6.6. DOS functions on the instrument
To run the computer part of the instrument like a normal PC, the Service Personnel should
have a floppy drive with cables (see chapter 9.5), and an MS-DOS 6.22 operating system
boot floppy disk.
Take off upper cover of instrument
Connect an external keyboard
Connect the floppy drive to PPB board Floppy/CD power connector, COMB board
FLOPPY connector.
Put the MS-DOS boot floppy into the floppy disk drive
After turning on, go to the BIOS setup (press F2 repeatedly on the keyboard and switch
to MDA mode by pressing "i." ).
Change the Boot Device Priority in the BOOT menu: The Removable Devices must
be the first in the list. Select Removable Devices
keyboard.
Save the actual settings to CMOS, the instrument will restart (Exit Saving Changes)
The instrument will boot from the floppy and the software will be terminated
Switch to MDA mode by pressing "i."
Do not forget to restart the instrument and set back Boot Priority list after servicing,
(Hard Drive first)
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