Sharp LC-13S2US, Service Manual

Page: 17 / 94

LC-15S2U-S
17
Pin No. I/O Pin Name Function
1 I Vhold
2 I/O HLF
3 O 1 BIT_MUTE
4 O OPC_LED
5 O VGH
6 I CSYNC
7 I IREM1
8 O BYTE
9 O CNVss
10 I Xcin
11 O Xout
12 I RESET
13 O Xout
14 I Vss
15 I Xin
16 I Vccl
17 I OSCin
18 O OSCout
19 I PSWin
20 O IRQN
21 O BLK
22 O OSD_1
23 O DAC1CS
24 O VDSW1
25 O D_SEL
26 O F_SEL
27 I MRDY
28 I/O SCL2
29 I/O SCL1
30 I/O SDA1
31 I/O SDA2
32 O OSD_R
33 O OSD_G
34 O OSD_B
35 O SUBDout
36 I SUBDin
37 I SCLK
38 O BUSY
39 O MAIN SW
40 O MON SW
41 I EPM
42 I L_ERR
43 O S IN/OUT
44 O PC/VD
45 O TIMELED
46 I CE
47 O AV1/AV2
48 O TV/AV
49 O TEXT-ON
50 O VSHOUT
Pin functions of microprocessor IC (IC2001) RH-iXA622WJN1Q
For closed caption
For closed caption
N.C
For OPC LED lighting
For panel power supply control
Composite sync signal
Remote control
GND
GND ("H" at flash writing)
32 kHz oscillation input
32 kHz oscillation output
Reset at "L"
Microprocessor oscillator connection
GND
Microprocessor oscillator connection
Power supply (3.3 V)
Input of clock for OSD
N.C
Power supply monitor ("L" at power-ON)
Spare
OSD blanking output
OSD Emphasis signal output
Gradation control IC chip selection
Video SW switching 1 output
N.C
N.C
I2C bus open connection switching input
I2C bus serial clock line 2
I2C bus serial clock line 1
I2C bus serial data line 1
I2C bus serial data line 2
OSD R signal output
OSD G signal output
OSD B signal output
Sub-microprocessor data output (T x D at flash writing)
Sub-microprocessor data input (R x D at flash writing)
Clock input at flash writing
BUSY output at flash writing
Main switch ON "H"/OFF "L" (LED power supply control)
N.C
"L" at flash writing
Fluorescent lamp error detection process (Error at "H")
Audio input/output switching (Audio output at "L")
N.C
For LED lighting in working of timer
"H" at flash writing
AV selector switch
AV selector switch
N.C
Panel gate driver voltage control