Chapter 3. Problem Determination; Preliminary Checklist; Using The Diagnostic Processor - IBM SurePOS 700 Series Hardware Service Manual

Chapter 3. Problem determination

Problems with the SurePOS 700 Models 723, E23, 743, C43, E43, 783, E83, 784,
C84, and E84 can be caused by software errors or hardware failures. This chapter
contains problem-analysis tables to help determine the cause of a problem and how
to solve it.
When you turn on the SurePOS 700, the system runs a power-on self-test (POST).
The following conditions indicate a successful POST:
v A single beep sounds.
v The power and uninterruptible power supply status indicators are both on and are
If the POST is unsuccessful, see "Problem isolation" on page 63.

Preliminary checklist

If you have a problem with the system, first use this checklist:
1. Ensure that all I/O devices are connected correctly.
2. Ensure that AC power is connected.
3. Ensure that the contrast and the brightness controls on the display are adjusted
4. Ensure that all installed hardware (such as a memory module, feature card,
5. Turn on the system and listen for one or two beeps at the completion of the
6. If POST does not complete, turn off the system and remove any optional
7. If POST still fails to complete, see "Problem isolation" on page 63.

Using the diagnostic processor

The system unit contains a diagnostic processor that assists in the diagnosis of
common hardware field problems. This task is accomplished using diagnostic LEDs
and a System Event Log Viewer.
© Copyright IBM Corp. 2007, 2010, 2012
not blinking.
correctly.
printer, or mouse) and cables are connected correctly and securely.
POST.
adapters and all I/O devices except a single keyboard and display.
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