DAEWOO DTD-21H9 Service Manual

SM No :TCP093FEF0

Service Manual

COLOR TELEVISION

CHASSIS : CP-093F

MODEL : DTD-21H9

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.

http : //svc.dwe.co.kr

Jan. 2005

	CP-093F Service Manual

CONTENTS
1. MAIN FEATURES	2
1.1 SPECIFICATIONS	2
1.1.1 GENERAL	2
1.1.2 EURO-SCART 1(21Pin)	3
1.1.3 CHANNEL/FREQUENCY TABLE	4
2. SAFETY INSTRUCTION	7
3. ALIGNMENT INSTRUCTIONS	8
3.1 MICROCONTROLLER CONFIGURATION:SERVICE MODE	8
3.2 SERVICE MODE NADVIGATION	8
3.3 MICROCONTROLLER CONFIGURATION:OPTION BITS	8
3.4 OPTION 1	9
3.5 OPTION 2	9
3.6 NVM default setting	10
4. TV SET ALIGNMENT	12
4.1 G2 ALIGNMENT	12
4.2 WHITE BALANCE	12
4.3 FOCUS	12
4.4 VERTICAL GEOMETRY	12
4.5 HORIZONTAL PICTURE CENTRING	12
4.6 EAST/WEST CORRECTION	12
4.7 AGC	13
5 IC DESCRIPTION	14
5.1 UOC/// Series	14
5.1.1 IC MARKING AND VERSION	14
5.1.2 BLOCK DIAGRAM	15
5.1.3 PINNING	16
5.1.4 FEATURES	17
5.2 TDA8944J STEREO AUDIO AMPLIFIER	22
5.2.1 FEATURES	23
5.3 TDA8357J VERTICAL AMPLIFIER	25
5.3.1 TDA8357J	25
5.4 TDA6107AJE	28
5.4.1 Features	28
5.4.2 Pin description	28
5.5 24WC16-16KB EEPROM	29
5.6 STR-F6756/4	30
5..6.1 Functions of Each Terminal	30
5..6.2 Block Diagram(Connection diagram)	30
5..6.3 CONTROL PART - ELECTRICAL CHARACTERISTICS	33
6. SPECIFICATIONS	34
7. SERVICE PARTS LIST	37
8. EXPLODED VIEW	51

9. SCHEMATIC DIAGRAM

CP-093F 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
		consumption		21” : 74W
		Sound Output
		Power		20” : 3W x 2 (at 60% mod, 10%THD)
		Speaker
				21” : 5W 8 ohm x2 is not connected)
		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
				21” : 51cm
		Channel indication		On Screen Display
		Program Selection		100 programmes
		Aux. terminal		- EURO-SCART : Audio / Video In and Out, R/G/B
				In, Slow and Fast switching.
				- Headphone jack on front of cabinet
				(21”)
				- AV2 : Video and Audio L/R out, Headphone jack
				at side of cabinet.
		Remote Control		R-52C03
		Unit

			CP-093F Service Manual
1.1.2 EURO-SCART 1 (21 Pin)

Pin	Signal Description	Matching value
1	Audio Output Right	0.5	Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
2	Audio Input Right	0.5	Vrms, Impedance > 10 kΩ
3	Audio Output Left	0.5	Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
4	Audio Earth
5	Blue Earth
6	Audio Input Left	0.5	Vrms, Impedance > 10 kΩ
7	Blue Input	0.7	Vpp ±0.1V, Impedance 75Ω
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	0.7	Vpp ± 0.1V, Impedance 75Ω
12	N.C.
13	Red Earth
14	Blanking Earth
15	Red Input	0.7	Vpp ± 0.1V, Impedance 75Ω
16	Fast Switching	0 to 0.4V : Logic “0”, 1 to 3V : Logic “1”, Impedance 75Ω
17	Video Out Earth
18	Video In Earth
19	Video Output	1 Vpp ± 3dB, Impedance 75Ω
20	Video Input	1 Vpp ± 3dB, Impedance 75Ω
21	Common Earth

CP-093F 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

				CP-093/F 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

				CP-093F 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

CP-093F 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.

CP-093F 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;

CP-093F Service Manual

3.4

OPTION 1

TOP

FASTEXT

TUBE

VAI bit set

Dolby

SVHS3

TUNER OPTIONS

Teletext

(FLOF)

to 1 in

Virtual

4:3

disable

00 = Philips

OFF

SECAM L

OFF

01 = Not used

TOP

VAI bit set

Dolby

FASTEXT

TUBE

SVHS3

10 = Alps

Teletext

to 0 in

Virtual

(FLOF) ON

16:9

enable

11 = Parstnic (DW)

SECAM L

3.5

OPTION 2

JVC

AVL

PICTURE

14”

Full

Double

n.u.

remote

control

(AV2

ATSS

Window

Must

TILT ON

control

OFF

OFF)

Enabled

be set

Fixed to

to 1 for

‘0’

Daewoo

AVL

21”

Double

PICTURE

Basic

future

Remote

control

(AV2

Window

TILT OFF

ATSS

compa

control

ON)

Disabled

tibility

CP-093F 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 values 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 “ON/ENTER” 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/Down keys to change the data at selected address. You must press " OK/ENTER" 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.

CP-093F Service Manual

NVM DATA CHANGE LIST			(hex)
No	Register Name	Address	Default	14H9	21H9
1	OCP_THRESHOLD	0x58F	0x91	<-	<-
2	DCXO	0x590	0x4E	<-	<-
3	AVLLEV	0x621	0x5	<-	<-
4	TELETEXT - Brightness	0x642	0x19	<-	<-
5	OSD - Brightness	0x644	0x7	<-	<-
6	Nor1_Bright	0x64A	0x23	<-	<-
7	Nor1_contrast	0x64B	0x2E	<-	<-
8	Nor1_Colour	0x64C	0x1C	<-	<-
9	Nor1_Sharpness	0x64D	0x23	<-	<-
10	Nor1_Tint	0x64E	0x20	0x1F	0x1F
11	Nor2_Bright	0x653	0x28	<-	<-
12	Nor2_Contrast	0x654	0x13	<-	<-
13	Nor2_Colour	0x655	0x19	<-	<-
14	Nor2_Sharpness	0x656	0x1B	<-	<-
15	Nor2_Tint	0x657	0x20	0x1F	0x1F
16	V - Linearity	0x667	0x2A	0x22	0x27
17	Peak White Level	0x671	0x1	<-	<-
18	Soft Clipping Level	0x672	0x5	0x7	0x7
19	PresetGainRGB	0x673	0x2A	0x1	0x7
20	PresetGainRGB	0x674	0x2A	0x1	0x7
21	PresetGainRGB	0x675	0x2A	0x1	0x7
22	Cathode_Drive	0x67B	0x1	<-	<-
23	RPA	0x680	0x1	0x2	0x2
24	Black Stretch	0x682	0x1	0x2	0x2
25	BSD	0x683	0x1	0x0	0x0
26	AAS	0x684	0x1	0x0	0x0
27	BCS	0x685	0x1	<-	<-
28	Y_delay_PAL_BG	0x686	0x5	<-	<-
29	Y_delay_SECAM_BG	0x687	0x8	<-	<-
30	Y_delay_PAL_DK	0x688	0x5	<-	<-
31	Y_delay_SCM_DK	0x689	0x5	<-	<-
32	Y_delay_PAL_I	0x68A	0x7	<-	<-
33	Y_delay_SECAM	0x68B	0x5	<-	<-
34	Y_delay_SECAM-L	0x68C	0x8	<-	<-
35	Y_delay_AV	0x68D	0xA	<-	<-
36	G2_Bright	0x68E	0x1A	<-	<-
37	G2_Contrast	0x68F	0x42	<-	<-

CP-093F Service Manual

4. TV SET ALIGNMENT

4.1 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).

4.2 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.

4.3 FOCUS

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

4.4 VERTICAL GEOMETRY

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

4.5 HORIZONTAL PICTURE CENTRING

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

4.6 EAST / WEST CORRECTION

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

HOR PARAL

CP-093F Service Manual

HOR WIDTH adjust for 93% overscan.

PARABOLA

CORNER B & CORNER T

EW TRAPEZ

4.7 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.

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