Samsung SP47W3HF1X-BOB, SP42W4HBX-XEU Service Manual

PROJECTION TV RECEIVER

Chassis : J54A(P) C2.0 Model: SP47W3HF1X/BOB

SP42W4HBX/XEU

PROJECTION TV RECEIVER CONTENTS

Alignment and Adjustments

Exploded View and Parts List

Electric Parts List

PCB Diagrams

Schematic Diagrams

Exploded View & Parts List

Samsung Electronics 2-1

No Code No Description Specification Q’ty Remark S.N.A 1 0203-001329 TAPE-OPP MASKING;ANT-300P,T0.07,W15.0,L5 4

2 AA60-00132A SPACER-COVER,DUST;DP,W3,T0.5,60-00123B 1 3 AA61-00617B BRACKET-CRT,MAIN;DP,54J7,AA61-00475B 1 4 AA61-00618C GUIDE-FLOW;54J8,J7,ABS,IVORY,V0 1 5 AA61-00971A HOLDER-SCREEN,TB;47H1,ABS HB,GRAY 1 6 AA64-02336A CABINET-BACK,BOT;W3,HIPS,V0,BLK 1 7 AA64-02224B CABINET-BACK,TOP;DP,47W3,HIPS HB,BLK,64- 1 8 AA64-02225B CABINET-BACK,SIDE;DP,47.55W3,HIPS HB,BLK 2 9 AA67-00196A AA95-00714B70*612,T=0.73,P=0.52 1 10 AA67-00196C SCREEN-FRESNEL;47W,1072*614,T=1.6,DNP-D 1 11 AA67-00136A SUN SCREEN-AG;47W,-,T=82%,1072*614*2,-,- 1 12 AA67-00165A MIRROR-FRONT;47W3,GLASS ,861*677*421,FS 1 14 BP91-00245W ASSY CHASSIS;SP47W3HF1S/XEF,J54A,C2.0 1 15 AA91-00824E ASSY-C/FRONT,MASK;DP,02058F 22KG,47W3 1 16 AA91-00774E ASSY-DOOR,RACK;DP,W3,HB GRAY,64-02066 1 17 BP96-00103B ASSY CABINET WOOD; PJTV 47 C2.0 1 18 BP94-00239A ASSY PCB MISC-DY-JACK;DP,HCM4215W3S/XAA, 1 19 AA91-00775J ASSY-C/FRONT,BOT;DP,64-02063Q,47W3 1 20 AA91-00766A ASSY-CENTER,SPK;,W3 1

You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.kr

2. Exploded View & Parts List

2-1 SP47W3HF1X/BOB

Exploded View & Parts List

2-2 Samsung Electronics

o Code No Description Specification Q’ty Remark S.N.A 1 BP91-00006N ASSY-FRONT,MASK;,HIPS HB,G4309,SV012P,42 1 T0017

2 AA64-02724A CABINET-WOOD;42W5,WOOD,SDE8336R 1 S.N.A 3 SUN SCREEN 1 4 AA67-00193A SCREEN-TINT;42W,958*550,T=0.7,P 1 T0056 5 AA67-00193B SCREEN FRESNEL;42W,960*552,T=2.0 1 T0053 6 BP64-00177A BADGE-BRAND;ALL,AL,T1.5,70,11.3,BLK,SILI 1 T0057 S.N.A 7 BP59-00005A MODULE-FOCUS PACK ASS’Y;PJT TV,F301-P03A 1 T0103 8 BP91-00463A ASSY PRT;SP42W5HPX/XEU,J54A 1 S.N.A 9 BP64-00077A KNOB POWER;42W4,ABS HB G3676 1 T0023 10 AA61-60003J SPRING ETC-CS;-,SUS304,-,-,OD6,N7,OD6,-, 1 CIS7 S.N.A 11 BP64-00095A CABINET-PANEL-CONTROL;42W4,HIPS,HB,G4309 1 S.N.A 12 BP64-00078A WINDOW REMOCON-LED;42W4,PC,42W4,PC,CLEAR 1 S.N.A 13 BP64-00076A KNOB CONTROL;42W4,ABS HB G3676 1 T0022 S.N.A 14 6003-001019 SCREW-TAPTITE;RH,+,B,M4,L12,ZPC(BLK),SWR 4 T0081 15 BP61-00108A GUIDE-KONB,CONTROL;42W4,G3676,42W4,ABS H 1 S.N.A 16 AA64-02725B CABINET-FRONT,BOT;42W5,HIPS,HB,G4309,SV0 1 T0016 17 AA64-02743A BADGE-DECORATION;42W5,AL,NI,RS 1 T0165 18 AA61-01128C HOLDER-SIDE AV;42W5,ABS HB,G3676,SV-704P 1 S.N.A 19 AA64-02780C DOOR-AV;42W5,ABS HB,G3676,SV-704P 1 T0150 20 AA61-01132A VELCRO-A;COMMANDO,BST1 1/4H 3 S.N.A 20 AA61-01132A VELCRO-A;COMMANDO,BST1 1/4H 1 S.N.A 21 AA61-01133A VELCRO-B;COMMANDO,BST1 1/4H 1 S.N.A 21 AA61-01133A VELCRO-B;COMMANDO,BST1 1/4H 3 S.N.A 22 6003-001019 SCREW-TAPTITE;RH,+,B,M4,L12,ZPC(BLK),SWR 1 T0081 24 6003-001026 SCREW-TAPTITE;RH,+,B,M4,L15,ZPC(BLK),SWR 7 T0081 S.N.A 25 AA67-00204B MIRROR-BACK;42W5,SSM,870*633*446 1 T0108 26 AA61-01123A BRACKET-MIRROR;42W5,SECC,T1.0 1 S.N.A 27 6003-001026 SCREW-TAPTITE;RH,+,B,M4,L15,ZPC(BLK),SWR 4 T0081 S.N.A 28 AA64-02728A CABINET-BACK,TOP;42W5,HIPS,HB,G4309 1 T0112 29 6005-001003 SCREW-WOOD;HH,+,M4,L19,ZPC(BLK),SWRCH18A 3 HC+CW S.N.A 30 BP96-00038C ASSY COVER P-TERMINAL,ANT;42W5,HIPS VO,B 1 T0092 S.N.A 31 6003-001026 SCREW-TAPTITE;RH,+,B,M4,L15,ZPC(BLK),SWR 2 T0081 S.N.A 32 BP91-01004A ASSY CHASSIS;SP42W4HBX/XEU,P55A 1 M0017 33 AA60-00072B SPACER-COVER,DUST;43,54,62J9,SPONGE 94HF 1 S.N.A 34 BP61-00120A BRACKET-SCREEN,ASSY(R);42W5,SECC,T1.0,SC 1 S.N.A 35 BP61-00117B BRACKET-SCREEN,ASSY(TOP);42W5,SECC,T1.0, 1 S.N.A 36 BP61-00122A BRACKET-SCREEN,ASSY(L);42W5,SECC,T1.0,SC 1 S.N.A 37 BP61-00119B BRACKET-SCREEN,ASSY(BOT);42W5,SECC,T1.0, 1 S.N.A 38 AA60-10011A SCREW-TAPTITE;-,SWRCH18A,M4,L12,HH,+,PC, 20 T0081 S.N.A 39 BP64-00029A INLAY-SUPPORT;42W5,PS SHEET,T0.5,94V0 1 S.N.A 40 6005-001003 SCREW-WOOD;HH,+,M4,L19,ZPC(BLK),SWRCH18A 2 HC+CW S.N.A

You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.kr

2-2 SP42W4HBX/XEU

Alignment and Adjustments

Samsung Electronics 1-1

1. Alignment and Adjustments

1-1 When entering the service mode;

1. Turn on the TV, and then select “DYNAMIC” on the picture adjustment mode.

2. Turn off the TV(STAND-BY).

3. Enter the service mode by pressing the remote control keys in the following sequence: Display -> Menu -> Mute -> Power ON

Note : If necessary, re-do steps 1~3. Initial display when the service mode is switched.

1-1-1 WHEN A RF SIGNAL IS RECEIVED

1-1-2 SERVICE MODE CONTROL KEYS

✍

PRECAUTIONS

1. When EEPROM IC (IC902) is replaced, first connect the power cord and wait for about 4~5 seconds.

2. After replacing EEPROM IC (IC902), enter the Service mode. Next, enter the standard data or the previous EEPROM IC data before replacement. And then check and adjust any items related to Geometric, Picture, Option.

DEFLECTION VIDEO ADJUST 1 VIDEO ADJUST 2 VIDEO ADJUST 3 VIDEO ADJUST 4 OPTION (87h 05ch) YC DELAY RESET T_CM2906_002 yy.mm.dd

MAIN MENU

UP / DOWN

RIGHT / LEFT

MENU DISPLAY

Select item by moving cursor

Decrease or increase the adjustment values

[Navigation Key]

MODEL((T_CM2P06_002)

DEFLECTION VIDEO ADJUST 1 VIDEO ADJUST 2 VIDEO ADJUST 3 VIDEO ADJUST 4 OPTION (EF 8E 2E) YC DELAY RESET T_CMDEAC_XXX yy.mm.dd

MODEL(T_CMDEAC_XXX)

Alignment and Adjustments

1-2 Samsung Electronics

1-2 FACTORY MODE MENU

1-2-1(A) DEFLECTION

V Amp V Shift H EW H Shift V Linearity Upper Linearity Lower Linearity V SC H Parabolra Upper Corner Lower Corner H Trapezium Bow Angle V Position Up UCG Lo UCG CXA Left Blk CXA Right Blk

39 31 31 31 44 31 31 31

7 0 0

7 25 31 37 31 33 31

31 31 31 31

50 25

Item Range

Initial Data

4:3 Wide 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 15 0 ~ 15 0 ~ 15 0 ~ 15 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 3 0 ~ 3 0 ~ 63 0 ~ 63

Remark

Variable

FIX

Variable

FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX

1-2-1 MODEL(T_CM2906_002)

Alignment and Adjustments

Samsung Electronics 1-3

1-2-1(B) VIDEO ADJUST1

R Cutoff G Cutoff B Cutoff Color On/Off CB Offset CR Offset R Drive G Drive B Drive Sub Bright Sub Contrast Sub Color Sut Tint CTI Level COL Axis LTI Level VSU Melody Volume LIT Mode System

25 25 25

1 31 31 25 25 25 15

3 31

Item Range

Initial Data

0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 1 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 15 0 ~ 23 0 ~ 63 0 ~ 3 0 ~ 3 0 ~ 3

0 ~ 15

0 ~ 20 0 ~ 3 0 ~ 3

Remark

Variable

FIX Variable Variable Variable Variable Variable

FIX Variable Variable Variable

FIX

Alignment and Adjustments

1-4 Samsung Electronics

1-2-1(C) VIDEO ADJUST2

ABL Level Gamma DPIC Level DC Trans ABL TH VM Level VM Corint VM f0 VM Limit VM Delay SHP CD SHP f0 SHP f1 & P/O AKB Time BandPass 9407 HighPass 9407 S ABL P ABL

3 1 2 3

1 0 1 1 1 0

1 11 13 24 40

0 15

Item Range

Initial Data

0 ~ 3 0 ~ 3 0 ~ 3 0 ~ 3 0 ~ 15 0 ~ 3 0 ~ 15 0 ~ 3 0 ~ 3 0 ~ 3 0 ~ 3

0 / 1

0 ~ 63

0 ~ 3 0 ~ 15

Remark

FIX FIX

FIX FIX FIX FIX FIX FIX FIX FIX

FIX FIX

Alignment and Adjustments

Samsung Electronics 1-5

1-2-1(D) VIDEO ADJUST3

H Comp V Comp Pin Comp AFC Comp H-Sync Phase NR Off Value CG HAO CG VAO NR High Ref NR Low Ref NR High Value NR Low Value NR Hight Ref(S) NR Low Ref(s) NR High Value(S) NR Low Value(S) NR Read M/S

8 13 5 12

0 0 0

6 10 15 40

3 17 51 20

0 17 51

0 0

Item Range

Initial Data

4:3 Wide 0 ~ 15 0 ~ 15 0 ~ 7 0 ~ 7

0 / 1 0 ~ 9 0 ~ 20

0 ~ 20 0 ~127 0 ~127 0 ~255 0 ~255 0 ~127 0 ~127 0 ~255 0 ~255

0/27

Remark

FIX

Alignment and Adjustments

1-6 Samsung Electronics

1-2-1(E) VIDEO ADJUST4

SECAM Color Main SECAM Color Pip Picture Limit OSD Contrast TTX Contrast

28 28

Item Range

Initial Data

0 ~255 0 ~255 0 ~ 3 0 ~ 15 0 ~ 15

Remark

FIX

1-2-1(F) OPTION

SYSTEM SOUND ASPECT WIDE 4:3 X-RAY AUTO FM PIP LNA Letter Box TTX Lang.Grp AGC Natural Zoom

CW CS

Dolby Prlogic

ON ON ON ON ON

OFF OFF

Item Setting Data

Appliance

CW CS

CS/CW

A2-NICAM/Dolby-Prologic

WIDE / 4:3

ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF

West/East/CIS/Turk&Grk

ON/OFF ON/OFF

Area Option

Inch Option Inch Option

Area Option

Remark

Alignment and Adjustments

Samsung Electronics 1-7

1-2-1(G) YC DELAY

P.YC(AV) Delay S.YC(AV) Delay N.YC(AV) Delay P.BG.YC Dealy P.DK.YC Delay P.I.YC Delay P.M.YC Delay P.N.YC Delay S.BG.YC Delay S.DK.YC Delay S.I.YC Delay S.M.YC Delay S.L.YC Delay N.M.YC Delay N4.43 YC Delay

Item Range

-5 1 1

-2 0 0 0

-7

-9

-7

-10 3

-6

Alignment and Adjustments

1-8 Samsung Electronics

1-2-2(A) DEFLECTION

V Amp V Shift H EW H Shift V Linearity Upper Linearity Lower Linearity V SC H Parabolra Upper Corner Lower Corner H Trapezium Bow Angle V Position Up UCG Lo UCG CXA Left Blk CXA Right Blk

48 31 48 24

7 0 0

2 15 33 33 18 31 31 31

0 50 25

48 31 48 24

7 0 0

2 15 33 33 18 31 31 31

0 50 25

48 31 48 24

7 0 0

2 15 33 33 18 31 31 31

0 50 25

48 31 48 24

7 0 0

2 15 33 33 18 31 31 31

0 50 25

48 31 48 24

7 0 0

2 15 33 33 18 31 31 31

0 50 25

48 31 48 24

7 0 0

2 15 33 33 18 31 31 31

0 50 25

48 31 48 24

Item Range

Initial Data

0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 15 0 ~ 15 0 ~ 15 0 ~ 15 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 3 0 ~ 3 0 ~ 63 0 ~ 63

Remark

Variable

FIX

Variable

FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX

1-2-2 CS MODEL(T_CMDEAC_XXX)

42W5

NTSC PAL

47W1

NTSC PAL

43T6/43T7

NTSC PAL

48T6

NTSC PAL

54T6

NTSC PAL

62T6

NTSC PAL

Alignment and Adjustments

Samsung Electronics 1-9

1-2-2(B) VIDEO ADJUST1

R Cutoff G Cutoff B Cutoff Color On/Off CB Offset CR Offset R Drive G Drive B Drive Sub Bright Sub Contrast Sub Color Sut Tint CTI Level COL Axis LTI Level VSU Melody Volume LIT Mode System

20 20 20

1 31 31 31 31 31 20

8 15 31

Item Range

Initial Data

0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 1 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 15 0 ~ 23 0 ~ 63 0 ~ 3 0 ~ 3 0 ~ 3

0 ~ 15

0 ~ 20 0 ~ 3 0 ~ 3

Remark

Variable Variable Variable

FIX Variable Variable Variable Variable Variable Variable Variable

FIX

Alignment and Adjustments

1-10 Samsung Electronics

1-2-2(C) VIDEO ADJUST2

ABL Level Gamma DPIC Level DC Trans ABL TH VM Level VM Coring VM f0 VM Limit VM Delay SHP CD SHP f0 SHP f1 & P/O AKB Time BandPass 9407 HighPass 9407 S ABL P ABL

3 1 3 2

2 0 1 1 1 0

1 11 13 24 40

0 15

Item Range

Initial Data

0 ~ 3 0 ~ 3 0 ~ 3 0 ~ 3 0 ~ 15 0 ~ 3 0 ~ 15 0 ~ 3 0 ~ 3 0 ~ 3 0 ~ 3

0 / 1

0 ~ 63

0 ~ 3 0 ~ 15

Remark

FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX

Alignment and Adjustments

Samsung Electronics 1-11

1-2-2(D) VIDEO ADJUST3

H Comp V Comp Pin Comp AFC Comp H-Sync Phase NR Off Value CG HAO CG VAO NR High Ref NR Low Ref NR High Value NR Low Value NR Hight Ref(S) NR Low Ref(s) NR High Value(S) NR Low Value(S) NR Read M/S

2 4 3 0 0

6 10 15 40

3 17 51 20

0 17 51

0 0

Item Range

Initial Data

0 ~ 15 0 ~ 15 0 ~ 7 0 ~ 7

0 / 1

0 ~ 20 0 ~ 20 0 ~127 0 ~127

0 ~127 0 ~127

Remark

FIX

1-2-2(E) VIDEO ADJUST4

SECAM Color Main SECAM Color Pip Picture Limit OSD Contrast TTX Contrast

28 28

Item Range

Initial Data

0 ~255 0 ~255

0 ~ 3 0 ~ 15 0 ~ 15

Remark

FIX

Alignment and Adjustments

1-12 Samsung Electronics

1-2-2(F) OPTION

LANGUAGE

SOUNG

CRT

CHANNEL

X-LAY TTX AUTO FM PIP MULTI PIP LNA HIGH DEV SCART LETTER BOX DW PIP

LIST PRIOR

TTX LANG

AGC AV MEMORY AUSTRALIA CG BRIGHT

ONLY ENG

ENG+THAI(Thailand)

Dolby Prologic

4:3(Option)

100-channel

ON ON ON

2-TUNER

ON ON

OFF

RCA+1SCART+DVD

ON ON

OFF

0N(AUSTRALIA)

WEST EUROPE

OFF/0N(Thailand)

OFF OFF OFF

Item Setting Data

Appliance

(Southeast Asia)

ENG+CHINA

Dolby Prologic

4:3(Option)

200-channle

OFF

2-TUNER

ON ON

OFF

RCA+DVD

ON ON

OFF

WEST EUROPE

OFF OFF OFF OFF

Appliance

(CHINA)

ENG+MIDDLE

Dolby Prologic

4:3(Option)

250-channle

ON ON ON

2-TUNER

ON ON

OFF

RCA+1SCART+DVD

ON ON

OFF

ARABIC

OFF OFF OFF OFF

Appliance

(Middle East)

ENG+THAI / ENG+CHINA

ENG+MIDDLE / ONLY ENG

A2-NICAM/Virtual Dolby

/Dolby Prologic

WIDE / 4:3

100-channel / 200-channel

/250-chanel

OFF / ON OFF / ON OFF / ON

OFF / 2-TUNER

OFF / ON OFF / ON OFF / ON

RCA+1SCART+DVD / RCA+DVD

OFF / ON OFF / ON

OFF / ON

WEST EUROPE / EAST EUROPE

RUSSIAN / GREEK-TURKEY

ARABIC / FARSI / AREB-HEBREW

OFF / ON OFF / ON OFF / ON

OFF/ON

Alignment and Adjustments

Samsung Electronics 1-13

1-2-2(G) YC DELAY

Item Range

-5 1 1

-2

-2 0 0

-7

-10

-9

-7

-10 3

-1

Alignment and Adjustments

1-14 Samsung Electronics

1-3 Screen Change (When Adjusting I2C Bus Geometric Items)

1 V AMP

2 V SHIFT

3 H EW

6 V - S - CORRECTION

H Parabolra

H Trapezium

4 H SHIFT

5 V LINEARITY

9 BOW

10 ANGLE

Alignment and Adjustments

Samsung Electronics 1-15

1-4 Other Adjustments

1-4-1 Screen Adjustment

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

2. Select the “DYNAMIC” Video mode.

3. Trun to the Video Mode(No Signal) using a remote-control.

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

5. Adjust the VR (VR501, VR531, VR561) screen so that RK, GK, BK pulse is 20Vp-p each. (Turn the R,G,B VR screen fully counterclockwise in the area of each flyback line.)

1-4-2 White Balance Adjustment

1. Select the “DYNAMIC” video mode.

2. Input 100% white pattern.

3. In the stand-by mode, press the remote-control keys in the following sequence: Displsy → Menu → Mute → Power ON

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 Volume +/- 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 Volume +/- keys.

9. Adjust the high light with viewing the light side of the screen.

10. If necessary, redo adjustments 6~9.

11. Press the Menu key to exit.

1-4-3 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 : Displsy → Menu → Mute → Power ON

3. Select Sub-Bright by pressing the Volume +/keys.

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

5. Press the Menu key to exit.

1-4-4 High Voltage (29KV) Check

PRECAUTION

1. Input a lion head pattern.

2. Select “DYNAMIC” video mode.

3. Warm up the TV for at least 10 minutes.

4. Use a 1000:1 probe.

ADJUSTMENT

1. Connect the (+) terminal of the 10000:1 probe to the high voltage distributor and the(-) terminal to GND(located on the deflection board).

2. Adjust RR471S (located on the deflection board) so that the digital meter indicates DC290V ± 0.1V.

4-4-5 F.S. (Fail Safe) Circuit Check

Note : The finished product has a well-mounted

VR(RR402S).

If necessary, do the F.S adjustments in the following sequece.

1. Use a digital multimeter.

2. Connect the digital multimeter to the JIG pin (DZ482S) terminals.

3. Adjust VR(RR402S) so that the voltage becoms

2.25V.

4. After the adjustments are complete be sure to mount VR(RR402S) correctly.

Alignment and Adjustments

1-16 Samsung Electronics

1-4-6 Static Focus Adjustment

PRECAUTION

1. Select the “DYNAMIC” video mode.

2. Input a crosshatch pattern.

3. Cover the lenses that are not being adjusted.

4. Connect a convergence jig and read data.

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

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.

1-4-7 Lens Focus Adjustment

PRECAUTIONS

1. Do this adjustment after the static focus adjustment and the tilt adjustment.

2. Select the “DYNAMIC” video mode. (Contrast:100, Brightness:50)

3. Input a crosshatch pattern.

ADJUSTMENT

1. Loosen the lens screws.

2. Cover the two lenses that are not being adjusted.

3. Adjust the lens, observing the color aberration vertically and horizontally within 3 blocks of the center of the crosshatch pattern.

4. When the lens is turned clockwise, the color aberration will change as follows:

Lens Color

Aberration Change R Orange - Crimson G Blue - Red B Purple - Green

5. Green lens adjustment: Set the lens at the point where Blue just changes to Red. If the color aberration is irregular throughout the picture screen, adjust the lens to show Red color aberration (approximately 1~3 mm area) within a 3-block grid around the horizontal center-line. If the color aberration is irregular, adjust the lens as shown in the diagram below. (Accurate alignment of Green is important for overall color quality.)

6. Red lens adjustment Set the Red lens at the point where Orange becomes Crimson.

7. Blue lens adjustment Set the Blue lens at the point where Purple becomes Green.

RED ABERRATION

BLUE ABERRATION

L1, L2 < P

Fig. 4-1 Crosshatch Pattern.

Examine these points together

Fig. 4-2 Color Aberration

Alignment and Adjustments

Samsung Electronics 1-17

1. Select the “DYNAMIC” 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.

6. Press the button on the remote control during 3~5 sec and 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.

1-5 Beam alignment Adjustments

Mute

(Creation of CPM Zero Magnet)

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

G-FOCUS

(Varying G-Focus Pack)

G-FOCUS

(When VM 2-Pole Adjustment is completed)

CORE

Varying the 2-pole of VM

Varying the 4-pole of VM

(Positioning the Core in the Center)

(Adjust until the light around the core becomes a circle)

S.STD

Alignment and Adjustments

1-18 Samsung Electronics

1-6 High Voltage Part

1-6-1 PWM REG Circuit

For the existing high voltage REG circuit (input voltage variation type), a dynamic REG response is not provided. So it is difficult for both beam linearity and uniformity in screen size to be maintained on the screen with rapidly changing beams.

A PWM (Pulse Width Modulation) type of high voltage, however, provides the maintenance of beam linearity and uniformity in screen size via a quick response to beam change by performing sync lock every 1H line, and detecting beam fluctuation at 1H line, and then controlling the IC current of high voltage output circuit.

1. High Voltage Fluctuation Detect (DC Detect)

FBT pin 11 detects DC high voltage fluctuation. The detected DC high voltage value is input to PWM IC471 pin1 through R473, VR471, R471, and then it is input to a differential AMP circuit that differentiates the gap after comparing with the reference voltage input to pin2.

2. High Voltage Fluctuation Detect (AC Detect)

To check AC high voltage fluctuation, the output from FBT is detected by using a capacitor inside the high voltage distributor. The detection of AC high voltage fluctuation, a detection of dynamic beam current change is required in order to keep beam linearity and uniformity in size. Regarding the capacitor, a capacity of less than 3000P should be applied to a PWM type. (The existing type needs a capacity of about 6000P.) AC detect circuit eliminates unnecessary high frequency by using C476, D472. Also, AC gain is limited to + / - 0.7V (D472). This AC gain is combined with the detection value of DC high voltage fluctuation by using C478.

3. PWM IC OSC Sync Lock

A PWM type IC needs sync lock for PWM pulse and horizontal scan line. The standard time constant of OSC circuit is determined by C487, R475 (PWM IC pins 5 and 6). And the standard OSC frequency is about 27 kHz . The horizontal frequency of scan line is

31.5kHz(NT), 31.25kHz(PAL), so sync lock for this horizontal frequency should be performed using sync lock circuit. The sync lock circuit consists of Q481(Tr KSC815-Y), D479, D478, and C492. The input AFC signal is connected to PWM IC pin 5 through D479 so that it can be negative Trig.

4. Dead Time (HV Protect)

Dead Time (PWM IN pin4) consists of C481, delays high voltage for a certain time to soft start in power on, a x-ray protection circuit. The voltage of Dead Time is detected by FBT pin7 and through DC Feedback. The normal voltage of Dead Time is +27V. When high voltage increases, however, detected voltage is in proportion to high voltage. Then, the detected voltage is applied to ICR01S(TL431). If the voltage is over 2.5V (normal:about 2.25V), TL431 turns ON, the base port of QR401S becomes low, and then an emitter current flows. At this time, a high voltage protection point is set. When QR401S turns ON, high voltage is applied to PWM IC pin4 and then muted.

OSC : 27KHz

AFC Waveform : 31.5KHz(NT)

Locked OSC Waveform : 31.5KHz

Alignment and Adjustments

Samsung Electronics 1-19

5. Output Circuit

The voltages, which are detected form an error detection circuit of PWM IC (Differential AMP) and Dead Time, each is applied to PWM conparator . Due to these detection coltages, Q1, Q2 (Output TR) parallel operate. Q482 (External TR), however, functions as a buffer; natches inpedance between the output port of PWM IC and the final output TR(IRFS640). The PWM pulse (applied to the final output FET (IRFS640 GATE) varies the IC current of high voltage TR(Q473) by adjusting the load impedance of starage Trans (T431). Due to this variation of current, the gain for Q473 emitter pulse changes T444(FBT)makes this emitter pulse became high voltage. Such change keeps both dynamic and static changes fixed. The output waveform of high valtage TR emitter is as shown in the figure below.

6. Paraneters according to beam

To maintain the set high voltage value (31kV), parmaters such as +Ve (DC), Vcp High Voltage change (See the table below).

7. Response Waveform

To reduce unstable high voltage fluctuation, the existing high voltage type REG circuit controls dynamic fluctuation by using C-block capacitor. But, it can't detect actual dynamic fluctuation. Also, its velocity of response to static fluctuation is late because +B power supply changes per

about 1V. APWM modulation type REG detects static, dynamic high voltage fluctuation for only Ton Time (when the current of the output TR collector flows) each 1H, and modulates the width of PWM pulse. So, this PWM type has better improvement in the characteristic of high voltage REG as compared to the existing type.

8. Application Effects

1) Improvement of horizontal size fluctuation

2) Linearity improved

3) Embodiment of X-ray protection circuit

The figures below show characteristics when a PWM high voltage REG circuit is applied.

Beam

(High voltage )

Factor of high

voltage change

Beam

(High voltage )

Width of FET

Gate Pulse

+ Ve (DC)

Vcp

High

Voltage

Parameters

High Voltage Drive Base Current

PWM Input Waveform of FET GATE

GND

PWM Variation tange

Ton Toff

Beam

High Voltage

High Voltage OFF High Voltage REG ON

BLACK

WHITE

When a Toshiba Pattern is recrived, the screen is displayed as shown in figute side

Existing type

PWM type

Alignment and Adjustments

1-20 Samsung Electronics

1-6 SCREEN-JIG

1-6-1 42W5

1-6-2 47W3

42W5 Screen Size : X 932, Y 524 (X:764 = 22 x 2 + 60 x 12, Y:262 = 17 x 2 + 38 x 6)-PAL MODE

26.84mm 73.19mm

34.00mm

76.00mm

34.00mm

26.84mm

47W3 Screen Size : X 1045, Y 588 (X:764 = 22 x 2 + 60 x 12, Y:262 = 17 x 2 + 38 x 6)-PAL MODE

30.09mm 82.07m m

38.15 mm

85.28mm

38.15mm

30.09mm

Alignment and Adjustments

Samsung Electronics 1-21

1-6-3 55W3

1-6-4 65W3

55W3 Screen Size : X 1225, Y 686 (X:764 = 22 x 2 + 60 x 12, Y:262 = 17 x 2 + 38 x 6)-PAL MODE

35.27mm 96.20mm

44.51mm

99.50mm

44.51mm

35.27mm

65W3 Screen Size : X 1442, Y 838 (X:764 = 22 x 2 + 60 x 12, Y:262 = 17 x 2 + 38 x 6)-PAL MODE

41.52mm

54.37 mm

211.54mm

54.37mm

131

.2 5 mm

41.52mm

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