Data Flow Chart - Sharp AM-900 Service Manual

[7] Data flow chart

1. COPY
CIS
2. FAX/SEND
CIS
3. FAX RECEIVE
PSTN
TEL LINE
4. PC PRINT
PC
5. PC SCAN
Control PWB
4
OA-2000
1 LSU I/F controlled
(IC1)
by Printer CPU
2
3
SDRAM
(IC4)
Control PWB
OA-2000 4
1 FAX MODEM
(IC1)
(IC18)
2
3
SDRAM
(IC4)
Control PWB
FAX
2
1
LIU PWB
MODEM
(IC18)
3
Control PWB
4
1
OA-2000
USB (IC1)
2
3
SDRAM
(IC4)
Control PWB
1
OA-2000
CIS
(IC1)
2
SDRAM
(IC4)
5 Laser Scan
Unit
5
LIU PWB
6 LSU I/F
OA-2000
(IC1) controlled by
Printer CPU
4
SDRAM
(IC4)
LSU I/F
5
Laser Scan
controlled by
Unit
Printer CPU
4
PC
USB
3
5 – 24
Printing
PSTN
TEL LINE
Laser Scan
Printing
Unit
Printing
AM-900U