DAEWOO DTQ-29G1TS, DTQ-29G1TSP, DTQ-29G3TS, DTQ-29G3TSP Service Manual

TABLE OF CONTENTS

1. SPECIFICATIONS........................................................................................................................... 2

2. EXTERNAL VIEW.................................................................... ......... ................. ......... ..................... 3

3. BLOCK DIAGRAM ......................................................................................................................... 6

4. ALIGNMENT INSTRUCTION ......................................................................................................... 7

5. IC DESCRIPTION ........................................................................................................................... 15

6. CIRCUIT DESCRIPTION ................................................................................................................ 29

7. TROUBLE SHOOTING GUIDE ....................................................................................................... 32

8. ELECTRICAL PARTS LIST............................................................................................................. 40

1. SPECIFICATION S

MODEL NAME DTQ-25G1TS/TSP DTQ-29G1TS/TSP DTQ-29G3TS/TSP

TV Standard NTSC-M NTSC-M NTSC-M Main Voltage TS: 120V 60Hz

TSP:220V 50/60Hz Power Consumption 115W 125W 125W Tuning System Frequency Synthesizer Frequency Synthesizer Frequency Synthesizer Receiving Channels 181 Channels 181 Channels 181 Channels Sound Output 3W 3W 3W Speaker

Antenna Input Impedance CRT AUX. Terminal

(INPUT) AUX. Terminal

(OUTPUT) Weight 33kg 44kg 44kg Remocon Type R-35H13 R-35H13 R-35H13 Dimension (BOX)

(SE T)



7W 16



A59KTB41

Front : Video, Audio(R/L)

Rear : Video, Audio(R/L)

Front : Earphone (Stereo)

Rear : Video, Audio(R/L)

779

728



02(D) A68KTB141010 A68AEG2502



532  604mm



520  459mm

TS: 120V 60Hz TSP:220V 50/60Hz

7W 16



Front : Video, Audio(R/L) Rear : Video, Audio(R/L)

Front : Earphone (Stereo) Rear : Video, Audio(R/L)

887



692 565mm



606  500mm

807

TS: 120V 60Hz TSP:220V 50/60Hz

7W 16



Front : Video, Audio(R/L) Rear : Video, Audio(R/L)

Front : Earphone (Stereo) Rear : Video, Audio(R/L)

897



664  580mm



560  486mm

758

Special Function 2 Channel PIP Function 2 Channel PIP Function 2 Channel PIP Function

3-language OSD 3-language OSD 3-language OS D

With Caption With Caption With Caption

CH Label CH Label CH Label

Auto De mo Auto Demo Au to De mo

Stereo/SAP Stereo/SAP Stereo/SAP

2. EXTERNAL VI EW

FRONT VIEW

MODEL NAME : DTQ-29G1TS/TSP

D TQ-2 5G1TS/TSP

REAR VIEW

FRONT VIEW

MODEL NAME : DTQ-29G3TS/TSP

REAR VIEW

REMO CO N

1 PO WER

Use this button to turn your TV on or off.

2 M UT E

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

3 PIP ON/OFF

Use this button to turn PIP on/off.

4 PIP POSITION

Use this button to turn PIP display position.

5 PIP SOURCE

Use this button to select PIP source.

6 PIP SWAP

Use this button to exchange PIP source and main source.

7 PIP STILL

Use this button to still PIP source.

8 0-9

Use these buttons to change channels.

9 SLEEP

Use this button to program the TV to turn off after a certain time.

10 RE CA LL

- Use this button to display the channel number, channel label and stereo status

- Use this button repeatedly to select the main menu or sub menu.

11 TV/VIDEO

Use this button to select main picture source.

12 FAV O R ITE CH

Use this button to scan through your favorite channels only skipping other channels you do not normally watch.

13 CA PTION

Use this button to select a caption mode.

14 M TS

Use this button to select one mode of Mono, Stereo or SAP

VOL





15 CH

Use this button to change main channel/PIP channel or select items in the menu system.



Use this buttons to change TV’s sound volum e, to activate selections in the menu system , or to change audio and video setting.

17 MENU

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

3. BLOCK DIAGRAM

4. ALIG NMENT INSTRUC TION



Service Mode A djustment

1. How to enter into Service M ode



Direct the remote control to the reception window of TV.



Push buttons of remote control in sequence.





MUTE  RECALL  MUTE

Then, the screen will appear as follows.

S2 SCRN S5 IFC S6 GEO S8 W/B S9 DP S10 MTS S12 FACT S7 PIP





Select



Adjust

W hen you select a item, its turns into the red.

2. How to mem orize the adjusted settings in service m ode ; Must press RECA LL button the state which the screen is displaying each of service m enus after all adjustments are completed each of all service menu.



PCB ADJUSTMENT

1. A PC D ET & P LL Tuning adjustment.(S 5)



Receive the signal of RF 100% Full color bar 85dB.



Select the S5 of service m ode to display items, then press theCH.



Select A U TO AD J, execute Auto adj.S tart.



Confirm the OSD of Auto adj.OK.



Press the REC A LL key of service rem o te control to store.

IF CONTROL # AUTO ADJ START

# RF.AGC .D 32

APC.DET 31 AGC.DET 1 PLL.TUN 69 AGC.DEF 0 VIDEO L 4 FM.LEV 16



Move



Adjust

RECALL : SET

2. STEREO /SAP AUTO ADJU STM ENT(S11)



Receive theZenith MTS signal of 1kHz CH.



Select the S10 of service mode to display items, then press theCH.



Select Auto off, then execute Auto on.



Press the RE C ALL key of remote control to store.



Select L only or R only channel, then confirm stereo separation.

MTS RE AD ALR1:10h ALR2:89h INPUT LEVEL 8

# AUTO O FF

SC 0 A1X 16

VR 94 TZCM 1 A2X 9

VL 94 LM U 0 AT 0 GMU 0 EF 0 TC 0 CCD 1 STS 1





ASSEMBLY ADJUSTMENT

Move



Adjust

RECALL : SET

1. SCREEN ADJUSTMENT(S2)



Select the S2 of service mode to display items, then press the VOL.



Adjust the Screen Volum e of FBT in order to horizontal line of screen disappear.



Press VOLof remote control.

2. FOCUS ADJUSTMENT(FBT FOCUS VR)



Receive the Retma pattern.



Adjust the Focus Volume of FBT to obtain the clearest picture.

3. Geom etric Adjustment(S6)



Receive the Retma Pattern.



Select the S6 of service mode to display items, then press the CH.



Horizontal C enter Adjust.



Select H _Phase, then adjust step so that the left & right width of picture be same.



Vertical Center Adjust.



Select Ver_DC, then adjust V.DC so that the horizontal line of Retma Patterns center may meet with

the mechanical center of C R T.



Ve r t ic a l Size A djust.



Select V_Size, then adjust V_Size so that the center of circumference of big circle may m eet with the

upper and lower sides of the screen.



Press the REC A LL key of remote control to store.

GEOMETRY

# H_P HAS E 4

# V.DC 32 # V.SIZE 32 N O SD POWER OFF Y ES





Horizontal S ize Adjust.



Adjust RV 401 so that 2-2 point of the horizontal screen may meet with the R/L side.



Side Pincusion Correction Adjust.



Receive the Cross Hatch Pattern.



Adjust RV 402 so that the vertical line is perpendicular.

1 1

Move



Adjust

RECALL : SET

4. RF AGC ADJUSTMENT(S5)



Receive the signal of RF 100% Full color bar 60dB.



Connect Scope to P102.



Select the S5 of service mode to display items, then press the CH.



Select RF A G C .D, then adjust the maximum voltage of scope to alternate 1V.



Press the RE CALL key to store.

IF CONTRO L # AUTO A DJ START

# R F.A G C.D 3 2

APC.DET 31 AGC.DE T 1 PLL.TUN 69 AGC.DEF 0 VIDEOL 4 FM.LEV 16



Move



Adjust

RECALL : SET

5. W HITE BALANCE ADJUSTMENT(S8) * Execute H EAT RUN of the TV SET over 30 minutes * Connect the signal output of WH ITE BALAN C E TE ST ER (Nitsuki 2840) to the A N TEN NA (or VIDEO IN) input of the TV SET. Stick and fix the SENSO R to the center position of CRT.

* Select the S8 of service mode to display item s, then press the



CH. * Adjust the R,G,B BIAS and R,B DR IVE value in order that R ,G,B of the HIGH B E AM and LO W BE AM m ay m eet with the CENT ER LED of each measuring instrument. * At this tim e, the m em orized coordinates of the WH ITE BALA N CE TE ST ER , unless otherwise specified, use following coordinates and color tem perature (3~5ftL 270 X 270)

M AIN W/B R-DRIVE 64 B-DRIVE 64

R-BIAS 64 G-BIAS 64 B-BIAS 64



Move



Adjust

RECALL : SET

6. D.P ADJUSTMENT.



Receive the Retma Pattern.



Select the S9 of service m ode to display items, then press theCH.



Select of Brightness, then adjust Sub Bright level in order that the gradation pattern m ay serve 18%



Press the RE CALL key to store.

D.P

# Brightness 18

Tint 32 Color 30



Move



Adjust

RECALL : SET

7. PIP DATA ADJUST MENT.



Select the S7 of service mode to display items, then press the CH.



Adjust PIP sub data.(color : 50, Tint : 55, Cont : 40, Brig : 20)



Press the RE CALL key to store.

PIP Color 55 12h<6:0>

Tint 50 01h<5:0> CONT 45 06h<6:0> Brig 15 0Fh<7:3> y-dl 4 04h<3:0> H-Pos 103 0Ch<7:0> V-Pos 152 0Ah<7:0>



MOVE



Adjust

RECALL:SET

8. FORWARDING MODE(S12)



Select the S7 of service mode to display items, then press the CH.

MEMORY



INIT IA L DA T A

1. LA76070A Bit Map.

SUB

M S B D A T A LSB

Default Remark

ADD.

00h T_Enable Vid_Mute Sync_Kill 08h 01h AFC G ain H_phase 04h 02h IF AGC SW AFT DEF RF_AGC_Delay 20h 03h VIDEO SW PLL TUNING 40h 04h Aud_Mute APC DE T AD JUS T 20h 05h VC D MO DE Ver_DC 20h 06h Ver_kill Col_kill Ver_Size 20h 07h R_Bias 40h 08h G_Bias 40h

DA0 DA1 DA2 DA3 DA4 DA5 DA 6 DA7

09h B_BIAS 40h 0Ah BLK_DEF R_Drive 40h

0Bh Drv_Test B_Drive 40h 0Ch C_Diff Bright 64h 0Dh Cot_Test C ontrast 64h 0Eh Trap D_SW A Fresh Black ST Sharpness 38h 0Fh Tin_Test Tint 30h

10h Col_Test Color 3fh

11h V-test 00h

12h VIDEO LEVEL FM LEVEL 90h

13h N/I SW AUD IO SW VOLUM E 00h

2. TD A9852 B it Map

MSB LS B

FUNCTION Register

Initia l D a ta

D7 D6 D5 D4 D3 D2 D1 D0

Volume R VR 0 VR6 VR5 VR4 VR3 VR2 VR1 VR0 0100 0111 Volume L VL 0 VL6 VL5 VL4 VL3 V L2 VL1 VL0 0100 0111 Control 1 CON1 GMU AVLON LOFF CCD 0 SC2 SC1 SC0 1101 0000 Control 2 CON2 SAP Stereo TZCM 1 LUM EF2 EF1 EF0 0101 1000 Control 3 CON3 0 0 0 0 L3 L2 L1 L0 0000 1000 Alignm ent 1 ALR 1 0 0 0 A14 A13 A12 A11 A10 0001 0000 Alignm ent 2 ALR 2 STS 0 0 A24 A23 A22 A21 A20 1000 1001 Alignm ent 3 ALR 3 ADJ AT1 AT2 0 1 TC2 TC1 TC 0 0000 1011

3. M65617S P SVC MO D E INITIAL DATA.

PIP Color 55 12h<6:0>

Tint 50 01h<5:0> CONT 45 06h<6:0> Brig 15 0Fh<7:3> y-d1 4 04h<3:0> H-Pos 103 0Ch<7:0> V-Pos 152 0Ah<7:0>



MOVE



Adjust

RECALL:SET

5. IC DESCRIPTION



I701

- LC864720/32A (M-com)

1. B LO C K D IA G R A M

2. PIN DESCRIPTIO N

PIN NAME FUNCTION REMARK

I.D In

- C CTV I.D In p u t Terminal

- No rma l : H igh

CMOS Pu sh-Pu ll

N.C

(P11) MAIN CLOCK

OU TPUT(P12) MAIN DATA

IN/OUT(P13) TUNER CLOCK

OU TPUT(P14) TUNER DATA

OU TPUT(P15) MAIN TUNER

ENABLE OUT(P16) SUB TUNER

ENABLE OU T(P16) Vss

XT1

CMOS

Pu sh- Pu ll

- LA76070/TDA9852/M6561 7S P /EEP R O M C L O CK Output Terminal CM O S Push-Pull

- LA76070/TDA9852/M6561 7S P /EEP R O M D ATA In-Out Term inal CMOS Push-Pull

- PLL IC(TD635 9P) C LK O u tput Terminal CM O S Push-Pull

- PLL IC(TD635 9P) D ATA Output Term inal CM O S Push-Pull

- M AIN TU NER E NA BLE CMOS Push-Pull

- S U B T UN ER ENAB L E CMOS Push-Pull

- G N D

- 32.768 KHz X-TAL

XT2

Vdd

M AIN A FT In pu t

(P90/AN 0) SUB AFT Input

(P91/AN 1) SET KEY IN

(P92/AN 2) /RESET

FILT O UTPU T

CVIN

- O SD os cillator

- +5 V (10%)

- M AIN IC(L A7607 0A) Ou tp ut D C 0 ~ V dd

Center : 2.5V

- SUB TUNER output DC 0 ~ Vd d

Center : 2.5V

- POWER, CH UP/DOWN, VOL UP/DOWN, MENU

- See Sche m atic Diagram.

- S Y ST E M Reset(Ha rd war e R e s et) In p u t Termin a l

- ACTIVE Low

- Filter terminal for PLL

- Video sign al input terminal for CAPTI ON 1V pp In

A/D CONV. 5Bit

PIN NAME FUNCTION REMARK

/V-Sync

- S y n c.sig nal for Ve r tic al po sition.

- 0 ~ 5V p ulse

- D e tect inpu t- A c tive L ow

/H-Sync

OSD Ys

PWM 0

PWM 1

PWM 2

M AIN S W O UT

(PWM 3)

SW V.M UT E OUT

(PWM 4)

- S y n c . s igna l fo r Ho r_ pos itio n

- 0 ~ 5 V puls e

- D e tect inpu t - Act ive Low

- D e tect inpu t - Activ e Hig h

- D o t pattern o f OS D O utpu t

- N.C

- M AIN TV /V IDE O SW ITC HIN G



- T V MODE : High

- VIDEO M ODE : Low

- DEFAULT™œ TV M O D E

- M AIN /SU B SWITC HING : MAIN V.M UT E OUT Termina l

- No rma l : H ig h

When V.MU T E : L o w



PWM Ma x 12 8(7B it) Output



PWM M in 0 Output

PW M Max 128(7B it) Output



PW M Min 0 Output

Open D rain Output

SUB SW OUT

(PWM 5)

P 7 0 /INT 0

Sub S D Input

P 7 1 /INT 1 Main SD Input

Sync.signal in (TIM0)

R e mote Co n tro l

Input (INT3)

O p tio n A IN

(P00)

- SUB(PiP) TV/VIDEO SWITCHING



- T V MODE : High

- VIDEO M ODE : Low

- DEFAULT VIDEO MO DE

- X -Ra y IN

- Sub Tuner Level Sync signal input - High : normal

- Lo w : NO Sig n al

- Main Tuner Level Sync signal input - High :normal

- Low :N O Sign al

- REM O TE CO N TROL S ignal input Terminal

- REMOTE CONTROL TRANSMITTER : M50560-388GP OR M50560-001

CU STOM MO DE 1 4h

- H IGH : PIP F UNCTIO N

- LOW : N O P IP

PWM Ma x 12 8(7B it) Output



PWM M in 0 Output

Open D rain Output

CMOS Pu sh Pu ll

PIN NAME FUNCTION REMARK

O p tio n B IN (P01)

- H IGH : AV PIP FU NC TIO N

- LOW : 2-TUNER PIP FUNCTION

CMOS Pu sh Pu ll

39 40 41 42

O p tio n C IN (P02)

O p tio n D IN P03

P04 P05 P06 Power Control

Output (P07)

- H IGH : AV VID EO M OD E

- LOW : NO VIDEO MODE

- H IGH : MON O

- LOW : STERE O/SAP FU NC TION

- N.C

- A c tiv e High

- Low s tate a t i n itia l c o ndition( RE SET)

- Toggle Low/High when P ow er key input is detected.



Low High

- Automatically turns to Low w he n Sleep Time r (count dow n) counts "0"

- A u tom a ti c a lly turns to L o w w h en th e O FF T IMER is s et and the c lock (TV )

ind ic ates OFF-T IME.

- A u tom a ti c a lly turns to H ig h w h en the ON TIMER is s et an d the clo ck(T V)

ind ic ates ON - T IME.

- A u tom a ti c a lly turns to L o w w h en Au to Power OF F.

Power OFF



Power ON

CMOS Pu sh Pu ll

CMOS Pu sh- Pu ll



I50 1

- LA76070A (IC VIDEO P R O CE SS OR )

1. BLOCK DIAGRAM

2. PIN DESCRIPTIO N

PIN FUNCTION PIN FUNCTION

1 Ext. Video Input 52 FM Coil 2 VCO Tank 1 51 Audio Output 3 VCO Tank 2 50 FM Filter 4 IF Vcc 49 Sound IF Input 5 Audio Input 48 PIF APC Filter 6 RF AGC Output 47 Internal Video Input 7 FM Output 46 B us Ground 8 Volume Filter 45 Video Output 9 IF Ground 44 Bud Data

10 PIF Input 1 43 Bud Clock

11 PIF Input 2 42 Selected Video Output 12 IF A G C 41 Tes t IT F ilt e r 13 AFT Output 40 C Input 14 C hroma APC 39 Block Level Detector 15 3.58 Crystal 38 Y Input 16 R amp ALC Filter 37 Sync. Input 17 Vertical Output 36 Fast switch Input 18 H LOC K D et. Filter 35 Blue Input 19 32fh Resonator 34 G reen Input 20 H orizontal Ground 33 R ed Input 21 Standby Vcc 32 ABL 22 H orizontal AFC Filter 31 AC L 23 H orizontal Output 30 Blue Output 24 Flyback Pulse Input 29 G reen Output 25 X-Ray 28 R ed Output 26 Video/Vertical Vcc 27 Video/Vertical Ground

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