Sharp LC-20S4U-S - 20" LCD TV, Service Manual And Parts Listparts List

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LC-20S4U-S
32
Pin No. Pin Name I/O Pin Name Function
1 P96 O N.C
2 P95 O N.C
3 P94 O N.C
4 P93 O N.C
5 P92 O N.C
6 TB1in I CSYNC Composite sync signal
7 TB0in I IREM1 Remote control signal
8 BYTE I BYTE Connected to GND
9 CNVss I CNVss Connected to GND (connected to Vcc1 for CNVSS at flash write)
10 Xcin I Xcin 32-kHz quartz oscillator (for clock count)
11 Xout O Xout 32-kHz quartz oscillator (for clock count)
12 RESET I RESET Microprocessor reset at "L"
13 Xcout O Xcout System clock output
14 Vss I Vss GND
15 Xin I Xin System clock input
16 VccI I VccI VDD (+3.3V)
17 NMI I NMI (Connected to Vcc1 for NMI at flash write)
18 P84 O N.C
19 INT1 I PSWin Main power monitor
20 INT0 I VSYNC VSYNC signal input
21 P81 O N.C
22 P82 O AC_Ctrl AC adaptor power consumption control
23 P77 O DACICS Gradation control IC chip select
24 P76 I SSW Connected to S terminal at "L"
25 P75 O N.C
26 P74 O N.C
27 P73 I/O SDA2 Serial data line 2 for I2C bus 2 system
28 P72 I/O SCL2 Serial clock line 2 for I2C bus 2 system (EEPROM)
29 P71 I/O SCL1 Serial clock line 1 for I2C bus 2 system (others)
30 SDA1 I/O SCA1 Serial data line 1 for I2C bus 2 system
31 P67 O TxD (TxD at flash write)
32 P66 O RxD (RxD at flash write)
33 P65 O SCLK (Clock input at flash write)
34 P64 O BUSY (Busy output at flash write)
35 TxD0 O MPWEL Data signal input for DVP 4-line serial (MPWEL)
36 RxD0 I MPOE Data output signal for DVP 4-line serial (MPOE)
37 CLK0 O MPWEH Clock for DVP 4-line serial (MPWEH)
38 P60 O N.C
39 P57 O MAIN SW LED power control
40 P56 O N.C
41 P55 I POWin(EPM) DC/DC start detect (connected to Vss for EPM at flash write)
42 P54 I(O) L_ERR Fluorescent lamp error detect
43 P53 O S IN/OUT Audio input/output select
44 P52 O COMP AV selector switch
45 P51 O TIMER(RLED) On timer LED control (power RLED control)
46 P50 I MRDY(CE) I
2
C bus open connection detect (connected to Vcc2 for CE at flash write)
47 P47 O LEDPOW(GLED) Power GLED control
48 P46 O N.C
49 P45 O S_SEL AV selector switch
50 P44 O VSHOUT Panel gate driver voltage control
MAJOR IC INFORMATIONS
1-1. Description of Pins of IC2001 (RH-iXA627WJN5Q)