IBM RT PC Problem Determination Manual page 5

CAUTION
Before r em o v ing any cover or disco nnecting any signal
cable, set the power sw itches on the system unit and all
a ttach ed devices to Off; then unplug all external power
cables from the outlets.
This m anual c o n tain s "DANGER" n otices on pages A-12, A-14,
A-16, and A-18. The following pages co n tain tra n slatio n s of this
DANGER notice.
Safety
iii
Safety