Symptom ActionA bouncing or scrolling ballremains on the operator paneldisplay, or the operator paneldisplay is filled with dashes orblocks.If an ASCII terminal IS available, connect it to the systemthrough serial port 1.1. If the service processor menu is displayed:a. Replace the operator panel assembly. Refer to“Operator Panel” on page 277.b. Replace the system board.Location: P1(See note 3 on page 109.)2. If the service processor menu is not displayed, replace thesystem board.Location: P1(See note 3 on page 109.)If an ASCII terminal is NOT available, replace the following,one at a time.1. Operator panel assembly. Refer to “Operator Panel” onpage 277.2. Replace the system board.Location: P1(See note 3 on page 109.)System Stops or Hangs With Alternating Numbers Displayed in the Operator Display PanelThe operator panel displayalternates between the code″E1FD″ and another ″Exxx″code.Record both codes. Go to ″E1FD″ in “Firmware Checkpoints”on page 88.The operator panel displayalternates between the codes″E1DE″ and ″E1AD″.Record both codes. Go to ″E1DE″ in “Firmware Checkpoints”on page 88.Display Problem (Blank, Distortion, Blurring, Etc.).All display problems. v If using a graphics display:1. Go to the Problem Determination Procedures for thedisplay.2. If you do not find a problem, replace the displayadapter, then go to ″MAP 0410: Repair Checkout″ intheRS/6000 EserverpSeries Diagnostic Informationfor Multiple Bus Systems.3. If you do not find a problem, suspect the system board.Go to “MAP 1540: Minimum Configuration” on page 59.v If the problem is with the ASCII terminal:1. Make sure that the ASCII terminal is connected to S1.2. If problems persist, go to the Problem DeterminationProcedures for the terminal.3. If you do not find a problem, suspect the system board.Go to “MAP 1540: Minimum Configuration” on page 59.Power and Cooling Problems34 Service Guide
