IBM 8681 Hardware Maintenance Manual - Page 12
AC LED on/DC LED off
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UPC - 087944642503
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Page 12 highlights
System reliability considerations 162 Understanding the Netfinity 8500R server design 163 I/O board 163 I/O function card 163 Midplane 164 Processor controller board 164 Processor daughterboard 164 Memory board 164 Working inside a server with power on . . . . 165 Symptom-to-FRU index 166 Beep symptoms 167 No beep symptoms 172 Power supply LED errors 173 AC LED on/DC LED off 174 Power control card LED 176 Server component fault indicators 182 Diagnostic error codes 183 Other error symptoms 190 POST error codes 194 DASD LEDs for hardfiles running in a RAID environment 206 SCSI errors 206 SM BUS error (3-3-2 208 Undetermined problems 211 System management codes 222 System Management Interrupt (SMI) Handler . 227 Parts listing (Netfinity 8500R - Type 8681) . . . . 229 System 230 Processor Housing Assembly 232 I/O Housing Assembly 234 Keyboards (101/102 Key 236 Power cords 238 4 Netfinity Server HMM
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