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Step 1
Be sure that the external power cable to the system unit has continuity, is plugged into both the system unit and the power outlet, and that the power outlet has been wired correctly with the correct voltage
Did you find a problem?
NO | Go to Step 2. |
YES | Correct the problem. Go to ªMap 0410: Repair Checkoutº in theDiagnostic |
| Information For Micro Channel Bus Systems. |
Step 2
(from Step 1)
1.Set the power switch on the system unit to Off.
2.Follow the procedure in ªTop Cover Removalº on page
Attention: P2 and P25 must be connected and disconnected at the same time.
3.Disconnect the P2 and P25 power supply connectors from the system planar.
4.Disconnect the power connectors P3 and P4 from the disk drives or from the system planar.
5.Connect the power cable.
6.Set the power switch on the system unit to On. Wait 10 seconds before answering the following question.
Did the
NO | Go to Step 3. |
YES | Go to Step 5. |
Step 3
(from Step 2)
Did the power-on light come on and go off?
NO | Exchange the power supply. Refer to the ªPower Supplyº removal |
| procedure on page |
| Diagnostic Information For Micro Channel Bus Systems. |
YES | Go to Step 4. |