View source for Adding and removing the expansion unit from models 270 and 800

AS/400e 9406-270 and -800 series machines are getting cheaper with every passing year. Sometimes, these are equipped with an additional expansion unit #7116 to fit more disks into the case. Unfortunately, this unit is '''very''' noisy and most of the time, the disks aren't really needed for space reasons. At last, unneeded disks and power supply draw power from mains one has to pay for.

It is not sufficient to just unplug any connectors betweeen the to case halves. The machine has a configuration setting somewhere in the behinds of the control panel to "know" if there's an expansion unit available or not.

To change this setting, a few requirements must be met.

== Change IPL-Mode to Manual ==
To access the SPCN-Configuration via Panel, the machine '''must''' be set to ''Manual'' IPL mode.

* Power down the machine if not already done. If you applied power to the machine, wait a minute after the service processor signals it's finished IPLing.
* Set the IPL-Mode to ''Manual''. You need to access the part of the machine with the LCD and knobs.
** Press ↑ or ↓ to switch the display to <code>02</code>,
** Press <code→⬦</code> (Enter) to enter the IPL change mode,
** Press <code→⬦</code> (Enter) again to change the mode from IPL source to IPL method,
** Press ↑ or ↓ (probably more than once) to switch the display to <code>02  B M</code>.
** Press <code→⬦</code> (Enter) to enter the IPL speed mode,
** Press <code→⬦</code> (Enter) to go back to IP change mode,
** Press ↑ or ↓ to switch the display to <code>01</code>,
** Press <code→⬦</code> (Enter) to display the current IPL mode.
* Do '''not''' power on the machine.

== Change expansion unit configuration ==
There are four settings to configure with the control panel to tell the machine to search for or ignore the expansion unit. It is ''not'' appearing as a separate device on the SPCN<ref>System Power Control Network.</ref>

* Press ↑ or ↓ repeatedly to switch the display to <code>07</code>.
** If <code>07</code> is not available, wait a minute after applying power to the machine.
** If <code>07</code> is still not available, check if you set the IPL mode to ''Manual''.
* Press <code→⬦</code> (Enter) to enter the SPCN configuration mode. The Display should read <code>07**</code>.
* Press ↑ or ↓ repeatedly to switch the display to <code>07A9</code>.
* Press <code→⬦</code> (Enter). The display should read <code>07A9 00</code>.
* Press ↑ or ↓ (repeatedly) to chose the frame address. This is usually 01, so the display should read <code>0701</code>.
* Press <code→⬦</code> (Enter). The display should read <code>0701 00</code>.
* Press ↑ or ↓ or (repeatedly) to chose the correct configuration ID; see table below. The display should read <code>07nn</code>, where ''nn'' is the code chosen from the table below.
* Press <code→⬦</code> (Enter). The display should read <code>0701</code> briefly until the service processor re-IPLs.

{|class="wikitable"
!ID
!Description
|-
|valign="top"|91
|Model 270 with CCIN 2249, 224A, 25B9, 25BA and '''without FC 7104''', (without removable processor).<br />Models 800 and 810 with CCIN 25B9, 25BA, 25F0 and '''without expansion unit''' (FC7116), (without removable processor).
|-
|valign="top"|92
|Model 270 with processor CCIN 24A0, 24A2, 25BD and '''without FC 7104''', (with removable processor).<br />Model 810 with processor CCIN 25EB and '''without expansion unit''' (FC 7116), (with removable processor).
|-
|valign="top"|95
|Model 270 with CCIN 2249, 224A, 25B9, 25BA and '''with FC 7104''', (without removable processor).<br />Models 800 and 810 with CCIN 25B9, 25BA, 25F0 and '''with expansion unit''' (FC 7116), (without removable processor).
|-
|valign="top"|96
|Model 270 with processor CCIN 24A0, 24A2, 24A4, 25BD and '''with FC 7104''', (with removable processor).<br />Model 810 with processor CCIN 25EB and '''with expansion unit''' (FC 7116), (with removable processor).
|}

For the 800, it's easy to decide, since there are only two options for that particular machine. For 270 and 810, you need to consult the DSPHDWRSC command to check the precise CPU model.

== Weblinks ==
* [ftp://ftp.www.ibm.com/systems/power/docs/systemi/v5r2/sl_SL/y4459171.pdf iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware (Remove and Replace; Part Locations and Listings)], PDF, Document-ID SY44-5917-02.

== Footnotes ==
<references />

[[Category: Hardware Configuration Guide‏]]