IBM RS/6000 44P 270 Service Manual page 101

Table 2. Firmware Checkpoints. (continued)
Checkpoint Description
E1DC Dynamic console selection.
E1DD Early processor exception
E1DE Alternating pattern of E1DE and E1AD
is used to indicate a default catch
condition before the firmware
"checkpoint" word is available.
E1DF Create diskette drive (disk) node
E1E0 Program flash
E1E1 Flash update complete
E1E2 Initialize System I/O
E1E3 PReP boot image initialization.
Action/ Possible Failing FRU
If a console is attached but nothing is
displayed on it, follow the steps
associated with "All display problems" in
the Entry MAP tables.
If selection screen(s) can be seen on
the terminals and the appropriate key
on the input device associated with the
desired display or terminal is pressed
within 60 seconds, but there is no
response to the keystroke:
1. If selecting the console with a
keyboard attached to the system,
replace the keyboard. If replacing
the keyboard does not fix the
problem, replace the I/O board. (See
notes on page 93.)
2. If selecting the console with an
ASCII terminal, suspect the ASCII
terminal. Use the problem
determination procedures for the
terminal. Replace the I/O board if
these procedures do not reveal a
problem. Note: Terminal settings
should be set to:
v 9600 Baud
v No Parity
v 8 Data bits
v 1 Stop bit
1. I/O board (See notes on page 93.)
2. Go to "MAP 1540: Minimum
Configuration" on page 50.
1. I/O board (See note on page 93.)
2. Go to "MAP 1540: Minimum
Configuration" on page 50.
Go to "MAP 1540: Minimum
Configuration" on page 50.
Go to "MAP 1540: Minimum
Configuration" on page 50.
Go to "MAP 1540: Minimum
Configuration" on page 50.
Go to "MAP 1540: Minimum
Configuration" on page 50.
Go to "MAP 1540: Minimum
Configuration" on page 50.
Chapter 4. Checkpoints
83