Mitac secret confidential document, 1 no power-4 – MiTAC 8050QMA User Manual
Page 109
108
80
80
50QMA
50QMA
N/B Maintenance
N/B Maintenance
When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.
8.1 No Power-4
+DVMAIN
ADINP
PC532
1000P
PC528
0.01µ
S
D
2
3
1
6
7
8
5
G
PR503
100K
PR502
470K
PQ501
AQ4407
LEARNING
PR505
1M
23
+PWR_VDDIN
PD504
SBM1040
A
K
PQ502
2N7002
U13
Keyboard
BIOS
W83L950D
P
23
SW_VDD3
17
PJ701
POWER IN
PL2
120Z/100M
PC2
0.01U
PL1
120Z/100M
1
2~4
PD501
RLZ24D
PC501
1U
PF1
7A/24VDC
P
31
JO2,JO1
SPARKGAP_6
PR1
10
4
5
6
RS+
OUT
RS-
PU1
PC3
1U
PC1
0.01U
3
VCC
1
GND0
2
GND1
MAX4173FEUT-T
JO502
OPEN-SMT4
PR501
.01
P
31
H8_I_LIMIT
76
I_LIMIT
PC502
0.01U
PR506
4.7K
PC520
0.01µ
PD502
SCS140P
A
K
LEARNING
+3V
+VDD3
C389
4.7µ
D
S
G
+PWR_VDDIN
+VDD3
+3V
+VDD3
Q50
AO3413
Q47
DDTC144WCA
SW_VDD3
C327
0.1µ
R397
100K
D
S
G
Q37
AO3413
U513
NTC78L05
F4
3216FF-1
+PWR_VDDIN
3
IN
OUT
1
P
26
2
C767
1µ
C324
10µ
+VDD5
R340
0
U515
AMS3107
INPUT
OUTPUT
3
P
26
2,4
C689
10µ
+VDD3_AVREF
1
PD505
SCS140P
MiTac Secret
Confidential Document