NV-U74
NV-U74
28
28
5-12. SCHEMATIC DIAGRAM - MAIN Board (7/10) -
• See page 33 for IC Block Diagrams.
• See page 37 for IC Pin Function Description.
X4501
0
R4512
1500
R4514
0
R4505
2.2
C4502
2.2
C4501
22
R4504
0.01
C4506
0.01
C4505
100k
R4527
S-T111B33MC-OGSTFG
IC4501
6MHz
+3.3V REGULATOR
SN74LVC2G53DCUR
IC4503
0.1
C4504
0.1
C4503
SN74LVC2G53DCUR
IC4502
22
R4507
SIGNAL SELECTOR
SIGNAL SELECTOR
MA+B
100k
R4526
RB715W-TL
D4501
SYS3.2V
GND
USB_VBUS
15k
RB4501
100k
R4004
RB715W-TL
D4004
15k
RB4502
USB_XCHGON
USB_HPWR
XACC_IN_HUB
USB_T_N
USB_T_P
USB_PUP
1500
R4525
JL4011
JL4010
100
R4025
RT1N44QU-TP-1
Q4002
JL4009
0
R4016
5P
CN4003
USB_XDET
0
R4029
0
R4015
USB_ID
DEBUG_TXD
DEBUG_RXD
USB DETECT
(USB)
VBUS
D-
D+
ID
GND
TDZTR6.2B
D4007
0.8A
R4010
32V
0
0
0.2
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3.6
0
0
3.6
3.6
0
0
3.6
0.1
0.1
1
2
3
4
5678
1
2
3
4
5678
1
2
3
4
5
6
7
8
9 10 11 12
15
16
17
18
19
20
21
22
23
24
29
30
31
32
33
34
35
36
43
44
45
46
47
48
13 14
25
26
27
28
37
38
39
40
41
42
49
50
51
52
53
54
55
56
57
1
2
3
4
5
1
2
3
5
IC4503
IC4502
MAIN BOARD
(7/10)
IC4501
A
10
1
H
B
11
C
7
8
I
F
9
6
4
3
G
D
5
E
12
4
2
ET002
(CHASSIS)
Note:
IC4505 cannot exchange with single. When this part is dam-
aged, exchange the entire mounted board.
Содержание NV-U74
Страница 57: ...MEMO NV U74 57 ...