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| Symptom/Error | FRU/Action |
|---|---|
| Program-load error during | 1. Network Adapter |
| remote IPL from the file | |
| service. Displayed on upper | |
| or lower half of the LCD. | |
| External display screen | 1. External Display |
| changes colors. | 2. Docking Frame |
| One or more keys do not | 1. External Keyboard |
| work on the external keyboard | 2. Keyboard Cable |
| but the 3550 Expansion Unit | 3. System Board of 3550 Expansion Unit |
| is otherwise functional. | |
| (See | |
| 'Ext. Keyboard/Aux. Input Device Checkout'.) | |
| Power-good light does | 1. System Board of 3550 Expansion Unit |
| not turn on and fan runs. | 2. Power Supply |
| Power-good light does | 1. Power Supply |
| not turn on, fan does not | 2. System Board of 3550 Expansion Unit |
| run, and 3550 Expansion | |
| Unit is not functional. | |
| (See 'Undetermined Problem'.) | |
| Intermittent Failures. | 1. Power Supply |
| (See 'Undetermined Problem'.) | 2. System Board of 3550 Expansion Unit |
| 3. Any Device or Adapter | |
| 3550 Expansion Unit | 1. System Board of 3550 Expansion Unit |
| cannot be powered-off. | 2. Power Supply |
| LED for hard disk drive | 1. SCSI Hard Disk Drive |
| stays on. | 2. System Board of 3550 Expansion Unit |
| LED for hard disk drive | 1. System Board of 3550 Expansion Unit |
| is not working, but the | |
| 3550 Expansion Unit is | |
| completely functional. |
Please see the LEGAL - Trademark notice.
Feel free - send a 
for any BUG on this page found - Thank you.