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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 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.
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