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212
TROUBLESHOOTING AIDS
MiniMAPs provide you with three levels of information.
These levels are:
1. A figure showing the circuit line names and pin
numbers.
2. A description of the circuit and how it can be
tested.
3. A detailed guide that uses the yes and no path
of questions that you can follow to isolate
the failures.
This procedure is used to give you as much information
as possible about the failing curcuit.
It is possible the symptoms could change or disappear
during probing on an intermittent problem.
All the diagrams use the same format.
Conditions After Power-On
Describes the normal condition of the circuit after
Power-On.
Service Aids
Lists suggestions as to how the circuit may be tested
and additional information about the circuit.
Tools
Suggests which tool to use.
SOURCE
(Driver)
SINK (Receiver)
(pull up resistor)
+5
::~~:~e
f
(extl:~::
+/-
Line Name
Pin Number
Cable
Pin
--[>---- --
--~
-----:»----»- ----
Driver
Cable
Interposer
1-86
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