Hi
According to your printout, you are not using NIU2, but NIU. The main difference is that NIU 2 use ATA interface that handle the disk/flash card, and the disk to use is HDU7/1.
NIU2 can handle only one flash card and one disk, or one disk, or 2 disks but no more.
NIU use SCSI interface toward HDU7/2. Take care that the /1 or /2 is really important for HDU depending of which NIU is used.
NIU can handle up to 7 HDU7/2.
There fore replacing NIU with NIU2 mean that you replace also the HDU and that you unmount all partitions and node from the system to recreate it with the correct information.
Having a red light on the HDU (there is no light on LSU but on LPU) mean that you have permanent access to the HDU (which is no good)
For the Led on the LPU, here is an extract from Alex
Code:
1.1 Function of the LED's
The upper LED, when lit, indicates that the control system to which the board belongs is in the fault condition and the OK/FAULT flip-flop on the board is in the FAULT state.
The lower LED, when lit, indicates that the control system to which the board belongs is in the standby (passive) mode in a duplicated control system.
On single (non-duplicated) control systems, this LED is not used.
If none of the LEDs are lit, the control system to which the board belongs is in the executing (active) mode in either a single (non duplicated) or a duplicated control system.
So a LPU display will certainly indicate what's the problem is.
You cannot use the port use for SMDR as it is configured for sorting data and not accepting input data. YOu must change its configuration first.
But you can connect to port 1 or 2 as they are configured for MML command.
Schematics for the NIU's port are in Alex