Pioneer PRO-730HDI Service Manual page 52

1
WAVEFORMS and VOLTAGES
A
Note : The encircled numbers denote measuring point in the schematic diagram.
J F 1/5
VIDEO UCOM SERVICE ASSY
IC1906 (M306V7FGFP)
No Voltage (V) No Voltage (V)
1 0 51
2 0 52
3 0/5 53
4 0/5 54
5 0 55
B
6 0 56
7 0 57
8 0 58
9 0 59
10 0 60
11 3.3 61
12 3.3 62
13 0/3.3 63
14 0 64
15 1.3/1.7 65
16 3.3 66
17 0 67
C
18 - 68
19 3.2 69
20 0 70
21 0 71
22 0 72
23 0/3.3 73
24 3.3 74
25 0/3.3 75
26 0/3.3 76
27 3.3 77
28 0/5 78
D
29 0/5 79
30 0/5 80
31 0/5 81
32 0 82
33 0 83
34 0 84
35 3.3 85
36 3.3 86
37 3.3 87
38 0 88
39 0 89
E 40 3.3 90
41 0 91
42 3.3 92
43 3.3 93
44 0 94
45 3.3 95
46 3.3 96
47 0 97
48 3.3 98
49 0/3.3 99
50 0 100
F
52
1
2
IC1905 (M62399FP)
No Voltage (V)
0 1 5.0
3.3 2 0/5
3.3 3 0/5
0 4 3.0
0/3.3 5 5.4
0 6 -
0 7 -
3.3 8 0
3.3 9 3.8
3.3 10 0
3.3
11 3.8
0/3.0 12 4.2
3.3 13 2.3
0/3.0 14 5.6
3.0 15 4.6
0 16 9.0
0 17 5.0
0
18 0
0/3.3 19 5.0
0/3.3 20 0
3.3
IC1904
3.3
(TC74VHCT541AFT)
0
No Voltage (V)
3.3
1 0
0/3.3
2 0
3.0
3 0
0
4 0
0
5 0
0
6 3.3
0
7 0
3.3
8 0
3.3
9 3.3
0
10 0
0
11 5.0
3.3
12 0
0/3.3
13 0
0
14 5.0
0
15 0
3.3
16 0
1.6
17 0
1.6
18 0
0
19 0
2.5
20 5.0
0
IC1907
0
(TC74VHCT541AFT)
0
No
No Voltage (V)
0
9
1 0
1.0
10
2 0
5.0
3 - 11
1.0
4 0 12
13
5 0
6 3.3 14
15
7 3.3
16
8 0
2
3
J F 2/5
VIDEO UCOM SERVICE ASSY
• Condition: Picure Quality : STANDARD
Range
Foot of R2809
32
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
Foot of R2832
33
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
Foot of R2867
34
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
C2856 + terminal (MYIN)
35
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
Voltage (V) No Voltage (V)
0
17 0
0
18 0
0
19 0
0
20 5.0
5.0
5.0
0
0
PRO-730HDI
3
4
: DC range
C2855 + terminal (MB-YIN)
36
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
GND
C2854 + terminal (MR-YIN)
37
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
GND
Foot of R2888 (MHW)
38
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
GND
Foot of R2887 (MVW)
39
V: 1V/div. H: 2msec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
GND
Foot of R2901
40
V: 1V/div. H: 10µsec/div.
(Input : INPUT1 (COMPOSITE),
EIA color-bar)
4
GND
GND
GND
GND
GND