Lenovo Y27g RE Service Manual page 30

+5V
R405
10K
2.5V 1.71V MONITOR_LED_GD
R406
4.7K1/16W
MONITOR_LED_G MONITOR_LED_GR
Q402
10
IN
LMBT3904LT1G
R408
10K
GND
Vgs th = 0.5V m in, 0.7V typ, 1V m ax
GND
+5V
MONITOR_LED_BD
R435
10K
2.5V 1.71V
R414
4.7K1/16W
MONITOR_LED_B MONITOR_LED_BR Q404
10
IN
LMBT3904LT1G
R416
10K
GND
Vgs th = -0.3V m in, -0.75V typ, -1.2V m ax
GND
Vgs th = 0.5V m in, 0.7V typ, 1V m ax
MONITOR_LED_G_BUFF
10
IN
modif y 470
R404
200R 1/10W 5%
PNL_LEDGD
0V
Q401
AO3401A
3V3
R407 R421
100K 1/16W 5% 0R05 1/10W
+5V
GND
R422
NC/0R05 1/10W
MONITOR_LED_B_BUFF
10
IN
modif y 1K
R412
200R 1/10W 5%
PNL_LEDBD
R413
10K 2.5V
Q403
AO3401A
MONITOR_LED_BRR
R415
10K 3V3
R423
NC/0R05 1/10W
+5V
R424
0R05 1/10W
+2.5V_UC
R433
3V3
R434
BUTTONS_PIN_4 R425
10
IN
BUTTONS_PIN_5 R426
10
IN
BUTTONS_PIN_6 R427
10
IN
debug connector
+2.5V_UC
TP15
CN412
UC_HDR2 14
UC_TEST 12
10
IN
DN6 10
50OHM_NETCLASS2
DN4 8
6
DN2
4
UP4
2
UP2
CONN
+2.5V_UC
+2.5V_UC
U401
R417 MSP430G2553IPW28
100K 1/16W 5%
1
DVCC
PWR_GRP_2_GOOD 2
TP29
P1_0
FP_UART_TX 3
2
IN P1_1
4
FP_UART_RX
2 P1_2
IN
BUTTONS_PIN_4 5
10
IN P1_3
BUTTONS_PIN_5 6
10
IN P1_4
7
BUTTONS_PIN_6
10
IN P1_5
8
USB_PW_ON
3 USB_PW_ON P3_1
LED_STB 9
3 LED_STB P3_0
TP28 MONITOR_LED_R 10
P2_0
11
MONITOR_LED_G
10 P2_1
OUT
MONITOR_LED_B 12
10
OUT P2_2
13
P3_2
14
P3_3
30
CN418
0R05 1/10W
NC/0R05 1/10W
CONN
R401 R402 R403
20K 1/16W 20K 1/16W 20K 1/16W Reserve CN408 -
20131209
CN406
7
100R 1/16W 5% KEY 1
6
100R 1/16W 5% KEY2
5
100R 1/16W 5% PKEY
MONITOR_LED_B_BUFF 4
10
IN
MONITOR_LED_G_BUFF 3
10
IN
2
1
NC/CONN
GND GND GND
GND
GND GND
+2.5V_UC
R409
DN6
47K 1/16W 5%
DN5
DN4
UC_RST* DN3
10
OUT
DN2
13 DN1
11 UC_TESTR
9 DN5 UP4
C403
7 DN3 1000pF 50V
5
DN1 UP3
3
UP3 R411 UP2
1
UP1 330R 1/16W 5% WTI Jerrel 9/21 UP1
mail
GND
+2.5V_UC
C404 C408
10UF 25V 100NF 25V
GND
28
DVSS
SYS_RESET_OUT_N
27
2
P2_6 BI
26 SY S_LCD_TURN_PANEL_ON_N
2,6,7
P2_7 OUT
25 GND
UC_TEST
TEST 10
OUT
24 UC_RST*
10
RST* OUT
23 TP_MICRO_PIN23 R419 0R05 OHM
JACK_DET1
P1_7
22
TP_MICRO_PIN22 R420 NC/0R05 OHM KEY1
P1_6
21
TP_MICRO_PIN21 R428 NC/0R05 OHM PKEY
P3_7
0R05 OHM R7070
20 PWR_MODE
P3_6 PWR_MODE 3
R7074
0R05 OHM
19 LED_PWR_EN
LED_PWR_EN 3
P3_5
18
EEPROM_WP
P2_5 EEPROM_WP 10
17
R480 NC/0R05 OHM
P2_4
16 PWR_GRP_2_ENABLE
4
P2_3 OUT
R765
15 0R05 OHM
"L" t o Enable USB DC/DC
BC_EN 3
P3_4
R418
NC/10K
GND
T P V ( Top Victory Electronics Co . , Ltd. )
絬 隔 瓜 絪 腹
Key Component 08_UP interf ace
Thursday , March 24, 2016
Date
5 6
3 4
1 2
CN408
GND
6
5
4
3
2
1
CONN
CN411
1
f rome NV R2
COMM
2
BD(pitch 2.0/13pin
3
to
4
pitch1.25mm/13pin)
5
6
7
8
9
10
11
12
13
эミΑ
GND
For t ouch key SDA
2 (PS_ON)
For t ouch key SCL
OEM MODEL Size Custom
TPV MODEL Rev A
PCB NAME
715G8134-M0A-000-0060
称爹 <称爹>
Sheet 8 of 11