IBM 6C1, Service Manual

Page: 56 / 377

Symptom Action
A bouncing or scrolling ball
remains on the operator panel
display, or the operator panel
display is filled with dashes or
blocks. If an ASCII terminal IS available, connect it to the system
through serial port 1.
1. If the service processor menu is displayed:
a. Replace the operator panel assembly. Refer to
“Operator Panel” on page 287.
b. Replace the system board.
Location: P1
(See note 3 on page 115.)
2. If the service processor menu is not displayed, replace the
system board.
Location: P1
(See note 3 on page 115.)
If an ASCII terminal is NOT available, replace the following,
one at a time.
1. Operator panel assembly. Refer to “Operator Panel” on
page 287.
2. Replace the system board.
Location: P1
(See note 3 on page 115.)
System Stops or Hangs With Alternating Numbers Displayed in the Operator Display Panel
The operator panel display
alternates between the code
″
E1FD
″
and another
″
Exxx
″
code.
Record both codes. Go to
″
E1FD
″
in “Firmware Checkpoints”
on page 92.
The operator panel display
alternates between the codes
″
E1DE
″
and
″
E1AD
″
.
Record both codes. Go to
″
E1DE
″
in “Firmware Checkpoints”
on page 92.
Display Problem (Blank, Distortion, Blurring, Etc.).
All display problems.
v
If using a graphics display:
1. Go to the Problem Determination Procedures for the
display.
2. If you do not find a problem, replace the display
adapter, then go to
″
MAP 0410: Repair Checkout
″
in
the
RS/6000
Eserver
pSeries Diagnostic Information
for Multiple Bus Systems .
3. If you do not find a problem, suspect the system board.
Go to “MAP 1540: Minimum Configuration” on page 63.
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 Determination
Procedures for the terminal.
3. If you do not find a problem, suspect the system board.
Go to “MAP 1540: Minimum Configuration” on page 63.
Power and Cooling Problems
38
Service Guide