| Checkpoint | Description | Repair Action | 
| (hex) | 
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| E122 | No memory | 1. Replace memory dimm(s) | 
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 | detected (system | 2. Replace System Planar | 
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 | lockup) Note: | 3. Replace System Planar | 
| 
 | Harddisk light is on | See “Unresolved problems” on page  | 
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 | continuously | |
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| E123 | No SIMM found in | See “Unresolved problems” on page  | 
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 | the socket | 
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| E124 | Disable defective | See “Unresolved problems” on page  | 
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 | memory bank | 
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| E125 | Clear PCI devices | See “Unresolved problems” on page  | 
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 | command reg, go | 
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 | forth | 
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| E126 | Check valid image - | See “Unresolved problems” on page  | 
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 | start | 
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| E127 | Check valid image - | See “Unresolved problems” on page  | 
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 | successful | 
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| E128 | Disable interrupts, | See “Unresolved problems” on page  | 
| 
 | set int vectors for | 
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| 
 | O.F. | 
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| E129 | Validate target RAM | See “Unresolved problems” on page  | 
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 | address | 
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| E12A | Copy ROM to RAM, | See “Unresolved problems” on page  | 
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 | flush cache | 
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| E12B | Set MP operational | See “Unresolved problems” on page  | 
| 
 | parameters (eg. | 
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| 
 | L.E.?, Real?) | 
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| E12C | Set MP CPU node | See “Unresolved problems” on page  | 
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 | characteristics | 
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| E12D | Park secondary | See “Unresolved problems” on page  | 
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 | processors in | 
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| 
 | parking lot | 
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| E12E | Primary processor | See “Unresolved problems” on page  | 
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 | sync | 
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| E12F | Unexpected return | See “Unresolved problems” on page  | 
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 | from Open Firmware | 
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 | (system lockup) | 
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| E130 | Build device tree | See “Unresolved problems” on page  | 
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| E131 | Create ROOT node | See “Unresolved problems” on page  | 
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| E132 | Create CPUs node | See “Unresolved problems” on page  | 
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