IBM 4247 Maintenance Information page 51

Figure 2 and Figure 3 on page 52 show you how to use the feature resistors to identify the attachment card
(Models 001, 002). Use the figure that matches your attachment card.
To correctly view the resistors:
Level 1 (Long) Card: Hold the attachment card with the cable toward you.
- or -
Level 2 (Short) Card: Hold the attachment card with the cable to the right.
Attention: Level 2 coax attachment card: Do not bend or crease the metal shield. Gently lift the metal shield from
the back of the card to locate the feature resistors.
Bottom View
of the
Attachment Card
Showing the
Feature Resistors
Feature Resistors
Feature Resistors
as Shown in Table
Figure 2. Models 001 and 002, attachment card Feature Resistors [Level 1 (Long) Card]
Chapter 1. Diagnosing Problems
51