Text preview for : CKA5227.pdf part of Samsung CKA5227 CKA5227 PC monitor



Back to : SAMSUNG_CKA5227.zip | Home

11 Schematic Diagrams
11-1 Cautions
1. The areas marked with a ! , or on the schematic diagram designate components which have special characteristics important for safety. Replace these parts only with parts identical to those in the original circuit and those specified in the parts list. Before replacing any of these components, carefully read the ÒProduct Safety Notice.Ó 2. Areas marked with a on the schematic diagram designate controls which have been sealed for safety during manufacturing. If these controls need adjustment, they must be replaced with new controls and then sealed after their adjustment. 3. When taking measurements, pay special attention to the following: 1) Do not use your instrument between primary ground (symbol 2) Do not use your instrument between secondary ground (symbol ) and secondary circuit. ) and primary circuit.

11-2 Notes
1. Resistance is shown in OHM. K = 1,000, M = 1,000,000 and the rated power of resistors not noted in the schematic diagram is 1/4W. 2. Capacitance is shown in µF. Capacitances not otherwise noted are shown in pF (1µF = 1,000,000 pF). Rated voltage of condensers not otherwise noted in the schematic diagram is 50 V.

11-3 Abbreviations and Symbols
MO FU CM MP P R-Metal Oxide Fusible R-Cement C-Metalized Polyester C-Polyester Hot Ground Electrostatically Sensitive Device (ESD) ! WW C MPP T R-Wire Wound R-Composition Metal Polypropylene C-Tantalum Can emit X-radiation Cold Ground Provides special safety considerations

1. The secondary voltage is read with an SSVM from the indicated point to a cold ground ( ). The primary voltage is read with an SSVM from the indicated point to a hot ground ( ). 2. This schematic diagram is subject to change without notice.

CKA42*7L/5227L

11-1

11 Schematic Diagrams

11-4 Micom/SMPS Part Schematic Diagram

8 9 13

10

12 11

7

4 5

1

14 15

3 2

11-2

CKA42*7L/5227L

11 Schematic Diagrams

11-5 HV-Defl/High-Voltage Part Schematic Diagram

16 17 31

32

30 29

27

26

25

18

19

28 24 23 22 21 20

CKA42*7L/5227L

11-3

11 Schematic Diagrams

11-6 Video Part Schematic Diagram

38

35

36

37

33 34

11-4

CKA42*7L/5227L

11 Schematic Diagrams

1 240 V (IC602, Drain)

2 55.2 V (T601, #7)

3 8.44 V (IC602, #5)

4 4.52 V (CN201, #9)

5 4.52 V (CN201, #11)

6 0.714 V (CN201, R-Video)

7 5.00 V (IC202, #11)

8 1.7 V (IC202, #2)

CH1 = 240 V

CH1 RMS = 175.8 V

CH1 = 55.2 V

CH1 RMS = 20.24 V

CH1 = 8.44 V

CH1 RMS = 5.028 V

CH1 = 4.52 V

CH1 RMS = 4.236 V

CH1 = 4.52 V

CH1 RMS = 286 mV

CH1 P-P = 0.714 V CH1 RMS = 110 mV

CH1 P-P = 5.00 V

CH1 RMS = 4.088 V

CH1 P-P = 1.7 V

CH1 RMS = 1.278 V

H-Sync

V-Sync

H-Size, duty

9 5 V (IC202, #3)

10 5.04 V (IC202, #8)

11 5.04 V (IC202, #33)

12 5.04 V (IC202, #34)

13 5.04 V (IC202, #37)

14 5.04 V (IC203, #5)

15 5.04 V (IC203, #6)

16 2.52 V (IC301, #3)

CH1 P-P = 5 V

CH1 RMS = 4.312 V

CH1 P-P = 5.04 V

CH1 RMS = 3.012 V

CH1 P-P = 5.04 V

CH1 RMS = 316 mV

CH1 P-P = 5.04 V

CH1 RMS = 1.720 V

CH1 P-P = 5.04 V

CH1 RMS = 5.024 V

CH1 P-P = 5.04 V

CH1 RMS = 3.888 V

CH1 P-P = 5.04 V

CH1 RMS = 3.800 V

CH1 P-P = 2.52 V

CH1 RMS = 10.44 V

17 45.0 V (IC301, #5)

18 6.40 V (IC401, #5)

19 2.30 V (IC401, #12)

20 5.04 V (IC401, #22)

21 5.04 V (IC401, #23)

22 3.28 V (IC401, #24)

23 4.76 V (IC401, #26)

24 12.1 V (IC401, #28)

CH1 P-P = 45.0 V

CH1 RMS = 5.48 V

CH1 = 6.40 V

CH1 RMS = 4.188 V

CH1 P-P = 2.30 V

CH1 RMS = 750 mV

CH1 = 5.04 V

CH1 RMS = 3.564 V

CH1 = 5.04 V

CH1 RMS = 3.500 V

CH1 = 3.28 V

CH1 RMS = 2.904 V

CH1 P-P = 4.76 V

CH1 RMS = 3.652 V

CH1 P-P = 12.1 V

CH1 RMS = 4.34 V

25 29.4 V (Q403, Collector)

26 10.4 V (Q402, Bias)

27 1.104 kV (Q402, Collector)

28 246 V (Q410, Collector)

29 12.48 V (Q508, Gain)

30 76.0 V (Q508, Drain)

31 31.0 V (T501,

32 232 V (T501,

CH1 P-P = 29.4 V

CH1 RMS = 13.16 V

CH1 P-P = 10.4 V

CH1 RMS = 1.384 V

CH1 P-P = 1.104 kV CH1 RMS = V

CH1 P-P = 246 V

CH1 RMS = 46.4 V

CH1 P-P = 12.48 V CH1 RMS = 4.032 V

CH1 P-P = 76.0 V

CH1 RMS = 61.04 V

CH1 P-P = 31.0 V

CH1 RMS = 6.88 V

CH1 P-P = 232 V

CH1 RMS = 54.0 V

33 4.72 V (CN101, #10)

34 102.0 V (CN101, #11)

35 3.10 V (IC101, #4)

36 4.92 V (IC101, #19)

37 72.0 V (IC102, #1)

38 60.8 V (SK103, #1)

CH1 P-P = 4.72 V

CH1 RMS = 4.432 V

CH1 = 102.0 V

CH1 RMS = 72.04 V

CH1 = 3.10 V

CH1 RMS = 2.320 V

CH1 = 4.92 V

CH1 RMS = 2.120 V

CH1 = 72.0 V

CH1 RMS = 45.76 V

CH1 = 60.8 V

CH1 RMS = 35.80 V

CKA42*7L/5227L

11-5

11 Schematic Diagrams

Table 11-1. IC101 (KA2141)
pin # pin # pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 1.47 1.74 1.84 2.39 11.65 2.38 GND 2.39 0.16 ~ 3.04 4.99 1.47 1.74 1.84 2.39 11.66 2.38 GND 2.39 0.16~3.04 4.93 MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 4.37 5.79 3.42 GND 5.52 11.65 3.53 5.49 3.59 1.5 ~ 2.1 4.13 5.8 3.35 GND 5.53 11.66 3.46 5.50 3.52 1.5 ~ 2.1

Table 11-2. IC102 (LM2406)
pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 44.72 GND 43.83 GND 44.60 75.66 GND 3.42 3.53 11.66 3.59 46V GND 45.09 GND 46 72.77 GND 3.35 3.47 11.66 3.52

Table 11-3. IC201 (KIA7545)
pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 5.05 GND 5.03 5.05 GND 5.03

Table 11-4. IC202 (68HC705)
pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 0~5 0~5 0~5 5.03 5.05 ­ GND 2.46 2.08 5.03 5.03 ­ ­ ­ ­ 4.94 ­ ­ ­ ­ 0~5 0~5 0~5 5.03 5.05 ­ GND 2.46 2.08 5.03 5.03 ­ ­ ­ ­ 4.94 ­ ­ ­ ­ MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz ­ ­ 5.05 5.05 3.82 3.68 ­ 5.05 5.03 5.02 5.02 5.03 ­ ­ ­ ­ 4.98 ­ ­ 5.03 ­ ­ 5.05 5.05 3.82 3.68 ­ 5.05 5.03 5.02 5.02 5.03 ­ ­ ­ ­ 4.98 ­ ­ 5.03

pin #

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

1 2 3 4 5 6 7 8 9 10 11

1 2 3

Unit: Vrms Table 11-5. IC203 (24LC04B)
MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz GND GND GND GND 5.02 5.03 GND 5.05 GND GND GND GND 5.02 5.03 GND 5.05

Unit: Vrms Unit: Vrms
1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Unit: Vrms

Unit: Vrms

Table 11-6. IC204 (24LC211/P)
pin # pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz ­ ­ ­ GND 3.82 3.68 4.78 4.99 ­ ­ ­ GND 3.82 3.68 4.78 4.99

Table 11-8. IC302 (L2M2M)
pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 9.57 13.02 9.54 11.03 9.54 9.57 2.12 2.13 9.57 13.02 9.54 11.03 9.54 9.57 2.12 2.13

Table 11-9. IC401 (TDA9109)
pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz ­ ­ 5.06 3.026 4.02 2.374 2.378 7.97 ­ 9.32 ­ -0.5 7.91 2.349 4.65 36.8mV ­ ­ 5.06 3.026 4.02 2.374 2.378 7.97 ­ 9.32 ­ -0.5 7.91 2.349 4.65 36.8mV MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz GND 7.04 GND 5.30 8.04 3.51 3.44 2.901 6.73 2.772 GND 1.633 12.05 5.04 5.04 5.04 GND 7.04 GND 5.30 8.04 3.51 3.44 2.901 6.73 2.772 GND 1.633 12.05 5.04 5.04 5.04

Table 11-10. IC601 (TL431CLP)
pin # pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 2.52 GND 10.69 2.52 GND 10.69

Table 11-12. IC603 (7805)
MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 13.04 GND 5.09 13.04 GND 5.09

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

Unit: Vrms

Unit: Vrms

Table 11-7. IC301 (TDA9302)
pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 1.09 12.98 10.90 10.99 5.5 12.92 1.09 1.09 12.98 10.90 10.99 5.5 12.92 1.09

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

1 2 3

1 2 3

Unit: Vrms

Unit: Vrms

Table 11-11. IC602 (KA2S0880)
pin # pin # MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 189.5 GND 19.70 2.389 4.8 189.5 GND 19.70 2.389 4.8

Table 11-13. IC604 (78R12)
MODES 1024 x 768 / 60 Hz 640 x 480 / 60 Hz 12.97 12.11 GND 9.22 12.97 12.11 GND 9.22

1 2 3 4 5 6 7

Unit: Vrms

1 2 3 4 5

1 2 3 4

Unit: Vrms

Unit: Vrms

Unit: Vrms

11-6

CKA42*7L/5227L