Sony Trinitron CPD-420GS, Руководство по обслуживанию

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—34— —33—
—32— —31—
CPD-420GS/GST
All voltages are in V
IC1001
pin volt
1 0.03
2 2.95
3 2.92
4 3.41
5 0.01
CN1001 1/2
pin volt
1 3.93
2 GND
3 GND
4 0.06
5 0.06
6 0.07
7 5.02
8 5.02
9 0.07
N BOARD TRANSISTOR
VOLTAGE LIST
All voltages are in V
B C E
Q1001 0.84 4.47 0.84
Q1002 0.91 5.03 0.91
N BOARD IC VOLTAGE LIST
6 0.01
7 4.92
8 5.02
9 5.02
10 GND
11 5.03
12 0.00
13 0.00
14 -0.41
15 5.06
16 4.16
17 3.92
18 2.48
19 3.83
20 0.32
21 5.02
22 0.12
23 5.03
24 4.70
25 0.03
26 0.03
27 0.46
28 0.19
29 GND
30 4.54
31 5.03
32 0.45
33 0.06
34 4.81
35 4.83
36 4.33
37 4.70
38 0.00
39 5.02
40 5.03
41 GND
42 3.82
43 GND
44 2.41
45 2.31
46 5.06
47 5.06
48 0.06
49 5.02
50 5.02
51 0.12
52 3.64
53 5.07
54 5.02
55 5.03
56 GND
N TO D BOARD CONNECTORS VOLTAGES
10 GND
11 GND
12 1.64
13 1.44
14 3.83
15 1.43
16 4.60
17 1.56
18 1.59
19 1.56
20 1.48
21 4.00
22 --
23 0.01
24 4.16
25 0.01
26 1.39
27 3.41
28 2.36
29 GND
30 3.48
CN1001 2/2
pin volt
1 GND
2 0.46
3 1.32
4 GND
5 1.28
6 0.00
7 5.02
8 1.62
9 1.55
10 2.17
11 GND
12 1.64
13 5.03
14 GND
15 GND
16 -0.42
17 5.02
18 N.C
19 N.C
20 N.C
21 N.C
22 N.C
23 2.52
24 0.00
25 0.00
26 3.64
27 1.07
28 5.06
29 GND
30 GND
CN1003
pin volt
1 GND
2 4.81
3 4.83
4 0.01
5 4.70
6 GND
7 4.35
8 5.02
9 0.47
10 0.04
11 0.48
CN1004
pin volt
1 0.56
2 0.06
3 0.12
4 0.19
5 0.30
6 GND
7 4.54
DIODE
D1001 C2
D1002 A3
D1003 A3
D1017 B2
D1018 A4
IC
IC1001 A2
IC1002 C3
IC1005 B1
N BOARD
SEMICONDUCTOR LOCATION
IC
IC1001 A3
IC1003 B4
TRANSISTOR
Q1001 A1
Q1002 B2
N BOARD
SEMICONDUCTOR LOCATION
IC1006 A3
IC1007 C2
TRANSISTOR
Q1003 B2
(3) Schematic Diagram of N Board
N BOARD WAVEFORMS
3.38V
p-p
(H) 3.56V
p-p
(8MHz)
5.03V
p-p
(V)
5.00V
p-p
(H)
3.25V
p-p
(H)
1 2
3 4
5
All voltages are in V
1 2 3 4
A
B
C
N
[Micro, DSP]
N BOARD <CONDUCTOR SIDE>
1 2 3 4
A
B
C
N BOARD <COMPONENT SIDE>
A
board
N
board
31 x 11 Foldout-2.fm Page 2 Wednesday, October 14, 1998 8:30 AM