Pioneer EFX-500 Service Manual page 17
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Also See for EFX-500:
- Operating instructions manual (80 pages) ,
- Operating instructions manual (20 pages)
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5
IC702 (LB1740)
No.
Voltage [ V ]
1
0 - 5.0
2
0 - 5.0
3
0 - 5.0
4
0 - 5.0
5
0 - 5.0
6
0 - 5.0
16
7
0 - 5.0
8
0 - 5.0
9
2.8
H
Q701 -Q716 : LED DRIVER
5
6
IC704 (TC74HC174AF)
No.
Voltage [ V ]
Voltage [ V ]
Voltage [ V ]
No.
No.
10
0
11
0 - 3.0
1
4.79
9
0 - 5.0
12
0 - 3.0
2
0 - 5.0
10
4.75
13
0 - 3.0
3
0 - 5.0
11
0 - 5.0
14
0 - 3.0
4
0 - 5.0
12
4.75
15
0 - 3.0
5
4.75
13
0 - 5.0
16
0 - 3.0
6
0
14
0 - 5.0
17
0 - 3.0
7
0
15
4.75
18
0 - 3.0
8
0
16
4.79
CN901
17
18
17
H
CN902
6
7
IC705 (TC74HC174AF)
Voltage [ V ]
Voltage [ V ]
No.
No.
1
4.79
9
0 - 5.0
2
0 - 5.0
10
4.74
IC702- 1pin(S1), 18pin(C1)
16
3
0 - 5.0
11
0 - 5.0
V : 2V/div.
4
0 - 5.0
12
4.74
5
4.74
13
0 - 5.0
IC702
6
0 - 5.0
14
0 - 5.0
1pin (S1)
7
4.74
15
4.74
8
0
16
4.78
IC702
18pin (C1)
(Q717 - Q727 : LED DRIVER)
(frip-flop)
(frip-flop)
IC705- 2pin
IC705- 2pin
18
V : 2V/div.
V : 2V/div.
H : 0.2S/div.
GND
7
8
EFX-500
H : 2mS/div.
A
GND
GND
B
C
D
H : 0.2S/div.
GND
E
1/2
17
8
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