Rom Version-Up Method; General; Cautions; Flash Rom Update Procedures - Sharp AR-M355U Service Manual

[12] ROM VERSION-UP METHOD

1. General

Firmware update is executed by collectively writing the files with
each ROM inserted to its specified slot.
If update by collective writing is failed by power interruption during
the update process, etc., insert a preliminary ROM into the control-
ler PWB and make update for each ROM individually. The update
process flow in such a case is shown in "G. Update process flow."
The files for update can be transferred from a PC in which printer
setting is made (regardless of Centro, USB, or TCP/IP connection
type) to the printer by the use of File2PRN.EXE described later. In
the other cases, use FCOPY.EXE to transfer the files.

2. Cautions

• In this method, verify for each byte is not made in order to
shorten the writing time. The reliability of writing is assured by
comparing the sum value. If the operation should be abnormal,
make updater (C.) by the controller PWB.
• When the power is turned off during writing, the process may be
failed and the machine may not be booted.
In this case, refer to "E. Power OFF during update."
• After completion of update, the update window may be dis-
played by resetting the DIP switch on the controller PWB and
booting the machine normally. In this case, the PCU and the
scanner may not have been updated normally. Refer to "F.
Update window when normal booting."
• It takes a longer time (about 5 minute) to write to the PWB's on
the PCU, the scanner, and the FAX ROM than to write by CN6
of the controller PWB. This is because the difference in the com-
munication speeds of the PWB's, etc. Also when the version of
the software which is updated is the same, the process may be
completed quickly.

3. Flash ROM update procedures

A. Preliminary arrangement

(1) Necessary tools
1) A machine with the operating ROM in it
2) A spare PCU ROM, a controller boot ROM, a scanner ROM
(which operate normally) (Used when writing is failed.)
3) A PC operating on Windows with a USB or a parallel port.
(When File2PRN is used, it must be set as a printer.)
4) USB cable or Centronics cable (Used to connect the PC and
the controller PWB.)
5) File2PRN.EXE (Used to transfer the files to the machine con-
nected with the USB, network, or parallel port. For the network
connection, IP address setting is required. However, it is not
mentioned here.), or FCOPY.EXE (parallel port file transfer
tool). For the operating procedures of them, refer to <Refer-
ence> described later.
6) Compression files for update (SFU files for each of the PCU,
the scanner, the FAX, the controller boot ROM and the MAIN
ROM, or the collective SFU file)
(2) DIP switch setting on the back of the machine
When updating the ROM, the DIP switches on the back of the
machine must be set properly.
a) DIP switches
As shown in the figure below, remove the screw marked with (*)
on the controller PWB at the back of the machine and rotate the
plate part, and the DIP switch will appear.
ON the back of the machine, there are following DIP switches from
the controller PWB:
• Diag mode switch (on the left)
• Write protect switch (on the right)
AR-M351U/M451U, AR-M355U/M455U ROM VERSION-UP METHOD 12 - 1
The switches are set to the upper side (protect) in normal opera-
tion. When they are set to the lower side, the diag mode and write
protect are released. (Refer to the figure below.) When writing
each ROM, set the switches to the lower side. (Default: Upper
side). Return the plate part which covers the DIP switch to the
original position, and tighten the screw again.
Controller PWB
Enlarged view
Plate part
Screw (*)
Enlarged view of DIP switches
Diag Write
mode protect
(3) Controller PWB slot
The Flash Rom slots of the controller PWB are CN4, CN5, and
CN6. Normally the BOOT ROM is inserted to CN4, and the main
ROM is inserted to CN5, and CN6 is empty. When, however, the
controller PWB is used to make a ROM, CN6 is used.
(4) Operation panel
When the machine is booted by the diag mode, each operation is
performed with the hard keys of the scanner. The window display
is made by the LCD panel. The keys used in the diag mode are
assigned as follows:
START key
Print (Document filing) key
FAX/Image send key
Job status key
Clear key
LCD touch panel
DIP switch
With the screw (*) removed
DIP switch
Normal boot
Switch
Diag mode/
Write protect cancel
OK key
Up/Down select key
Up/Down select key
Menu key
BACK key
Up/Down key BACK key
MENU key OK key