background image

Q704

2SC1815(GR)

220E

R763

12K

R762

10K

R761

1K

R764

47uF/25V

C739

+

10K

R765

270K

R760

ECO701

LDR

OPT

R769

OPT

R768

C

4

0

2

4

7

K

P

F

R

4

0

4

4

.7

E

O

P

T

R

4

0

5

4

.7

K

R

7

4

8

100

R743

R518

2.2K

D514

1SS133-T2

OPT

R530

OPT

C339

+

D524

HER108G

4K7,2W,OMR

R531

4.7uF/250

C535

+

0.1MLY

C336

R353

1.5K

C337

10/50

+

D331

1SS133

R351

180

R350

100

Q334

2SA1015(GR)

R402

10K

C422

0.1 MLY

D403

1SS133

D

4

4

3

H

E

R

1

0

8

G

R401

470E

R447

220E

SIP7

LA7840

IC401

1

4

3

2

5

6

7

C423

.47/63

+

R423
33K

R410

330E

C404

2200/35

+

R

4

1

1

4

R

7

C424

OPT

+

3.3K

R355

C742

4.7KPF

C333

270pF

390PF

C332

390PF

C331

R354

470K 1/2W

BW

K502

OPT

C580

C534

100/25

+

D542

MTZJ5.6(B)-T2

BW

R514

CN00V

2

1

C425
1000/35

+

390PF,5%

C010

5.6K

R019

C529

0.53/200V

OPT

R589

C577

0.1,MLY

C560

47/50

+

10

L708

0

.0

0

1

 M

Y

L

C

7

0

7

Q009

2SC1815(GR)

Q007

2SC1815(GR)

0

.4

7

/6

3

C

0

1

1

+

0.1 MLY

C013

0.1 MLY

C012

47K

R025

5.6K

R024

5.6K

R023

27K

R022

15K

R020

18K

R021

5131

D745

S741

S742

S743

S744

S745

D702

1SS133-T2

2SC1627A(OY)

Q521

R720

4.7K

R719

4.7K

.22MLY

C735

IC703

M24C08

1

2

3

4

5

6

7

8

56K

R736

10K

R729

2SC1815(GR)

Q703

R735

10K

C721

27pF

R734

22K

R737

10K

68K

R733

2.2K

R731

2.2KpF

C720

22K

R732

Q702

2

S

C

1

8

1

5

(G

R

)

R599

12K 2W OMR

5

4

3

2

1

U

CNOOU

1

2

3

4

12 uH

L541

2.2K,1/2W

R515

680 1/2W

R542

OPT

R513

R511

47K

2SD2578-YD

Q522

C526

8.2KpF,1.6KV

C528

47/160

+

1.8 1W

FR401

OPT

C410

HER108G

D401

0

.0

4

7

,1

0

0

V

 M

Y

L

A

R

C

5

1

2

10/250

C541

+

BW

FR521

Y503

BW

HER108G

D541

HER108G

D511

SHEET -

SCALE -

M

O

D

E

L

NAME

G

R

O

U

P

MATERIAL

FINISH

mm

DATE

DESIGNED

DRAWN

DRG. NUMBER

CHECKED

APPROVED

ELECTRONICS

MIRC

NTS

ONIDA HOUSE,MAHAKALI CAVES ROAD,ANDHERI(E),BOMBAY-93

MIRC ELECTRONICS LIMITED

ME40203-00B

T521

2

3

5

4

C521

0.0015,500V

C524

1/63

+

R526

15E 1W OMR

R521

BW

R522

560

OPT

YO43

DY01

DEF.YOKE

CNOOH

4

5

6

1/63

C710

+

100/10

C711

+

C709

.12MLY

47/25

C708

+

IC704

L78LR05E-MA

5V

5V

5.7V

11.5V

5

2

3

4

1

0V

L

7

0

6

L

7

0

5

L

7

0

4

L

7

0

3

C716

OPT

3.3K

R702

C

7

0

2

8

2

p

F

C701

27pF,50V

3

.3

K

R

7

0

1

1

S

S

1

3

3

-T

2

D

7

0

1

C719

OPT

680K

R730

L

7

0

2

C

E

L

P

0

2

6

-4

R

7

C717

.12MLY

CELP026-8R2

L701

R723

BW

C713

OPT

C712

OPT

R712

1K

47/25

C741

+

D748

MTZJ5.6(B)-T2

TSOP4838

IC741

GND

VCC

OUT

1

3

2

IC502

UPC574J

Q008

2SA1015(GR)

R512
39K

R573

BW

R

5

2

3

2

7

0

,1

/2

W

C523

0.0082MY,100V

C510

47/25

+

L542

CE41990-00A

L543

OPT

47KpF,100V

C585

R590

22E,1W OMR

7

.5

V

D

2

3

4

7.5V

D233

7.5V

D232

BW

Y006

BW

Y007

12K 2W OMR

R343

12K 2W OMR

R344

4.7K

R334

1.5K 1/2S

R346

150

R331

270

R337

Q331

2SC4722(NP)

4.7K

R335

1.5K 1/2W

R347

150

R332

270

R338

Q332

2SC4722(NP)

2SC4722(NP)

Q333

R339

270

R333

150

R348
1.5K 1/2W

R345

12K 2W OMR

R336

4.7K

SK001

ISHS43S

L331

180UH

R349

3.3K 1/2W

CN00U

4

3

2

1

1

2

3

4

5

.010 2KV

C338

C334

100/25

+

TP

TP-478

A34JAE10X

V01

R352

6.8K

C335

470/16

+

L545

CEM40323-00A

R413

3R9

B

1

2

3

4.7K

R759

R424
OPT

C421

100/50

+

OPT

D405

R403

10K

OPT

D404

E1MWFS20005-H01A

SUEFBT

T501

8

1

11

5

3

7

6

4

2

10

9

R420

OPT

OPT

D406

X701

8.00MHz

CRY1

C

7

4

3

4

7

0

 p

F

R776

27K

R777
8.2K

R778
4.7K

R779
2.2K

10K

R746

470

R741

R757

22K

CELPO26-4R7

L707

IC701

M37225

M37221

B

L

K

B

G

R

H

.S

IN

C

V

.S

Y

N

C

A

-M

U

T

E

P

O

W

E

R

G

N

D

X

T

A

L

 O

U

T

X

T

A

L

 I

N

G

N

D

T

V

/E

X

T

V

T

R

E

S

E

T

O

S

C

O

S

C

V

C

C

42

41

40

34

35

36

37

38

39

28

29

30

31

32

33

22

23

24

25

26

27

17

18

19

20

21

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

O

U

T

IN

N

C

N

C

N

C

N

C

S

C

L

S

D

A

K

B

D

_

IN

P

U

T

B

R

Q

U

H

F

V

H

V

L

R

E

M

N

C

N

C

N

C

N

C

N

C

B

G

D

K

I

N

C

N

C

N

C

N

C

C737

180pF

R415

OPT

BW

Y401

BW

Y009

C736

180pF

R767

OPT

R766

OPT

D760

OPT

OPT

D746

ECO

CSM10179-002

ADKAR

5E6

6E8

R413

R411

MEMORY

R.V. PANDIT

BW

BW

BW

BW

L703

L706

L705

L704

H.WIDTH

9V

R

E

V

IS

IO

N

(S

)

2

1

OPT     : NON-MOUNT(OPEN)

: SAFETY PARTS

BW    : BUS WIRE

.

NON

INV IN

GND

UP OUT

PUMP

VCC

IN

INV

VCC2

V-OUT

50V

QRC 122K-474Z

ORC122K-152Z

ORC122K-152Z

ORC122K-152Z

QCY33DK-103

ORG029J-123A

ORG029J-123A

ORG029J-123A

6

5

4

3

2

1

A

B

C

D

E

F

G

H

3

5

4

6

H

G

F

E

D

C

B

A

OUT

RESET

GND

CO

IN

5V REG/RESET

0V

0.1V

4.7V

0V

1V

4.1V

V. PULSE DRIVE

H. PULSE DRIVE

4.9V

4.9V

GND

GND

GND

0V

GND

4.9V

114V

B1

H. OUT

0V

0V

H. DRIVE TRANS.

QRD121J-562SY

H. DRIVE

45.2V

OV

0.3V

H

V

T

SCHEMATIC DIAGRAM

MAIN PCB

MAIN

POWER

RECEIVER

REMCON

D/A (BT)

D/A (BT)

D/A (BT)

ASSY

AUDIO PWB

2 / 2

MPP

H. LINEARITY COIL

MPP

MY.

PICTURE(ITC)

V01

BRAID

CRT SOCKET

150V

2.7V

2.7V

160V

2.7V

165V

2.7V

U

200V

T

B

G

R

SMZ-3001A

PWB ASSY

CRT SOCKET

2.6V

2.5V

FBT

VALUE

CKT. NO

MODIFICATIONS FOR 14" CTV

S

C

L

S

D

A

CH +

MENU

CH -

VOL +

VOL -

P

IN

 8

_

S

D

A

P

IN

 7

_

S

C

L

QRGO29J-472A

DELETE

C606,C607,R624

39K

BW(7.5)

R423

Y002

BW

R512

E1MWFS14010-H01A

FBT T501

TDA2614

IC601

BW

30uH

682,1.6KV MPP

L331

L541

L542

C526

C529

14"

CPT

1000uF/25V

22K,1/2W

39K,1/2W

R449

R448

R904

R903

CRT SOCKET

DELETE

0.33,5W MFR

ISMM10S

56K,1/4W

Q602,R602,R601

C404

R661

D615

DELETE

BW

BW(17.5)

354,200V MPP

NOTE

21/07/02

2

1

IG

O

D

L

X

+11.5V

ALARM

TV/EXT

A.MUTE

9V

B2

FBT-P

FBT-P

V.RAMP FEEDBACK

V RAMP

UHF

VH

VL

B. IN

ACL

F

B

L

K

B

IN

HD

R

IN

G

IN

2.8V

2.8V

2.8V

9V

0V

HPULSE

G

N

D

H

E

A

T

E

R

H

B

SCREEN

FOCUS

ANODE

U

H

F

V

H

V

L

STB15V

PW

B OUT

G OUT

R OUT

H

B

G

N

D

H

E

A

T

E

R

B1 GND

F. BLK

R. IN

G. IN

BT

B1 GND

B1

STB15V

PW

SDA

SCL

HPULSE

FBT-P

R OUT

G OUT

B OUT

S

D

A

S

C

L

G

N

D

11.5V

11.5V

SCREEN

ANODE

FOCUS

GND

GND

9V

B2

SDA

SCL

A

B

C

D

E

F

G

H

6

5

4

3

2

1

H

G

F

E

D

C

B

A

1

2

3

4

5

6

Summary of Contents for 14XS

Page 1: ...RVICE MANUAL COLOUR TELEVISION 14XS 20XS 21IQ 14TVE 20TVE 21TVE 21BLACK FGL FTG BASIC CHASSIS 3G UE DLX CONTENTS FEATURES ADJUSTMENT MANUAL STANDARD CIRCUIT DIAGRAM COPYRIGHT OCT 2003 MIRC ELECTRONICS LTD MUMBAI 1 ...

Page 2: ... Jack Audio 500 mV rms 4 dBs High impedance RCA Pin Jack 14TVE 14XS 14 Profile 20TVE 20XS 21TVE 20 Profile 21IQ 21 Profile 21FGL Power Consumption 70 W 65W 70W 80 W 80W 90 W 85 W 90W 90 W 95 W Picture Tube 14 14 14 20 20 21 20 21 21 21 36 cm 36 cm 36 cm 51 cm 51 cm 53 cm 51 cm 53 cm 53cm 53cm Audio output W PMPO 120 60 120 200 100 200 200 120 200 200 Dimensions Width mm 390 365 373 547 506 553 504...

Page 3: ...DIGITAL CLOCK ZAP MUSIC MODE GAMES MONO 2 SPK 20XS 250 PROGRAMS 100W PMPO DIGINET HALF MUTE BLACK STRETCH CHILD SAFE DIGITAL CLOCK ZAP MUSIC MODE GAMES MONO 2 SPK 21IQ 250 PROGRAMS 120W PMPO DIGINET HALF MUTE BLACK STRETCH CHILD SAFE DIGITAL CLOCK ZAP MUSIC MODE GAMES MONO 2 SPK 2 ...

Page 4: ...ALANCE GAMES STEREO PLAYBACK 20TVE 250 PROGRAMS CHILD SAFE ZAP AUDIO STATUS MEMORY 200 W PMPO CHANNEL LOCK MUSIC MODE DIGITAL EYE BASS TREBLE BALANCE GAMES STEREO PLAYBACK 21TVE 250 PROGRAMS CHILD SAFE ZAP AUDIO STATUS MEMORY 200 W PMPO CHANNEL LOCK MUSIC MODE DIGITAL EYE BASS TREBLE BALANCE GAMES STEREO PLAYBACK 3 ...

Page 5: ...4 21BLACK FGL FTG FLAT SCREEN 250 PROGRAMS CHILD SAFE ZAP AUDIO STATUS MEMORY 200 W PMPO DIGINET CHANNEL LOCK MUSIC MODE DIGITAL EYE BASS TREBLE BALANCE GAMES DIGITAL CLOCK ...

Page 6: ...e various parameters not specified as FIX are closer to the values to be adjusted The final adjustment should be as per the procedure specified B Digits mentioned in the Service Menu should not be changed wherever Fix is mentioned elsewhere they are subject to change as per procedure specified DATE APPROVED BY CHECKED BY ISSUED 5 ...

Page 7: ...SSM PRESETS 3 VCO Adjustment 4 Low light Adjustment 5 High light Adjustment 6 Bright Adjustment 7 Contrast Adjustment 8 Colour Adjustment PAL 9 Tint Adjustment NTSC 10 Focus Adjustment 11 Vertical Size Adj 12 Vertical Centering 13 Horizontal Centering 14 RFAGC Adjustment 15 High Voltage Confirmation 6 ...

Page 8: ... LEFT OR RIGHT key H LINE 1 To get H line press VSM and DISPLAY Simultaneously 2 Press CURSOR UP KEY to get R CUTOFF 3 Press 0 to get H line 4 To come out of H line again press 0 VSM PRESET There are FOUR VSM PRESETS CARTOON FILM POP NEWS For the setting of individual VSM PRESETS 1 Press VSM and DISPLAY at the same time 2 Press CURSOR DOWN key to get the Setting for the VSM PRESET 3 Press CURSOR D...

Page 9: ...S 32 60 39 48 32 SPORTS 25 50 30 42 32 FILM POP 48 60 52 63 32 DIGITAL EYE STAGE1 15 25 26 32 32 STAGE2 17 35 32 32 32 STAGE3 20 40 32 32 32 STAGE4 25 50 32 32 32 STAGE5 32 55 32 32 32 SSM BASS TREBBLE CARTOON 08 08 NEWS 12 08 SPORTS 12 12 FILM POP 16 16 8 ...

Page 10: ...VERTICAL SIZE 33 ZOOM SIZE 55 VERTICAL POS 02 H CENTER 50 07 H CENTER 60 08 RF AGC 56 VCO 7F Fix D TRAP 00 Fix F TRAP 00 Fix HR 03 CV 09 DT PAL 07 Fix DT SECAM 05 Fix DT NTSC 05 Fix DT BW 07 Fix AV TINT 0F Fix AV SHARPNESS 0F Fix B G 01 Fix I 01 Fix D K K1 01 Fix SECAM 01 Fix N3 58 01 Fix VIDEO GAIN 05 Fix BGPSW 01 Fix 00 FOR SECAM BPF 01Fix STEREO 01FIX POWER BASS 00 FIX SURROUND 00FIX SOFT TONE ...

Page 11: ...f Saw Filter after disconnecting IF output of Tuner 4 Connect Digital Multimeter to AFC out pin no 2 of VCD IC52771 IC201 5 Adjust VCO coil in such a way that Digital Multimeter shows 4V sudden change in voltage reading from 8V This voltage should be adjusted whenever there is sudden fall from 8V to 1V as shown NOTE use non metallic adjustment tool eg ceramic for adjustment Correct AFT voltage ali...

Page 12: ...ush 0 key on any mode to make a horizontal line 5 Turn the screen knob the Bottom of FBT gradually from fully left to the right search for the first appearing colour 6 Adjust two colours except for the first colour which appears by the adjustment 5 to the white colour with the following 1 6 key 7 Turn the screen knob so that a horizontal line appear slightly 8 Change the normal screen by pushing 0...

Page 13: ...vice Menu 3 Adjust R DRIVE B DRIVE so that the white balance is at the directed value Adjustment point A 4 Check if the tracking of white balance from Low light till High light is good Model Adjustment point A Colour temperature X Y ALL 9300 K 0 290 0 291 5 Receive the pedestal pattern signal 6 Check if the white balance of low light is good If the white balance of the low light is not good adjust...

Page 14: ... adjustment should be done in advance Adjustment 1 Receive the Black pedestal pattern signal Procedure 2 Select Sub Bright in the Service Menu 3 Adjust the Sub Bright so that the point of below table gradation value does not shine Model Adj Point 14 20 21 0 Note While entering in Service Menu by default it takes the values of VSM cartoon hence the above parameter is adjusted with respect to cartoo...

Page 15: ...rocedure 2 Connect the probe of the oscillocsope to green catthode 3 Select Sub Contrast in the Service Menu 4 Adjust it so that the value between the dot line white peak of the signal waveform as mentioned below to be the directed voltage as mentioned in the Table below Model Adj Point 14 70V 20 21 80V Note While entering in Service Menu by default it takes the values of VSM cartoon hence the abo...

Page 16: ...NAMIC mode Adjustment 1 Receive the PAL colour bar pattern signal 2 Connect the probe of the oscilloscope to green cathode 3 Select Sub color in the Service Menu 4 Adjust the Sub color so that the value between the white peak blue as per below table Model Adj Point 14 20 21 3V Note While entering in the SERVICE MENU by default it takes the value of VSM cartoon hence the above parameter is adjusted...

Page 17: ...de Adjustment 1 Connect the NTSC Video Colour bar pattern signal Procedure White 75 to Video input Terminal 2 Connect the probe of the oscilloscope to BLUE CATHODE 3 Adjust the Sub Tint so that the value between the white peak and Magenta is as per the table shown below Model Adj point TINT 14 20 21 5V Note While entering in the SERVICE MENU by default it takes the value of VSM cartoon hence the a...

Page 18: ...easuring Equipment Preparation before Adj Adjustment of Brightness Contrast should be done in advance Adjustment 1 Receive the monoscope pattern signal Procedure Turn the focus control knob clockwise and anticlockwise on FBT watching the screen adjust it so as to get good clear and Focused picture 17 ...

Page 19: ...ion before Adj Adjustment 1 Receive the monoscope pattern signal Procedure 2 Select Vertical Size in the Service menu Adjust Vertical Size by varying cursor left right keys to get 92 of picture size 3 When both up down lines are located within the 88 96 range of the standard lines on the monoscope pattern signal it is OK 18 ...

Page 20: ...e l ALL Measuring Equipment Preparation before Adj Adjustment 1 Receive the monoscope pattern signal Procedure 2 Select Vertical Pos option in the Service menu Adjust Vertical Pos using cursor left right in such a way that the centre of monoscope to be the nearest position of CRT centre line 19 ...

Page 21: ...oscope pattern signal Procedure 2 Select H Center 50 in Service Menu 3 Adjust it so that H H becomes equal as shown below There is a separate H centering for AV mode 50 Hz also The same can be adjusted in AV mode also 4 Connect the monoscope pattern signal 60Hz to Video input terminal 5 Select H Center 60 in Service Menu adjust it so that H H becomes equal as shown below 20 ...

Page 22: ...or Philips 5V tuner input signal shoud be 60dbuV For Samsung 5V tuner input signal shoud be 70dbuV 4 Connect the multimeter to TP AGC on main board near tuner 5 Adjust RFAGC till the voltage is 4Vdc Method 2 1 Receive the PAL colour bar pattern signal Input level is 75dBµV term 2 Adjust RF AGC so that Noise is min on picture or VIDEO OUT 3 Receive the PAL halfcolour bar pattern signal Input level ...

Page 23: ...is 2 Connect the probe of High Voltage meter to the anode of the CRT 3 Switch ON the Set receive the monoscope signal and check for the High Voltage meter reading is as per the table given below MODEL LOWER LIMIT STANDARD UPPER LIMIT 14 22KV 23KV 24KV 20 25 KV 26 KV 28 KV 4 Disconnect the probe side first next the earth side NOTE Electrostatic type of the high voltmeter should be used as the measu...

Page 24: ...V 0 1V 1 4V 0 5V 0 1V 0 1V 290V VCC INH F B DCP DRV SINK B GND C 9 8 7 6 5 4 3 1 2 C914 390PF 2KV D904 HER108G C912 220 16 R996 10K R905 12E 1W R927 47K R919 5 6K 1 2W R904 2R7 2W R903 0 27E 5W C918 0015 C913 220 35 C917 OPT R910 1K MTZJ12 C T2 D912 C911 001 2KV L921 CELC058 820 C921 2 7KpF 500V D921 RU3AM LFC4 K921 CE42050 001 OPT Q923 R925 OPT R921 2 2K OPT Q924 R935 22K PC901 TLP721F GR 2 1 3 4...

Page 25: ...C4722 NP 2SC4722 NP Q333 R339 270 R333 150 R348 1 5K 1 2W R345 12K 2W OMR R336 4 7K SK001 ISHS43S L331 180UH R349 3 3K 1 2W CN00U 4 3 2 1 1 2 3 4 5 010 2KV C338 C334 100 25 TP TP 478 A34JAE10X V01 R352 6 8K C335 470 16 L545 CEM40323 00A R413 3R9 B 1 2 3 4 7K R759 R424 OPT C421 100 50 OPT D405 R403 10K OPT D404 E1MWFS20005 H01A SUEFBT T501 8 1 11 5 3 7 6 4 2 10 9 R420 OPT OPT D406 X701 8 00MHz CRY1...

Page 26: ...8 17 16 15 14 13 12 11 7 6 5 2 3 4 1 10 UF 50V C657 C659 100UF 16V R655 1 5K R654 2 2K R656 1 5K R653 2 2K 10 UF 50V C658 C655 150KPF C652 5 6KPF C654 150KPF C656 330KPF C653 330KPF C651 5 6KPF R652 2K R651 2K 9 PIN D 5 4 3 2 1 6 7 8 9 B 3 PIN 1 2 3 DIGITAL EYE PIN NO 29 OF MICON 5 V 11 5V 11 5V 5 V 9V CREF VCC R OUT L OUT RIN 2 RIN 1 LIN 1 LIN 2 MUXOUT L MUXOUT R BIN R BOUT R BIN L TREB L TREB R ...

Page 27: ...14XS 20XS 21IQ 14TVE 20TVE 21TVE 21BLACK FGL FTG ...

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