28DVD-2500BTCIBLOCK DIAGRAMSSystem Control Block DiagramIC2000IC6905 (EEPROM)IC6001SUBMICRO CONTROLLER(MAIN MICRO CONTROLLER)463 62 61 60SW3100D3101POWERCN3101CN2001 CN3000IC3001FL3000VFD(VFD DRIVER)SDASCLCSRESETCN30013 3POWER-KEY5 15KEY-14 16KEY-26 14REMOTE7 13FL-RESET8 12FL-CS9 11FL-SCL10 10FL-SDAXRSTXTRSTCN2503CN2304CN7001 CN200015 9SUB-TXD14 11SYS-RESET13 12RDY16 6SUB-RXD2 18LED-R1 19LED-G5 5LED-R6 6LED-GCN2551CN25041 1REMOTE5 5R1-OUT4 4T1-INPOWER SW CBAFRONT CBABE MAIN CBA UNIT SUB MICROCONTROLLER CBARS232C CBAAV CBAAV CBARS3000REMOTESENSORKEY SWITCHKEY SWITCH27203433445543M3Q2004BUFFERLED DRIVE1489RESET48 SUB-TXD49L3A16SUB-RXDLED-RSYS-RESETRDYRDYB18TXD1G18A18A17 RXD1SCLSDASCLSDAFL-SDAFL-SCLFL-CSREMOTEKEY-13KEY-2OSC2OSC18MHzX'TALX2000EV+3.3VIC2001RESETD+3.3VD+3.3VQ200054 LED DRIVELED-GQ2001Q6702Q6703Q670110 25RS232C-RXD9 26RS232C-TXD14 21REMOTE19RS232C-RXD18RS232C-TXD15 20PWSW217 18PWSW313 22FL-SW30 5FAN-LOCK29PWSW237PWSW3PWSW2CN2000CN2000CN2503CN2503PWSW326FL-SW FL-SW62FAN-LOCK FAN-LOCKTO POWERSUPPLYBLOCKDIAGRAMQ670456STANDBYPOWER1315161423262924RESETIC67021D+3.3VD+3.3VRESETIC67012 1 3IC2500REMOTE-INREMOTE-OUTRS232CI/F1314CN2550RS232C-CONNECTOR3 RXD2 TXD1112IC2501 (AMP)JK2550AMP 17RS232CINTERFACEEither IC6701 or IC6702 is used for BE MAIN CBA UNIT.