Also ich würde die Kiste nochmals runterfahren und Normal hochfahren.

Ansonsten kannst Du das ja mal probieren.

RESOLUTION: Systems may be shipped with console bit set HMC type instead of correct console type:
1) Control panel in manual mode
2) FC25 enter
3) FC26 enter
NOTE: The following steps must be done within a few seconds
or a time-out occurs.
SRCA6xx500D = time-out setting console bit, start over.
4) FC65 enter
5) FC21 enter
6) FC11 expected return with current console type:
A604 500A = HMC console


A603 500A = LAN console
A602 500A = Direct cable console
A601 500A = Twinax console
7) FC65 enter
8) FC21 enter
9) FC11 expected return: A6C3500B
10) FC65 enter
11) FC21 enter
12) FC11 expected return: A6A3500B
13) FC65 enter
14) FC21 enter
15) FC11 expected return: A6DD500B
16) FC65 enter
17) FC21 enter
18) FC11 expected return: A601500B
Note: if customer is not using Twinax, go to step 21
if using Twinax, go to step 19
19) FC21 = Sets console bit as Twinax
20) FC21 = forces DST to Twinax Console
21) FC65 enter
22) FC21 enter
23) FC11 expected return: A602500B
Note: if customer not using direct cable, go to step 26
if customer is using direct cable, go to step 24
24) FC21 = Sets the console bit as direct cable
25) FC21 = forces DST to Direct cable OPS Console
26) FC65 enter
27) FC21 enter
28) FC11 expected return: A603500B
29) FC21 = Sets console bit as LAN Console
30) FC21 = forces DST to LAN Console