IBM 9348 Service Information page 139

Ensure that the read/write head is
clean and insert the CE test tape
ree I.
Run sequence test 99; see
"Running Diagnostic Tests" on
page A-5.
Note: For parameter B, select
SAVE.
Insert the CE test tape and run
sequence test 2; see "Running
Diagnostic Tests" on page
A-5.
Chapter 3. Service Procedures
3-77