Daewoo DTD-29U8ME User manual

Service Manual
Colour Television
CHASSIS : CM-905F
Model :DTD-29U8ME
29U8MT
29U8MP
29U8MZ
S/M No. : TCM905FEF0
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr NOVEMBER.2001
MODEL OIPTION LIST
MODEL TEXT PIP
ME O O
MT O X
MP X O
MZ X X

- 1 -
TABLE OF CONTENTS
SPECIFICATIONS .............................................................................................................. 2
SAFETY INSTRUCTION .................................................................................................... 3
CIRCUIT BLOCK DIAGRAM ............................................................................................. 4
ALIGNMENT INSTRUCTIONS .......................................................................................... 5
CM-905FTYPICAL SERVICE DATA.................................................................................. 8
SCHEMATIC DIAGRAM..................................................................................................... 11
PRINTED CIRCUIT BOARD .............................................................................................. 12
MECHANICAL EXPLODED VIEW AND PARTS LIST ...................................................... 18
ELECTRICAL PARTS LIST ............................................................................................... 19
CM-905FEACH MODEL PARTS LIST .............................................................................. 28
APPENDIX (“Appendix is provided only by internet [http://svc.dwe.co.kr]”)
IC DESCRIPTION .............................................................................................................. 1
TROUBLE SHOOTING CHARTS ...................................................................................... 14

- 2 -
Items Model DTD- 29U8ME
29U8MT
29U8MP
29U8MZ
TV Standards PAL-SECAM-B/G,D/K,I,NTSC-M,NTSC-4.43(AV)
Mains Voltage AC 110~250V, 50/60Hz
Power Consumption 130Watts
Sound Ouput 7Watts + 7Watts Over (80% MOD.at 1KHz THD.10%)
Speaker 10W 8 Ohm (2 pcs)
Antenna 75 Ohm Unbalanced. (DIN Standard)
Tuning System FS Tuning System
Memory Channel 100 Channels
Remocon Control R-44C07
Reception Channel VHF - BAND1 : CH2 - CH4
BAND2 : CH5 - CH12
CABLE BAND : S1’ - S3, S1 - S20
HYPER BAND : S21 - S41
UHF-BAND 4,5 : CH21 - CH69
Remark OSD ( GUI Format )
TELETEXT ( Top & Flop Teletext )
PIP ( AV PIP, Swap, Size, Position )
Digital Eye
SPECIFICATIONS
CAUTION

- 3 -
SAFETY INSTRUCTION
CAUTION
NOTE
BEFORE SERVICING THIS CHASSIS READ THE “X-RAY RADIATION PRECAUTIONS”,
“SAFETY PRECAUTIONS” AND “PRODUCT SAFETY NOTICE” BELOW.
X-RAY RADIATION PRECAUTIONS
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
29kV(29”) at max beam current.The high voltage must
not, under any circumstances, exceed 30.5kV(29”).
Each time a receiver requires servicing, the high volt-
age should be checked. It is recommended the reading
SAFETY PRECAUTIONS
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.
PRODUCT SAFETY
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 “PART
LIST” 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.
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”.
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 110-250 volts,
50/60Hz. NEVER connect to DC supply or any other
power or frequency.

- 4 -
CIRCUIT BLOCK DIAGRAM

- 5 -
ALIGNMENT INSTRUCTIONS
CAUTION
1. AGC ADJUSTMENT
1) Pattern : PAL B/G 10CH Color BAR (RF Level = 60 dB)
2) Connect the Pattern Generator RF Output to Tuner RF Input.
3) Press the S10 Key of Service Remocon to enter the “AGC MODE”.
4) Execute the “AUTO AGC” using the Vol-Up Key.
2. SCREEN ADJUSTMENT
1) Pattern : PAL B/G Retma
2) Press the NORMAL Key to set the “NORMAL 1” mode.
3) Press the S2 Key of Service Remocon.
4) Adjust the SCREEN VOLUME on FBT so that the horizontal line reach the cut-off point.
3. FOCUS ADJUSTMENT
1) Pattern : PAL B/G Retma
2) Adjust the FOCUS VOLUME on FBT to obtain clear resolution.
4. WHITE BALANCE ADJUSTMENT
1) Press the NORMAL Key to set the “NORMAL 1” mode.
2) Press the S8 Key of Service Remocon to enter the “WHITE BALANCE” mode.
3) Adjust the each color ( R,G,B ) which appears abnormally on the screen.
5. GEOMETRIC ADJUSTMENT
1) Press the NORMAL Key to set the “NORMAL 1” mode.
2) Press the S6 Key of Service Remocon to enter the “GEOMETRIC” mode.
5-1.VERTICAL CENTER ADJUSTMENT
1) Pattern : PAL B/G Retma
2) Choose the “V-CENTER” using the Pr-Up/Down Keys.
3) Adjust the horizontal line of picture to coincide with the mechanical center marks of the CRT using the
Vol-Up/Down Keys.
*If the pattern is smaller than the screen, adjust the V-size to fit.
5-2.VERTICAL SIZE ADJUSTMENT
1) Pattern : PAL B/G Retma
2) Choose the “V-SIZE” using the Pr-Up/Down Keys.
3) Adjust the vertical size of the picture using the Vol-Up/Down Keys.

- 6 -
5-3. HORIZONTAL CENTER ADJUSTMENT
1) Pattern : PAL B/G Retma
2) Choose the “H-CENTER” using the Pr-Up/Down Keys.
3) Adjust the vertical line of picture to coincide with the mechanical center marks of the CRT using the
Vol-Up/Down Keys.
5-4. HORIZONTAL SIZE ADJUSTMENT
1) Pattern : PAL B/G Retma
2) Choose the “H-SIZE” using the Pr-Up/Down Keys.
3) Set each side over scan to be 10% using the Vol-up/Down Keys.
5-5. PINCUSHION ADJUSTMENT
1) Pattern : PAL B/G Crosshatch
2) Choose the “PARABOLA” using the Pr-Up/Down Keys.
Adjust parabola width to fit on screen.
3)Choose the “CORNER” using the Pr-Up/Down Keys.
Adjust coner parabola to fit on screen.
4) Choose the “TRAPEZIUM” using the Pr-Up/Down Keys,
Adjust trapezium to fit on screen.
5-6. S-CORRECTION ADJUSTMENT
1) Pattern : PAL B/G Crosshatch
2) Choose the “S-CORRECTION” using the Pr-Up/Down Keys.
3) Adjust each distance of horizontal line to be the same using the Vol-Up/Down Keys.
5-7. SUB-BRIGHTNESS ADJUSTMENT
1) Pattern : PAL B/G Retma
2) Press the NORMAL Keys to set the “NORMAL 1” mode.
3) Adjust the Brightness so that the second line of top appears, as follow.
ALIGNMENT INSTRUCTIONS

- 7 -
ALIGNMENT INSTRUCTIONS
6. REMOCON
6-1. SERVICE REMOCON 6-2. USER REMOCON
6-3. SERVICE REMOCON
1) Enter SERVICE MODE : Press keys of User Remocon, as follows.
Ch91, Sharpness 0, Skip(red), Move(green), Menu.
2) Choice SERVICE MENU : Pr-Up/Down
3) Enter SERVICE SUB MENU :Vol-Up/Down
4) Adjust SERVICE MENU :Vol-Up/Down
S1 S2 S3
S4 S5 S6
S7 S8 S9
S11
RECALL
S10 S12
MUTE POWER
TV/CATV
ADD/ERASE
TV/VIDEO
SOUND MODE
SURROUND
NOISE CLEAR
CH
VOLVOL
CH
MENU
PIP M/S
CH VOL
V-
POSITION
POSITION
TV/VIDEO PAUSE/
STILL
SIZE SLEEP
1
3456
7
R-34SVC
890
2

- 8 -
CM-905F TYPICAL SERVICE DATA
CAUTION
CM-905F SVC KEY & FUNCTION DESCRIPTION
EY N NAME RFUNCTION
PRESS THE S1 ONE TINE ----> PRESS THE S1 ANOTHER TIME
(HEATRUN MODE) (NORMAL OPRATION)
*FBT SCREEN ADJUSTMENT
PRESS THE S2 ON TIME ----> PRESS THE S2 ANOTHER TIME
(HORIZONTAL KINE) (NORMAL OPRATION)
*SOUND TEST
PRESS THE S3 KEY IS TOGGLE
VOLUME 00 ----> VOLUME 32 ----> VOLUME 63--->
BALANS LEFT ----> BALANS RIGHT ----> BALANS 00 ----> RELEASE
*PICTURE TEST
PRESS THE S4 KEY IS TOGGLE
CONTRAST 00 ----> CONTRASR 32 ----> CONTRAST 63 ---->
RRIGHT 00 ----> BRIGHT 32 ----> BRIGHT 63 ---->
COLOR 00 ----> COLOR 32 ----> COLOR 63 ----> RELEASE
*ADJUST NORMAL1 DATA INITIAL DATA
CONTRAST 63 63
RRIGHT 32 32
COLOR 32 32
SHARPNESS 32 32
*ADJUST GEOMETRY DATA
PAL MODE NTSC MODE INITIAL DATA(50Hz)
V-CENTER 05 03 04
V-SIZE 39 39 27
H-CENTER 08 12 14
H-SIZE 36 36 58
S6 PARABORA 32 32 27
TRAPEZIUM 16 16 15
CORNER 06 06 05
H-EHT 03 03 03
S-CORRECTION 09 09 07
V-LINEARITY 08 08 09
V-EHT 03 03 03
* ADJUST PIP DATA
R 180 128
G 180 128
B 180 128
S1 HEATRUN MODE
S2 SCREEN
ADJUSTMENT
S3 SOUND TEST
S4 PICTURE TEST
S7
PIP INITIAL DATA
Line Production
Line Production
ON/OFF
ON/OFF
NORMAL1
S5
NAME

- 9 -
CM-905FSVC KEY & FUNCTION DESCRIPTION
WHITE BALANCE *ADJUST WHITE BALANCE DATA
RB R LOW BEAM ADJUSTMENT 128
GB G LOW BEAM ADJUSTMENT 0
BB B LOW BEAM ADJUSTMENT 0
GG G HIGH BEAM ADJUSTMENT 64
BG B HIGH BEAM ADJUSTMENT 32
SUB-BRIGHT ADJUST BRIGHTNESS DATA 15
SUB-CONTRAST ADJUST SUB CONTRAST DATA 15
*MAIN RF AGC ADJUSTMENT KEY
AGC TUNER AGC VOLTAGE 3.5Vdc
AUTO-AGC
DATA 32
*OPTION MODE ADJUSTMENT KEY INITIAL DATA
TEXT ARABIC/CYRILLIC/IRANIAN/EAST-LATIN//WEST-LATIN ARABIC
POWER-ON-START ON/OFF ON
DIGITAL EYE ON/OFF ON
*OUT DATA
PICTURE NORMAL 1
BLUE SCREEN ON
CLOCK
ON TIMER
ON TIMER
ON/OFF
ON PR 1
OFF TIMER
OFF TIMER
ON/OFF
LANGUAGE ENGLISH
COLOR SYSTEM PAL
SOUND SYSTEM BG
SOUND MODE MEMORY
NAME(EACH PR) ----
TV/AV1/AV2 TV
TV/TEXT TV
LAST PR 1
VOLUME 20
PICTURE SIZE NORMAL (4:3)
S8
S9
S10
S11
S12 OFF
OFF
CM-905F TYPICAL SERVICE DATA

- 10 -
CM-905 SVC KEY & FUNCTION DESCRIPTION
CHILD LOCK OFF
CH LOCK OFF
S12
CM-905S/SF TYPICAL SERVICE DATA
SUB MENU
NO NAME RFUNCTION IITIAL DATA
1 PIP ON / OFF (PIP) PIP ON/OFF display a sub-picture OFF
2 SWAP (PIP) M/S The main picture and sub-picture are swapped
The sub-picture will be smaller.
3 SIZE (PIP) To return to be normal size, Press this button
again.
4 TV / VIDEO (PIP) TV/VIDEO To select the input for the sub pictrue
5 POSITION (PIP) POSITION The display position of the sub-picture will changed
S2 DATA changed
RB 128 128
GB 0 0
6 SCREEN V-POSITION BB 0 0
GG 64 64
BG 64 64
Brightness 32 32
8 ZOOM SIZE Picture size changed ( 4:3 -> 16:9 -> ZOOM -> 4:3 ->)
9 TEXT SLEEP TEXT funtion ON/OFF
10 CH UP CH
11 CH DOWN CH
12 RESISTER VOL
13 RELEASE VOL
SERVICE
REMOCON
NAME
7DIGITAL EYE V-POSITION DIGITAL EYE funtion ON/OFF
USING the SERVICE MODE to Channel UP/DOWN
USING the FACTIRY KEY
PAUSE/
STILL

SCHEMATIC DIAGRAM
11

PRINTED CIRCUIT BOARD
PCB MAIN
- 12 -

- 13 -
PRINTED CIRCUIT BOARD

- 14 -
PRINTED CIRCUIT BOARD

- 15 -
SCHEMATIC DIAGRAM
DAEWOO ELEC. CO., LTD.
CM-905/CM-905F PIP BOARD
2000,11,13
REVISION; PIP 1
S/N;4859811724

- 16 -
PRINTED CIRCUIT BOARD

- 17 -
PRINTED CIRCUIT BOARD

ELECTRICAL PARTS LIST
- 19 -
10 6520010100 STAPLE PIN AUTO W65
10 2193102005 SOLDER BAR SN:PB=63:47 S63S-1320
10 2TM18006BE TAPE MASKING 6.2X500
10 2TM14006LB TAPE MASKING 3M #232 6.0X2000M
10 2TM14006LB TAPE MASKING 3M #232 6.0X2000M
20 2TM10006LB TAPE MASKING 3M #232-MAP-C 6.2X2000M
20 2TM10006LB TAPE MASKING 3M #232-MAP-C 6.2X2000M
30 2291050616 FLUX SOLDER JS-64T3
40 2291050301 FLUX SOLVENT IM-1000
00001 DPBS606GU- DIODE BRIDGE PBS606G
00001 DFMLG16S-- DIODE FML-G16S
00001 1TDA7297-- IC AUDIO AMP TDA7297
00001 1STRF6656- IC POWER STR-F6656
00001 1KA7805--- IC REGULATOR KA7805
00001 1K1A7809P1 IC REGULATOR K1A7809API
00001 TKTC2026Y- TR KTC2026Y
00001 T2SD2578-- TR 2SD2578
00001 TKTA1659AY TR KTA1659AY
00001 TKTC4370AY TR KTC4370AY
0000A 4857018900 HEAT SINK A1050P-H24 T1.6
0000A 4857026900 HEAT SINK AL EX
0000A 4857028218 HEAT SINK AL EX BK
0000A 4857027920 HEAT SINK AL EX BK
0000A 4857026900 HEAT SINK AL EX
0000A 4857026902 HEAT SINK AL EX BK
0000A 4857027609 HEAT SINK AL EX
0000A 4857027609 HEAT SINK AL EX
0000A 4857026900 HEAT SINK AL EX
0000A 4857026900 HEAT SINK AL EX
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
0000B 7174301011 SCREW TAPPTITE TT2 RND 3X10 MFZN
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
0000B 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN
0000B 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN
00100 4850Q00810 BATTERY R6P/LN
10000 48586054K1 MANUAL INSTRUCTION DTM-2082CW
A001 4859804096 PCB MAIN 330X246 S1B
A001 4859806960 PCB UNION 246X246/1X2
A001 4859811724 PCB PIP 88X60(246X246/6) SIB
C101 CCXF1H103Z C CERA 50V F 0.01MF Z (TAPPING)
C102 CEXF1C331V C ELECTRO 16V RSS 330MF (8X11.5) TP
C103 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C104 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C105 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
C106 CEXF1H101V C ELECTRO 50V RSS 100MF (8X11.5) TP
C107 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C108 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C301 CMXM2A224J C MYLAR 100V 0.22MF J
C302 CMXM2A102J C MYLAR 100V 1000PF J (TP)
C303 CEXF1H221V C ELECTRO 50V RSS 220MF (10X16) TP
C304 CXCH1H360J C CERA 50V CH 36PF J (TAPPING)
C305 CMXM2A103J C MYLAR 100V 0.01MF J (TP)
C306 CMXM2A473J C MYLAR 100V 0.047MF J (TP)
C307 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP
C308 CEYF1E332V C ELECTRO 25V RSS 3300MF (16X31.5)
C310 CEYD1H689V C ELECTRO 50V RUB 6.8MF (16*35.5)
C312 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C401 CEXF1H101V C ELECTRO 50V RSS 100MF (8X11.5) TP
C402 CCXB2H102K C CERA 500V B 1000PF K (TAPPING)
C403 CCXB2H222K C CERA 500V B 2200PF K (TAPPING)
C404 CMYH3C752J C MYLAR 1.6KV BUP 7500PF J
C405 CMYH3C912J C MYLAR 1.6KV BUP 9100PF J
C406 CMYE2J273J C MYLAR 630V PU 0.027MF J
C407 CEXF2C339V C ELECTRO 160V RSS 3.3MF (8X16) TP
C408 CMYE2G394J C MYLAR 400V PU 0.39MF J
C409 CEXF2C101V C ELECTRO 160V RSS 100MF (16X25) TP
C411 CEXF2E100V C ELECTRO 250V RSS 10MF (10X20) TP
C412 CCXB2H221K C CERA 500V B 220PF K (TAPPING)
C413 CEXF1E102V C ELECTRO 25V RSS 1000MF (13X20) TP
C414 CCXB2H102K C CERA 500V B 1000PF K (TAPPING)
C415 CEXF1V102V C ELECTRO 35V RSS 1000MF (13X25) TP
C416 CCXB2H102K C CERA 500V B 1000PF K (TAPPING)
C417 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C419 CCXB2H102K C CERA 500V B 1000PF K (TAPPING)
C420 CEXF1H470V C ELECTRO 50V RSS 47MF (6.3X11) TP
C500 CZCH1H160J C CERA 50V CH 16PF J (AXIAL)
C501 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP
C502 CCZF1H103Z C CERA 50V F 0.01MF Z
C503 CEXF1H220V C ELECTRO 50V RSS 22MF (5X11) TP
C504 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5X11) TP
C505 CEXF1H229V C ELECTRO 50V RSS 2.2MF (5X11) TP
C506 CEXF1H228V C ELECTRO 50V RSS 0.22MF (5X11) TP
C507 CMXM2A222J C MYLAR 100V 2200PF J (TP)
C508 CXCH1H100D C CERA 50V CH 10PF D (TAPPING)
C509 CCZF1H103Z C CERA 50V F 0.01MF Z
C510 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP
C511 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z
C512 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z
C513 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z
C514 CMXL1J474J C MYLAR 63V MEU 0.47MF J
C515 CCXB1H472K C CERA 50V B 4700PF K (TAPPING)
C517 CMXM2A222J C MYLAR 100V 2200PF J (TP)
C519 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C520 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C522 CEXF1H228V C ELECTRO 50V RSS 0.22MF (5X11) TP
C523 CMXM2A822J C MYLAR 100V 8200PF J (TP)
C524 CEXF1C102V C ELECTRO 16V RSS 1000MF (10X20) TP
C525 CCZF1H103Z C CERA 50V F 0.01MF Z
C526 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C527 CCZF1H103Z C CERA 50V F 0.01MF Z
C528 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C529 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C530 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C531 CEXF1H108V C ELECTRO 50V RSS 0.1MF (5X11) TP
C532 CCZF1H103Z C CERA 50V F 0.01MF Z
C533 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C534 CMXM2A102J C MYLAR 100V 1000PF J (TP)
C535 CEXF1H228V C ELECTRO 50V RSS 0.22MF (5X11) TP
C537 CCZF1H103Z C CERA 50V F 0.01MF Z
C538 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5X11) TP
C539 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5X11) TP
C540 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z
C541 CCZF1H103Z C CERA 50V F 0.01MF Z