Software Download (Function) - Ricoh A193 Service Manual

1.25 SOFTWARE DOWNLOAD (FUNCTION 16)
This procedure copies the software from an external medium (such as an FCU
board or an EPROM board), to the Flash ROM on the machine's FCU (target).
1. Turn off the machine's main and ac switches.
2. If the new software is downloaded from a FCU board, remove the IC card
guiderails ([A] and [B]) in advance.
3. If the new software is downloaded from an EPROM board, mount the
EPROMs in the correct ROM sockets as shown in the above diagram.
The EPROM board uses four 4Mbit EPROMs.
Each EPROM must meet the following specifications:
Size: 4 Mbits Data
Data width: 8 bits
Number of pins: 32
Access speed: Faster than 150 ns.
(A639)
For Writing to 16 Mbit
R O M 0 - H R O M 1 - H
( D 1 5 - D 8 ) ( D 1 5 - D 8 )
[A]
(0H) U1 (1H) U2
[B]
A194M552.wmf
4-13
SERVICE LEVEL FUNCTIONS
Future
Flash ROM Use
R O M 0 - L R O M 1 - L
( D 7 - D 0 ) ( D 7 - D 0 )
(0L) U3 (1L) U4 U5 (L)
ROM BOARD II
For Writing to 4 Mbit
Flash ROM
U6 (H)
A194M556.wmf
SM