v If the load-source is disk, slip-install Licensed Internal Code back to the last known working level. If thisdoes not work, exchange the disk device unit.For location information, refer to the following:– Locations — Model 270– Locations — Models 800 and 810– Locations — Model 820– Locations — Model 825– Locations — Model 830/SB2 System Unit with FC 9074 Base I/O Tower– Locations — Model 840/SB3 System Unit with Processor Tower and FC 9079 Base I/O Tower– Locations — Models 870 and 890 with an FC 9094 Base I/O TowerMABRCFGFor use by authorized service providers.MABRCFG: multi-adapter bridge configuration error.The multi-adapter bridge hardware detected a configuration problem.1. If you are working from the Service Action Log and there is a card position that is listed with this failingitem, then that is where the error is located. Continue with the next step in this procedure. Otherwise,to determine the card location where the multi-adapter bridge configuration error is, go to “Bus PIPPCIBUS-PIP1” on page 99. Return here after locating the card.2. Use the following table to determine the corrective action.Table 1. Multi-adapter bridge errors and meaning or corrective actionProblem or message(these appear in upper case in the console)Meaning or corrective actionMulti-adapter bridge has no IOP for the I/O adapters v Step a. System code detected one or more I/Oadapters under the multi-adapter bridge specified in theDSA, but no I/O processor to control them. The I/Oadapters are not available to the system. The SALentry lists the card locations controlled by themulti-adapter bridge. If you do not have the cardlocations listed in the SAL, find them by performing therest of step A. Otherwise, go to Step b (See page361).To locate the I/O adapters, search for the cardlocations controlled by the multi-adapter bridge. Themulti-adapter bridge is in the DSA in word 7 of theSRC. See “Breaking down the SRC” on page 63 (inthe Bus PIP overview) to determine the multi-adapterbridge number. See the “Card positions” on page 65 (inthe Bus PIP overview) to determine all the cardlocations controlled by the multi-adapter bridge.v Step b. To make the I/O adapters available to thesystem, install an I/O processor in a card slot controledby the multi-adapter bridge to control the I/O adaptersor move the I/O adapters to a multi-adapter bridge withan I/O processor. When adding an IOP, place it in acard position that is ahead of the IOAs according to the″IOA Assignment Rules″ table (located in the Locationspage for the frame type on which you are working).Analyze hardware problems 361
