Pioneer PRO-720HD Service Manual page 95

IC1401 pin 29 (PLL CLK (35MHz))
80
V: 1V/div. H: 1µsec/div.
IC1401 pin 30
81
(Output after PLL division)
V: 1V/div. H: 1µsec/div.
IC1401 pin 38 (DF output)
82
V: 0.5V/div. H: 5msec/div.
IC1419 pin 7 (For H pulse cancel)
83
V: 1V/div. H: 10µsec/div.
I 2/2
DIGITAL CONV. ASSY (2/2)
IC1401 (CM0006CF)
Pin Voltage
No. (V)
1 4.9
2 4.85
3 0
4 4.8Vpp
5 4.8Vpp
GND
6 4.9
7 0
8 4.85
9 4.8
10 4.8
11 4.8Vpp
12 4.8Vpp
13 4.8Vpp
14 4.8Vpp
15 0
GND
16 2.4
17 2.4
18 4.9Vpp
19 4.9
20 4.9
IC1421
(TC74HC4053AF)
Pin Voltage
GND
No. (V)
1 4.8Vpp
2 4.8Vpp
3 0
4 0
5 0
6 0
GND
7 0
8 0
9 0
10 0
11 0
12 4.8Vpp
13 4.8Vpp
14 4.8Vpp
15 4.8Vpp
16 4.9
PRO-720HD, PRO-620HD, PRO-520HD
Pin Voltage Pin Voltage
No. (V) No. (V)
21 0 41 1.2
22 0 42 0
23 0 43 4.9
24 0 44 4.9Vpp
25 0 45 4.9Vpp
26 4.6Vpp 46 4.9Vpp
27 4.8Vpp 47 4.9
28 4.8Vpp 48 0
29 4.8Vpp 49 0
30 4.8Vpp 50 0
31 4.9 51 4.9
32 0 52 0
33 0 53 0
34 0 54 0
35 1.2 55 0
36 0 56 0
37 3.2 57 4.9
38 1Vpp 58 4.9Vpp
39 4.9 59 4.9Vpp
40 0 60 4.9Vpp
IC1403,IC1405,
IC1407
IC1409
(UPD6376GS)
(TC74HC14AF)
Pin Voltage Pin
No. (V) No.
1 4.85 1
2 0 2
3 0 3
4 4.9 4
5 0 5
6 1.6 6
7 4.9 7
8 4.9 8
9 2.1 9
10 2.1 10
11 1.6 11
12 0 12
13 2.4 13
14 2.1 14
15 2.2
16 2.1
Pin Voltage
No. (V)
61 4.9
62 4.9
63 4.9
64 4.9
65 4.9
66 4.9
67 0
68 4.8
69 4.9
70 4.9
71 4.9
72 4.9
73 4.9
74 4.9
75 4.9
76 4.9
77 4.9
78 4.9
79 4.9
80 4.9
IC1402
(TLC2932IPW)
Voltage Pin Voltage
(V) No. (V)
4.8Vpp 1 4.9
4.8Vpp 2 0
4.8Vpp 3 4.8Vpp
4.9Vpp 4 4.9Vpp
4.9Vpp 5 4.9Vpp
4.9Vpp 6 1.8
0 7 0
0 8 0
0 9 0
4.9Vpp 10 0
4.9Vpp 11 0
4.9Vpp 12 1.8
4.9Vpp 13 3.6
4.9 14 4.9
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