Daewoo DTQ-29M2FS Manuel utilisateur

Service Manual

ColorTelevision

CHASSIS :CN-012N

Model :DTQ-29M2FS

Feb.2001

DAEWOO ELECTRONICS CO.,LTD

http ://svc.dwe.co.kr

Specification

120/220V, 50/60Hz

NTSC-M

TV VHF(L) :CH2 - CH6

UHF(H):CH7-CH13

UHF :CH14-CH69

CATV VHF(L) :5A, A,B, A-5-A-1

CH2 - CH6

VHF(H) :C-W+11

CH7 - CH13

UHF :W+12-W+84

7W+7W

8 ohm

75 ohm Unbalanced

Picture IF Carrier Frequency :45.75MHz

Sound IF Carrier Frequency :41.25MHz

Color Sub-Carrier Frequency :3.579545MHz

R-43A05

130W

Frequency Synthesizer(FS)Tuning System

1) Icon Type

2) 4-Language OSD

3) With CAPTION

4) CH Label

S/M No.:TCN012NEF0

DTQ-29M2FS

Model

Items

TV Standard

Power Input

Power Consumption

Tuning System

Tuning Ranges

Sound Output

Speaker

Antenna Input Impedance

Intermediate Frequencies

Remote Control

Special Function

12W 2EA

Auxiliary Input Terminal

Auxiliary Output Terminal

Font:Video, Audio(R,L)

Rear:Video, Audio(R,L)

5) Digital Sensor

6) Surround

7) AVC

8) Wide Picture(Option)

DTQ-29M2FS

✔

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).

TABLE OF CONTENTS

APPENDIX (Appendix is provide only by internet [http://svc.dwe.co.kr])

SPECIFICATIONS...............................................................................................................................2

CIRCUIT BLOCK DIAGRAM.............................................................................................................. 3

ALIGNMENT INSTRUCTIONS............................................................................................................4

YOUR REMOTE CONTROL............................................................................................................................4

SERVICE MODE ADJUSTMENT....................................................................................................................5

ASSEMBLY ADJUSTMENT.............................................................................................................................6

SCHEMATIC DIAGRAM......................................................................................................................10

ELECTRICAL PARTS LIST.................................................................................................................11

EXPLODED VIEW...............................................................................................................................21

PRINTED CIRCUIT BOARD................................................................................................................22

IC DESCRIPTION................................................................................................................................1

CHIP COMPONENTS POSITION........................................................................................................3

TROUBLE SHOOTING GUIDE...........................................................................................................9

NO POWER.....................................................................................................................................................9

NO PICTURE...................................................................................................................................................10

NO SOUND......................................................................................................................................................11

CH DON’T STOP.............................................................................................................................................12

NO COLOR......................................................................................................................................................13

NO VERTICAL DEFLECTION.........................................................................................................................13

NO ON-SCREEN DISPLY...............................................................................................................................14

NO REMOCON RECEIPT...............................................................................................................................14

SPECIFICATIONS

MODEL

ITEMS DTQ-29M2FS REMARKS

TV STANDARD NTSC-M

POWER INPUT 120/220V , 50/60Hz

POWER CONSUMPTION 130W

TUNING SYSTEM Frequency Synthesizer ( FS ) Tuning System

TUNING RANGES

TV VHF(L) : CH2 ~CH6

UHF(H) : CH7 ~CH13

UHF : CH14 ~CH69

CATV VHF(L) : 5A, A,B, A-5 -A-1

CH2 ~ CH6

VHF(H) : C-W +11

CH7 - CH13

UHF : W +12- W+84

SOUND OUTPUT 7 W+ 7 W

SPEAKER 8 ohm 12W * 2EA

ANTENNA INPUT

IMPEDANCE 75 ohm Unbalanced

AUXILIARY INPUT TER-

MINAL FRONT : VIDEO, AUDIO(R,L)

REAR : VIDEO , AUDIO(R,L)

AUXILIARY OUTPUT

TERMINAL REAR : VIDEO, AUDIO(R,L)

INTERMEDIATE

FREQUENCIES

Picture IF Carrier Frequency : 45.75 MHz

Sound IF Carrier Frequency : 41.25 MHz

Color Sub-Carrier Frequency : 3.579545 MHz

REMOTE CONTROL R-43A05

SPECIAL FUNCTIONS

1) ICON MENU TYPE 5) DIGITAL SENSOR

2) 4-LANGUAGE OSD 6)SURROUND

3) WITH CAPTION 7) AVC

4) CH LABLE 8)WIDE PICTURE(OPTION)

CIRCUIT BLOCK DIAGRAM

ALIGNMENT INSTRUCTION

1. POWER

use this button to turn your TV on or off.

2. MUTE

Use to turn the TV's sound on and off.

3. CH

Use these buttons to change your TV's volume, to

activate selections in the menu system.

4. VOL

Use thesebuttons to change your TV's volume, to

activate selections in the meny system, or to change

audio and video settings.

5. MENU

Use this button to turn the TV's menu system on and off.

6. DISPLAY

Use this button to display the channel numbeer and

status.

7. INPUT

Use this button to select the TV's signal source.

8. VIDEO

Use this button to display video adjustment.

9. 0-9

Use these buttons to change channels.

10. SLEEP

Use this button to program the TV to turn off after a

certain time.

11. PREVIOUS

Use this button to return to the previous channel you

were watching.

POWERMUTE

SLEEP PREVIOUS

VIDEOINPUTDISPLAY

123

456

VOL VOL

Your Remote Control(R-43A05)

1. SERVICE MODE ADJUSTMENTS

Follow the steps below whenever service adjustment is required. See Table- A and Table- B to determine if

service adjustments are required.

1) How to enter the service mode using the user remote control.

•

Turn the set on.

•

Direct the remote control to the reception window of TV.

•

Push buttons of remote control in sequence as follows.

→

MUTE

→

DISPLAY

→

MUTE

•

Then, the screen will appear as follows.

•

Using the channel up or channel down button, select the item you wish to adjust.

(The color of selected item turns into the red.)

•

Press the volume up or down button to enter in the service mode you wish to adjust.

2) How to memorize the adjusted values in the service mode.

•

Must press

DISPLAY

button the state which the screen is displaying each of service

menus

after all adjustments are completed each of all service menu.

Table-A : Adjust the values of service mode when a part is replaced.

PART

REPLACED

ADJUSTMENT NOTES

NECESSARY UNNECESSARY

I701

(U-COM) OData is stored in I703.

I101

(MAIN) O

I702

(EEPROM) Initial setting values are written from I701.

ADJUSTING ITEMS

S5 : RFAGCD

O S6 : H.PHASE/V.POSI/V.SIZE

S8 : RD/GD/BD/RB/GB/BB

S9 Subbrightness

CRT OAdjust items related to picture tube only.(White Balance adjustment)

ALIGNMENT INSTRUCTIONS

S2 SCRN

S5 IFC

S6 GEO

S8 W/B

S9 DP

S12 FACT

Table-B

indicates the items with different settings each of sets

2. ASSEMBLY ADJUSTMENTS

1) SCREEN ADJUSTMENT (S2)

•

Enter the service mode and select service adjustment S2.

•

You can see the one horizontal line on the screen.

•

Adjust the Screen Control Volume (located on FBT) so that the horizontal line onscreen may be

disappeared.

•

Press the volume up or down button to exit in the screen adjustment mode.

MODE ADJUSTMENT DATA REMARKS

INITIAL RANGE

S2 Screen Adjustment

IF CONTROL

RF AGC DELAY * 20 0 ~63 Align RF AGC threshold

AGC POINT 3.75 3.25~4.0 Select AGC reference voltage

A/D VALUE - -

FM/AM PRESCALE 18 0~255 Must be set to 18

SCART PRESCALE 18 0~255 Must be set to 18

MONITOR VOLUME 119 0~255 Must be set to 119

S6(4:3)

H-CENTER * 11 0~31 Align sync to flyback pulse,using internal cross pattern(s11)

V-CENTER * 22 0~63 Align vertical DC bias,using internal cross pattern(s11)

V-LIN * 12 0~31 Must be set to 12

H-SIZE * 32 0~63 Align sync to flyback pulse,using internal cross pattern(s11)

V-SIZE * 96 0~127 Align vertical amplitude,using internal cross pattern(s11)

V-S 12 0~31 Must be set to 12

V-SIZE-C 70~7 Must be set to 7

P-CUSHION * 30 0~63 Align pincution,using internal cross pattern(s11)

TILT * 37 0~63 Align tilt,using internal cross pattern(s11)

TOP-C 80~15 Must be set to 8

BOT-C 80~15 Must be set to 8

S6-2(16:9)

WVPOS * 22 0~63 Align vertical DC bias,using internal cross pattern(s11)

W-V-SIZE * 48 0~127 Align vertical amplitude,using internal cross pattern(s11)

W-V-LIN * 12 0~31 Must be set to 12

W-V-S 12 0~31 Must be set to 12

W-P-CUSHIO * 17 0~63 Align pincution,using internal cross pattern(s11)

W-TILT * 37 0~63 Align tilt,using internal cross pattern(s11)

W-TOP-C 80~15 Must be set to 8

R-DRIVE * 63 0~127 Align red out AC level

G-DRIVE * 15 0~15 Must be set to 15

B-DRIVE * 63 0~127 Align blue out AC level

R-BIAS * 127 0~255 Align red out DC level

G-BIAS * 127 0~255 Must be set to 127

B-BIAS * 127 0~255 Align blue out DC level

SUB-BRIGHT * 75 0~127 Align common RGB DC level

DP-CONTRAST 27 0~27

DP-SHARPNESS 50~30

DP-COLOR 27 0~27

DP-TINT 38 0~77

VIDEO LEVEL 70~7

FM LEVEL 30 0~31

S11

internal black - - Display internal black pattern

internal 100% white - - Display internal 100% white

internal 60% white - - Display internal 60% white

internal cross pattern - - Display internal cross pattern

S12 Forwarding Mode -Factory initialization

IN THE SCREEN ADJUSTMENT MODE, DONT PRESS OTHER BUTTONS EXCEPT VOLUME UP OR DOWN BUTTON.

CAUTION

ALIGNMENT INSTRUCTIONS

2) FOCUS ADJUSTMENT

•

Turn in a local station and adjust the Focus Control knob (located on FBT) for best picture

details at high light condition.

3) RF AGC DELAY ADJUSTMENT (S5)

•

Receive a good local channel.

•

Enter the service mode and select service adjustment S5.

•

You can see the OSD as shown in below.

•

Select RFAGCD item, press the volume up or down button until noise or beat in picture disappears.

•

Press the DISPLAY button to memorize the data.

4) GEOMETRIC ADJUSTMENTS (S6)

•

Enter the service mode and select service adjustment S11.

•

Whenever you select the “S11” using the volume up or down button, the screen is changing like this.

•

Using the volume up or down button, select internal cross pattern.

•

Select service adjustment S6

•

You can see the OSD as shown in below.

4-1. Horizontal Position Adjustment

•

Select H-CENTER item, adjust H-CENTER data value to obtain proper horizontal centering of the

internal cross pattern at the left and right of the screen.

4-2. Vertical Position Adjustment

•

Select V-CENTER item, adjust V-CENTER data value to center the raster properly on the screen.

ALIGNMENT INSTRUCTIONS

IF CONTROL

AUTO RFAGC START

RFAGC DELAY 2.0

AGC POINT 3.75

A/D VALUE :9DH

FM/AM PRESCALE 18

SCART PRESCALE 18

MONITOR VOLUME 119

MOVE ADJUST RECALL : SET

NORMAL BLACK WHITE100 WHITE60 CROSS

WVPOS 48

W-VSIZE 22

W-VLIN 12

W-VS 12

W-PCUTION 17

W-TILT 37

W-TOPC 8

W-BOTC 8

H-CENTER 11

V-CENTER 22

V-LIN 12

H-SIZE 32

V-SIZE 96

V-S 12

V-SIZE-C 7

PIN 30

TILT 37

TOP-C 8

BOT-C 8

ALIGNMENT INSTRUCTIONS

4-3. Vertical Size Adjustment

•

Select “V.SIZE” item, adjust “V.SIZE” data value to proper vertical size as follows.

5) WHITE BALANCE ADJUSTMENT(S8)

•

Receive a good local channel.

•

Enter the service mode and select service adjustment S8.

•

You can see the OSD as shown in below.

•

Using volume up or volume down, adjust service adjustment data of RD/GD/BD and RB/GB/BB until a good gray

scale with normal whites is obtained.ALIGNMENT INSTRUCTIONS

•

Press the DISPLAY button to memorize the data.

6) DIGITAL PRESET(D.P) ADJUSTMENTS(S9)

SUBBRIGHTNESS ADJUSTMENT

•

Receive a good local channel.

•

Enter the service mode and select service adjustment S9.

•

You can see the OSD as shoown in below.

RD 63

GD 15

BD 63

RB 127

GB 127

BB 127

MOVE ADJUST RECALL : SET

SUB BRIGHTNESS 75

DP-CONTRAST 27

DP-SHARPNESS 5

DP-COLOR 27

DP-TINT 38

VIDEO LEVEL 7

FM LEVEL 30

MOVE ADJUST RECALL : SET

ALIGNMENT INSTRUCTIONS

•

Select Subbrightness item, adjust Subbrightness data value

to obtain normal

brightness level.

•

Press the DISPLAY button to memorize the data.

CONTRAST

•

Fixed value = 27

TINT

•

Fixed value = 38

COLOR

•

Fixed value = 27

7) FACTORY OUTGOING MODE (S12 : FACT)

•

If you select the S12, then the set becomes factory outgoing status.

•

You can see the OSD “outgoing OK”

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