Pioneer EFX-500, Руководство по обслуживанию

Страница: 17 / 39

EFX-500
17
A
B
C
D
5 6 7 8
5 6
7
8
1/2
E
H
CN901
H
CN902
17
IC705- 2pin
V : 2V/div. H : 0.2S/div.
GND
16
IC702- 1pin(S1), 18pin(C1)
V : 2V/div. H : 2mS/div.
IC702
1pin (S1)
IC702
18pin (C1)
GND
GND
18
IC705- 2pin
V : 2V/div. H : 0.2S/div.
GND
18
17
16
Voltage [ V ]
No.
1
2
3
4
5
6
7
8
9 0 - 5.0
0 - 5.0
0 - 5.0
0 - 5.0
0 - 5.0
0 - 5.0
0 - 5.0
0 - 5.0
2.8
Voltage [ V ]
No.
10
11
12
13
14
15
16
17
18
0
0 - 3.0
0 - 3.0
0 - 3.0
0 - 3.0
0 - 3.0
0 - 3.0
0 - 3.0
0 - 3.0
IC702 (LB1740)
Voltage [ V ]
No.
1
2
3
4
5
6
7
8 4.79
0 - 5.0
0 - 5.0
0 - 5.0
4.75
0
0
0
Voltage [ V ]
No.
9
10
11
12
13
14
15
16
0 - 5.0
4.75
0 - 5.0
4.75
0 - 5.0
0 - 5.0
4.75
4.79
IC704 (TC74HC174AF)
Voltage [ V ]
No.
1
2
3
4
5
6
7
8 4.79
0 - 5.0
0 - 5.0
0 - 5.0
4.74
0 - 5.0
4.74
0
Voltage [ V ]
No.
9
10
11
12
13
14
15
16
0 - 5.0
4.74
0 - 5.0
4.74
0 - 5.0
0 - 5.0
4.74
4.78
IC705 (TC74HC174AF)
(Q717 - Q727 : LED DRIVER)
Q701 -Q716 : LED DRIVER
(frip-flop)
(frip-flop)