IBM RS6000 - 7026 - H70 Service Manual

Also see for RS/6000 7025 F50 Series: User guide Service guide Service guide

Table 3-1 (Page 21 of 24). Firmware Error Codes.Error Code Description Action / Possible Failing FRU40D00003 An unknown slow shutdowncommanded.Critical cooling problem. Check toensure the the temperature is in theambient range40D00004 An unknown fast shutdowncommanded.Locked fan failure detected. Make sureall fans are operating normally.4B200054 The CPU cards are not compatible witheach other (i.e. one is a 166MHz andthe other is a 332MHz)1. Remove cards2. Verify part numbers3. Install valid cards4B200055 No CPU card in first slot. 1. If only one processor card is used,it must be in slot #1.2. If two processor cards are beingused, replace the card in slot #1.4B201000 Checkstop 1. Attempt to reboot the system inService Mode, this preserves theAIX error log. If the reboot fails,attempt to reboot from theCD-ROM. If the reboot issuccessful, run Diagnostics inProblem Determination mode todetermine the cause of the failure.Otherwise continue.2. CPU Card.3. System Board.4. PCI Adapter.5. I/O board. (See notes on 3-1.)4B2xxx10 Machine Check 1. Attempt to reboot the system inService Mode, this preserves theAIX error log. If the reboot fails,attempt to reboot from theCD-ROM. If the reboot issuccessful, run Diagnostics inProblem Determination mode todetermine the cause of the failure.Otherwise continue.2. Refer to map 1540 in the systemunit's Service Guide.4B201020 TEA Error Refer to map 1540 in the system unit'sService Guide.3-22 Service Guide