Norcent LT2790BK, Руководство по обслуживанию

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27’’ LCD TV Norcent LT2790BK
36
GPIO1
C4F4
22pF
C456
0.1uF
+
C4J3
10uF/16V
Q403
2SC2412K
EEPROM_WP 3
UART0RX
FB411 300 OHM
I2C0CLK
R4L8
10K
"1110" - Boot from 8-bit NOR Flash
C4K5
10pF
D5V
I2C1DATA
TAPSEL
I2C1DATA
I2C1DATA
UART1RX
R467
1K 1/16W
VCC3V3_G9
晶振匹配，由 10 PF
改为 22 PF
5/12 HR/JASON
VCC3V3_G9
TMS
VCC3V3_G9
C4F3
22pF
VCC9A
IRR
U419 NC/ PCA9554DH
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
A0
A1
A2
I/O0
I/O1
I/O2
I/O3
VSS I/O4
I/O5
I/O6
I/O7
INT
SCL
SDA
VDD
VCC3V3_G9
RXD_OUT1
SIO I/F
TMS
GPIO0 TP420
1
C497
1uF
GPIO3
R427 1K 1/16W
R438 4.7K 1/16W
TAPSEL
UART1RX
I2C1CLK
TRSTN
CN402
NC/ 33G8009 3
1
2
3
C4J5
0.1uF/16V
C4K4
10pF
I2C1CLK
TXD_OUT1
C495
1uF
TCK
R416 33 1/16W
TDI
PU1
R4H4
4.7K 1/16W
TP401
1
TCK
TP402
1
TRSTN
GPIO3
TO RF SW
B
Page 06 - GPIO I/F
B
6 19 Wednesday, May 17, 2006
715T1961-
Title
Size Document Number Rev
Date: Sheet of
R440 4.7K 1/16W
I2C0DATA
CN411
NC/ E-JTAG 2X7
1 2
3 4
5 6
7 8
9 10
11 12
13 14
R4H3
4.7K 1/16W
UART1TX
R4P8
10K 1/16W
I2C0DATA
R436 4.7K 1/16W
I2C0CLK
CHIP ID:42H
VCC3V3_G9
PU2
R433
4.7K 1/16W
D5V
UART0TX
R430
4.7K 1/16W
C498
1uF
232 XCVR
U408
HIN232
13
8
11
10
1
3
4
5
2
6
12
9
14
7
16 15
R1IN
R2IN
T1IN
T2IN
C+
C1-
C2+
C2-
V+ V-
R1OUT
R2OUT
T1OUT
T2OUT
VCC GND
RXD_OUT1
R426 1K 1/16W
VCC3V3_G9
R443
NC/ 1K
R413 5.9K
IRR 15
TDI
RESETN 4,8,15
CN406
1
2
VCC9A
JTAG_RSTN 15
TDO
R437 1K 1/16W
R466
NC/ 1K
R429 4.7K 1/16W
R441 1K 1/16W
GPIO2
Super I/O
U401E
ZR39660BGCG
N1
P1
L3
M1
M3
M2
R1
P2
K4
K2
L1
K3
K5
M4
N5
L4
F1
G2
H3
G1
H1
J1
J2
J3
H2
J4
W4
V5
U6
Y4
K1
N3
G3
UART0TX
UART0RX
UART1TX
UART1RX
I2C1CLK
I2C1DAT
I2C0CLK
I2C0DAT
TDO
TDI
TCLK
TMS
TRSTN
CLKIN
RESETN
IRR
TPA0
TPA0_N
TPB0
TPB0_N
TPA1
TPA1_N
TPB1
TPB1_N
TPBIAS0
TPBIAS1
GPIO0
GPIO1
GPIO2
GPIO3
TAPSEL
CLKOUT
1394_RSET
* Key Pin 12
R4L7
4.7K
I2C0CLK
I2C1DATA 9,15
RF_SEL
VCC3V3_G9
PU1
I2C0CLK 2,12
I2C0DATA 2,12
TDO
I2C:
0xA0-0xAE
TP419
1
VCC3V3_G9
TXD_OUT1
CN410
NC/ 33L3802 3
1
2
3
GPIO0
TXD_OUT 11
UART0TX
R445
NC/ 1K
I2C1CLK 9,15
CN107
CONN
1
2
3
GPIO0
VCC3V3_G9
GPIO2
I2C1CLK
GPIO1
R435 1K 1/16W
R439 1K 1/16W
R4H8
NC/ 0 1/16W
R434
4.7K 1/16W
I2C0DATA
RF_SEL
FB410 300 OHM
C4J4
0.1uF
R428 4.7K 1/16W
R432
4.7K 1/16W
C496
1uF
R4H7 NC/ 0 1/16W
VCC3V3_G9
RXD_IN 11
RESETN
D5V
UART1TX
X401
24.576MHz
U412
24LC32A
5
6 8
4
1
2
3
7
SDA
SCL VCC
GND
NC0
NC1
NC2
WP
D5V
D5V
PU2
R431
NC/ 4.7K
UART0RX
JTAG/EJTAG