Haier LT22M1CWA Service Manual page 48

22"LCD TV
OSDA0
13,19 OSDA0
OSCL0
13,19 OSCL0
15 OSDA1
15 OSCL1
21 BL_DIM
20 OPWM1
12,20 OPWM2
20 MTK_IC_RESET
OXTALO
OXTALI
AVCC_SRV
AVDD33_XTAL
KEY 2
R488 33 OHM 1/10W
KEY 1_MT5335
6 SCART_FS_IN
PWRDET
AVDD33_REG
C_XREG
ORESET#
21 POWER_ON/OFF
+3V3SB +3V3SB
R444 R445
10K OHM 1/10W 10K OHM 1/10W
Q403
13 HDMI_INT
MMBT3904
R420 NC
R461 10K OHM 1/10W
EDID_PRT
R463
10K OHM 1/10W
+3V3SB
FB408
AVCC_SRV
BEAD
C494 C495
1uF/16V 0.1UF16V
+3V3SB
+3V3SB
FB410
AVDD33_XTAL
BEAD
C500 C501
1uF/16V 0.1UF16V
U401B
204
OSDA0
205 207
OSCL0 GPIO_3
63 208
OSDA1 GPIO_4
62 209
OSCL1 GPIO_5
191 59
OPWM0 GPIO_6
202 60
OPWM1 GPIO_7
203 210
OPWM2 GPIO_8
146 211
VCXO GPIO_9
143 212
XTALO GPIO_10
144 214
XTALI GPIO_11
147 215
AVDD33_SRV GPIO_12
145 216
AVDD33_XTAL GPIO_13
152
ADIN4
151
ADIN3
150
ADIN2
149 92
ADIN1 OPCTRL0
148 91
LVDSVDD_EN 7
ADIN0 OPCTRL1
76
OPCTRL2
88 75
AMP_MUTE
AVDD33_REG OPCTRL3
87 90
BL_ON/OFF
C_XREG OPCTRL4
71 89
ORESET_ OPCTRL5 EDID_PRT
72
OPWRSB
MT5335PKU R426
4.7K OHM 1/10W
+3V3SB +3V3SB
R486
NC/10K OHM 1/10W
Q408
13,14 CEC
NC/MMBT3904
R495
NC
DV33
DV33
R456
10K OHM 1/10W
U405
R459 8 1 C492
VCC NC
33 OHM 1/10W 7 2 1uF/16V
WC NC
OSCL0 6 3
SCL NC
Q406 OSDA0 5 4
SDA VSS
MMBT3904
M24C16
IIC ADDRESS "A0"
DV33
FB409
KEY 1_MT5335
AVDD33_REG
BEAD
C498 C499
1uF/16V 0.1UF16V
DV33
R448
CI_PDD3 20
1K OHM 1/10W
CI_PDD4 20
CI_PDD5 20
NC/LL4148
CI_PDD6 20
PWRDET
CI_PDD7 20
CI_POWE# 20
CI_OEB 20
CI_ALE 20
Adjust the power on timing
CI_CLE 20
R454
C_XREG
1 OHM +-5% 1/10W
C491
4.7uF/10V
CI_INT 20
17
21
The divider only for A version IC
+3V3SB
R487
NC/10K OHM 1/10W
13 TURN_ON
uP default High
High ON
13 STANDBY
uP default High
High ON
13
D403
KEY 1
2 1
SCS140V For OTS pull high
48
Haier LT22M1CWA&LT22M1CW
+3V3SB
R447
+
C488
NC/1K OHM 1/10W
NC/220uF/10V
ORESET#
R449
Q404
NC/MMBT3904
NC/220 OHM 1/10W
D401 R450
NC/47K OHM 1/10W
+3V3SB +5VSB
R497
R498
NC
820 OHM 1% 1/10W
R499
3.344V
1.8K OHM 1% 1/10W
U408
ORESET# 2
RESET
FOR SPARK TEST
MAX809STRG
Low Reset (Low--> High 3.3V)
56T 643 35 MAX809STRG(140ms)
56T 643 5B G690H293T73UF(140ms)
For OTS +3V3SB_uP
R462
+5V
47K OHM 1/10W
R427
3K OHM 1/10W
TURN_ON R453
NC/0 OHM 1/10W
C441
NC/1000pF/25V
Low OFF
STANDBY R455
NC/0 OHM 1/10W
C452 +3V3SB_uP
NC/1000pF/25V
Low OFF
R452
+5VSB
C493
0 OHM 1/10W
4.7uF/10V
+3V3SB_uP
Keypad
+3V3SB_uP
power
R489
3.9K OHM 1/10W
KEY 1 R466 0 OHM 1/10W
KEY 1
KEY 2 R467 0 OHM 1/10W
C496 C497
R458
1000pF 1000pF
3.9K OHM 1/10W NC/470K OHM 1/10W
+3V3SB_uP
R446
NC
Y 401
TXC
OXTALI 2 1 OXTALO
60MHz
C489 C490
10pF 10pF L401
0.82UH
Third-Tone Crystal
C401
1000pF
+5V
R460
1K OHM 1/10W
R428
1K OHM 1/10W
Q405
MMBT3906
Pull high
潮伐
LED
CN404
1
2
3
12,13 OIRI
4
5
6
Lock Type
7
+3V3SB_uP
8
9
10
11
CONN
ZD410 ZD411
UDZSNP5.6B UDZSNP5.6B
R468 R469
NC/470K OHM 1/10W