Samsung CKG7507L, SyncMaster 700s Plus Service Manual

Manual

SERVICE

COLOR MONITOR CONTENTS

COLOR TEMP.

1. Precautions

2. Reference Information

3. Product Specifications

4. Operating Instructions

5. Disassembly & Reassembly

6. Alignment & Adjustments

7. Troubleshooting

8. Exploded View & Parts List

9. Electrical Parts List

10. Block Diagram

11. PCB Diagrams

12. Wiring Diagram

13. Schematic Diagrams

COLOR MONITOR

CKG7507L (SyncMaster 700s )

10 Block Diagram

CKG7507L 10-1

TO D - COIL ON THE CRT

CRT

-90V ( FROM FBT)

BRIGHTNESS CONTROL

CONTRAST CONTROL

+12V

+200V

-90V

+30V

FOCUS1,2

SCREEN

R G B

H/V

VIDEO BOARD

MAIN BOARD

H - SIZE V - SIZE H - POSI. V - POSI. S - PIN. TRAPEZOID PARA. PIN - BALANCE V - LIN.

VER.-BLANKING GENERATOR

High Voltage OUTPUT

G1

ABL CIRCUIT

CONTRAST CONTROL

BRIGHTNESS CONTROL

DEGAUSSING BLOCK RL601

AC-INLET SOCKET IS601

LINE FILTER L601

CRT SOCKET BOARD

SOCKET SK1

G1

HEATER

R G B

D-SUB INPUT (15 PIN)

Video Pre-Amp IC101(KA2140B)

VIDEO OUTPUT IC101(LM2405T)

OSD DRIVE CONTROL IC401(LSC4350)

TILT

ABL

R G B - CUTOFF CONTROL(KA324)

H-SYNC, V-SYNC

V-MUTE S-CORRECTION LED PS-1 (SUSPEND) PS-2 (POWEROFF)

PWM CONTROL & SWITCHING FET

IC601

RECTIFIER (D601~D604)

SWITCHING TRANS. T601

+70V

+13V

-12V

+7V

TO VIDEO

+12V REGULATION

PS1,PS2 (FROM Micom)

CRT HEATER

+45V

+12V

HEATER

PS-2

POWER-OFF MODE CONTROL

(Q606)

2 EPROM (24LC411) IC203

FRONT CONTROL BOARD

V-SYNC

H-SYNC,

HOR./VER. OSC PROCESSOR (UPC1883) IC401

MICOM (BD-7) IC201

HOR.-DY CN400 CN401 CN402

VER. - DY CN301

High Voltage CONTROL IC501

FBT T501

HOR.- OUT Q406

H-DEF. TRANS T401

HOR.-DEF. STEP-UP

CONVERTER Q411

VER. OUTPUT IC301

High Volt.-DRIVE Q501

HOR.-DRIVE Q403

POSITION SIZE G/D COLOR TEMP RECALL DEGAUSS ADJUSTMENT

BRIGHTNESS CONTRAST LED

VER. OUTPUT & TILT CONTROL

13-1 CKG7507L

!

1 2

13 Schematic Diagrams

13-1 Power Part Schematic Diagram

13 Schematic Diagrams

CKG7507L 13-2

1 2 3 4

15

13.8

GND

2

14.6

13.6

GND

2.5

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-2. IC602 (TV817M)

Unit: Vrms

1 2 3 4 5

194.6 GND

19.8

3.8

6.2

186

GND

18

2.3 5

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-1. IC601 (KA0680)

Unit: Vrms

1 2 3

2.5

GND

12.5

2.5

GND

12.6

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-3. IC603 (TL431CLP)

Unit: Vrms

1 2 3

14.4 0 5

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-4. IC606 (MC7805)

Unit: Vrms

1 2 3

15

0

12

15

0

12

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-5. IC607 (GL7812)

Unit: Vrms

344 V (IC601, #1)

CH1 P-P = 344 V CH1 RMS = 184.2 V

1

6.4 V (IC601, #5)

CH1 P-P = 6.4 V CH1 RMS = 4.804 V

2

13 Schematic Diagrams

13-3 CKG7507L

40

42

11

9

7 8

3

4

!

5

6

10

41

39

38

43

13-2 Micro Processor & Vertical Deflection Part Schematic Diagram

13 Schematic Diagrams

CKG7507L 13-4

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

9.1

2.5

1.3

2.5

2.4

4.2

3.1

1.9

3.6

3.5

2.6

2.4 5

GND

9.1

2.5

1.5

2.4

4.2

2.9

1.9

3.6

3.5

3.4

2.5

2.4

4.9

GND

9.1

2.2

6.1

2.7

2.5

8.3

3.3

2.1

0.6

3.6

2.4

4.3

GND

9.1

1.6

6.2

1.2

1.5

0.4

8.3

3.3

2.2

0.6

3.6

2.4

4.3

GND

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

pin #

MODES

1024 x 768 / 85 Hz 1024 x 768 / 85 Hz640 x 480 / 60 Hz 640 x 480 / 60 Hz

MODES

Table 13-9. IC401 (UPC1883)

Unit: Vrms

1 2 3 4 5 6 7 8

3.5

0.2

GND

5 5

GND

5

2.1

3.4

4.6

GND

4.7

GND

4.7

2.1

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-7. IC202 (24LC41)

Unit: Vrms

1 2 3 4 5 6 7

1.24

14.9

12.5

–12.7

4.9

14.5

1.2

14.7

12.5

–12.6

6.5

14.8

1.1

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-8. IC301 (TDA9302)

Unit: Vrms

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21

3.4

3.6

3.3 5 5 –

GND

2.9

2.8 5 5 0

2.8 0 0 –

0.2

0.1

3.7

3.5

3.4 5 5 –

GND

3

2.8 5 5 0

2.8 0 0 –

0.2

5.2

0

4.9 5

1.6

3.5

1.8

3.5

4.9

0.2

1.4

3.7

3.9

3.3

3.4

2.8

1.4

0.2

0

5.1

1.4

3.5

1.5

2.7

4.9

0.3

1.7

3.9

3.8

4.9

3.5 4

2.43

4.7

4.9

22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

pin #

MODES

1024 x 768 / 85 Hz 1024 x 768 / 85 Hz640 x 480 / 60 Hz 640 x 480 / 60 Hz

MODES

Table 13-6. IC201 (BD7)

Unit: Vrms

29.6 V (Q301, Collector)

CH1 P-P = 29.6 V CH1 RMS = 14.70 V

5

31.6 V (IC301, #6)

CH1 P-P = 31.6 V CH1 RMS = 12.76 V

9

28.8 V (G1)

CH1 P-P = 28.8 V CH1 RMS = 50.28 V

6

54.8 V (IC301, #5)

CH1 P-P = 54.8 V CH1 RMS = 6.38 V

10

8.56 V (IC401, #18)

CH1 P-P = 8.56 V CH1 RMS = 5.900 V

3

5.20 V (IC401, #17)

CH1 P-P = 5.20 V CH1 RMS = 1.768 V

4

2.80 V (IC401, #9)

CH1 P-P = 2.80 V CH1 RMS = 3.469 V

7

1.88 V (CN301, #3)

CH1 P-P = 1.88 V CH1 RMS = 522 mV

11

240 mV (IC401, #10)

CH1 P-P = 240 mV CH1 RMS = 3.533 V

8

5.20 V (IC201, #42)

CH1 P-P = 5.20 V CH1 RMS = 368 mV

38

5.36 V (IC201, #34)

CH1 P-P = 5.36 V CH1 RMS = 1.500 V

41

5.36 V (IC201, #33)

CH1 P-P = 5.36 V CH1 RMS = 332 mV

42

5.36 V (IC201, #41)

CH1 P-P = 5.36 V CH1 RMS = 1.464 V

39

7.12 V (Q401, #Emitter)

CH1 P-P = 7.12 V CH1 RMS = 4.836 V

43

5.20 V (IC201, #37)

CH1 P-P = 5.20 V CH1 RMS = 5.000 V

40

13 Schematic Diagrams

13-5 CKG7507L

!

12

13

15

14

17

23 22

21

!

27

29

26

25

19

18

16

24

28

20

13-3 Horizontal Deflection & High Voltage Part Schematic Diagram

13 Schematic Diagrams

CKG7507L 13-6

1 2 3 4 5 6 7 8

3.2

2.5

0.2

1.4

GND

9.1

14.8 5

1.8

2.5 0

1.8

GND

4

14.7 5

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-10. IC402 (KA3883)

Unit: Vrms

1 2 3 4 5 6 7 8

3.9

2.9

GND

5.6

5.9 0

12

5.4

2.8

GND

5.7

5.9 0

11.7

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-12. IC502 (LM358N)

Unit: Vrms

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

4.8

1.7

0.2

0.9

3.5

GND

12

6.5

6.5 12 12

0

4.9

5.5

4.9

4.8

2.4

0.1

1.3

3.4

GND

12.1

4.1

12.1

12.1 0

4.9

5.6

4.9

pin #

MODES MODES

1024 x 768 / 85 Hz 1024 x 768 / 85 Hz640 x 480 / 60 Hz 640 x 480 / 60 Hz

Table 13-11. IC501 (KA7500)

Unit: Vrms

1.00 V (IC402, #3)

CH1 P-P = 1.00 V CH1 RMS = 236 mV

13

140 V (Q403, Collector)

CH1 P-P = 140 V CH1 RMS = 52.7 V

17

15.8 V (Q411, Gate)

CH1 P-P = 15.8 V CH1 RMS = 8.37 V

14

11.0 V (Q406, Base)

CH1 P-P = 11.0 V CH1 RMS = 1.60 V

18

138 V (Q411, Drain)

CH1 P-P = 138 V CH1 RMS = 65.2 V

15

1.096 kV (Q406, Collector)

CH1 P-P = 1.096 kV CH1 RMS = 348.4 V

19

2.48 V (IC402, #4)

CH1 P-P = 2.48 V CH1 RMS = 1.464 V

12

30.0 V (T402, #10)

CH1 P-P = 30.0 V CH1 RMS = 8.40 V

16

64 V (Q409, Drain)

CH1 P-P = 64 V CH1 RMS = 126.1 V

20

760 mV (IC501, #5)

CH1 P-P = 760 mV CH1 RMS = 860 mV

21

13.68 V (Q504, Gate)

CH1 P-P = 13.68 V CH1 RMS = 6.100 V

22

162 V (Q504, Drain)

CH1 P-P = 162 V CH1 RMS = 67.1 V

23

8.96 V (Q505, Base)

CH1 P-P = 8.96 V CH1 RMS = 5.344 V

24

5.76 V (Q503, Base)

CH1 P-P = 5.76 V CH1 RMS = 1.516 V

25

160 V (Q514, Collector)

CH1 P-P = 160 V CH1 RMS = 69.1 V

29

856 V (Q503, Collector)

CH1 P-P = 856 V CH1 RMS = 251.2 V

26

6.08 V (IC502, #1)

CH1 P-P = 6.08 V CH1 RMS = 4.440 V

27

312 V (T503, #1)

CH1 P-P = 312 V CH1 RMS = 96.2 V

28

13 Schematic Diagrams

13-7 CKG7507L

!

30

31

32 33

34

3736

35

13-4 Video & Control Part Schematic Diagram

13 Schematic Diagrams

CKG7507L 13-8

1 2 3 4 5 6 7 8

9 10 11 12 13 14

1.4

0.1

2.5 12

GND

2.5 12

GND

2.5

GND

3

2.8

1.4

0.8

2.5

1.8

GND

2.5

11.8 GND

2.5

GND

3.12

2.9

4.8

4.4

5.2 3

5.1

2.9

GND

12

2.9

5.2

1.3

1.2

1.1

4.9

4.7

5.2

3.2

5.1

3.1

GND

11.9 3

5.2

1.3

1.2

1.1

15 16 17 18 19 20 21 22 23 24 25 26 27 28

pin #

MODES

1024 x 768 / 85 Hz 1024 x 768 / 85 Hz640 x 480 / 60 Hz 640 x 480 / 60 Hz

MODES

Table 13-13. IC101 (KA2140)

Unit: Vrms

1 2 3 4 5 6 7 8

9 10 11

45.6

GND

46.2

GND

46.6

73.1

GND

2.9

2.9 12

3

40

GND

41

GND

41

73.1

GND

3.1

3.1 12

3.2

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-14. IC102 (LM2405T)

Unit: Vrms

1 2 3 4 5 6 7 8

9 10 11 12 13 14

1

2.4

2.4 12

2.6

7.3

7.7

2.5

–12.6

2.2

2.5

7.3

1 2 2

12

2.6

7.4

7.8

2.5

–12.6

2.5

7.3

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-15. IC103 (LM324N)

Unit: Vrms

1 2 3 4 5 6 7 8

9 10 11 12 13 14

0.3 5 5

0.2

0.2 5

gnd

0.2 5

1.4

4.8

1.3 5

0.3 5 5 2

4.7

0.3

gnd

4.9

0.3

4.7

1.7

4.4 5

pin #

MODES

1024 x 768 / 85 Hz 640 x 480 / 60 Hz

Table 13-17. IC105 (74HCT14)

Unit: Vrms

1 2 3 4 5 6 7 8

9 10 11 12

0.1

3.8

1.8 5 5 0 5 5

4.5

3.5

3.3

2.4

0

1.4

1.4 5

4.8 0 5 5

4.6

3.4

3.1

2.4

2.8

2.6

3.8 5

0.2 0

0.1

1.4

GND

2.6

2.5

2.4 4 5

0.2 0

0.1

1.4

GND

13 14 15 16 17 18 19 20 21 22 23 24

pin #

MODES

1024 x 768 / 85 Hz 1024 x 768 / 85 Hz640 x 480 / 60 Hz 640 x 480 / 60 Hz

MODES

Table 13-16. IC104 (LSC4350)

Unit: Vrms

860 mV (IC101, #5, 8, 11)

CH1 P-P = 860 mV CH1 RMS = 2.412 V

30

3.28 V (IC101, #18,20,23)

CH1 P-P = 3.28 V CH1 RMS = 2.748 V

31

5.40 V (IC101, #15)

CH1 P-P = 5.40 V CH1 RMS = 4.870 V

33

40.8 V (IC102, #1, 3, 5)

CH1 P-P = 40.8 V CH1 RMS = 46.28 V

34

5.40 V (IC104, #18)

CH1 P-P = 5.40 V CH1 RMS = 324 mV

37

39.2 V (SK1, #1, 2, 3)

CH1 P-P = 39.2 V CH1 RMS = 26.90 V

35

5.40 V (IC101, #16)

CH1 P-P = 5.40 V CH1 RMS = 4.416 V

32

5.44 V (IC104, #5)

CH1 P-P = 5.44 V CH1 RMS = 4.408 V

36

11 PCB Diagrams

CKG7507L/LM 11-1

11 PCB Diagrams

11-1 Main PCB (Bottom View)

11 PCB Diagrams

11-2 CKG7507L/LM

11-2 Video PCB (Bottom View)

11 PCB Diagrams

CKG7507L/LM 11-3

PARTS TYPE NO. REF. NO.

KSC945/ KSC815

2N3904 2N3906 MPSA42

KSA733 MPS222A MPS3646

KSD1616/ KSC2316

KSB1116/ KSA916

KSC1008

YG123S15/ FMQG2FS/ 5TZ52

KSC5088 KSC5386/

2SC5149

IRF740 IRF630

IRF/U230A

Q106, Q108, Q110, Q201, Q202, Q203, Q301, Q302, Q604, Q606

Q401, Q412, Q413, Q501 Q402 Q514, QR01, QG01, QB01,

Q403, Q514 Q109, Q410, Q506, Q513 Q502 Q102

Q510

Q505, Q603, Q605

Q404, Q407, Q608

D403

Q406 Q503

Q504 Q411

Q405, Q408, Q409

E

B

C

E

C

B

C

E

G

D

S

A

C

11-3 Semiconductor Lead Identification

TYPE NO. REF. NO. PARTS TYPE NO. REF. NO.PARTS

LTV-817

KA358 KA3883

74HCT14A KA324

TL494

LSC4350

KA2140B

UPC1883

68HC705

TDA9302H

KA7805 KA7812

KA431

LM2405

KA2S0680

IC602

IC502 IC402

IC105 IC103

IC501

IC104

IC101

IC401

IC201

IC301

IC606 IC607

IC603

IC102

IC601

R

A

K

I

G

O

G

D

S

8

1

14

1

16

1

24

1

28

1

30

1

42

1

4

1

12 Wiring Diagrams

CKG7507L 12-1

12 Wiring Diagram

1 2

3

H +

H –

1 2

3

(RED)H +

NC

(BLUE)H –

1 2

3

1 2

3

(Brown)V+

NC

(ORG)V –

V + NC V –

CN402

1 2

3

AC NC AC

1 2

3

AC NC AC

1 2

3

AC INPUT NC AC INPUT

CN106 (CN-TILT)

5

4

3

2

G1

CONT_VR

LED

CONT_1

5

4

3

2

G1

CONT VR

12 V_1

CONT_1

5 V

1

9

10 11 12 13 14 15 16 17 18 19 20

V_BLK

–12 V

CLAMP

H_SYNC

ACL

V_SYNC

SDA

SCL S/RASTER EEP_DATA

12 V

EEP_CLK

11

2 3 4 5 6 7 8

AFC

CONTRAST

G1

GND

5 V 7 V

70 V

GND

FBT

1 2

3 4 5 6 7 8

9 10 11 12

R_IN G_IN B_IN

GND

DDC_RETURN

GND_R GND_G

GND_B RESERVED S_RASTER

GND

SDA

1

2

3

4

5

6

7

8

R-OUT

GND

G-OUT

GND

B-OUT

GND

6.3 V

G1

1

2

3

4

5

6

7

8

R-OUT

GND

G-OUT

GND

B-OUT

GND

7 V

G1

1 2

3 4 5 6 7 8

9 10 11 12

15 PIN D-SUB

refer to pin

assignment

of

product spec.

DEGAUSSING COIL

LINE FILTER

CRT SOCKET

G2

CN14

SIGNAL CABLE

CN400 CN401

CN301 (V-DY)

CN602

IS601

CN201

CN103

CN201-1

CF202

CN101

MAIN PCB

CRT SOCKET PCB

VIDEO PCB

CN102

FOCUS2 (RED)

FOCUS1 (WHITE)

9

10 11 12 13 14 15 16 17 18 19 20

2 3 4 5 6 7 8

V_BLK –12 V CLAMP H_SYNC ACL V_SYNC SDA SCL S/RASTER EEP_DATA 12 V EEP_CLK

AFC CONTRAST G1 GND 5 V 7 V 70 V GND

CN105

CF105

13 14

15

H_SYNC V_SYNC

SCL

13 14

15

R_IN G_IN B_IN

GND

DDC_RETURN

GND_R GND_G

GND_B RESERVED S_RASTER

GND

SDA H_SYNC V_SYNC

SCL

1 2

3

1 2

3

AUDIO IN

NC

GND

AUDIO IN NC GND

CF103

9

8

7

6

KEY_1

5 V

GND

–90 V

13

12

11

10

GND

KEY_4

KEY_3

KEY_2

6 –90 V

7 GND

12

11

10

9

KEY_4

KEY_3

KEY_2

KEY_1

5 V

8

CN201-2

13 GND

1 2

LED

5 V

12LED

5 V

LED PCB VR PCB

CONTROL PCB

1

2

3

1

2

3

TILT+(RED)

NC

TILT–(BLK)

TILT +

NC

TILT –

NCNC