IBM 6150 Hardware Maintenance Manual page 65

TNL SN20-9843 (03-27-87) to 75X0152 or 75X0166
Step 15
Look at your SRN.
4. Write the Service Request Number here:
~-2~~-\DD
-m
-b~
IS THE LEFTMOST SERVICE REPAIR ACTION NUMBER OF YOUR
SERVICE REQUEST NUMBER "981" THROUGH "987"?
YES Go to "Step 19" on page 3-0010-20.
NO Continue on the next page.
3-0010-16 Service Manual