Mitac secret confidential document, 10 audio test error-3 (audio out), J509 – MiTAC 8050QMA User Manual
Page 132
131
80
80
50QMA
50QMA
N/B Maintenance
N/B Maintenance
8.10 Audio Test Error-3 (Audio Out)
U19
Audio
Amplifier
TPA0212
R343
1K
C345
100P
R380
1K
C365
100P
C354
100µ
R379
22
P
22
J7
21
16
ROUT+
ROUT-
1
2
R
Internal Speaker
Connector
C341
100µ
R404
22
L83
BEAD_600Z/100M
L76
BEAD_600Z/100M
C356
1µ
C347
1µ
AMP_RIGHT
20
23
From previous page
RLINEIN
RHPIN
+5VS
7,18
PVDD0/PVDD1
AGND
C342
100µ
L73
120Z/100M
C734
0.1µ
C735
0.1µ
22
SPK_OFF#
GAIN1
3
R362
100K
R741
100K
GAIN0
2
J3
4
9
LOUT+
LOUT-
1
2
L
Internal Speaker
Connector
15,17
DEVICE_DECT
+5VS
R1
Q31
DDTC144TCA
R729
4.7K
GND
LLINEIN
AMP_LEFT
5
6
LHPIN
From previous page
C360
1µ
C355
1µ
19
VDD
+AMPVDD
R61 BEAD_600Z/100M
J509
P
22
No sound from speaker after audio driver is installed.
P
22
P
22
AGND
+5VS
R365
1.3M
SPK_OFF
From previous page
R73
0
D514
BAW56
2
1
3
OPTIN#
GND
R208
1K
R60 BEAD_600Z/100M
R18 BEAD_600Z/100M
R20 BEAD_600Z/100M
Drive
IC
LED
L539
BEAD_600Z/100M
SPDIFOUT
7
8
9
LINE OUT
From previous page
+VA
R400
10K
Q48
DDTC144TCA
DEVICE_DECT#
L547
BEAD_600Z/100M
3
2
1
5
4
L546 0
AGND
AGND
+VA
R775
10K
R381
4.7K
DECT_HP#OPT
+3VS
D
S
G
R1
R754
10K
Q509
AM2301P
Q510
DDTC144TCA
OPTIN#
L538
BEAD
600Z/100M
DECT_HP#OPT
DEVICE_DECT#
L77 BEAD_600Z/100M
MiTac Secret
Confidential Document