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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 ŇProduct 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.

CKB5237L/7227L

11-1

11 Schematic Diagrams

11-4 Main Schematic Diagram

27
R503_7 R500_7 R502_7 R535

25
Q500_7 R504_7 C537_7 C540_7 R505_7 C538 C543_7 R501

17" ONLY 15" ONLY

26

24
D524_7 R506 C522_7

28

R201_7

23
R302

L501

22 21

29

20
R310

19

R517

5

7 6
R444_7 R441_7 C456

16 10
C422 L406

15 8
C432 C434 C458 L401 Q417_7 C455_5 R425 R443 R467_7 L402

9

C465_7

R417

C419

R451

1

R450

R409

R414

14

11 2
R613

12

3
R315

13 4

11-2

CKB5237L/7227L

11 Schematic Diagrams
1 14 V (T601, #1), 110V 2 DC V (IC602, #3) 3 292 V (T601 #5), 110V 4 3.68 V (C612, ­), 110V 1 DC V (T601, #2), 220V 2 DC V (IC602, #3), 220V 3 444 V (T601, #5), 220V 4 3.80 V (C612, ­), 220V

CH1 P-P = 14 V

CH1 RMS = 142.6 V

CH1 P-P = DC V

CH1 RMS = DC V

CH1 P-P = 292 V

CH1 RMS = 181.6 V

CH1 P-P = 3.68 V

CH1 RMS = 840 mV

CH1 P-P = DC V

CH1 RMS = DC V

CH1 P-P = DC V

CH1 RMS = DC V

CH1 P-P = 444 V

CH1 RMS = 354.2 V

CH1 P-P = 3.80V

CH1 RMS = 902 mV

5 12.0 V (IC302, #28)

6 8.80 V (IC302, #26)

7 640 mV (IC302, #24)

8 3.12 V (IC302, #23)

9 928 mV (IC302, #16)

10 2.56 V (IC302, #12)

11 124.8 V (T401, #1)

12 10.0 V (Q406, Base)

CH1 P-P = 12.0 V

CH1 RMS = 6.912 V

CH1 P-P = 8.80 V

CH1 RMS = 6.176 V

CH1 P-P = 640 mV CH1 RMS = 2.908 V

CH1 P-P = 3.12 V

CH1 RMS = 3.620 V

CH1 P-P = 928 mV CH1 RMS = 320.8 mV

CH1 P-P = 2.56 V

CH1 RMS = 820 mV

CH1 P-P = 124.8 V CH1 RMS = 66.16 V

CH1 P-P = 10.0 V

CH1 RMS = 1.672 V

13 128 V (Q411, Drain)

14 1.016 kV (Q406, Collector)

15 64 V (L402_7, S)

16 76 V (L402_7, F)

17 26.0 V (IC300, #6)

18 46.0 V (IC300 #5)

19 1.16 V (IC501 #5)

20 12.48 V (IC501, #9, 10)

CH1 P-P = 128 V

CH1 RMS = 63.3 V

CH1 P-P = 1.016 kV CH1 RMS = 316.0 V

CH1 P-P = 64 V

CH1 RMS = 126.0 V

CH1 P-P = 76 V

CH1 RMS = 127.2 V

CH1 P-P = 26.0 V

CH1 RMS = 13.30 V

CH1 P-P = 46.0 V

CH1 RMS = 6.38 V

CH1 P-P = 1.16 V

CH1 RMS = 823 mV

CH1 P-P = 12.48 V CH1 RMS = 6.672 V

21 148 V (Q504, Drain)

22 5.28 V (Q503, Base)

23 848 V (Q503, Collector)

24 1.00 V (Q301, Base)

25 22.4 V (G1)

26 260 mV (Q500_7, Emitter)

27 332 V (R502_7)

28 88 V (T502_7, #6)

CH1 P-P = 148 V

CH1 RMS = 68.4 V

CH1 P-P = 5.28 V

CH1 RMS = 1.290 V

CH1 P-P = 848 V

CH1 RMS = 305.2 V

CH1 P-P = 1.00 V

CH1 RMS = 163 mV

CH1 P-P = 22.4 V

CH1 RMS = 54.24 V

CH1 P-P = 260 mV CH1 RMS = 2.286 V

CH1 P-P = 332 V

CH1 RMS = 138.0 V

CH1 P-P = 88 V

CH1 RMS = 288.2 V

29 5.20 V (IC202, #16)

CH1 P-P = 5.20 V

CH1 RMS = 4.912 V

CKB5237L/7227L

11-3

11 Schematic Diagrams

11-5 Video Schematic Diagram

30

34

35

31

32

33

11-4

CKB5237L/7227L

11 Schematic Diagrams
30 760 mV (IC101, #5) 31 140 mV (IC101, #11) 32 5.04 V (Q103, Collector)

CH1 P-P = 760 mV CH1 RMS = 2.452 V

CH1 P-P = 140 mV CH1 RMS = 2.770 V

CH1 P-P = 5.04 V

CH1 RMS = 4.952 V

33 4.96 V (Q102, Collector)

34 3.88 V (IC102, #11)

35 48.4 V (DR05, Anode)

CH1 P-P = 4.96 V

CH1 RMS = 4.472 V

CH1 P-P = 3.88 V

CH1 RMS = 3.464 V

CH1 P-P = 48.4 V

CH1 RMS = 26.62 V

CKB5237L/7227L

11-5

11 Schematic Diagrams

11-6 CRT Schematic Diagram (CKB5237L)

11-6

CKB5237L/7227L

11 Schematic Diagrams

11-7 CRT Schematic Diagram (CKB7227L)

CKB5237L/7227L

11-7

11 Schematic Diagrams

Memo

11-8

CKB5237L/7227L