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Acer 390 Series Service Manual Page 186

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+3.3V
1
R265
22R3
2
AVDD
1
C333
C330
2
ST22U
SCD1U
+3.3V
C332
SC100P
1
C174
C343
2
SCD1U
SCD1U
C180
C336
ST10U16VBM
XTAL-14.318MHZ
SC10P
C337
SC10P
3
$P33CLK
9
$VGACLK
11
$CARDCLK
2
$P31CLK
1
+3.3V
$SMBDATA
1,3,7,12
1
1,3,7,12
$SMBCLK
CLK_SEL1
CLK_SEL0
0
0
0
1
R312
1
2
33R3
C331
C178
CX14
SCD1U
SCD1U
SCD1U
A
V
D
U39
D
2
1
AVDD
X3
2
REF0
3
VSS
1
4
XTALIN
5
XTALOUT
6
R297
REF1
RX40
1
2
7
VDDQS
33R3
1
2
0R3
8
PCICLK_F
9
VSS
R295
1
2
10
PCICLK0
1
R300
2
33R3
11
PCICLK1
1
2
12
33R3
PCICLK2
13
R313
PCICLK3
14
33R3
VDDQS
15
PCICLK4
16
VSS
17
EPCICLK
18
VSS
RX20
19
VDDQS
2
20
PWR_DWN#
SEL1
21
SEL1
22KR3
22
R296
VSS
1
2
23
SDATA
2
0R3
24
SCLK
R288
CY2272
0R3
+5V
FREQ.
14
VCC
60.0MHZ
2
D
66.6MHZ
KBD14M
3
CLK
7
GND
UY1
R310
1
2
1
A
2
9,23
$VGA14M
B
33R3
3
GND
NC7SZ384-2
3
TV_EN
+5V
C325
1 4 4
SCD1U
5
6
7
U38A
1 4 1
2
3
7
SSAHCT125
IO_VOLTAGE
CX15
SCD1U
C176
C175
SC1U16V5ZY
SC1U16V5ZY
VDDQS 48
R286
USBCLK 47
1
IOCLK 46
TP4
33R3
VSS 45
TP-1
CPUCLK0 44
R299
CPUCLK1 43
1
2
VDDCPU 42
33R3
CPUCLK2 41
CPUCLK3 40
VSS 39
R289
SDRAM0 38
1
2
R284
SDRAM1 37
1
2
33R3
VDDQS 36
33R3
R287
SDRAM2 35
1
2
SDRAM3 34
1
R283
2
33R3
VSS 33
33R3
SDRAM4 32
TP3
SDRAM5 31
TP-1
VDDQS 30
RX18
CPU_STOP# 29
1
2
$CPUSTP#
3
PCI_STOP# 28
0R3
$PCISTP#
3
VSS 27
RX19
SEL0 26
1
2
SEL2 25
SEL2
0R3
+5V
C334
CX16
SCD1U
SC1KP
U37A
4
R124
Q 5
1
2
P R
CLK7M
13
33R3
1
RX32
Q 6
DUMMY-C3
C L
SSHCT74
2
1
+5V
VCC 5
+5V
CY1
SCD1U
BE# 4
RZ6
1
2
+5V
10KR3
3
1
QZ1
2N7002
2
R271
1
2
MODEM14M
21
33R3
R102
U38B
1
2
G14.318M
3
33R3
R272
1
2
KBD14M
SSAHCT125
33R3
R257
1
2
AUDIO14M
17
33R3
R256
1
2
SIO14M
14
33R3
2
$USBCLK
3
R294
1
2
$CPUCLK
1
3
$SLOWDWN
33R3
$L2CLK
5
R298
1
2
$31CLK
2
33R3
$SDRAM_CLK0
6
$SDRAM_CLK1
6
$SDRAM_CLK2
7
$SDRAM_CLK3
7
+5V
1
R246
100KR3
2
1,13
CLK_SEL0
+5V
1
2
1,13
CLK_SEL1
Title
Size Document Number
A3
Date:
M
G
K
O
1
B
D
4
D
E
.
1
M
3
4
1
1
M
4
8
M
M
1
1
1
RX33
RX34
RX35
DUMMY-C3
DUMMY-C3
DUMMY-C3
2
2
2
A
S
U
I
D
O
I
1
O
4
1
M
4
M
1
1
RX36
RX37
DUMMY-C3
DUMMY-C3
2
2
1
R133
0R3
2
R139
CLKDWN
1
2
DUMMY-R3
+3.3V
+3.3V
1
R130
47KR3
U11C
1 4 1 0
2
RX38
9
8
1
2
SEL2
0R3
7
SSLVT125
CLKDWN
+3.3V
+3.3V
1
R91
R245
100KR3
U11D
47KR3
1 4 1 3
2
RX39
12
11
1
2
SEL1
0R3
7
SSLVT125
ACER TAIPEI TAIWAN R.O.C
CY2272 CLOCK GENERATOR
390 ACERNOTE LIGHT
REV
96183
SD
August 7, 1997
Sheet
8
of
23

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