Service manual

8224 N/B Maintenance
8224 N/B Maintenance
148
8.15 Audio Test Error-3 (Audio Out)
No sound from speaker after audio driver is installed.
Drive
IC
C835
1U
AMP_LEFT
5
6
U524
Audio
Amplifier
TPA0212
C853
100P
R427
0
P24
BJ503
21
16
ROUT+
ROUT-
1
2
L568
600Z/100M
L569
600Z/100M
LLINEIN
LHPIN
C858
1U
C856
1U
AMP_RIGHT
20
23
From previous page
RLINEIN
RHPIN
L564 600Z/100M
4
9
LOUT+
LOUT-
3
4
Internal Speaker Connector
15,17
AMPVDD
L565 600Z/100M
L570 600Z/100M
L572 600Z/100M
J519
AGND
22
SHUTDOWN
Line Out Jack
AGND
7,18,19
C859
0.1U
C860
0.1U
C855
10U
AMPVDD
R865
1K
R863
1K
C834
1U
LED
5
4
2
3
1
7
8
9
DEVICE_DECT#
L81
600Z/100M
SPDIFOUT
From previous page
L73 600Z/100M
L80 600Z/100M
DECT_HP_OPT#
L72
600Z/100M
R846
1K
AGND
D21
BAW56
2
1
3
AMPVDD
R470
4.7K
Q28
DDTC144TKA
AMPVDD
R471
100K
OPTIN#
C857
1U
AGND
AMPVDD
R467
10K
Q515
DTC114TKA
Q27
DTC114TKA
DECT_HP_OPT#
DEVICE_DECT#
SPK_OFF#
AMPVDD
R468
10K
R465
4.7K
R866
22
R864 22
C852
100P
Q517
DDTC144TKA
L567
600Z/100M
AGND
From previous page
R845
33K
BSPK_ROUT+
BSPK_ROUT-
BSPK_LOUT+
BSPK_LOUT-
DEVICE_DECT
R868
10K
R466
10K
+3VS
R459
0
C457
1U
R867
33K
1
2
3
SPK_OFF
From previous page
R1990
0
R1991
0
EAPD
From previous page
D2
BAV70LT1
P44
J504BJ501
P33P44
Daughter Board
31
33
35
37
31
33
35
37
SPK_ROUT+
SPK_ROUT-
SPK_LOUT+
SPK_LOUT-
R402
0
G
S
D
G
S
D
Q36
2N7002
EN_SOUND
From P31 U15
Q37
2N7002
MiTac Secret
Confidential Document