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Chapter 4. Customer Problem Analysis and Resolution
This chapter contains two parts. Part 1 contains procedures to help you
resolve problems indicated by the 7426 display lamps. You can select a
specific procedure for your specific problem. Part 2 is an External Port Test
and can only be reached as directed by Part 1.
Part 1 Initial Problem Determination Procedures
You may be directed to other chapters and then return. lf this happens, you
may find it helpful to use a paper clip to clip the page you are leaving, so
that you can easily return to the procedure from where you started.
D
In the following chart, find the display that matches your present 7426
display; then go to the procedure indicated.
Power
Test
Unit
Line
Lamp
Mode
Ready
Ready
0
0
0
0
•
0
0
0
•
0
B
0
•
0
•
0
•
0
•
0
•
0
•
0
•
0
•
0
•
0
0
0
•
0
•
0
•
0
• •
•
0
• •
•
0
0
0
•
0
3
B
Co mm
Machine
Check
Check
0
0
0
0
0
0
0
0
•
0
•
0
•
•
B
B
0
•
0
•
0
0
0
•
0
0
Legend
•=ON
O=OFF
B
=
Blinking
Description
Power Lamp out
7426 Models 1 & 2
7426 Models 1 & 2
7426 Models 1 & 2
7426 Model 1
7426 Model 2
7426 Model 1
7426 Model 1
7426 Models 1 & 2
7426 Models 1 & 2
One or more failing
ports 7426 Models
1 & 2
7426 Models 1 & 2
7426 Models 1 & 2
Go to Procedure
1
2
3
4
5
6
7
7
8
8
9
10
11
Chapter 4. Customer Problem Analysis and Resolution 4-1
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