IBM R30 Operator's Manual page 173

Is the second line of the operator panel display blank?
NO The message has a type 103 or 105 message included in it. Press the Reset button
once, then go to Step 3. Read out the SRN and FRU information for these
message types.
YES This completes the readout of this message. You must power-off the system unit to
recover from this halt. There are no SRNs associated with this message type.
Go to "Hardware Problem Determination" on page 11-1.
Crash Codes
The following crash codes are part of a Type 102 message.
000
200
201
202
203
204
205
206
207
208
300
32x
38x
400
500
501
51x
52x
53x
54x
558
700
800
Dump Progress Indicators (Dump Status Codes)
The following dump progress indicators, or dump status codes, are part of a Type 102
message.
Note: When a lowercase c is listed, it displays in the lower half of the seven-segment
character position. The leftmost position is blank on the following codes.
0c0
0c2
0c3
0c4
0c5
0c6
0c7
0c8
0c9
Unexpected system interrupt.
Machine check because of a memory bus error.
Machine check because of a memory timeout.
Machine check because of a memory card failure.
Machine check because of a out of range address.
Machine check because of an attempt to write to ROS.
Machine check because of an uncorrectable address parity.
Machine check because of an uncorrectable ECC error.
Machine check because of an unidentified error.
Machine check due to an L2 uncorrectable ECC.
Data storage interrupt from the processor.
Data storage interrupt because of an I/O exception from IOCC.
Data storage interrupt because of an I/O exception from SLA.
Instruction storage interrupt.
External interrupt because of a scrub memory bus error.
External interrupt because of an unidentified error.
External interrupt because of a DMA memory bus error.
External interrupt because of an IOCC channel check.
External interrupt from an IOCC bus timeout;x represents the IOCC number.
External interrupt because of an IOCC keyboard check.
There is not enough memory to continue the IPL.
Program interrupt.
Floating point is not available.
The dump completed successfully.
A dump, requested by the user, is started.
The dump is inhibited.
The dump did not complete. A partial dump may be present.
The dump program could not access the dump device.
A dump to the secondary dump device was requested. Make the secondary
dump device ready; then press Ctrl-Alt-Numpad2.
Reserved.
The dump function is disabled.
A dump is in progress.
8-13
Using the Diagnostics