IBM RT PC 10 Hardware Maintenance And Service page 76

Step 10
Look at the two-digit display.
,,\ I / /
: 1 1
II
II~
/
/
\ "
IS THE TWO-DIGIT DISPLAY FLASHING?
YES
Go to "Step 36" on page 3-59.
NO
Continue on the next page.
Problem Isolation Charts 3-31