Laptop User Manual

126
7521
7521
Plus / N N/B MAINTENANCE
Plus / N N/B MAINTENANCE
8.10 AUDIO FAILURE
No sound from speaker after audio driver is installed.
U5
U5
CS4299
CS4299
CODEC
CODEC
20
21
4
5
AC97_SDOUT
AC97_SDIN0
AC97_SYNC
5
8
10
AC’97
CODEC LINK
36
AOUT_R
R64
R61
R52
R49
C81
C80
AOUT_L
35
R33
R34
R31
R45
C62
C71
RHP IN
RLINE IN
LLINE IN
LHP IN
ROUT+
ROUT-
LOUT+
LOUT-
22
15
3
10
C24
U6
TPA0202
Amplifier
Drive
IC
LED
5
4
2
3
1
8
9
7
VA
+5V
L29
L11
L24
L23
L28
L25
L15
R29
R38
+3V
R37
Q6
R43
Q5
+3V
DEVICE DECT#
DECT HP#/OPT
L16
R44
6
R36
R29
R8
R25
Q13
R115
AMP_DOWN
SPDIFOUT
SPDIF
C52
C65
J514
CHARGE
B.D
AMP_SH TDOWN
MUTE IN
11
29
U31
W83626F
24.576MHZ
VA
14,16
HP/LINE
R53
Q7
R75
2
C221
L51
R179
SH18
SH16
SH17
DEVICE_DECT#
L18
AUDIO OUT
CODEC XIN
SH24
SH6
U24
SIS
SIS
630S
U24
VR501
C11
SH17
630S
J510
U
+5V
+5V
U16
L12
SPK_OFF#
Q8