Lenovo Y27g RE, Service Manual

Page: 30 / 108

30
USB_PW_ON 3
USB_PW_ON
KEY1
CN411
COMM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
LED_STB 3
LED_STB
R422
NC/0R05 1/10W
+5V
+5V
R424
0R05 1/10W
R423
NC/0R05 1/10W
3V3
LED_PWR_EN 3
PWR_MODE 3
R404
200R 1/10W 5%
R409
47K 1/16W 5%
R417
100K 1/16W 5%
R408
10K
R414
4.7K1/16W
э ミ Α
Q401
AO3401A
R416
10K
C404
10UF 25V
R415
10K
R401
20K 1/16W
R406
4.7K1/16W
C408
100NF 25V
R413
10K
R405
10K
R403
20K 1/16W
Q403
AO3401A
R407
100K 1/16W 5%
R411
330R 1/16W 5%
R402
20K 1/16W
CN406
NC/CONN
1
2
3
4
5
6
7
+2.5V_UC
3V3
+2.5V_UC
+2.5V_UC
+2.5V_UC
IN
10
+5V
TP28
OUT
10
IN
10
IN
10
IN
10
IN
10
IN
10
IN
10
IN
10
IN
10
IN
10
IN
2
IN
2
IN
10
OUT
10
BI
2
OUT
10
OUT
10
OUT
10
IN
10
OUT
2,6,7
IN
10
R7070
0R05 OHM
CN418
CONN
1 2
3 4
5 6
7
8
Reserve CN408 -
20131209
"L" t o Enable USB DC/DC
BUTTONS_PIN_4
BUTTONS_PIN_5
TP29
BUTTONS_PIN_6
For touch key SDA
For touch key SCL
CN412
CONN
2
4
6
8
10
12
14
1
3
5
7
9
11
13
GND
GND
PKEY
GND
GND
GND
R480 NC/0R05 OHM
GND
GND
GND
GND
TP15
GND
JACK_DET1 2
GND
CN408
CONN
1
2
3
4
5
6
f rome NV R2
BD(pitch 2.0/13pin
to
pitch1.25mm/13pin)
PWR_MODE
R7074
0R05 OHM
LED_PWR_EN
EEPROM_WP 10
Q404
LMBT3904LT1G
C403
1000pF 50V
0V
Vgs th = 0.5V m in, 0.7V typ, 1V m ax
2.5V 1.71V
KEY2
BUTTONS_PIN_4
BUTTONS_PIN_5
FP_UART_TX
BUTTONS_PIN_6
FP_UART_RX
MONITOR_LED_B
MONITOR_LED_BD
MONITOR_LED_BR MONITOR_LED_B
MONITOR_LED_G_BUFF
MONITOR_LED_B_BUFF
MONITOR_LED_BRR
MONITOR_LED_G
MONITOR_LED_G
MONITOR_LED_GD
MONITOR_LED_GR MONITOR_LED_B_BUFF
MONITOR_LED_R
MONITOR_LED_G_BUFF
PNL_LEDBD
PNL_LEDGD
PWR_GRP_2_GOOD
UC_HDR2
SY S_LCD_TURN_PANEL_ON_N
SYS_RESET_OUT_N
UC_RST*
TP_MICRO_PIN22
TP_MICRO_PIN23
TP_MICRO_PIN21
UC_TEST
50OHM_NETCLASS2
UC_RST*
UC_TESTR
UC_TEST
2.5V
R412
200R 1/10W 5%
2.5V
+2.5V_UC
1.71V
Vgs th = -0.3V m in, -0.75V typ, -1.2V m ax
GND
KEY 1
ZD
40
2
R
LZ5
.6
B
1
2
GND
+2.5V_UC
3V3
ZD
4
03
RL
Z
5
.6
B
1
2
GND
PKEY
C
491
0.
1U
F
16V
C4
9
2
0.
1U
F
16V
Vgs th = 0.5V m in, 0.7V typ, 1V m ax
ZD
40
4
RL
Z
5.
6B
1
2
C4
9
3
0.
1U
F
16V
GND
ZD
40
5
RL
Z
5.
6B
1
2
GND
C4
9
4
0.
1U
F
16V
R765
0R05 OHM
BC_EN 3
U401
MSP430G2553IPW28
DVCC
1
P1_0
2
P1_1
3
P1_2
4
P1_3
5
P1_4
6
P1_5
7
P3_1
8
P3_0
9
P2_0
10
P2_1
11
P2_2
12
P3_2
13
P3_3
14
P3_4
15
P2_3
16
P2_4
17
P2_5
18
P3_5
19
P3_6
20
P3_7
21
P1_6
22
P1_7
23
RST*
24
TEST
25
P2_7
26
P2_6
27
DVSS
28
WTI Jerrel 9/21
mail
EEPROM_WP
OEM MODEL Size
Rev
Date
Sheet of
TPV MODEL
PCB NAME
称爹
T P V ( Top Victory Electronics Co . , Ltd. )
Key Component
絬 隔 瓜 絪 腹 A
Custom
8 11 Thursday , March 24, 2016
715G8134-M0A-000-0060
< 称爹 >
08_UP interf ace
R421
0R05 1/10W
OUT
4
GND
R418
NC/10K
PWR_GRP_2_ENABLE
(PS_ON)
C4
90
0.
1U
F
16V
R434 NC/0R05 1/10W
R433 0R05 1/10W
R426 100R 1/16W 5%
R425 100R 1/16W 5%
R427 100R 1/16W 5%
ZD
40
1
RL
Z
5.
6
B
1
2
debug connector
R428 NC/0R05 OHM
R420 NC/0R05 OHM
R419 0R05 OHM
UP1
UP2
UP3
UP4
DN6
DN5
DN4
DN3
modif y 470
modif y 1K
DN2
DN1
UP1 UP2
UP3 UP4
DN1 DN2
DN3 DN4
DN5 DN6
R435
10K
+5V
Q402
LMBT3904LT1G