Lenovo LXM-L19BH Service Manual page 22

+3.3V_DVDD
R446
PPWR
1
{4} PPWR
10K 1/16W C450
NC
GND
{4} GPIO[0..1]
R440 1K 1/16W
GPIO0 1
GPIO1
+5V
R456
NC
C459
NC
GND
+12V +5V
R447 R448 R449
NC NC 0 1/16W
PANEL_POWER
R450 U701
1 8
S1 D1
100K 1/16W 2 7
G1 D1
R451 3 6
S2 D2
4 5 C453
G2 D2
100K 1/16W SI9933ADY-T1 0.1uF
When using
Q403
+12V, U701
PMBS3904 C451 C452
+
should be
SI9953ADY.
0.1uF 100uF
GND
GND GND
+5V
Q401
PMBS3904
R441
330 1/16W
+5V
GND R442 1K 1/16W
1 Q402
PMBS3904
R443
330 1/16W
GND
CN402
KEY_POWER
8
GPIO0/LED_GRN
7
GPIO1/LED_ORANGE 6
LBADC_IN1
5
LBADC_IN2 4
IR
3
LBADC_RET 2
1
GND CONN
LV_O[0..9]
{4} LV_O[0..9]
LV_E[0..9]
{4} LV_E[0..9]
R452
4.7K 1/16W
GPIO0/LED_GRN
+3.3V_DVDD
R454
NC
GPIO1/LED_ORANGE
{4} LBADC_IN1
C457
NC
GND
Page 22 of 44
LV_O0 TX0-O
LV_O1 TX0+O CN403
LV_O2 TX1-O TX0-O
1 2
LV_O3 TX1+O TX1-O
3 4
TX2-O
5 6
LV_O4 TX2-O TXCK-O
7 8
LV_O5 TX2+O TX3-O
9 10
TX0-E
11 12
LV_O6 TXCK-O TX1-E
13 14
LV_O7 TXCK+O TX2-E
15 16
TXCK-E
17 18
LV_O8 TX3-O TX3-E
19 20
LV_O9 TX3+O
21 22
23 24
CONN
PANEL_POWER
LV_E0 TX0-E
LV_E1 TX0+E
GND
LV_E2 TX1-E
LV_E3 TX1+E
C454 + C455
LV_E4 TX2-E
22uF/16V 0.1uF
LV_E5 TX2+E
LV_E6 TXCK-E
LV_E7 TXCK+E
GND
LV_E8 TX3-E
CONNECTOR for PANEL
LV_E9 TX3+E
+3.3V_DVDD
+5V
R444 R445
NC 330 1/16W
CN401
KEY_POWER
1 2
GPIO0/LED_GRN 3 4
LBADC_IN1
5 6
7 8
IR 9 10
{4} IR
11 12
13 14
15 16
PITCH 2.0
GND
NC
Lenovo LXM-L19BH
TX0+O
TX1+O
TX2+O
TXCK+O
TX3+O
TX0+E
TX1+E
TX2+E
TXCK+E
TX3+E
(5mm)
R453
0 1/16W
C456
GND
0.1uF
+3.3V_DVDD
R455
NC
GPIO1/LED_ORANGE
LBADC_IN2
LBADC_IN2
C458
NC
GND GND
{4}