MITSUBISHI ELECTRIC T-60 - Manual (Page 56)

Changing ROMS in the T-60
Follow these steps to change a program ROM in the T-60:
1. Save the contents of the program memory. Use a PC and the
ApplicationBuilder program to do this.
2. Remove power connections to the unit.
3. Carefully unscrew the top two screws and each of the screws on the side
of the unit.
4. Lay the unit face down on a soft, clean surface.
5. Remove the rear cover by carefully lifting it off the unit.
6. Position the cover to the side of the unit, being careful not to stress the
internal cables.
7. Remove the ROM located at the top of the main board (top being closest
to the display). Note the orientation of PIN 1 on the device (see diagram).
8. Insert the new ROM in location U15. Be sure that PIN 1 (location on
ROM with notch or dot) is facing down (towards the center of the unit).
Check carefully for bent or damaged pins.
Improper orientation of U15 will destroy the ROM and possibly cause
damage to the unit.
9. Re-attach the backlight cable (2 pin cable) to J6 (near U15, see diagram).
10. Replace the cover and screws.
11. Connect an IBM KEYBOARD to the KEYBOARD connector. Make sure
that the keyboard is a type which is compatible with an IBM PC (not AT).
12. Re-connect power to the unit. Press the CTRL, ALT, and DEL keys on the
IBM KEYBOARD simultaneously. This will reset the unit, and normal
operation will begin.
Figure 17
Top of Board Inside the T-60
T-60 Operator's Manual
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