Samsung CL25M2MQUX Manuel utilisateur

Specifications

Alignment and Adjustments

Block Diagram

Exploded View & Part List

Electrical Part List

Schematic Diagrams

COLOR TELEVISION RECEIVER

Chassis : KS7A(N_R2)_Gold Rush

Model : CL25M2MQUX/XAX

SERVICE Manual

COLOR TELEVISION RECEIVER CONTENTS

This Service Manual is a property of Samsung Electronics Co.,Ltd.

Any unauthorized use of Manual can be punished under applicable

International and/or domestic law.

©Samsung Electronics Co., Ltd. May. 2005

Printed in Korea

AA82-02527A

ELECTRONICS

Alignment and Adjustments

Samsung Electronics 2-1

2. Alignment and Adjustments

2-1 General Alignment Instructions

1. Usually, a color TV-VCR needs only slight touch-up

adjustment upon installation.

Check the basic characteristics such as height,

horizontal and vertical sync and focus.

2. Observe the picture for good black and white

details. There should be objectionable color shading;

if color shading is present, demagnetize, perform purity

and convergence adjustments described below.

3. Use the specified test equipment or its equivalent.

4. Correct impedance matching is essential.

5. Avoid overload. Excessive signal from a sweep

generator might overload the front-end of the TV.

When inserting signal markers, do not allow the marker

generator to distort test results.

6. Connect the TV only to an AC power source with voltage

and frequency as specified on the backcover ameplate.

7. Do not attempt to connect or disconnect any wires while

the TV is turned on. Make sure that the power cord is

disconnected before replacing any parts.

8. To protect against shock hazard, use an isolation

transformer.

2-2 Automatic Degaussing

A degaussing coil is mounted around the picture tube,

so that external degaussing after moving the TV should

be unnecessary. But the receiver must be properly

degaussed upon installation.

The degaussing coil operates for about 1 second after

the power is switched ON. If the set is moved or turned

in a different direction, the power should be OFF for at

least 10 minutes.

If the chassis or parts of the cabinet become

magnetized, poor color purity will result. If this happens,

use an external degaussing coil. Slowly move the

degaussing coil around the faceplate of the picture tube

and the sides and front of the receiver. Slowly withdraw

the coil to a distance of about 6 feet before turning

power OFF.

If color shading persists, perform the following Color

purity and Convergence adjustments.

2-3 High Voltage Check

CAUTION : There is no high voltage adjustment on this

chassis. The B+ power supply should be +135 volts (with

full color- bar input and normal picture level).

1. Connect a digital voltmeter to the second anode of the

picture tube.

2. Turn on the TV. Set the Brightness and Contrast

controls to minimum (zero beam current).

3. Adjust the Brightness and contrast controls to both

extremes. Ensure that the high voltage does not exceed

30 KV under any conditions.

Alignment and Adjustments

2-2 Samsung Electronics

2-4 FOCUS Adjustment

1. Iput a black and white signal.

2. Adjust the tuning control for the clearest picture.

3. Adjust the FOCUS control for well defined scanning lines in the center area of the screen.

2-5 Factory Adjustment

1. To enter the "Service Mode", Press the remote-control keys in this sequence :

- If you do not have Factory remote-control

- If you have Factory remote-control

PICTURE OFF PICTURE ON

MUTE 1 8 2

PICTURE ON DISPLAY ( )FACTORY

2-5-1 Service Mode

2-5-2 Factoy Mode OSD

Service

Deflection

Video Adujst 1

Video Adujst 2

Video Adujst 3

OPTION

YC DELAY

TEST PATTERN

EEPROM

BUS STOP

CHCKSUM

RESET

G2 ADJUST

2-5-2(A) ADJUST

Alignment and Adjustments

Samsung Electronics 2-3

DEFLECTION (NT 60Hz)

2-6 Functions of Each Port in Service Mode

Item Remark

CL29T21

CL29M21

CT29M20MQUXXTC

CT29M16MQUXXTC

CT29K10MQUXXTW CL25M6

CL25M5 CT25M20MQUXXTC TXP2434FX

TXP2734FX

TXP2728FX

TXP2730FX

TXP2730S

CL21S8

CL21T21

CL21M21

CT21T20MQUXXTC

29" SDI MST 29" SDI MST 25" SDI MST 25" SDI MST 25" SDI MST 29" SDI MST 21" SDI MST

V Amp ADJ 28 28 9 9 9 28 31

V Shift ADJ -30 -30 -20 -20 -20 -30 -28

H EW ADJ -2 -2 40 40 40 -2 14

H Shift ADJ 130 130 123 123 123 130 146

V Linearity ADJ -8 -8 -8 -8 -8 -8 -4

V SC FIX 43 43 43 43 43 43 43

H Parabola ADJ 67 67 60 60 60 63 7

Upper Corner ADJ 1 1 -2 -2 -2 1 8

Lower Corner ADJ -10 -10 -13 -13 -13 -10 -4

Upper Corner6 FIX -7 -7 -7 -7 -7 -7 -7

Lower Corner6 FIX 8 8 8 8 8 8 8

H Trapezium ADJ 9 9 8 8 8 9 4

Bow ADJ 3 3 -1 -1 -1 3 3

Angle ADJ 0 0 0 0 0 0 0

EHT Time FIX 20 20 20 20 20 20 20

EHT Threshold FIX 1 1 1 1 1 1 1

EHT Vertical FIX -12 -12 -12 -12 -12 -12 -12

EHT Horizontal FIX 77 77 77 77 77 77 77

EHT Vertical2 FIX -10 -10 -10 -10 -10 -10 -10

EHT Horizontal2 FIX 8 8 8 8 8 8 17

Item Remark

Brazil

CL34Z6P

Brazil

CL29Z6P

CL29M21

Brazil

CL21M21

CL21N11

34" TSB(USA) MTPD 29" SDI MST 29" SDI MST

V Amp ADJ 28 28 31

V Shift ADJ -30 -30 -28

H EW ADJ -2 -2 14

H Shift ADJ 130 130 146

V Linearity ADJ -8 -8 -6

V SC FIX 43 43 34

H Parabola ADJ 67 67 7

Upper Corner ADJ 1 1 8

Lower Corner ADJ -10 -10 -4

Upper Corner6 FIX -7 -7 -7

Lower Corner6 FIX 8 8 8

H Trapezium ADJ 9 9 4

Bow ADJ 3 3 3

Angle ADJ 0 0 0

EHT Time FIX 20 20 30

EHT Threshold FIX 1 1 10

EHT Vertical FIX 2 -12 0

EHT Horizontal FIX 30 77 0

EHT Vertical2 FIX -17 -10 -50

EHT Horizontal2 FIX 7 8 0

Alignment and Adjustments

2-4 Samsung Electronics

DEFLECTION (PAL 50Hz)

Item Remark

CL29T21

CL29M21

CT29M20MQUXXTC

CT29M16MQUXXTC

CT29K10MQUXXTW CL25M6

CL25M5 CT25M20MQUXXTC TXP2434FX

TXP2734FX

TXP2728FX

TXP2730FX

TXP2730S

CL21S8

CL21T21

CL21M21

CT21T20MQUXXTC

29" SDI MST 29" SDI MST 25" SDI MST 25" SDI MST 25" SDI MST 29" SDI MST 21" SDI MST

V Amp ADJ 4 0 0 0 0 0 0

V Shift ADJ -6 -6 -6 -6 -6 -6 -6

H EW ADJ 0 0 0 0 0 0 0

H Shift ADJ -16 -12 -12 -12 -12 -12 -12

V Linearity ADJ 0 3 3 3 3 3 3

V SC FIX 0 0 0 0 0 0 0

H Parabola ADJ 0 0 0 0 0 0 0

Upper Corner ADJ 0 0 0 0 0 0 0

Lower Corner ADJ 0 0 0 0 0 0 0

Upper Corner6 ADJ 0 0 0 0 0 0 0

Lower Corner6 ADJ 0 0 0 0 0 0 0

H Trapezium ADJ 0 0 0 0 0 0 0

Bow FIX 0 0 0 0 0 0 0

Angle FIX 0 0 0 0 0 0 0

EHT Time FIX 20 20 20 20 20 20 20

EHT Threshold FIX 1 1 1 1 1 1 1

EHT Vertical FIX -12 -12 -12 -12 -12 -12 -12

EHT Horizontal FIX 77 77 77 77 77 77 77

EHT Vertical2 FIX -10 -10 -10 -10 -10 -10 -10

EHT Horizontal2 FIX 8 8 8 8 8 8 8

Item Remark

Brazil

CL34Z6P

Brazil

CL29Z6P

CL29M21

Brazil

CL21M21

CL21N11

34" TSB(USA) MTPD 29" SDI MST 29" SDI MST

V Amp ADJ 4 4 4

V Shift ADJ -6 -6 -6

H EW ADJ 0 0 0

H Shift ADJ -16 -16 -16

V Linearity ADJ 0 0 0

V SC FIX 0 0 0

H Parabola ADJ 0 0 0

Upper Corner ADJ 0 0 0

Lower Corner ADJ 0 0 0

Upper Corner6 ADJ 0 0 0

Lower Corner6 ADJ 0 0 0

H Trapezium ADJ 0 0 0

Bow FIX 0 0 0

Angle FIX 0 0 0

EHT Time FIX 20 20 30

EHT Threshold FIX 1 1 10

EHT Vertical FIX 2 -12 0

EHT Horizontal FIX 30 77 0

EHT Vertical2 FIX -17 -10 -50

EHT Horizontal2 FIX 7 8 0

Alignment and Adjustments

Samsung Electronics 2-5

Video Adjust 1

Item Remark

CL29T21

CL29M21

CT29M20MQUXXTC

CT29M16MQUXXTC

CT29K10MQUXXTW CL25M6

CL25M5 CT25M20MQUXXTC TXP2434FX

TXP2734FX

TXP2728FX

TXP2730FX

TXP2730S

CL21S8

CL21T21

CL21M21

CT21T20MQUXXTC

29" SDI MST 29" SDI MST 25" SDI MST 25" SDI MST 25" SDI MST 29" SDI MST 21" SDI MST

R Cutoff ADJ 127 127 127 127 127 127 127

G Cutoff FIX 127 127 127 127 127 127 127

B Cutoff ADJ 127 127 127 127 127 127 127

R Drive ADJ 127 127 127 127 127 127 127

G Drive FIX 127 127 127 127 127 127 127

B Drive ADJ 127 127 127 127 127 127 127

Sub Bright ADJ 60 60 60 60 60 60 60

Sub Contrast ADJ 49 49 49 49 49 49 49

Sub Color FIX 0 0 0 0 0 0 0

Sub Tint FIX 46 46 46 46 46 46 46

AKB Option FIX 1 1 1 1 1 1 1

BCL Threshold FIX 24 24 21 21 21 24 20

BCL Gain FIX 200 200 240 240 240 200 240

BCL Time FIX 100 100 230 230 230 100 230

Sub Sharpness FIX 10 10 15 15 15 10 15

Pilot Low FIX 25 25 25 25 25 25 25

Pilot High FIX 45 45 45 45 45 45 45

V-Mute(x100ms) FIX 3 3 3 3 3 3 3

BCL TCUP FIX 65 - 65 65 65 65 65

Item Remark

Brazil

CL34Z6P

Brazil

CL29Z6P

CL29M21

Brazil

CL21M21

CL21N11

34" TSB(USA) MTPD 29" SDI MST 29" SDI MST

R Cutoff ADJ 127 127 127

G Cutoff FIX 127 127 127

B Cutoff ADJ 127 127 127

R Drive ADJ 127 127 127

G Drive FIX 127 127 127

B Drive ADJ 127 127 127

Sub Bright ADJ 60 60 60

Sub Contrast ADJ 49 49 49

Sub Color FIX 0 0 0

Sub Tint FIX 46 46 46

AKB Option FIX 1 1 1

BCL Threshold FIX 28 24 21

BCL Gain FIX 200 200 200

BCL Time FIX 100 100 100

Sub Sharpness FIX 10 10 10

Pilot Low FIX 25 25 25

Pilot High FIX 45 45 45

V-Mute(x100ms) FIX 3 3 3

BCL TCUP FIX 65 65 65

Alignment and Adjustments

2-6 Samsung Electronics

Video Adjust 2

Item Remark

CL29T21

CL29M21

CT29M20MQUXXTC

CT29M16MQUXXTC

CT29K10MQUXXTW CL25M6

CL25M5 CT25M20MQUXXTC TXP2434FX

TXP2734FX

TXP2728FX

TXP2730FX

TXP2730S

CL21S8

CL21T21

CL21M21

CT21T20MQUXXTC

29" SDI MST 29" SDI MST 25" SDI MST 25" SDI MST 25" SDI MST 29" SDI MST 21" SDI MST

VSU FIX 2 2 2 2 2 2 2

Melody Volume FIX 5 5 5 5 5 5 5

HB Start FIX 159 159 159 159 159 159 159

HB Stop FIX 149 149 149 149 149 149 149

RF AGC FIX 1 1 1 1 1 1 1

VM Gain FIX 7 7 0 0 0 6 0

VM Delay FIX 7 7 4 4 4 4 4

V Peaking FIX 12 12 12 12 12 12 12

BLE Tilt FIX 7 7 7 7 7 7 7

BLE Gain FIX 2 2 2 2 2 1 2

BLE Mode FIX 2 2 2 2 2 2 2

BLE Break FIX 1 1 1 1 1 1 1

CTI Gain FIX 1 1 1 1 10 10 1

CTI Coring FIX 15 15 15 15 5 5 15

LTI Gain FIX 15 15 15 15 15 15 15

D-EHT Time FIX 5 5 5 5 5 5 6

DCT Ratio FIX 50 50 50 50 50 50 50

VSP COMB FIX 3 3 3 3 3 3 3

Item Remark

Brazil

CL34Z6P

Brazil

CL29Z6P

CL29M21

Brazil

CL21M21

CL21N11

34" TSB(USA) MTPD 29" SDI MST 29" SDI MST

VSU FIX 2 2 2

Melody Volume FIX 5 5 5

HB Start FIX 159 159 159

HB Stop FIX 149 149 120

RF AGC FIX 1 1 1

VM Gain FIX 7 7 7

VM Delay FIX 7 7 7

V Peaking FIX 12 12 12

BLE Tilt FIX 7 7 7

BLE Gain FIX 2 2 2

BLE Mode FIX 2 2 2

BLE Break FIX 1 1 1

CTI Gain FIX 1 1 1

CTI Coring FIX 15 15 15

LTI Gain FIX 15 15 15

D-EHT Time FIX 5 5 5

DCT Ratio FIX 50 50 50

VSP COMB FIX 3 3 3

Alignment and Adjustments

Samsung Electronics 2-7

Video Adjust 3

Item Remark

CL29T21

CL29M21

CT29M20MQUXXTC

CT29M16MQUXXTC

CT29K10MQUXXTW CL25M6

CL25M5 CT25M20MQUXXTC TXP2434FX

TXP2734FX

TXP2728FX

TXP2730FX

TXP2730S

CL21S8

CL21T21

CL21M21

CT21T20MQUXXTC

29" SDI MST 29" SDI MST 25" SDI MST 25" SDI MST 25" SDI MST 29" SDI MST 21" SDI MST

NR Off Value FIX 3 3 3 3 3 3 3

Gamma Mode FIX 1 1 1 1 1 1 1

Gamma Correction FIX 50 50 60 60 60 30 50

BST StartPoint FIX 145 145 145 145 145 145 145

BST Gain(B) FIX 50 50 50 50 50 50 50

DPWL Gain FIX 80 80 80 80 80 80 80

DPWL Start FIX 155 155 155 155 155 155 155

PIP Contrast FIX 15 15 10 10 10 10 15

PIP Tint FIX 63 63 63 63 63 63 63

PIP Color FIX 5 5 7 7 7 7 5

PIP PAL V.Pos FIX 24 24 24 24 24 24 24

PIP NTSC V.Pos FIX 23 23 23 23 23 23 23

PIP H.Pos FIX 39 39 39 39 39 39 39

PIP R Cutoff FIX 2 2 4 4 4 4 2

PIP B Cutoff FIX 1 1 5 5 5 5 1

PIP R Drive FIX 170 170 168 168 168 168 170

PIP B Drive FIX 190 190 212 212 212 212 190

Item Remark

Brazil

CL34Z6P

Brazil

CL29Z6P

CL29M21

Brazil

CL21M21

CL21N11

34" TSB(USA) MTPD 29" SDI MST 29" SDI MST

NR Off Value FIX 3 3 3

Gamma Mode FIX 1 1 1

Gamma Correction FIX 50 50 50

BST StartPoint FIX 145 145 145

BST Gain(B) FIX 50 50 50

DPWL Gain FIX 80 80 80

DPWL Start FIX 155 155 155

PIP Contrast FIX 15 15 15

PIP Tint FIX 63 63 63

PIP Color FIX 5 5 5

PIP PAL V.Pos FIX 24 24 24

PIP NTSC V.Pos FIX 23 23 23

PIP H.Pos FIX 39 39 39

PIP R Cutoff FIX 2 2 2

PIP B Cutoff FIX 1 1 1

PIP R Drive FIX 170 170 170

PIP B Drive FIX 190 190 190

Alignment and Adjustments

2-8 Samsung Electronics

YC DELAY

Test Pattern

Item Remark

CL29T21

CL29M21

CT29M20MQUXXTC

CT29M16MQUXXTC

CT29K10MQUXXTW CL25M6

CL25M5 CT25M20MQUXXTC TXP2434FX

TXP2734FX

TXP2728FX

TXP2730FX

TXP2730S

CL21S8

CL21T21

CL21M21

CT21T20MQUXXTC

29" SDI MST 29" SDI MST 25" SDI MST 25" SDI MST 25" SDI MST 29" SDI MST 21" SDI MST

PAL Delay FIX 0 0 0 0 0 0 0

SECAM Delay FIX -2 -2 -2 -2 -2 -2 -2

NTSC Delay FIX -3 -3 -3 -3 -3 -3 -3

PAL(AV) Delay FIX -1 -1 -1 -1 -1 -1 -1

SECAM(AV) Delay FIX -3 -3 -3 -3 -3 -3 -3

NTSC(AV) Delay FIX -4 -4 -4 -4 -4 -4 -4

Item Remark

Brazil

CL34Z6P

Brazil

CL29Z6P

CL29M21

Brazil

CL21M21

CL21N11

34" TSB(USA) MTPD 29" SDI MST 29" SDI MST

PAL Delay FIX 0 0 0

SECAM Delay FIX -2 -2 -2

NTSC Delay FIX -3 -3 -3

PAL(AV) Delay FIX -1 -1 -1

SECAM(AV) Delay FIX -3 -3 -3

NTSC(AV) Delay FIX 0 0 0

Item Remark

CL29T21

CL29M21

CT29M20MQUXXTC

CT29M16MQUXXTC

CT29K10MQUXXTW CL25M6

CL25M5 CT25M20MQUXXTC TXP2434FX

TXP2734FX

TXP2728FX

TXP2730FX

TXP2730S

CL21S8

CL21T21

CL21M21

CT21T20MQUXXTC

29" SDI MST 29" SDI MST 25" SDI MST 25" SDI MST 25" SDI MST 29" SDI MST 21" SDI MST

Test Pattern FIX 0 0 0 0 0 0 0

Item Remark

Brazil

CL34Z6P

Brazil

CL29Z6P

CL29M21

Brazil

CL21M21

CL21N11

34" TSB(USA) MTPD 29" SDI MST 29" SDI MST

Test Pattern FIX 0 0 0

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