Step 18

(from Step 17)

1.Set the power switch on the system unit to Off.

2.Connect one of the cables that was removed to the adapter.

3.Set the power switch on the system unit to On. Wait 10 seconds before answering the following question.

Did the power-on light come on and stay on?

NO

If the cable is removable from the attached device, go to Step 19.

 

If the cable cannot be removed from the attached device, exchange or

 

repair the device. Go to ªMap 0410: Repair Checkoutº in theDiagnostic

 

Information For Micro Channel Bus Systems.

YES

Repeat this step until the defective cable is identified or all the cables are

 

connected. Go to ªMap 0410: Repair Checkoutº in theDiagnostic

 

Information For Micro Channel Bus Systems.

Step 19

(from Step 18)

1.Set the power switch on the system unit to Off.

2.Disconnect the cable from the attached device.

3.Set the power switch on the system unit to On. Wait 10 seconds before answering the following question.

Did the power-on light come on and stay on?

NO

Exchange the cable. Go to ªMap 0410: Repair Checkoutº in theDiagnostic

 

Information For Micro Channel Bus Systems.

YES

Exchange or repair the device. Go to ªMap 0410: Repair Checkoutº in the

 

Diagnostic Information For Micro Channel Bus Systems.

Step 20

(from Step 13)

1.Set the power switch on the system unit to Off.

2.Disconnect the key mode/reset switch connector P22 from the system planar.

3.Set the power switch on the system unit to On. Wait 10 seconds before answering the following question.

Did the power-on light come on and stay on?

NO

Go to Step 21.

YES

Exchange the key mode/reset switch. Go to ªMap 0410: Repair Checkoutº

 

in the Diagnostic Information For Micro Channel Bus Systems.

2-1520-10Installation and Service Guide

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IBM 7012 manual 1520-10Installation and Service Guide