2 ] Dram Group - Brother FAX100 Service Manual

[ 2 ] DRAM group
1 DRAMs
FAX725M:
FAX590DT/590MC/825MC/875MC: Two 512-kilobyte DRAMs
2 Calendar clock backup circuit (for the FAX725M)
3 DRAM backup circuit and nickel-hydrogen battery connector (for the FAX590DT/
590MC/825MC/875MC)
4 DRAM refresh circuit (for the FAX590DT/590MC/825MC/875MC)
5 Reset IC
Main PCB Circuit Diagram 2/5
III – 17
Two 256-kilobyte DRAMs