User's Manual Part 1

Table Of Contents
CHAPTER 4
TROUBLESHOOTING
Typically, troubleshooting begins with an attempt to relate a problem to an associated
component or system function. In this phase, servicing personnel may attempt to duplicate the
problem and then use various means to test for a malfunction or improper system setup.
This chapter hopes to aid in this process by presenting Flow diagrams that lead to some areas
related to an observed problem. Those with replacement components on hand can often speed
up the repair process by swapping related components. This process either narrows the
possibilities or eliminates the problem. Trial-and-error works particularly well with easily
accessible components, such as those accessible by opening the cover or removing the rear
case.
Only a symptom-related list of possibilities appears. When the suggestions presented fail to
effect a repair, CPU and Extension Board replacements, if not prescribed, should nevertheless
be tried. Also, check for broken or disconnected cables and any loss of either ac or dc power.
Beyond this, 3M Products offers Technical Support and factory repair as options.
980286-001 Rev. A 4-1