Compaq MV-920 - Page 58

10 Schematic Diagrams
PG17**/PG19**/PG21** 10-4
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
41
42
5.05
0
2.18
3.84
NC
2.32
0
NC
GND
5.05
5
5
5
5
5
5
NC
4.73
NC
0
0.6
5
GND
4.06
5
0
5
5
5
5
0
2.34
2.22
0
12
12
12
12
12
5
GND
2.05
5.05
0
2.18
4.12
NC
2.32
0
NC
GND
5.05
5
5
5
5
0
5
NC
4.62
NC
0
0.36
5.03
GND
2.75
5
0
5
5
5
5
0
2.33
2.22
0
0
0
12
12
0
5
GND
2.62
5.05
0
2.18
4.23
NC
2.31
0
NC
GND
5.04
5
5
5
5
5
5
NC
4.63
NC
0
0.46
5.03
GND
3.77
5
0
5
5
5
5
0
2.28
2.24
0
0
0
0
0
0
5
GND
2.62
pin # pin #
MODES MODES
31 kHz 31 kHz68 kHz 68 kHz91 kHz 91 kHz
Table 10-1. IC201 (ST72E75)
Unit: Vrms
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
0.61
0
0.17
4.83
3.28
6.41
4.01
1.55
1.55
3.37
GND
0
8.05
8.09
2.74
3.27
GND
5.56
GND
5.46
8.15
3.56
3.56
3.16
2.02
5.06
GND
3.63
12.02
5.03
5.03
5.04
0.36
0
0.16
4.82
2.69
6.41
4.0
3.39
3.39
3.3
GND
0
8.04
8.03
2.83
3.26
GND
5.54
GND
5.24
8.16
3.56
3.56
3.05
2.01
5.11
GND
2.49
12.02
5.03
5.03
5.03
0.46
0
0.17
4.82
2.31
6.4
3.99
4.5
4.5
3.29
GND
0
8.04
8.0
2.78
3.24
GND
5.54
GND
5.24
8.16
3.56
3.56
3.05
2.01
5.38
GND
3.69
12.02
5.03
5.03
5.03
pin # pin #
MODES MODES
31 kHz 31 kHz68 kHz 68 kHz91 kHz 91 kHz
Table 10-2. IC251 (SAM9222G)
Unit: Vrms
15
3.42 V (IC201, #33)
CH1 P-P = 3.42 V CH1 RMS = 2.500 V
16
3.16 V (IC201, #32)
CH1 P-P = 3.16 V CH1 RMS = 2.560 V