Sony NV-U74, Service Manual

Page: 28 / 58

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
EN VSS NC
OUT
IN
6MHz
+3.3V REGULATOR
SN74LVC2G53DCUR
IC4503
COM
INH
GND
GND
A
Y2
Y1
VCC
0.1
C4504
0.1
C4503
SN74LVC2G53DCUR
IC4502
COM
H
GND
GND
A
Y2
Y1
VCC
22
R4507
SIGNAL SELECTOR
SIGNAL SELECTOR
IN
MA+B
100k
R4526
RB715W-TL
D4501
SYS3.2V
GND
USB_VBUS
15k
RB4501
100k
R4004
RB715W-TL
D4004
CY7C66113C-LFXC-CP6737AM
IC4505
D-[0
]
P3[3] GND P3[5] D+[1] D-[1
]
P2[1] D+[2] D-[2
]
P2[3] P2[5] P2[7]
P0[5]
P0[3]
P0[1]
DAC[5]
DAC[3]
DAC[1]
DAC[6]
DAC[4]
DAC[2]
P0[6]
DAC[0]
P2[6] P2[4]
GND
P2[2] P2[0] P3[6]
D+[4]
P1[6]
P1[4]
P1[2]
P1[0]
P1[1]
VCC
DAC[7] P0[7]
P0[4]
P0[2]
P0[0]
VPP
D-[4]
P3[4] P3[2]
D+[3]
D-[3]
P3[0]
XTALOUT
XTALI N
VREF
P1[3]
P1[5]
P1[7]
P3[1]
D+[0]
E-PAD
USB CONTROLLER
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
MAIN
25
BOARD
(10/10)
BOARD
24
MAIN
(10/10)
MAIN
3
BOARD
(1/10)
IC B/D
IC B/D
IC B/D
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
IC4505
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.
(Page 31)
(Page 31)
(Page 22)