified are immediately memorised in eeprom.

3.4 TV SET ALIGNMENT

3.4.1 LOCAL OSCILLATOR ALIGNMENT

Tune a colour bar pattern. The frequency of the signal carrier must be accurate ( Max +/- 10KHz deviation from the nominal channel frequency).

FindAFT item in service mode.

Adjust the coil L150 to bring the cursor to central position : 32.

3.4.2 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 : 32.

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CP830F Service Manual

3.4.3 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.

3.4.4 FOCUS

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

3.4.5 VERTICAL GEOMETRY

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

3.4.6 HORIZONTAL PICTURE CENTRING

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

3.4.7 EAST / WEST CORRECTION

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

HOR PARAL

HOR WIDTH adjust for 93% overscan.

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CP830F Service Manual

PARABOLA

CORNER B & CORNER T

EW TRAPEZ

3.4.8 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 64 dB V± 2

-Tune a colour bar pattern.

- Find theAGC 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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CP830F Service Manual

4 IC DESCRIPTION

4.1 TELETEXT DECODER WITH EMBEDDED 8-BIT CONTROLLER

TVText Pro is a 8-bit controller based on a enhanced 8051 core with embedded teletext, On screen Display and TV controller functions.

4.1.1 BLOCK DIAGRAM OF THE SDA55XX

4.1.2 DESCRIPTION

The SDA 55xx is a single chip teletext decoder for decoding World System Teletext data as well as Video

Programming System (VPS), Program Delivery Control (PDC), and Wide Screen Signalling (WSS) data used for PAL plus transmissions (line 23).

The device provides an integrated general-purpose, fully 8051-compatible Microcontroller with television specific hardware features. The microcontroller has been enhanced to provide powerful features such as memory banking, data pointers and additional interrupts etc.

The on-chip display unit for displaying Level 1.5 teletext data is also used for customer defined on-screen displays. Internal XRAM consists of 16 Kbytes. Device has an internal ROM of 128 Kbytes.

The SDA 55xx supports a wide range of standards including PAL, NTSC and contains a digital slicer for VPS, WSS,

PDC, TTX and Closed Caption, an accelerating acquisition hardware module, a display generator for Level 1.5 TTX data and powerful On screen Display capabilities based on parallel attributes, and Pixel oriented characters (DRCS).

The 8-bit Microcontroller runs at 360 ns. cycle time (min.). Controller with dedicated hardware does most of the internal TTX acquisition processing, transfers data to/from external memory interface and receives/transmits data via I 2 C-firmware user-interface. The slicer combined with dedicated hardware stores TTX data in a VBI buffer of 1

Kilobyte. The Microcontroller firmware performs all the acquisition tasks (hamming-and parity-checks, page search

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CP830F Service Manual

and evaluation of header control bits) once per field. Additionally, the firmware can provide high-end Teletext-features like Packet-26-handling, FLOF, TOP and list-pages.

4.1.3 IC MARKING AND VERSION

Chassis	IC marking	OSD languages	ATSS countries	Text
CP830		BULGARIAN,	Austria, Belgium,
		CZECH, GERMAN,	Switzerland, Czech
		DANISH, SPANISH,	Republic, Germany,
		FRENCH, FINNISH,	Denmark, Spain,	PAN-EUROPEAN
		ENGLISH, GREEK,	France, Finland, GB,	LATIN, CYRILLIC,
		HUNGARIAN,	Greece, Hungary, Italy,	GREEK.
		ITALIAN,	Ireland, Norway,
		NORWEGIAN,	Netherlands, Portugal,
		DUTCH, POLISH,	Poland, Sweden,
		ROMANIAN,	Slovak Republic,
		RUSSIAN,	Others
		SWEDISH,
		SLOVAKIAN.

4.1.4		PINNING
	PSDIP 52-pin	Pin Name	Type	Short Description
	1	SCL	IN/OUT	Software driven I2C bus Clock line
	2	SDA	IN/OUT	Software driven I2C bus Data line
	3	S/SW2	IN	Slow switching control for SCART 2.
	4	S/SW2	IN	(See Microcontroller I/O pin configuration)
	5	S/SW1	IN	Slow switching control for SCART 1.
	6	S/SW1	IN	(See Microcontroller I/O pin configuration)
	7	n.c.
8		Reset Out	OUT	Driven by controlling software to reset video IC s.
	9	VDD2.5	IN	Supply voltage 2.5V
	10	VSS	IN	Ground (0V)
	11	VDD3.3	IN	Input/Output 3.3V
	12	CVBS	IN	CVBS input for the acquisition circuit
	13	VDDA2.5	IN	Supply voltage for analog components
	14	VSSA	IN	Ground for analog components
	15	AFT	IN	ADC input, AFT input
	16	AGC	IN	ADC input, for AGC alignment only
	17	KEY	IN	ADC input, local key sensing
	18	OCP	IN	Switch Off the set when the voltage goes below a trigger level
	19	HS	IN	Horizontal sync for OSD/Txt synchronisation
	20	VS	IN	Vertical sync for OSD/Txt synchronisation
	21	MODESW	OUT	High : Negative video modulation (B, G, D, K,I)
				Low : Positive video modulation (L / L )
22		L/L	OUT	High : L , Low : L
	23	IR	IN	Remote control signal input
	24	INT	IN	Interrupt input from audio processor

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CP830F Service Manual

PSDIP 52-pin	Pin Name	Type	Short Description
25	n.c.
26	n.c.
27	n.c.
28	n.c.
29	VSS	IN	Ground (0V)
30	VDD3.3	IN	Input/Output 3.3V
31	n.c.
32	n.c.
33	RESET	IN	A low level on this pin resets the device.
34	XTAL2	OUT	Output of the inverting oscillator amplifier
35	XTAL1	IN	Input of the inverting oscillator amplifier
36	VSSA	IN	Ground for analog components
37	VDDA2.5	IN	Supply voltage for analog components
38	R OUT	OUT	Red output
39	G OUT	OUT	Green output
40	B OUT	OUT	Blue output
41	BK OUT	OUT	Blanking
42	VDD2.5	IN	Supply voltage 2.5V
43	VSS	IN	Ground (0V)
44	VDD3.3	IN	Input / Output 3.3V
45	n.c.
46	n.c.
47	n.c.
48	AGC	OUT	Tuner TOP adjustment
49	n.c.
50	n.c.
51	LED	OUT	High : Green LED, Low : Red LED
52	POWER	OUT	High : SMPS ON, Low : SMPS in stand by

4.2 VSP9412A - SCAN RATE CONVERTER INCLUDING MULTISTANDARD COLOUR DECODER The VSP 94x2A comprises all main functions of a digital featurebox in one monolithic IC.

The device comprises a digital multistandard color decoder, a RGB interface with fast-blank capability (SCART), digital ITU656 input, scaling units including panorama, embedded DRAM for upconversion, picture improvements, temporal noise reduction as well as A/D and D/A converter.

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CP830F Service Manual

4.2.1 BLOCK DIAGRAM OF THE VSP9412A
	7	Data	Input	Memory	Display		Output
CVBS		Acquisition	Processing		Processing		Processing	HOUT
(Y/C)			Noise	Mem. Controller	Hor. Scaling			VOUT
	3
CVBS			Reduction	Field Memory	Panorama		Display Sync	CLK27
(OUT)		Source Select			Peaking, CTI
	2
R/Cr		A/D Conversion		4:2:2 Format
G/Y	2	Color Decoder					D/A conversion	Y
		Frontend Sync					Oversampling	Cr
B/Cb	2
		Soft Mix					(9402/9432)	Cb
	2
FBL
ITU 656	8							B
							Digital Output
CLK 656			Clock					Digital 656
						I2C	(9412/9442)	CLK 656
			Generation
					SCL	SDA
			20.25 MHz

cybso1

cybso2

cybso3

reset

h50 v50

v

xout

xin

cybs1

ADC1

free-running

Output

memory

Output

clkout

cybs2

Y

Clock generation

Data

Sync

Soruce

(2)

controller

vout

CVBS Frontend

clocks

Controller

Controller

cybs3

Select

U,V

(9/10/11)

(39)

hout

cybs4

Iine-locked

(55)

(40)

cybs5

(4/4/6/7/8)

(1)

ADC2

clocks

cybs6

(2)

cybs7

Channel

Sample tate

Soft-mix

buffer

buffer

ADCR

mix

Converter

min1

(30)

(31)

(33/34)

gin1

(12)

Noise

Y

Noise

bin1

Soruce

ADCG

reduction

eDRAM

fbt1

Select

(13)

RBB Frontend

U,V

measurerrent

(35/36/37/38)

rin2

ADCB

(32)

(16)

gin2

(14)

data

data

bin2

ADCF

fbt2

(15)

PRIMUS

CLKB36

VSP94x2A

656clk

656io0

656io1

ITO656

656io2

656io3

Decoder

656io4

(41)

ayout

656io5

Y DAC (52)

656io6

656io7

Panorama Scaler

Peaking/DCTI/delzly

U DAC (53)

auout

CLKF20

(42/43/44/57)

(45/46/49/50)

CLKF2PAD

V DAC (54)

avout

line locked or

test-controller,

PC

free-running

8

ITU656 Encoder

interface

(51)

memory hist

(56)

656hinf

656vln

tclk

tms

adntd

scl

sda

clkf20

4.2.2 DESCRIPTION

Integrated Video Matrix switch

-Up to seven CVBS inputs, up to two Y/C inputs,

-Up to three CVBS outputs (even when Y/C input)

-9 bit amplitude resolution for CVBS, Y/C A/D converter

-AGC (Automatic Gain Control)

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CP830F Service Manual

Multi-standard colour decoder

-PAL/NTSC/SECAM including all substandards

-Automatic recognition of chroma standard

-Only one crystal necessary for all standards

RGB-FBL or YUV-H-V input

-8 bit amplitude resolution for RGB or YUV

-8 bit amplitude resolution for FBL or H

ITU656 support

-ITU656 output

-DS656 output (double-scan656like output)

Noise reduction

-Motion adaptive temporal noise reduction

-Field-based temporal noise reduction for luminance and chrominance

-Different motion detectors for luminance and chrominance or identical

-Flexible programming of the temporal noise reduction parameters

-Automatic measurement of the noise level

Horizontal scaling of the 1fH signal

- Split-screen possible with additional PiP or Text processor

Flexible digital horizontal scaling of the 2fH signal (Not used in this chassis)

-Scaling factors: 3, ... [2 pixel resolution], ..., 0.75 including 16:9 compatibility

-5 zone panorama generator

Embedded memory

-On-chip memory controller

-Embedded DRAM core for field memory

-SRAM for PAL/SECAM delay line

Data format 4:2:2

Flexible clock and synchronisation concept

-Horizontal line-locked or free-running mode

-Vertical locked or free-running mode

Scan-rate-conversion

- Simple interlaced modes (100/120 Hz): AABB, AAAA, BBBB (9402A/9412A only)

Flexible output sync controller

-Flexible positioning of the output signal

-Flexible programming of the output sync raster

Blank signal generation

Signal manipulations

-Still field

-Insertion of coloured background

-Windowing

-Vertical chrominance shift for improved VCR picture quality

Sharpness improvement (not used in this chassis)

-Digital color transition improvement (DCTI)

-Peaking (luminance)

1920 active pixel/per line in default configuration

I2C-bus control (400 kHz)

- selectable I C address

1.8V 5% and 3.3V 5% supply voltages P-MQFP-80 package

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CP830F Service Manual

4.2.3	PINNING
Pin		Name	I/O	Description	Remarks
52		cvbs1	I	CVBS input
53		cvbs2	I	CVBS input
54		cvbs3	I	CVBS input
55		cvbs4	I	CVBS input or Y1
56		cvbs5	I	CVBS input or C1
57		cvbs6	I	CVBS input or Y2
58		cvbs7	I	CVBS input or C2
63		Cvbso1	O	CVBS output 1
62		Cvbso2	O	CVBS output 2
61		Cvbso3	O	CVBS output 3
70		Xin	I	Crystal connection 1
69		Xout	O	Crystal connection 2
23		Vout	O	Vertical output
17		Hout	O	Horizontal output
3		i656i7	I	656 input (MSB)
2		i656i6	I	656 input
1		i656i5	I	656 input
80		i656i4	I	656 input
79		i656i3	I	656 input
78		i656i2	I	656 input
77		i656i1	I	656 input
76		i656i0	I	656 input (LSB)
75		i656iclk	I	656 input clock
39		Rin1	I	R in 1
40		Gin1	I	G in 1
41		Bin1	I	B in 1
37		Fbl1	I	Fast Blank input 1
46		Rin2	I	R in 2
47		Gin2	I	G in 2
48		Bin2	I	B in 2
38		Fbl2	I	Fast Blank input 2
14		V	I	Vertical pulse for RGB input
6		Sda	I/O	I2C ?Bus data
13		Scl	I	I2C ?Bus clock
7		Tms	I	Test mode select
19		Adr/tdi	I	I2C Address / test data in
24		Reset	I	Reset input	Reset when low
27		Clkout	O	Output clock	27MHz
59		Vdd33c	S	Supply voltage CVBS	3.3V
60		Vss33c	S	Supply voltage CVBS	0V
50		Vddac1	S	Supply voltage CVBS1	1.8V
51		Vssac1	S	Supply voltage CVBS1	0V
64		Vddac2	S	Supply voltage CVBS2	1.8V
65		Vssac2	S	Supply voltage CVBS2	0V
44		Vdd33rgb	S	Supply voltage RGB	3.3V

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CP830F Service Manual

Pin	Name	I/O	Description	Remarks
45	Vss33rgb	S	Supply voltage RGB	0V
42	Vddargb	S	Supply voltage for RGB	1.8V
43	Vssargb	S	Supply voltage for RGB	0V
35	Vddafbl	S	Supply voltage for FBL	1.8V
36	Vssafbl	S	Supply voltage for FBL	0V
68	Vddapll	S	Supply voltage for PLL	1.8V
66	Vddd1	S	Supply voltage for digital	1.8V digital
67	Vssdl	S	Supply voltage for digital	0V digital
5	Vddd2	S	Supply voltage for digital	1.8V digital
4	Vssd2	S	Supply voltage for digital	0V digital
28	Vddd3	S	Supply voltage for DRAM	1.8V digital
29	Vssd3	S	Supply voltage for digital	0V digital
34	Vddd4	S	Supply voltage for digital	1.8V digital
33	Vssd4	S	Supply voltage for digital	0V digital
72	Vddp1	S	Supply voltage for digital	3.3V pad
73	Vssp1	S	Supply voltage for digital	0V digital
12	Vddp2	S	Supply voltage for digital	3.3V pad
11	Vssp2	S	Supply voltage for digital	0V pad
25	Vddp3	S	Supply voltage for digital	3.3V pad
26	Vssp3	S	Supply voltage for digital	0V pad
71	Tclk	I	Testclock	Connect to vss
18	H50	O	Hout 50 Hz
20	V50	O	Vout 50 Hz
32	656io0	I/O	Digital input / output	LSB
31	656io1	I/O	Digital input / output
30	656io2	I/O	Digital input / output
22	656io3	I/O	Digital input / output
21	656io4	I/O	Digital input / output
16	656io5	I/O	Digital input / output
15	656io6	I/O	Digital input / output
10	656io7	I/O	Digital input / output
9	656clk	I/O	Digital input / output clock
74	656hin/clkf20	I/O	Separate H input for 20.25 clock
			output
8	656vin/blank	I/O	Separate V input for 656 / BLANK
			output
49	Vssd5	S	Supply voltage for digital	0V

4.3 DDP 3315C - DISPLAY AND DEFLECTION PROCESSOR

The DDP 3315C is a mixed-signal single-chip digital display and deflection processor, designed for high-quality backend applications in double scan and HDTV TV sets with 4:3 or 16:9 picture tubes. The interfaces qualify the IC to be combined with state of the art digital scan rate converters, as well as analog HDTV sources. The DDP 3315C contains the entire digital video component, deflection processing, and all analog interfaces to display the picture on a CRT.

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CP830F Service Manual

4.3.1 BLOCK DIAGRAM OF THE DDP 3315C

SVM

R G B FBL

LLC

Clock

analog

Pr

Y

27/32/

Generator

SVM

RGB-

Pb Input

54 MHz

Matrix

FBL

R

G B

R G B

Y /

Y

Upcon-

Y

Picture

Y

Matrix /

R

R

Analog

R

R

Input

Video

Tube

656 YCrCb

Cb

Version/

Cb

Improve-

Cb

PFG /

G

G

RGB

G

G

Output

Interface

DAC

Control

CrCb

Cr

Scaling

Cr

ment

Cr

NCE

B

B

Switch

B

B

4:2:2 /

Sense

4:1:1

Input

I2C

V

Sawtooth /

V

V

H & V

VERT+

SDA

EHT

Parabola

EW

EW

Interface

VERT

SCL

Generation

H / V

E/W

General

Sync

V

Display-

dynamic

Security

H-Drive

focus

H

H

H

Unit

purpose

Pro-

Freq.

H

Generation

HOUT

PWM

cessing

Doubling

PWM 1/2

2H / 2V

FIFO

HFLB

DFVBL

VPROT

PWMV

HSAFETY

(1H / 1V)

Controlling

4.3.2 DESCRIPTION

Video Processing

- linear horizontal scaling (0.25 ... 4), as well as nonlinear horizontal scalingpanorama vision

-dynamic black level expander

-luma sharpness enhancement by dynamic peaking and luma transient improvement (LTI)

-color transient improvement (CTI)

-programmable RGB matrix

-black stretch, blue stretch, gamma correction via programmable Non-linear Colorspace Enhancer (NCE) on RGB

-two analog double scan inputs with fast blank (one RGB and one RGB/YC r C b /YP r P b selectable)

-average and peak beam current limiter

-automatic picture tube adjustment (cutoff, drive)

-histogram calculation

Deflection Processing

-scan velocity modulation output

-digital EHT compensation for vertical / east-west

-soft start/stop of horizontal-drive

-vertical angle and bow correction

-differential vertical outputs

-vertical zoom via deflection adjustment

-horizontal and vertical protection circuit

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