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Part 3: Operating Instructions
3.7 Rewriting Flash ROM
3.7.1 Flash ROM rewrite mode
This mode can only be accessed by a service person. The flash ROM program can be
rewritten using this mode. When upgrading the ROM, a floppy disk containing the
upgraded program will be provided. Follow these instructions in order to reset the
settings in both the host computer and printer.
a) Resetting the Printer
1) Remove the lithium ion battery.
2) While holding down the RESUME button and CARTRIDGE button, insert the DC
plug of the Universal adapter in the printer until one long and short beeper
sounds, then release the buttons.
3) Press the RESUME button until a short beeper sounds, then release the button.
After completion of the initialization process, a short beeper will sound and the
POWER indicator will light.
The printer is now in the flash ROM rewrite mode and ready to receive the rewrite
program.
b) Resetting the Host Computer
1) Start up the computer and go to the MS-DOS prompt.
2) Connect the interface cable in the printer's LPT1 port.
c) Downloading the rewrite program
1) Transfer data from the computer to the printer using the MS-DOS COPY
command.
2) The POWER indicator blinks while the flash ROM is being rewritten.
3) Flash ROM rewrite is completed when two short beepers sound and the POWER
indicator lights.
4) After checking that rewrite is completed, remove the DC plug from the printer.
Make sure to unplug the DC plug before turning on the printer with the POWER
button.
The lithium ion battery should not be used in flash ROM rewrite mode.
Please remove the lithium battery from the printer.
The operating system of the host computer should be MS-DOS. The
average rewrite time is about 40 seconds, however depending on the host
computer's performance and OS transfer speed, it may take more than 40
seconds.
Reference
[Computer: Pentium 133MHz, Microsoft Windows 95 (4.00.950a) ]
eg) COPY 230J0150.DL LPT1
File name in the FD directory
3-26
BJC-50
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