Daewoo DTR-14D9ME Bedienungsanleitung

Service Manual

COLOR TELEVISION

CHASSIS : CM-908S

Model : DTR-14D9/20D9/21D9 ME/MP/MT/MZ

S/M No. : TCM908SEF0

DTR-14D2/21D2 ME/MP/MT/MZ

DTR-1420/2120 ME/MP/MT/MZ

DTR-2131/2132 ME/MP/MT/MZ

MODEL

TEXT

PIP

MODEL OPTION LIST

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 L( arts rice List)in

Service Information Center(http://svc.dwe.co.kr)

DAEWOO ELECTRONICS Corp.

Jan. 2004

-1-

1. SPECIFICATIONS 2

2. SAFETY INSTRUCTION 3

3. ALIGNMENT INSTRUCTIONS 5

4. ELECTRICAL PARTS LIST (Different Parts) 13

5. DIFFERENT PARTS

5-1. CRT INCH DIFFERENT PARTS OF CM-908S 18

5-2. FUNCTION DIFFERENT PARTS OF CM-908S 20

6. SCHEMATIC DIAGRAM 21

7. PRINTED CIRCUIT BOARD 22

8. MECHANICAL EXPLODED VIEW AND PARTS LIST 23

9. IC DESCRIPTION 26

10. TROUBLE SHOOTING CHARTS 55

TABLE OF CONTENTS

ABLE OF CONTENTS

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

-2-

1. SPECIFICATIONS

Items Model DTR-14D9/20D9/21D9 ME/MP/MT/MZ

DTR-14D2/21D2 ME/MP/MT/MZ

DTR-1420/2120 ME/MP/MT/MZ

DTR-2131/2132 ME/MP/MT/MZ

TV Standard Color system PAL/SECAM, NTSC-4.43(AV)

Sound system B/G, D/K, I

Rated Voltage AC 110~250V, 50/60Hz

Power consumption 14”=57W, 20”=69W, 21”=72W, 21”(Flat)=74W

Sound Output Power 5W+5W(14”,20”), 7W+7W(21”,21”flat)

VHF-L : IC1-S6CH (43.25MHz~140.25MHz)

Channel Coverage VHF-H : IC1-S36CH (147.25MHz~423.25MHz)

UHF : S37-C57CH(431.25MHz~863.25MHz)

Tuning System FS Tuning System

Program No. Indication ON-Screen Display

Program Selection 100 Programs

Aux. Terminal AV input AV1(Rear) : RCA or Euro-Scart

AV2(Front) : RCA

DVD(Rear) : RCA -> Y, Cr, Cb, or CVBS input

AV output Monitor Out : Rear RCA

TV out : Rear Scart (Optional)

Remote Control Unit R44C07

14” : 37Cm (Diagonal)

Screen size 20” : 48Cm (Diagonal)

21”, 21”flat : 51Cm (Diagonal)

BEFORE SERVICING THIS CHASSIS READ THE “X-RAY RADIATION PRECAUTIONS”,

“SAFETY PRECAUTIONS”AND “PRODUCT SAFETY NOTICE”BELOW.

-3-

2. SAFETY INSTRUCTION

NOTE

X-RAY RADIATION PRECAUTIONS

SAFETY PRECAUTIONS

PRODUCT SAFETY

1. Excessive high voltage can produce potentially hazard-

ous 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

25kV(21”) at max beam current. The high voltage must

not, under any circumstances, exceed 27kV(21”). Each

time a receiver requires servicing, the high volt-age

should be checked. It is recommended the reading

of the high voltage recorded as a part of the service

recorded as a part of the service records. 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 continuous RADIATION

protection, the replacement tube must be exactly the

same type tube as specified in the “PART LIST”.

1. Potentials of high voltage are present when this receiver

is operating. Operation of the receiver outside the

cabinet or with the back cover removed involves a

shock hazard from the receiver.

1) Servicing should not be attempted by anyone who is not

thoroughly familiar with the precautions necessary

when working on high voltage equipment.

2) Always discharge the picture tube to avoid the shock

harzard before removing the anode cap.

3) 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.

2. If any FUSE in this TV receiver is blown, replace it will

the FUSE specified in the “PART LIST”.

3. When replacing a high wattage resistor (oxide metal

film resistor) in circuit board, keep the resistor 10mm

away from circuit board.

4. Keep wires away from high voltage or high temperature

components.

5. This receiver must operate between AC 100-240

volts,50/60Hz. NEVER connect to DC supply or any

other power or frequency.

Many electrical and mechanical parts in this chassis 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 char-

acteristics are identified in this manual and its supple-

ments, electrical components having such features are

identified by designated symbol on the “PART LIST”.

Before replacing any of these components, read the

“PARTLIST” in this manual carefully.

The use of substitute replacement part which do not have

the same safety characteristics as specified in the “PART

LIST” may created X-RAY RADIATION.

14 inch 20 inch 21 inch 21" (FLAT)

(CPT/1489DY)

(OHPT/2050DY)

(CPT) (LGPD/OEC)

S1 -----

S2 -----Screen Adjust

S3 -----

S4 -----

+00080 +00080 +00125 +00125 +00115 FIXED, Maximum Beam Current Limit

+00015 +00015 +00015 +00015 +00015 FIXED, Average Beam Current

ON ON ON ON ON FIXED

+00098 +00098 +00094 +00070 +00074

+03940 +03940 +03920 +03920 +03900

+00088 +00088 +00097 +00115 +00148

+01520 +01520 +01520 +01520 +01520

-00122 Don't Care (For Large CRT)

+00016 +00000 +00000 +00000 +00000

+00011 -00006 -00018 -00028 -00029

+00120

-00517

+00020

+00121

+00046 +00046 +00046 +00041 +00041

+00028 +00028 +00028 +00028 +00028 FIXED

+00130

+00003

+00170 +00160 +00160 +00180 +00180

+00120 +00130 +00130 +00130 +00130

S9 +00120 +00130 +00130 +00130 +00130 For Sub-Brightness

+00032 +00032

+00060 +00060

+00032 +00032

+00048 +00048

+00008 +00008

OFF

+00020

OFF

32 don't care

400 420 420 420 430 For Screen adjusting

133V 133V 123V 123V

PICTURE TEST

Heat-Run

SCREEN

SOUND TEST

P G PEAK +00130

R-Drive

G-Drive

G-Bias

R-Bias

LARGE

DIGI EYE

TEXT SEL

B-Drive

B-Bias

BRM

+00048

SCREEN IBRM

VID FRAME

HOTEL VOL

HOTEL MODE

CONTRAST

V-LINEARITY

S-CORRECT

CORNER

EW-PRAPEZ

H-BOW

H-PARALL

Don't Care

ITEM

V-SIZE

H-SIZE

PARABOLA

BCL GAIN

WHITE PEAK

H-CENTER

V-CENTER

BCL THR

Don't Care

P H POS

S7 +00130

P V POS

P B PEAK

+00003P-CONTRAST

P-BRIGHT

P R PEAK

REMARK

SVC KEY

BARE

DATA

FIXED

Adjust for

Geometry

Don't Care (For Large CRT)

Don't Care

+00032

+00060

OFF

NOR COLOR

NOR SHARPNESS

+00008CORING

NOR BRIGHT

NOR CONTRAST

Don't Care

OFF

+00020

OFF

+00130

+00003

+00032

Main B +

S11

SVC

PIP ON

TELETEXT ON

S10

4. ALIGNMENT INSTRUCTIONS

-5-

ALIGNMENT INSTRUCTIONS

SVC KEY EXPLAIN

(S5) BCL THD : MAX BEAM CURRENT ADJUST,DIFFERENT DATA FOR INCH.

BCL GAIN : AVERAGE BEAM ADJUST.

(S6) GEOMETRY : PAL (50Hz) adjust.

AV NTSC is auto correction.

---> H-CENTER(-1),V-SIZE(0),V-CENTER(+600),V-LINEARITY(-6)

S-CORRECTION(0),H-PALLEL(0)

(S10) NORMAL : PICTURE NORMAL data setting.

(SLEEP) : TXT CHECK ON LINE

(SIZE) : GAME FUNCTION CHECK ON LINE

(S11) OPTION

- HOTEL VOLUME : HOTEL MODE MAX VOL DATA SETTING

- HOTEL MODE OFF : ON--> VOL MAX SET& INSTALL DONT OPERATING

* Software option for Function Change

PIP (ON) - ON : With PIP Models (DTC-xxxxME seiese)

- OFF : Without PIP Models (DTC-xxxxMT seriese)

Digital EYE (ON) - ON : Enable the Digital Sensor (for all Model)

- OFF : Disable the Digital Sensor

LARGE (OFF) - ON : For 29 inch Models CM-907

- OFF : For 14~21 inch Models CM-907S

LATIN : English,French,Swedish,Czech,German,Spanish,Italian,Estonian

EAST: English,Slovakian,Hungarian,Serbian,Albanian,Polish,Turkian,Rumanian

RUSSIA : English,Russian,Bulgaian,Ukrainian,Serbian,Montenegro

TEXT sel. (OFF) PERSIAN : English,Farsi

ARAB : English,Arabic

OFF : Teletext Language depends on OSD Language selection

* Note : If OSD language & text selec. is different then Teletext depends on Text selec.

2. Heat-Run

- Press the “S1”button of Service Remote controller for ‘HEAT-RUN’

(The CRT must be heated up at least 30min. before adjusting.)

- Press the “S1”button again to release ‘HEAT-RUN’mode.

3. Screen (G2) Alignment

3-1. Screen Alignment will be performed after sufficient Heat-Run of Set.

3-2. Please check the right EEPROM DATA

- Press S11 and ‘MENU’button in sequence,

then the Service Main Menu will be appeared.

- Please check the right SCR BRM data in the SVC Main Menu.

-6-

ALIGNMENT INSTRUCTIONS

- If you decrease the SCR BRM value,

the adjusted Screen Voltage will be increase.

- Recommended SCR BRM Value : 420 20 (It will be changed for some particular CRT)

3-3. Press the “S2”button without any signal,

then the Screen OSD bar is appeared with Blue-Back screen.

3-4. Preparatory Focus (G1) Alignmet

- You must try to Focus Alignment roughly for exact SCREEN alignmet.

3-5. Adjust the Screen Volume of FBT in order that

the ‘RED’OSD indicating Bar change to ‘BLACK’

(the numeric indicator must be 28~36)

3-6. Press the “S2”button again to release SCREEN Adjust mode.

FACTORY

+ 00016 G2-SCREEN

(Before Screen Adjustment)

FACTORY

+ 00032 G2-SCREEN

(After Screen Adjustment)

-7-

ALIGNMENT INSTRUCTIONS

4.The adjustment of FOCUS

4-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B).

4-2. Adjust the picture to best distinct picture of 350 Line by revolve Focus Volume.

5.The adjustment of WHITE BALANCE

5-1. NITSUKI Setting : Set Nitsuki to the ‘Auto Mode’, Reference to the ‘B’, and System to the ‘PAL’.

5-2. Setting the Normal Stats

5-2-1. Adjust Picture to Normal mode.

5-2-2. Adjust the Gain of Nitsuki to suitability by manual when condition is Normal.

- Adjust the standard illumination take within limit bright of Nitsuki and luminosity

of SET into acount.

- Exhortative Standard illumination, : High 70Cd/m2, LOW BEAM : about 15Cd/m2

5-2-3. Press the [S8]key of SVC remocon to adjustment of Whit Balance.

X=0.288, Y=0.301

5-2-4. Memorize in Nitsuki after Adjustment of White Balance.

5-3. Adjustment of White Balance

5-3-1.Receive Nitsuki signal.

5-3-2.Adjust Picture to Normal mode.

5-3-3.The Adjustment of High Beam : Adjust R-DRIVE and G-DRIVE to R,G,B BAR come to center.

5-3-4.The Adjustment of Low Beam : Adjust R-BIAS and G-BIAS to R,G,B BAR come to center.

5-3-5.Repeat 5-3-3 and 5-3-4 to R,G,B BAR come to within center 1.

6.The adjustment of GEOMETRY

6-1. Press the [S-6]key on the SVC remocon to call up the Geometry mode.

And then, Geometry OSD will be displayed.

6-1-1. All adjustment is base on PAL(50Hz),

but it can be base on NTSC(60Hz) in case of need.

6-2. The adjustment of VERTICAL CENTER

6-2-1.Receive PAL RETMA pattern(signal of company:PAL-B 2CH).

6-2-2.Press the PR up/down Keys( ) to select V CENTER.

Adjust with Vol Up/Down ( ) keys so that the center mark of the CRT may be located on

the horizontal line in the middle of the pattern. In case of no center mark, adjust with

Vol Up/Down ( ) keys to obtain a vertically symmetrical pattern.

6-3. The adjustment of VERTICAL SIZE

6-3-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH).

6-3-2. Press the PR up/down Keys ( ) to select V-SIZE.

Adjust with Vol Up/Down ( ) keys so that the upper and the lower of RETMA

pattern may be located at the boundaries of the screen.

6-4. The adjustment of HORIZONTAL CENTER

6-4-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH).

6-4-2. Press the PR up/down Keys ( ) to select V-SIZE.

Referring to the both side scales, adjust with Vol Up/Down ( ) keys

so that RETMA pattern may be symmetrical.

6-5. The adjustment of Vertical Linearity

6-5-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5CH).

6-5-2. Fix adjustment of Vertical Linearity after EEPROM presetting,

but it can be adjusted in case of need.

6-5-3. Press the PR up/down Keys ( ) to select V LINEAR.

Adjust Vertical Linearity with Vol Up/Down ( ) keys.

6-6. The adjustment of VERTICAL S-Correction

6-6-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5CH).

6-6-2. Fix adjustment of Vertical S-Correction after EEPROM DATA presetting,

but it can be adjusted in case of need.

6-6-3. Press the PR up/down Keys ( ) to select S CORRECT.

Adjust S-Corrction with Vol Up/Down ( ) keys.

-8-

ALIGNMENT INSTRUCTIONS

-9-

ALIGNMENT INSTRUCTIONS

7. THE ADJUSTMENT OF SUB-PICTURE (SUB-BRIGHT,SUB-CONTRAST)

7-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B)

7-2. Press the [S9] KEY of SVC Remocon, BRM OSD wil be displayed.

7-3. The adjustment of SUB-BRIGHT

7-3-1. Press the PR up/down Keys ( ) to select SUB-BRIGHT in SUB-PICTURE MENU.

Adjust SUB-BRIGHT with Vol Up/Down ( ) keys.

7-3-2. Adjust With BRM, When SUB-BRIGHT is lacking in margin of adjustment.

7-3-3. Standard of adjustment : Adjust till instant of 1, 2th cordon disappear in

RETMA CONTRAST CHART(signal of company).

7-3-4. When Sub-Picture mode was exited after SUB’s adjustment, Normal vlaue is

brighter(about 18%) than adjustment-point(about 10%) of adjustment-mode because

BRIGHT is set to rise 2~3 step.

8. THE ADJUSTMENT OF PIP

8-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH) and Color Bar.

8-2. Press the [S7] KEY of SVC Remocon, PIP-Adjustment OSD wil be displayed.

8-3. Fix adjustment of PIP after EEPROM DATA presetting,

but it can be adjusted in case of need.

8-4. Adjust PIP after GEOMETRY, WHITE BALANCE and SUB-BRIGHT are adjusted.

8-5. List of adjustment

PIP H POSITON : Adjustment of H-position Sub-Picture,

(Reference : Presetting Value of EEPROM = 45)

PIP V POSITON : Adjustment of V-position of Sub-Picture,

(Reference : Presetting Value of EEPROM = 30)

PIP R/G/B Peak : Adjustment of Gain of PIP IC R,G,B Output

(Reference : Presetting Value of EEPROM = 130)

P CONTRAST : Adjustment of AC Gain(Contrast) of PIP IC RGB Output

(Reference : Presetting Value of EEPROM = 04)

P BRIGHT : Adjustment of DC Level(SUB BRIGHT) of PIP IC RGB Output

(Reference : Presetting Value of EEPROM = 00)

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