Service manual

PPWM1
MXO
PNMI1
MXI
TIMERI
STCCK0
SDA1
STCCK1
USBRRTN
EMDIO
ETXEN
ERXD0
ERXD1
ECRSDV
ERCKI
VCKIN1
SCL1
VCKIN0
SCL0
SDA0
PPWM0
ETXD1
ETXD0
TIMERO
USBXI
USBXO
USBREXT
ATEST
ERSTn
PNMI
ERSTn
EMDC
EMDIO
ETXEN
ETXD0
ETXD1
ERCKI
ERXER
ECRSDV
ERXD0
ERXD1
EMDC
ERSTn
EMDC
EMDIO
ETXEN
ETXD0
ETXD1
ERCKI
ECRSDV
ERXD0
ERXD1
ERXER
IVINB
IVINA ACLK
IX1A
IX2A
IPDn
VCLKA
RCLKASDA
SCL
RESETnP{9}
IRQ1P{9}
ACK18 P{12,17}
EIRQnP{15}
NDWPn P{15}
SDA P{4,9,12}
SCL P{4,9,12}
TSDA P{2}
TSCL P{2}
MUTE1 P{12}
MUTE2 P{12}
SLEEP P{13}
ERXER P{17}
V33
V33
V33
V33
V33
V33 V33
V33
V33 V33
V25 V25
V33
VCC
NMI
Lo=MUTE
Hi=MUTE
Hi=MUTE
C391
33P
C387
.1
R241 47
R232 22
C386
.1
R225 1K
R228
2K
C385
.1
R236 1.5M
Y6 XTAL27.000_Pullable
12
3
U30
24LC256I
SDA
5
SCL
6
VCC
8
GND
4
A0
1
A1
2
A2
3
WP
7
R224 4.7K
TP32
Small
1
R235 1.5M
R240 47
C380
.1
R233 22
R234
3.3K
Y5 XTAL27.000
12
3
R229
2K
X1
ICS422-27
ICS422-27-TSSOP24
X1A
14
X2A
13
VIN
12
VCLK
2
REF
11
ACLK
19
GND_A
18
GND_A
21
GND_V
24
SDA
6
PD
22
VDD_P
15
VDD_V
23
VDD_V
1
VDD_V
3
VDD_V
10
GND
16
GND
9
GND_I2C
8
GND_V
4
VDD_I2C
5
VDD_A
17
VDD_A
20
SCL
7
R243 47
TP27
Small
1
C379
0.1uF
J7
ETHERNET
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
R239 47
R230 22
C381
33P
C383
33P
R244 220K
J8
CON4_NC
1
2
3
4
C384
33P
R237 10K
Y4 XTAL48.000
12
3
R242 220K
SW2
SW_MOM_4P
12
43
C390
33P
R231 22
C388
0.1uF
J13
CON6_NC
1
2
3
4
5
6
R226
2K
C389
0.1uF
U29F
PWM2030
SCL0
W3
SDA0
W2
SCL1
Y2
SDA1
W4
USBDp
J26
USBDm
K26
USBPON
C25
USBXO
L25
USBREXT
K23
ERCKI
U1
ECRSDV
U2
ERXD0
U3
ERXD1
U4
ETXEN
V1
ETXD0
V2
XI
G26
XO
H25
TMS
D19
TDO
B22
TDI
C22
TCK
D22
TRST
D21
TIMERO
AD2
NMI
AF3
INT0
AD4
INT1
AE4
USBXI
M26
RESET
B24
TEST
C23
USBOVC
D24
TIMERI
AE3
STCCK0
C21
EJRST
A23
DIVRST
B23
STCCK1
B21
VCKIN0
C20
VCKIN1
B20
PWM0
A22
PWM1
A21
ETXD1
V3
EMDC
V4
EMDIO
W1
GPIO0
P2
GPIO1
P3
GPIO2
P4
GPIO3
R1
GPIO8
T3
ATEST
L24
USBRRTN
K24
TP26
Small
1
C382
33P
R227
2K
R238 47
ViewSonic Corporation Confidential - Do Not Copy N4261w-1M
36
9.6 PWM2030 PERIPHERALS/CLOCKS