IBM RS6000 Service Guide - Page 96

Table 3-1 (Page 23 of 24). Firmware Error Codes. Error Code Description 4B2xxx43 Service Processor reports JTAG fail 4BA00000 4BA00001 4BA80013 The system support controller detects the service processor, but cannot establish communication. The system halts. The system support controller cannot detect the service processor. NVRAM 4BA10001 SSC sram fail 4BA10002 SSC sram fail 4BA10003 4BA10004 Service Processor Fail. Service Processor Firmware Fail. Action / Possible Failing FRU 1. Service Processor is the least likely failure, but it is the tester in this case. Replace the Service Processor to assure true failure indication. If the failure disappears, the Service Processor was bad. Otherwise, reinstall the old Service Processor. 2. Remove the CPU(s) and the System Board. If the failure returns, replace the I/O planar. (See notes on 3-1.) Otherwise, continue. 3. Install the System Board WITHOUT the CPU(s). If the failure returns, replace the System Board. Otherwise, continue. 4. Install the CPU Card in slot 1. If the failure returns, replace that CPU Card. Otherwise, continue. 5. Install the CPU Card in slot 2 (if there was one). If the failure returns, replace that CPU Card. Otherwise, continue. 6. If the failure is still absent, the problem was a bad connection, and you have reseated the possible connections. 1. Replace the service processor. 2. Replace the I/O board. Replace the service processor. Refer to map 1540 in the system unit's Service Guide. Refer to map 1540 in the system unit's Service Guide. Refer to map 1540 in the system unit's Service Guide. Replace Service Processor. Restore or update the Service Processor Flash EPROM. 3-24 Service Guide