Sharp LC-26SB25E Service Manual page 95

11. CEC MCU
1 2
A
0402/SMD
R450
1
2 R451
0402/SMD
3
B
CN450
NC/63383 3P 2.0mm
C
D
E
CN451
CEC_PWR
RXD_CEC
1
2
TXD_CEC VGA_HIN
3
VGA_VIN
HDMI_CEC
NC/63383 3P 2.0mm
RS232_for debug
F
G
H
1 2
3 4 5
+3V3SB
NC/33R 1/16W 5% uP_SCL
NC/33R 1/16W 5% uP_SDA
CEC_MCU ISP
RESET_CECMCU: from LOW to HIGH
(CEC MCU Reset)
CEC_PWR:
Low: Turn on power switch of DV33SB(MT538X uP VCC)
+3V3SB
0402/SMD
X450
R452 NC/33R 1/16W 5%
1 2
C450 NC/32.768KHz C451
RESET_CECMCU
R462 NC/33R 1/16W 5%
R464 NC/33R 1/16W 5%
R467 NC/33R 1/16W 5%
R469 NC/33R 1/16W 5%
R471 NC/33R 1/16W 5%
R457 NC/33R 1/16W 5%
0402/SMD
NEAR ZD701
AUDIO_PWR_UP:
AUDIO AMP PWR ON: High
AUDIO AMP PWR OFF: Low
3 4 5
6 7
R480 NC/10K 1/10W 5%
RESET_CECMCU
C457
NC/4.7UF 10V
U451
RESET_CECMCU
2
RESET
3
Vcc
1
GND
R456
NC/100K 1/16W 5%
NC/LM809M3X-2.93
0402/SMD
+3V3SB FB450
1 2
NC/220R/400mA
+ C456
C453
NC/100N 16V NC/47uF 16V
0402/SMD SMD
U450
0402/SMD
1 20
32KOSCO VDD_RTC
R460 NC/33R 1/16W 5%
2 18
32KOSCI GPIOA0/AD0
R461 NC/33R 1/16W 5%
4 17
NRST GPIOA3/AD3/IR
R463 NC/33R 1/16W 5%
5 16
PWM1/GPIOC1 GPIOA4/SCL3/P1.0
6 15
RXD/IRQ3/GPIOB7 GPIOA5/SDA3/P1.1
7 14 R468 NC/33R 1/16W 5%
TXD/IRQ2/GPIOB6 GPIOA6/SCL1
R470 NC/33R 1/16W 5%
8 13
HIN/GPIOB5 GPIOA7/SDA1
R472 NC/33R 1/16W 5%
9 12
VIN/GPIOB4 GPIOB0/SCL2
R473 NC/33R 1/16W 5%
10 11
IRQ1/P1.3/GPIOB3 GPIOB1/SDA2
0402/SMD
NC/WT6702F_SS200
R487
+3V3SB
AUDIO_PWR_UP NC/4K7 1/16W 5%
DV33SB
R486
NC/4K7 1/16W 5%
Q458
NC/MUN2211TIG
LED_G#
R485
LED_G#:
LED_G
Enable: Low
Disable(Stand_By): High NC/4K7 1/16W 5%
6 7
95
LC-26SB25E/S /RU , LC-32SB25E/S
8 9
6,9 KEY_UP_DN_DCSW
1,2,9 +5V_STB
1,2 +3V3SB
6,15 HDMI_CEC
1 CEC_PWR
4,6 MAIN_SCL
4,6 MAIN_SDA
9 LED_G#
9 RC6
9 LED_R#
6,9 LED_G
1,5,6,9,15,16,17 DV33SB
1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17 GND
9,13 U0TX
9,13 U0RX
LED_R#:
13 VGA_HIN
Enable(Stand_By): Low 13 VGA_VIN
Disable: High
6 CEC_INT
+3V3SB
16 AUDIO_PWR_UP
0402/SMD
+3V3SB
R453
NC/4K7 1/16W 5%
KEY_UP_DN_DCSW
RC6_CEC
LED_R#_DRIVE
uP_SCL
uP_SDA R466
INT_CEC NC/0R05 1/16W
0402/SMD
C452
Q456
NC/1N 50V
NC/MUN2211TIG
+3V3SB Q451
NC/2N7002
Q455
NC/MUN2211TIG
Q452
NC/2N7002
Q459
NC/BC847C Q457
NC/2N7002
The item of this page start from "450"
8 9
/RU , LC-42SB55E/S /RU
10 11
CN450 B2
KEY_UP_DN_DCSW
CN451 E2
+5V_STB
C450 E4
C451 E5
+3V3SB
A
C452 F8
HDMI_CEC
C453 D6
CEC_PWR
C456 D6
MAIN_SCL
C457 B7
FB450 C6
MAIN_SDA
Q450 E10
LED_G#
Q451 F10
RC6
Q452 G10
B
LED_R#
Q455 G8
Q456 F9
LED_G
Q457 G10
DV33SB
Q458 F7
GND
Q459 G8
R450 B3
U0TX
R451 B3
U0RX
C
R452 D5
R453 E10
VGA_HIN
R454 E10
VGA_VIN
R455 D8
R456 C7
CEC_INT
R457 F4
AUDIO_PWR_UP
R458 A3
R459 E3
D
R460 E7
R461 E7
R462 E5
R463 E7
+3V3SB +5V_STB
R464 E5
R465 E3
R466 E9
R454
NC/10K 1/10W R467 E5
E
R468 E7
Q450
NC/2N7002 RC6
R469 E5
R470 E7
R478 NC/10K 1/16W 5%
R471 E5
+3V3SB
R472 E7
0402/SMD
R473 F7
LED_R#
R474 D8
R475 A3
F
R476 D8
DV33SB
R477 E3
R478 E10
MAIN_SCL
R479 G8
R480 B6
R481 G8
DV33SB
R482 D8
R485 G7
G
MAIN_SDA R486 F6
R487 F7
U450 E5
DV33SB
U451 C6
X450 D4
CEC_INT
H
10 11