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Download Direct View/Projection Television Troubleshooting
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7. DA-4 & DA-4X Data Communication Bus Networks Chapter 7 - DA-4 & DA-4X Data Communication Bus Networks There are three data communications networks used in the DA-4 and DA-4X chassis’s. All three consist of data and clock lines, which communicate with multiple ICs. Refer to Table 7-1. Table 7-1 - Data Communications Bus Networks Network Location Purpose SDAT, SCLK IC2300/pins Micro 31,28 Main Overall System Control BDAT, BCLK IC2300/pins Micro 30,29 Main NVM1 (IC2302) Control DO, CO IC3090/pins Micro 95,97 MID MID Processing Control DA-4 and DA-4X Data Communications Diagram IC2300 MAIN MICRO BDAT BCLK M BOARD IC2302 NVM U BOARD CN2006 CN1502 DATA B12 B12 DATA A13 A13 IC2004 YCT MAIN IC2006 COMP. I/F IC2005 YCT SUB IC2304 SUB CCD & V CHIP IC2303 MAIN CCD & V CHIP CN2302 20 18 20 18 IC2200 3D COMB 12 14 12 14 CN525 IC2504 AUDIO PROC. IC1502 A/V SWITCH CN2302 CN525 CN507 11 4 CN513 2 4 CN3203 IC3400 MID IC3090 MID MICRO IC3003 A/D DNR IC8601 A/D IC2801 CRT DRIVE CLK 2 A BOARD 10 TEST CONNECTOR B23 B22 IC3089 NVM B23 B22 B BOARD MIS BOARD IC3303 DRC DATA DATA TU502 CLK TU501 IC903 DY-CONN CN3601 CN104 IC121 IC SOCKET FIGURE 7-1 - DA-4 & DA-4X DATA COMMUNIATIONS DIAGRAM 56 C31P15-7-1 10/7/02
