Samsung hcp4241w service manual

PROJECTION TV RECEIVER

Chassis : P60A(N) Model : HCP4241WX/XAA (HC-P4241W)

PROJECTION TV RECEIVER CONTENTS

Feature and Advantages

Precautions

Specifications

Alignment and Adjustments

Diagnostics

Exploded View and Parts List

Electric Parts List

PCB Diagrams

Schematic Diagrams

1.

2.

3.

4.

5.

6.

7.

8.

9.

ELECTRONICS

Printed in Korea

AA82-01460A

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.

2. Precautions

2-1 Safety Precautions

1. Be sure that all of the built-in protective devices are replaced. Restore any missing protective shields.

2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including: nonmetallic control knobs and compartment covers.

3. Make sure that there are no cabinet openings through which people—particularly children—might insert fingers and contact dangerous voltages. Such openings include the spacing between the picture tube and the cabinet mask, excessively wide cabinet

ventilation slots, and improperly fitted back

covers.

If the measured resistance is less than 1.0 megohm or greater than 5.2 megohms, an abnormality exists that must be corrected before the unit is returned to the customer.

4. Leakage Current Hot Check (Figure 1-1): Warning: Do not use an isolation transformer during this test. Use a leakagecurrent tester or a metering system that complies with American National Standards Institute (ANIS C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7).

5. With the unit completely reassembled, plug the AC line cord directly into the power outlet. With the unit’s AC switch first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit, etc.) and all exposed metal parts, including: antennas, handle brackets, metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5 milliamp. Reverse the powerplug prongs in the AC outlet and repeat the test.

Fig. 1-1 AC Leakage Test

6. Antenna Cold Check: With the unit’s AC plug disconnected from the AC source, connect an electrical jumper across the two AC prongs. Connect one lead of the ohmmeter to an AC prong. Connect the other lead to the coaxial connector.

7. X-ray Limits: The picture tube is especially designed to prohibit X-ray emissions. To ensure continued X-ray protection, replace the picture tube only with one that is the same type as the original. Carefully reinstall the picture tube shields and mounting hardware; these also provide X-ray protection.

8. High Voltage Limits: High voltage must be measured each time servicing is done on the B+, horizontal deflection or high voltage circuits. Correct operation of the X-ray protection circuits must be reconfirmed whenever they are serviced.

(X-ray protection circuits also may be called

“horizontal disable” or “hold-down”.)

Heed the high voltage limits. These include the X–ray Protection Specifications Label, and the Product Safety and X-ray Warning Note on the service data schematic.

Precautions

Samsung Electronics 2-1

LEAKAGE CURRENT

TESTER

DEVICE UNDER

TEST

TEST ALL

EXPOSED METAL

SURFACES

2-WIRE CORD

ALSO TEST WITH

PLUG REVERSED

(USING AC ADAPTER

PLUG AS REQUIRED)

EARTH

GROUND

(READING SHOULD

NOT BE ABOVE

0.5mA)

Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays.

2-1 Safety Precautions (Continued)

9. High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components.

10. Design Alteration Warning: Never alter or add to the mechanical or electrical design of this unit. Example: Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard. Also, any design changes or additions will void the manufacturer’s warranty.

11. Hot Chassis Warning: Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord. If an isolation transformer is not used, these units may be safely serviced only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC source.

To confirm that the AC power plug is inserted correctly, do the following: Using an AC voltmeter, measure the voltage between the chassis and a known earth ground. If the reading is greater than 1.0V, remove the AC power plug, reverse its polarity and reinsert. Re-measure the voltage between the chassis and ground.

12. Some TV chassis are designed to operate with 85 volts AC between chassis and ground, regardless of the AC plug polarity. These units can be safely serviced only if an isolation transformer inserted between the receiver and the power source.

13. Some TV chassis have a secondary ground system in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two ground systems are electrically separated by insulating material that must not be defeated or altered.

14. Components, parts and wiring that appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications. Always determine the cause of damage or overheating, and correct any potential hazards.

15. Observe the original lead dress, especially near the following areas: Antenna wiring, sharp edges, and especially the AC and high voltage power supplies. Always inspect for pinched, out-of-place, or frayed wiring. Do not change the spacing between components and the printed circuit board. Check the AC power cord for damage. Make sure that leads and components do not touch thermally hot parts.

16. Picture Tube Implosion Warning: The picture tube in this receiver employs “integral implosion” protection. To ensure continued implosion protection, make sure that the replacement picture tube is the same as the original.

17. Do not remove, install or handle the picture tube without first putting on shatterproof goggles equipped with side shields. Never handle the picture tube by its neck. Some “in-line” picture tubes are equipped with a permanently attached deflection yoke; do not try to remove such “permanently attached” yokes from the picture tube.

18. Product Safety Notice: Some electrical and mechanical parts have special safety-related characteristics which might not be obvious from visual inspection. These safety features and the protection they give might be lost if the replacement component differs from the original—even if the replacement is rated for higher voltage, wattage, etc.

Components that are critical for safety are indicated in the circuit diagram by shading, ( ) or ( ).

Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards.

Precautions

2-2 Samsung Electronics

2-2 Servicing Precautions

1. Servicing precautions are printed on the cabinet. Follow them.

2. Always unplug the unit’s AC power cord from the AC power source before attempting to: (a) Remove or reinstall any component or assembly, (b) Disconnect an electrical plug or connector, (c) Connect a test component in parallel with an electrolytic capacitor.

3. Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position.

4. After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that the portion around the serviced part has not been damaged.

5. Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks).

6. Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect an insulation resistance meter (500V) to the blades of the AC plug.

The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be greater than 1 megohm.

7. Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its assemblies) unless all solid-state heat sinks are correctly installed.

8. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last.

9. When some parts inside the optical engine (except lamp) are damaged, replace the whole optical engine.

Precautions

Samsung Electronics 2-3

Warning 1 : First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a

conflict between the servicing and safety precautions, always follow the safety precautions.

Warning 2 : An electrolytic capacitor installed with the wrong polarity might explode.

2-3 Precautions for Electrostatically Sensitive Devices (ESDs)

1. Some semiconductor (“solid state”) devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs); examples include integrated circuits and some field-effect transistors. The following techniques will reduce the occurrence of component damage caused by static electricity.

2. Immediately before handling any semicon ductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. (Be sure to remove it prior to applying power— this is an electric shock precaution.)

3. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent accumulation of electrostatic charge.

4. Do not use freon-propelled chemicals. These can generate electrical charges that damage ESDs.

5. Use only a grounded-tip soldering iron when soldering or unsoldering ESDs.

6. Use only an anti-static solder removal device. Many solder removal devices are not rated as “anti-static”; these can accumulate sufficient electrical charge to damage ESDs.

7. Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive materials.

8. Immediately before removing the protective material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed.

9. Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or lifting a foot from a carpeted floor can generate enough static electricity to damage an ESD.

Precautions

2-4 Samsung Electronics

CAUTION

These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.

Specifications

Samsung Electronics 3-1

3. Specifications

Broadcasting System

Scanning System

Tuning Range

Antenna Impedance

Intermediate Frequency

Sound Output

Rated Voltage

W/B Coordinates

High Voltage

FUSE

Power Consumption

Dimension

Weight

NTSC

Progressive Scanning

VHF : CH2 ~ CH13

75 ohm Unbalanced

Video : 45.75 MHz

Sound : 42.25 MHz

Chrominance Subcarrier : 42.17 MHz

STD : 10W

MAX : 15W

120V / 60 Hz

Hx : 310 Hy : 325 Y : 11

Lx : 300 Ly : 295 Y : 0.3

29KV

250V/6.3A

CODE NO : 3601-000300

240W

1004 X 471 X 967mm

39.5 X 18.5 X 38.0 inches

40.4Kg 89lbs

MEMO

3-2 Samsung Electronics

Alignment and Adjustments

Samsung Electronics 4-1

4. Alignment and Adjustments

4-1 Service Mode

4-1-1 How to Enter and Exit Service Mode

1. Turn the Power ON and select “STANDARD” for the Screen Adjustment Mode.

2. Turn the Power OFF and put the set in Stand-By Mode.

3. Press these buttons sequentially to enter Service Mode : Mute_1_8_2 and Power. ♣ If you fail to enter Service Mode, try steps 1, 2 and 3 again.

4. After completing the adjustment, select Reset from Service Mode’s initial screen to exit Service Mode

and turn OFF the Power. After exiting, the user’s custom starting screen will be selected.

5. Any adjustable data changed will be automatically saved.

→ There is no separate “Save” key.

4-1-2 Initial Display in Service Mode

Deflection 480p offset 1080i offset Convergence & NR Video Adjust 1 Video Adjust 2 Video Adjust 3 Video Adjust 4 Video Adjust DNIe Option CHECKSUM0000 Reset

4-1-3 Button Descriptions for Service Mode

1. When RF Patterns are Displayed

MENU Full Menu Dispplay / Move to Parent Menu

Direction Keys ▲/▼ Item Selection by Moving the Cursor

Direction Keys œ/ √ Data Increase/Decrease for the Selected Item

4-1-4 Cautions Regarding service Mode

1. Do not adjust the fixed attributes, only the adjustables.

2. For adjustments of RF and 1080i Modes, switch to the respective input source and proceed with the

adjustments.

Alignment and Adjustments

4-2 Samsung Electronics

4-2 Factory Data

4-2-1 Deflection (RF)

* Do not change any fixed attributes

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

ITEM

V Amp

V Shift

H EW

H Shift

V LInearity

Upper LInearity

Lower LInearity

V SC

H Parabola

Upper Corner

Lower Corner

H Trapezium

Bow

Angle

V Position

CXA Left Blk

CXA Right Blk

Initial Value

31

32

31

32

6

7

8

3

10

32

45

25

Range

0 ~ 63

EEP-ROM Copy Data

RF-Mode

28

33

31

24

0

7

10

38

31

28

45

25

Remarks

Adjustable

*Fixed

Adjustable

*Fixed

Alignment and Adjustments

Samsung Electronics 4-3

4-2-2 480p Offset

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

ITEM

V Amp

V Shift

H EW

H Shift

V LInearity

Upper LInearity

Lower LInearity

V SC

H Parabola

Upper Corner

Lower Corner

H Trapezium

Bow

Angle

V Position

CXA Left Blk

CXA Right Blk

Initial Value

0

45

25

Range

-63 ~ 63

-15 ~ 15

-63 ~ 63

480p-Mode

0

45

25

Remarks

Adjustable

*Fixed

* Do not change any fixed attributes

Alignment and Adjustments

4-4 Samsung Electronics

4-2-3 1080i Offset

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

ITEM

V Amp

V Shift

H EW

H Shift

V LInearity

Upper LInearity

Lower LInearity

V SC

H Parabola

Upper Corner

Lower Corner

H Trapezium

Bow

Angle

V Position

CXA Left Blk

CXA Right Blk

Initial Value

0

50

25

Range

-63 ~ 63

-15 ~ 15

-63 ~ 63

1080i-Mode

0

-1

50

25

Remarks

Adjustable

*Fixed

* Do not change any fixed attributes

Alignment and Adjustments

Samsung Electronics 4-5

4-2-4 Convergence & NR

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

ITEM

Offset Enable

V AMp

V Shift

H EW

V Amp 1080i

V Shift 1080i

H EW 1080i

NR High Ref

NR Low Ref

NR Hight Value

NR Low Value

NR Hight Ref (s)

NR Low Ref (s)

NR Hight Value (s)

NR Low Value (s)

NR Read M/S

Initial Value

0

15

0

15

0

15

40

3

17

51

20

0

17

50

Range

0 ~ 1

-63 ~ 63

0 ~ 127

-128 ~ 127

0 ~ 127

-128 ~ 127

RF

0

5

0

5

0

5

40

3

17

51

17

0

17

50

Remarks

*Fixed

Read Price

* Do not change any fixed attributes

Alignment and Adjustments

4-6 Samsung Electronics

4-2-5 Video Adjust 1

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

Initial Value

25

1

32

25

15

7

21

8

1

3

1

207

111

211

Range

0 ~ 63

0 ~ 1

0 ~ 63

0 ~ 15

0 ~ 23

0 ~ 13

0 ~ 3

0 ~ 255

1080i

25

1

32

35

15

7

16

8

1

2

207

111

211

Remarks

Adjustable

*Fixed

Adjustable

*Fixed

Adjustable

*Fixed

Adjustable

*Fixed

Video Adjust 1

(RF/1080i is Separated)

R Cutoff

G Cutoff

B Cutoff

COLOR On/Off

CR Offset

CB Offset

R Drive

G Drive

B Drive

Sub Bright

Sub Contrast

Sub Color

Sub Tint

CTI Level

COL AXIS

LTI Level

9405 U-OUT

9405 Y-OUT

9405 V-OUT

ALL-Mode

(Except 1080i)

25

1

32

35

15

7

23

8

1

207

111

211

* Do not change any fixed attributes

Alignment and Adjustments

Samsung Electronics 4-7

4-2-6 Video Adjust 2

Video Adjust 2

(RF/1080i is Separated)

ABL mode

Gamma

DPIC Level (DNP)

DC Tran

ABL TH

VM Level

VM Coring

VM fo

VM Limit

VM Delay

SHP CD

SHP fo

SHP f1 & P/O

AKB Time

YC Delay

PIP YC Delay

BandPass 9407

HighPass 9407

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Initial Value

3

2

3

2

15

2

0

1

0

11

13

30

2

3

Range

0 ~ 3

0 ~ 15

0 ~ 3

0 ~ 1

0 ~ 15

0 ~ 31

0 ~ 7

1080i

3

1

2

15

3

0

1

0

1 (480p)

1

13

16

31

30

1

2

ALL-mode

(Except 1080i)

3

1

3

15 (ALL-mode)

3 (ALL-mode)

0

3 (Except 480p)

1 (ALL-mode)

0

13 (ALL-mode)

16

31

30

1

2

Remarks

*Fixed

* Do not change any fixed attributes

Alignment and Adjustments

4-8 Samsung Electronics

4-2-7 Video Adjust 3

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Video Adjust 3 (All Mode Equality)

Pilot Low

Pilot High

H Comp

V Comp

Pin Comp

AFC Comp

Sync Phase

NR Off Value

VSV

Melody Volume

Video Mute Time

S-ABL

P_ABL

PLIMT_LEV

AKB

CLP Gate

Color Kil

Real Time(Hour)

Initial Value

10

16

0

5

2

4

500ms

0

1

198

72

Range

16 ~ 127

0 ~ 15

0 ~ 7

0 ~ 1

0 ~ 9

0 ~ 15

0 ~ 20

0 ~ 1sec

0 ~ 3

0 ~ 2

0 ~ 1

0 ~ 255

ALL-mode

10

16

1

8

0

1

0

2

4

500ms

0

1

198

72

Remarks

*Fixed

* Do not change any fixed attributes

Alignment and Adjustments

Samsung Electronics 4-9

4-2-8 Video Adjust 4

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Video Adjust 4 (Only Indicated Modes)

System RF

System_VSD_480p

System_1080i

Shp_Fo_VSD_480p

HPF_VSD

BPF_VSD

Chrm_bdwth_RF

Chrm_bdwth_Video

Chrm_bdwth_Sviceo

Chrm_bdwth_DVD

IF_Comp_RF

IF_Comp_Video

IF_Comp_Svideo

IF_Comp_DVD

VM_Delay_480p

1E Data1 9405

1E Data2 9405

1E Data3 9405

Initial Value

1

5

1

28

30

28

2

4

5

4

1

15

14

Range

0 ~ 3

0 ~ 1

0 ~ 7

0 ~ 63

0 ~ 7

0 ~ 3

0 ~ 15

Only Indicated Mode

1

3

1

28

30

28

2

4

5

4

1

15

14

Remarks 2

*Fixed

Remarks 1

RF

VSD=AV/SV/DVD

1080i

480p

VSD=AV/SV/DVD

RF

Video

S-Video

DVD

RF

Video

S-Video

DVD

480p

All-Mode

* Do not change any fixed attributes

Alignment and Adjustments

4-10 Samsung Electronics

4-2-9 Video Adjust DNIe

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

ITEM

9883 Cr Offset

9883 Y Offset

9883 Cb Offset

NR Scale Max

NR Scale Min

NR Sel

CE Cutoff

CE Upper

CE Gain

CE HPF Gain

DCE Gain

CTI Gain

DEP TH Cor

DEP OV Gain H

DEP R INT

CTE Gain

Initial Value

0

1080i

0

Remarks

*Fixed

Range

0 ~ 127

0 ~ 255

0 ~ 3

0 ~ 255

0 ~ 15

0 ~ 63

0 ~ 255

0 ~ 127

0 ~ 255

RF

0

AV/SV/480i/480p

0

* Do not change any fixed attributes

Alignment and Adjustments

Samsung Electronics 4-11

4-2-10 Option

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Option

(61h 50h)

CRT

PIP

3D-COMB Filter

Blue Screen

BBE Effect

Auto Power On

System

Virtual Dolby

ACS

V Chip (CT, CTA)

V Chip Area

Sub Woofer

No Sync Mute

AGC

Turbo Effect

Burst Screen

LNA

Initial Value

4 : 3

On

Off

On

CT

Off

On

USA

Off

On

Off

Range

Wide ↔ 4 : 3

On ↔ Off

CT(EN+SP+FR)

CT-A(EN+SP+FR)

On ↔ Off

USA

On ↔ Off

Mexico / South Central America

42”, 47” 52”

Wide

Off

On

CT(EN+SP+FR)

Off

USA

Off

On

Off

On

North America

42”, 47” 52”

Wide

Off

On

CT(EN+SP+FR)

Off

On

USA

Off

On

Off

On

MICOM NAME : T_OMGNUS_xxxx OPTION-BYTE

Alignment and Adjustments

4-12 Samsung Electronics

4-3 Screen Change (When adjusting I2C Bus Geometric items)

1 V SHIFT

2 V LINEARITY

3 H SIZE

6 V SIZE

7 VSC

8

H Trapezium

4

H Parabola

5 ANGLE

9 H SHIFT

10 BOW

Alignment and Adjustments

Samsung Electronics 4-13

4-4 Other Adjustments

4-4-1 Screen Adjustment

1. Warm up the TV for at least 30 minutes.

2. Select the “STANDARD” Video mode.

3. Turn to the Video Mode (No Signal) using a

remote-control.

4. Connect an oscilloscope to RK,GK,BK.

5. Adjust the VR Screen (in the Focus Pack) to

have 20VP-P for the RK, GK and BK pulse. (Turn the R,G and B VR screen fully counterclockwise at each flyback line.)

* Voltage adjustment connt be done using a

normal multi-tester. For adjustment, use an oscilloscope. The voltage shown by the tester is false data because the AC peak to peak voltage is adjusted under DC conditions.

4-4-2 White Balance Adjustment

1. Select the “STANDARD” video mode.

2. Input 100% white pattern.

3. In the stand-by mode, press the remote-control

keys in the following sequence:

4. Warm up the TV for at least 30 minutes.

5. Input a 10-step signal.

6. R-cut off, B-cut off, and G-cut off by pressing

the keys.

7. Adjust the low light with viewing the dark

side of the screen.

8. Select R-drive, G-drive, and B-drive by

pressing the keys.

9. Adjust the high light with viewing the light

side of the screen.

10. If necessary, redo screen adjustments and 6~9.

11. Press the Add key to exit.

4-4-3 Sub-Brightness Adjustment

1. Input a sub-brightness adjustment signal. (TOSHIBA PATTERN)

2. In the stand-by mode, press the remote-control keys in the following sequence :

3. Select SBT by pressing the keys.

4. Adjust so that the 63 step on the right side of the screen is not seen (Use the keys).

5. Press the Menu key to exit.

MUTE POWER

→→→→

ENTER

MUTE POWER

→→→→

ENTER

Alignment and Adjustments

4-14 Samsung Electronics

4-4-4 Static Focus Adjustment

PRECAUTION

1. Select the “STANDARD” video mode.

2. Input a crosshatch pattern.

3. Cover the lenses that are not being adjusted.

4. Adjust the lens for best focus. (See Fig, 2-1)

STATIC FOCUS (CONTINUED)

Vary the focus pack VR (Red, Blue) on the front cabinet. Adjust the TV for best possible focus around the center of the crosshatch pattern, without losing overall screen balance. Figure Crosshatch Pattern Examine these points together.

4-4-5 Lens Focus Adjustment

1. Preparation

! Set the Screen to “STANDARD”.

Contrast : 100 Brightness : 50

@ Set the pattern to Crosshatch.

# Adjust the electric focus before beginning.

$ Adjust the DY tilt (TILT) before beginning.

2. How to Adjust (Green Lens Adjustment)

! Loosen the lens screw for easier

adjustment.

@ Press Mute, 1, 8 and 3, sequentially to enter

Convergence Mode.

# Display only the Green pattern by using

the +100, 0, and Previous Channel Keys in order to turn the R, G, and B patterns On/Off respectively.

$ Turn the Green Lens

clockwise/Counterclockwise to adjust for optimum status. (Repeat if unsuccessful, varying the VR of

the front Focus Pack.)

% Perform steps 1~3 for the R and B Lenses.

3. Note Green determines picture quality; pay close attention for exact adjustment.

P

L1

<_

L1, L2 P

L2

Red Chromatic Number

Blue Chromatic Number

Fig. 2-2 Color Aberration

Fig. 2-1 Crosshatch Pattern.

Examine these points together

Alignment and Adjustments

Samsung Electronics 4-15

1. Select the “STANDARD” video mode.

2. Warm up the set at least for 10 minutes.

3. Enter the Convergence mode by pressing the remote control buttons in the following sequence :

4. Set the Beam Alignment Adjustment CY to Zero magnetic field area.

5. Check the squarewave at the point where the focus is misaligned (Use an audio oscillator).

6. Press the button on the remote control, and a vibrating dot-pattern appears.

7. Adjust the Focus-pack VR for defocusing.

8. Mute the other patterns (R/B) other than G-PATTERN. (Use / buttons on the remote control.)

9. Adjust the 2, 4 polarities of VM-COIL as shown in figure below.

10. Adjust the G-Focus until any light around the core disappears.

11. Adjust G-Focus so that the surrounding flash can disappear from the spot.

12. After G-Focus adjustments are complete, adjust R-Focus as above procedures.

13. The B-CRT adjustments can be omitted because the variance of beam focus is small. (Only Vm-coil is mounted.)

14. Adjust the Focus-pack VR for fine focusing.

15. Press the button on the remote control, and the mode changes to the Convergence Adjustment mode.

16. Press the button on the remote control to return to normal viewing.

4-5 Beam alignment Adjustments

MUTE

PIP

PRE-CH

PIP

S.MODE

(Creation of CPM Zero Magnet)

(Creation of the 2-pole/4-pole zero magnets)

G-FOCUS

CORE

Varying the 2-pole of VM

G-FOCUS

(Varying G-Focus Pack)

CORE

(Positioning the Core in the Center)

Varying the 4-pole of VM

(When VM 2-Pole Adjustment is completed)

(Adjust until the light around

Alignment and Adjustments

4-16 Samsung Electronics

4-6 Convergence-Jig

4-6-1 4241W RF Mode

4-6-2 4241W DTV Mode

♣ The DTV Mode Adjustment is available only when a Set-top Box is connected.

4241W

Screen Siz e : X 92 5 , Y 523 (X: 378 =9*2 + 30*12 , Y :4 40=28* 2+64* 6)

33.28mm

76.07mm

33.28mm

22.02mm 73.41mm

22.02mm

4241W

Screen Siz e : X 92 5 , Y 523 (X: 396 =12*2 + 31* 1 2, Y : 488= 40*2+68* 6)

42.87mm

72.88mm

42.87mm

28.03mm 72.41mm

28.03mm