Sharp LC-20B6US Operation, Service Manual

Page: 35 / 104

LC-20B6U-S
35
Pin No. Pin Name I/O Pin Name Function
51 P43/A19 O P_MUTE RESET FOR LIQUID CRYSTAL CONTROLLER (20 INCH ONLY)
52 P42/A18 O HPMUTE HEADPHONE MUTE
53 P41/A17 O SP MUTE1 MAIN SPEAKER MUTE
54 P40/A16 O N.C
55 P37/A15 I HP DET HEADPHONE DETECTION
56 P36/A14 O SSTBY AMP POWER SUPPLY CONTROL (MODEL WITHOUT 1 BIT)
57 P35/A13 I VSH IN PANEL GATE DRIVER VOLTAGE CHECK
58 P34/A12 O LMUTE LINEOUT AUDIO MUTE
59 P33/A11 O V IN/OUT VIDEO I/O SWITCHING
60 P32/A10 O SRESET AUDIO-RELATED IC RESET OUTPUT
61 P31/A9 O BS_POW N.C
62 HSYNC I HSYNC HORIZONTAL SYNCHRONIZING SIGNAL FOR OSD
63 P30/A8 O LCDPOW_EN LCD POWER SIGNAL CONTROL
64 VSYNC I VSYNC VERTICAL SYNCHRONIZING SIGNAL FOR OSD
65 P27/A7 O PROMRESET RESET FOR FPGA DOWNLOAD (20 INCH ONLY)
66 P26/A6 O UP0 N.C
67 P25/A5 O EXT N.C
68 P24/A4 O I
2
/UA N.C
69 P23/A3 O OPCLED LED FOR OPC
70 P22/A2 O INV_POW SEPARATELY-EXCITED INVERTER POWER SUPPLY CONTROL (20 INCH ONLY)
71 P21/A1 O VGH PANEL POWER SUPPLY CONTROL
72 P20/A0 O POWout DC/DC CONTROL OUTPUT
73 P17/D15 I ADPPOW ADAPTER ON/OFF INPUT
74 P01/D1 O DACOUTCON GRAY SCALE CONTROL IC FOR OUTPUT CONTROL (13 AND 15 INCH ONLY)
75 P15/D13 O MP_RCS TEMPERATURE SENSOR CHIP SELECT
76 P14/D12 I MP_RDA TEMPERATURE SENSOR DATA INPUT
77 P13/D11 O MP_CS CHIP SELECT FOR QS-READY CONTROLLER
78 P12/D10 O MP_DA QS-READY CONTROLLER OR GRAY SCALE CONTROL IC DATA OUTPUT
79 P11/D9 O MP_CLK QS-READY CONTROLLER, TEMPERATURE SENSOR OR
GRAY SCALE CONTROL IC CLOCK OUTPUT
80 P10/D8 O DDC_RESET VIDEO-RELATED IC RESET OUTPUT
81 P07/D7 I KEY4 KEY INPUT 4
82 P06/D6 I KEY5 KEY INPUT 5
83 P05/D5 O VLS PANEL & GRAY SCALE IC POWER SUPPLY CONTROL (20 INCH ONLY)
84 P04/D4 O BSERR N.C
85 P03/D3 O GRRESET N.C
86 P02/D2 O 1BIT_PROTECT N.C
87 P01/D1 I CON_CE FPGA DOWNLOAD COMPLETION DETECTION (20 INCH ONLY)
88 P00/D0 I INCH INCH DISCRIMINATION PORT (“H”: 20-INCH XGA MODEL)
89 P107/AN5/DIGR2 I AFT AFT VOLTAGE INPUT
90 P106/AN4/DIGG2 I AGC AGC INPUT VOLTAGE
91 P105/AN3/DIGB2 I KEY1 KEY INPUT 1
92 P104/AN2 I KEY2 KEY INPUT 2
93 P103/AN1 O C/N N.C
94 P102/AN0 I OPC_IN OPC SENSOR LEVEL INPUT
95 VHOLD2 I V HOLD2 FOR CLOSED CAPTION
96 HLF2 I/O HLF2 FOR CLOSED CAPTION
97 CVIN2 I CVin2 FOR CLOSED CAPTION
98 TVSETB I TVSETB TEST INPUT PIN (L-FIXED)
99 VCCE I VccE POWER SUPPLY (5V)
100 CVIN1 I CVin1 FOR CLOSED CAPTION