Haier L42A9 Service Manual page 44

8) M2B MCU
VCC3
U402
CSN 1 8
CS# VCC
SDO 2 7
SO HOLD#
WP 3 6
W# SCK
SDI
4 5
GND SI
MX25L4005AM2C-12G
GND
VCC3
RP400
10KOHM +-5% 1/16W
MCU SDO to EEPROM SDI
MCU SDI to EEPROM SDO
SDO
CSN
SCK
SDI
WP
1 BL_ADJ
10 Video_SEL
0 OHM 1/16W
10 IR_EN R416
0 OHM 1/16W
R417
POWER_KEY
ADC_KEY
L_SEN
R763
RST_N
TSTMD
NC 22K OHM 1/10W
IRDAT
GND
M_SDA
M_SCL
5VSB
C401
0.22uF
U401
1 8
E0 VCC
EPROM_WP
2 7
E1 WC
3 6 M_SCL
E2 SCL
4 5 M_SDA
VSS SDA
M24C32-WMN6TP
GND
VCC3
R431
NC
TSTMD
R434
1K OHM 1/10W 10KΩ 1/10W
GND
System PLL 1.8V POWER
VCC18
C400
0.22uF FB406
V18AUD
1 2
11/18 300 OHM
GND
C411 C413
FB707 SCK 10uF/16V C412 100pF
68R 1/10W 5% 0.1uF25V
GND GND
C781
NC 1NF16V
GND
5VSB
R407 10K OHM 1/16W
R408 10K OHM 1/16W
R754 NC
GND
10K OHM 1/10W U400D
R755
212 107
GPIO33/SPI_SDI GPIO00/UART_TX0
213 108
GPIO34/SPI_CSN GPIO01/UART_RX0
214
GPIO35/SPI_SCK
215 114
GPIO36/SPI_SDO GPIO05/I2SDATO
209 115
GPIO30/SPI_WP GPIO06
116
GPIO07
206 117
GPIO27/PWM_B/DBLC GPIO08
207 118
GPIO28/PWM_C GPIO09
208 121
GPIO29/PWM_D GPIO10
122
GPIO11
SARIN0 220 123
SARIN0 GPIO12
SARIN1 221 124
SARIN1 GPIO13
222 125
SARIN2 GPIO14
223 126
SARIN3 GPIO15
127
GPIO16
113 128
RST_N GPIO17
112 216
TSTMD GPIO37
218 217
GPIO39/IR_RX GPIO38
224
R444 GPIO41
225
R445 GPIO42
210 226
GPIO31/MSDA GPIO43
211
GPIO32/MSCL
100 OHM 1/10W
100 OHM 1/10W
HX6202A
R420
R421
RP403
4.7K OHM 1/10W
4.7K OHM 1/10W
R424 10KOHM +-5% 1/16W
5VSB
1M OHM 1/10W
X400
24.576MHz
C408
33pF C409
33pF
GND GND
5VSB
1 2
D403
BAV99
+ C410
47uF/16V
R430
1 Q403
PMBS3906 GND
R459 R427
SYS_RST
1KΩ 1/10W 100Ω 1/10W
R446
+ C414
10uF/16V R432 10K OHM 1/16W
C415
10KΩ 1/10W 100pF
GND
GND
5VSB
LEDY
R401 1
Q400
4.7K OHM 1/16W
MMBT3906
10 IRDAT
LEDG R402 1 R403
4.7K OHM 1/16W 200 OHM 1/16W
Q401
POWER_KEY
MMBT3906
ADC_KEY
R404
200 OHM 1/16W
ZD606 ZD608
RLZ5.6B
RLZ5.6B
ZD607
RLZ5.6B
5VSB
GND
R759 0 OHM 1/10W
R760 0 OHM 1/10W
UT_TX
UART_TX 4
UT_RX
UART_RX 4
R448 0 OHM 1/16W
EAR_DET 7
AMP_MUT 7
MUTE_HPHONE 7
OFF_MUTE 5
EPROM_WP
EDID_WP 2,4
HA5V_DET 2
HB5V_DET 2
HC5V_DET 2
PANEL_ON 9
LEDY
LEDG
STY AMP_MUT 7
BL_ON 1
POWER_ON 1,10
R451
T_SDA 3
R452
T_SCL 3
PW_ON 1
0 OHM 1/16W
0 OHM 1/16W
5VSB
VCC3
R447
5K6 1/16W 5%
RST_N
Q410 C452 C453
PMBS3904 NC 10uF/16V
GND GND
44
FB415 300 OHM
VCC3
FB400 NC 300 OHM
5VSB
FB401 300 OHM
L_SEN
FB402 300 OHM
1 2 FB403 300 OHM
FB404 300 OHM
1 2 FB405 300 OHM IRVCC
IRDAT 1 2 IR_D
LED_Y L_Y
1 2
LED_G L_B
1 2
PW
1 2
ADC
1 2
GND VCC3
GND
NC NC
T_SCL R412
T_SDA R413 NC
NC
Master IIC
UT_RX R414
UT_TX R415 NC
NC
RS-232
UT_RX R418 NC
SP400
NC
GND
UT_TX
R419 NC
5VSB
SP407
NC
R425
IRDAT
Q402 GND
NC
NC
SP409
NC
GND
GND
GND
ZD609
CONN
C783 RLZ5.6B
1000pF
L_SEN
10
9
IRVCC 8
IR_D 7
L_B 6
L_Y
5
4
ADC
3
PW
2
1
GND
CN400
NC
1
2
3
SP146 4
SP145 NC
NC
CN401
NC
5VSB
1
2
3
4
SP148
SP147 NC
NC
CN402
GND
M_SCL
SP406
NC
CN403
NC GND
M_SDA
5VSB
SP408
NC
GND
AOC HOTEL