Daewoo CM-012M Service Manual

S/M No. : TCM012MEF0

Service Manual

Color Television

CHASSIS : CM-012M

Model : DTH-29M2FS

Specification

Items TV Standard Power Input

Power Consumption Tuning System

Tuning Ranges

Sound Output Speaker

Antenna Input Impedance

Auxiliary Input Terminal

Auxiliary Output Terminal

Intermediate Frequencies

Model

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

8 ohm

Picture IF Carrier Frequency : 45.75MHz Sound IF Carrier Frequency : 41.25MHz Color Sub-Carrier Frequency : 3.579545MHz

DTH-29M2FS

PAL-M/N

220V, 50/60Hz 125W Frequency Synthesizer(FS)Tuning System

TV VHF(L) : CH2 - CH6

7W+7W

12W 2EA

75 ohm Unbalanced

Font: Video , Audio(R,L) Rear: Video, Audio(R,L)

Rear: Video, Audio(R,L)

Remote Control

Special Function

R-43A05

1) Icon Type

2) 4-Language OSD

3) With CAPTION

4) CH Label

5) Digital Sensor

6) Surround

7) AVC

8) Wide Picture(Option)

D AEW OO ELECTR ONICS CO., LTD

http : //svc.dwe .co.kr

Feb. 2001

TABLE OF CONTENTS

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...............................................................................................................................20

PRINTED CIRCUIT BOARD................................................................................................................21

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

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

TV STANDARD PAL-M/N POWER INPUT 220V , 50/60Hz POWER CONSUMPTION 125W TUNING SYSTEM Frequency Synthesizer ( FS ) Tuning System

TV VHF(L) : CH2 ~ CH6 UHF(H) : CH7 ~ CH13

UHF : CH14 ~CH69

TUNING RANGES

SOUND OUTPUT 7 W+ 7 W SPEAKER 8 ohm 12W 2EA ANTENNA INPUT

IMPEDANCE AUXILIARY INPUT TER-

MINAL AUXILIARY OUTPUT

TERMINAL

INTERMEDIATE FREQUENCIES

REMOTE CONTROL R-43A05

SPECIAL FUNCTIONS

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

CH2 ~ CH6 VHF(H) : C-W +11 CH7 - CH13 UHF : W +12- W+84

Picture IF Carrier Frequency : 45.75 MHz

Sound IF Carrier Frequency : 41.25 MHz

Color Sub-Carrier Frequency : 3.579545 MHz

1) ICON MENU TYPE 5) DIGITAL SENSOR

2) 4-LANGUAGE OSD 6)SURROUND

3) WITH CAPTION 7) AVC(Auto Volume Control)

4) CH LABLE 8)WIDE PICTURE(OPTION)

DTH-29M2FS REMARKS

75 ohm Unbalanced

SIDE : VIDEO, AUDIO(R,L)

REAR : VIDEO , AUDIO(R,L)

REAR : VIDEO, AUDIO(R,L)

CIRCUIT BLOCK DIAGRAM

ALIGNMENT INSTRUCTION

Your Remote Control(R-43A05)

1. POWER use this button to turn your TV on or off.

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

POWERMUTE

3. CH Use these buttons to change your TV's volume, to activate selections in the menu system.

4 5

VOL VOL

3 4

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

1 2 3

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

4 5 6

6. DISPLAY

7 8

Use this button to display the channel numbeer and status.

SLEEP PREVIOUS

VIDEOINPUTDISPLAY

8 7

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.

ALIGNMENT INSTRUCTIONS

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.

1 → MUTE → DISPLAY → MUTE

•

Then, the screen will appear as follows.

S2 SCRN S5 IFC S6 GEO S8 W/B S9 DP S12 FACT

•

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

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

I701

(U-COM)

I101

(MAIN)

I702

(EEPROM)

NECESSARY UNNECESSARY

ADJUSTMENT

Initial setting values are written from I701.

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

Data is stored in I703.

ADJUSTING ITEMS

S5 : RFAGCD

S8 : RD/GD/BD/RB/GB/BB S9 Subbrightness

menus

NOTES

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

ALIGNMENT INSTRUCTIONS

Table-B

MODE ADJUSTMENT ITEMS

S2 Screen Adjustment - -

S6(4:3)

S6-2(16:9)

S11

S12 Forwarding Mode - Factory initialization

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 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 * 13 0~31 Must be set to 13 H-SIZE * 27 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 7 0~7 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 2 0~15 Must be set to 2 BOT-C 3 0~15 Must be set to 3 H-CENTER(60-50Hz) * 5 0~31 Must be set to 5 V-CENTER(60-50Hz) * 8 0~63 Must be set to 8 V-LIN(60-50Hz) * 0 0~31 Must be set to 0 WVPOS * 22 0~63 Align vertical DC bias,using internal cross pattern(s11) WVPOS(60-50Hz) * 8 0~63 Must be set to 8 W-V-SIZE * 48 0~127 Align vertical amplitude,using internal cross pattern(s11) W-V-LIN * 13 0~31 Must be set to 13 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 0 0~15 Must be set to 0 W-TOP-C 2 0~15 Must be set to 2 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 * 160 0~255 Must be set to 160 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 5 0~30 DP-COLOR 27 0~27 DP-TINT 38 0~77 VIDEO LEVEL 7 0~7 FM LEVEL 30 0~31 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

INITIAL RANGE

DATA

REMARKS

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.

CAUTION

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

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.

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

ALIGNMENT INSTRUCTIONS

•

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.

NORMAL BLACK WHITE100 WHITE60 CROSS

•

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

•

Select service adjustment S6

•

You can see the OSD as shown in below.

H-CENTER 11 V-CENTER 22 V-LIN 13 H-SIZE 27 V-SIZE 96 V-S 12 V-SIZE-C 7 PIN 30 TILT 37 TOP-C 2 BOT-C 3

WVPOS 48 W-VSIZE 22 W-VLIN 13 W-VS 12 W-PCUTION 17 W-TILT 37 W-TOPC 0 W-BOTC 2

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

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.

RD 63 GD 15 BD 63

RB 127 GB 160 BB 127

MOVE ADJUST RECALL : SET

•

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.

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

•

Select Subbrightness item, adjust Subbrightness data value

•

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”

ALIGNMENT INSTRUCTIONS

to obtain normal

brightness level.

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ELECTRICAL PARTS LIST

CAUTION

“ “ is a safety part, so it must be used the same part.

“ ” is a recommendable part for essential stock.

LOC PART CODE PART NAME PART DESCRIPTION REMARK

ZZ100 48B4343A05 TRANSMITTER REMOCON R-43A05 (AA) ZZ110 PTACPWD403 ACCESSORY AS DTH-29M2FS 30 4850Q00810 BATTERY R6P/LN M821 4858213800 BAG INSTRUCTION L.D.P.E T0.05X250X400 ZZ120 PTBCSHD403 COVER BACK AS DTH-29M2FS

M211 4852157100 COVER BACK FR HIPS BK M591 4855934100 DECO AV PVC CL T0.2 M781 4857817630 CLOTH BLACK FELT 400X20X0.7 M782 4857817612 CLOTH BLACK FELT 250X20X0.7 ZZ130 PTPKCPJ811 PACKING AS DTQ-29M2 M641 6520010100 STAPLE PIN 18M/M J D O

M681 4856812400 BAND 18MM X 3M M801 4858057600 BOX CARTON DW-3 M811 4858194600 PAD A EPS M821 4858215600 BAG P.E PE FOAM t0.5x1600x1270 ZZ131 58G0000145 COIL DEGAUSSING DC-29S2 ZZ132 48519A4210 CRT GROUND NET 2901H-1015-2P

ZZ140 PTCACAD403 CABINET AS DTH-29M2FS 40 2TF01612CL TAPE FILAMENT 12MMX55ME CLEAR M191A 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN M201A 4856015800 SCREW CRT FIX L=27 M201B 4856215402 WASHER RUBBER CR T2.0 M201C 4856013610 SCREW SPKR FIX L=16 A=17

M201D 4856816300 CLAMP WIRE NYLON 6 (V0) M211A 7172401612 SCREW TAPPTITE TT2 TRS 4X16 MFZN BK M211B 7172401612 SCREW TAPPTITE TT2 TRS 4X16 MFZN BK M211C 7172401612 SCREW TAPPTITE TT2 TRS 4X16 MFZN BK M352 4853535600 HOLDER CORD NYROLN 66 M481 4854857401 BUTTON POWER A ABS GY

M481A 4856715600 SPRING SWPA PIE 0.4 M541 4855419800 SPEC PLATE ART 150 M561 48556174SD MARK BRAND SILVER DIA-CUTTING M591 4855934202 DECO PLATE ABS GY M591A 7172401612 SCREW TAPPTITE TT2 TRS 4X16 MFZN BK M592 4855934601 DECO EYE ABS BLUE

M592A 7178301212 SCREW TAPPTITE TT2 WAS 3X12 MFZN BK M593 4855934100 DECO AV PVC CL T0.2 M781 4857818702 CLOTH BLACK FELT T0.7 L=350 W=15 M782 4857821102 CLOTH BLACK FELT 340X10X1.5 M901 2224050027 BOND SILICON TSK-5370 SP01A 7172401212 SCREW TAPPTITE TT2 TRS 4X12 MFZNCK

SP02A 7172401212 SCREW TAPPTITE TT2 TRS 4X12 MFZNCK

V901 4859629662 CRT A68KTB259X010 M16

ZZ200 PTFMSJD403 MASK FRONT AS DTH-29M2FS M201 4852075201 MASK FRONT HIPS GY

LOC PART CODE PART NAME PART DESCRIPTION REMARK

M251A 4852541301 GRILL R PS T0.45 M251B 4852541401 GRILL L PS T0.45 ZZ202 PTSPPWD403 SPEAKER AS DTH-29M2FS P601A 4850704S31 CONNECTOR YH025-04+35098+ULW=800 SP01 4858311110 SPEAKER 12W 8 OHM SP-58126F

SP02 4858311110 SPEAKER 12W 8 OHM SP-58126F ZZ204 PTJASWJ811 PCB JACK AS DTQ-29M2 JA02 4859105450 JACK PIN BOARD YSC03P-4120-9S M112 4851114001 PANEL AV ASSY 2326801+5934300 M112A 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN M684 4856812001 TIE CABLE NYLON66 DA100

P201A 4850705S04 CONNECTOR YH025-05+YST025+ULW=400 ZZ200 PTJAJAJ811 PCB JACK AXIAL AS DTQ-29M2 A001 4859802917 PCB JACK 79.05X27.3(197X246/14)S1B CC608 CCZB1H102K C CERA 50V B 1000PF K (AXIAL) CCS07 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)

RC636 RD-AZ473J- R CARBON FILM 1/6 47K OHM J

RCS33 RD-AZ473J- R CARBON FILM 1/6 47K OHM J ZZ210 PTUNSWJ811 PCB UNION AS DTQ-29M2 A001 4859806060 PCB UNION 246X35(246X246/6) S1B DF01 DKLR114L-- LED KLR114L IF01 1SR9HP---- IC PREAMP SR-9HP IF02 1PNA4603H- IC PHOTO SENSOR PNA4603H

M191 4851942400 BUTTON CTRL 4946801+5540901 P103A 4850703S19 CONNECTOR YH025-03+YST025+ULW=300 P701A 4850705S02 CONNECTOR YH025-05+YST025+ULW=200 ZZ200 PTUNJBJ811 PCB UNION M-10 AS DTQ-29M2 ZZ200 PTUNJRJ811 PCB UNION RADIAL AS DTQ-29M2 SW702 5S50101Z90 SW TACT THVV502GDA

SW703 5S50101Z90 SW TACT THVV502GDA SW704 5S50101Z90 SW TACT THVV502GDA SW705 5S50101Z90 SW TACT THVV502GDA SW706 5S50101Z90 SW TACT THVV502GDA ZZ200 PTUNJAJ811 PCB UNION AXIAL AS DTQ-29M2 C701 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z

CC716 CCZF1H103Z C CERA 50V F 0.01MF Z CF01 CCZF1H103Z C CERA 50V F 0.01MF Z D721 DMTZJ5R6B- DIODE ZENER MTZJ 5.6B R701 RD-AZ240J- R CARBON FILM 1/6 24 OHM J RC742 RD-AZ222J- R CARBON FILM 1/6 2.2K OHM J RC746 RD-AZ152J- R CARBON FILM 1/6 1.5K OHM J

RC747 RD-AZ392J- R CARBON FILM 1/6 3.9K OHM J RC750 RD-AZ102J- R CARBON FILM 1/6 1K OHM J

RC751 RD-AZ102J- R CARBON FILM 1/6 1K OHM J

RF01 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING

R R

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