Lenovo LXM-L19BH Service Manual page 21

AUDIO_STBY_MUTE
{4} PWM2/GPIO13
CN601
1 R601 10K 1/16W
2
3
4
5
R602
10K 1/16W
PHONEJACK GND
C611
100pF
GND
{4} PWM1/GPIO12/VOLUME
All manuals and user guides at all-guides.com
C604 0.47uF/16V
C606 0.47uF/16V
D601
R603 100 1/16W
D602 LL4148 R604
LL4148 10K 1/16W
R605 100 1/16W
C609 C610
1uF 1uF
C612
100pF
GND
R610
PWM1/GPIO12/VOLUME
220K 1/16W
C613
0.1uF
GND
+12V
C601 C602
+ +
470uF/16V 470uF/16V
U601
TDA7496L
4 17
INL OUTL
9 14
INR OUTR
6 10
VOLUME SVR
11 7
STBY VAROUT_R
12 5
MUTE VAROUT_L
+ C608
470uF/16V
GND GND
Page 21 of 44
Lenovo LXM-L19BH
C603
0.1uF
GND
C605 470uF/16V
C607 470uF/16V
R606 R607
1K 1/16W 1K 1/16W
Connect two grounds at single point.
GND
CN602
4
3
2
1
CONN
GND