MiTAC 7521 N - Circuit Diagram

90
7521
7521
N/B MAINTENANCE
N/B MAINTENANCE
POWER IN
P25
PJ501
PL1, PF1
PD2
PWR_VDDIN
P25
VDD5
P23
F5, U32 Q26
+S5V
Q27
VDD5S
P23
P23
PU1
ADINP
P26
P25
PD1, PD3,
PL4
D/VMAIN
VMAIN
P29
PQ502
PQ503,PU9
+S3V_P
P27
JO4
+S3V
P29
PQ10
S1.8V
P29
PQ504
+3V
P29
JO6
+S1.8V
P29
PU13,PU4
1.8V
P28
PQ14
2.5V
P29
JO9
+2.5V
P29
+S12V
PU9,PQ7,PQ9
PL502,PU501
P27
PU9,PQ7
PQ9,PL502
+S5V_P
P27
PQ3
+5V
P29
J01
+S5V
P29
PQ501
+12V
P29
PL5,PU14,PU5,PU6,PU7
PU10,PU11,PU12,
P30
VCC_CORD
7.1 NO POWER:
When the power button is pressed, nothing happens ,power indicator does not light up.
PU13,PU3
1.5V
P28
JO11
+1.8V
P29
P29
:Page 29 on circuit diagram.
PD1, PD3,
PL4
:Through by parts PD1,PD3,PL4.
Note:
L25
ICVCC
P5
L23
LVDSVCC
P5
L11
PLLVCC
P5
L532
DACAVDD
P5
L54,R214
DCLKAVDD
P5
L55,R223
ECLKAVDD
P5
U4
VA
P29
JS15
+5VS_FDD
P13
JS14
+5VS_HDD
P13
JS501
+5VS_CDROM
P13