IBM H Series Installation And Service Manual page 69

Step 1520-23
Remove the processor card(s), memory card(s), and Service Processor (Model H50)
from the system. Disconnect the FMC from the I/O board. Apply AC power to the
system.
Is anything displayed on the operator panel?
NO Go to "Step 1520-26" on page 2-36.
YES Model Model H50 go to "Step 1520-24."
Model Model H70 go to "Step 1520-25" on page 2-36.
Step 1520-24
Install the Service Processor on the I/O board.
Does the operator panel display "OK"?
NO The service processor is defective. Replace it and go to "MAP 410:
Repair Checkout" in Diagnostic Information for Multiple Bus Systems.
YES Go to "Step 1520-25" on page 2-36.
Chapter 2. Maintenance Analysis Procedures
2-35