2-11
Getting Started
AHA-2740W/2742W/2744W User’s Guide
Stock Number: 510647-00, Rev. A
Page: 2-11
Print Spec Number: 492897-00
Current Date: 8/3/94
ECN Date: 8/9/94
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Caution:
When reinstalling resistors, you cannot install a 330
ohm resistor into a 150 ohm socket and vice versa. The ohm
value can be found in the part number printed on the resis-
tor. A 330 ohm resistor will have a 330 or 331 included in the
part number printed on the resistor and a 150 ohm resistor
will have 150 or 151.
Note:
When reinstalling resistors, make sure to maintain
pin-1 orientation as shown below.
1
RN1, RN2, RN9, RN10, RN11, and RN12 are 330 ohm resistor networks.
RN3, RN4, RN5, RN6, RN7, and RN8 are 150 ohm resistor networks.
Install
1
Remove
Low
High
None
From RN1 to RN12
OFF
OFF
RN1, RN2, RN9, RN10, RN11, and RN12
with 10-pin 330 ohm bussed RNs.
RN3, RN4, RN5, RN6, RN7, and RN8
with 10-pin 150 ohm isolated RNs.
None
ON
ON
RN9 and RN12 with 330 ohm bussed
RNs.
RN3 and RN6 with 150 ohm isolated
RNs.
RN1, RN2, RN4,
RN5, RN7, RN8,
RN10, and RN11
OFF
ON
* Pin 1 can be identified
by a line or dot
LI0IC331 420
ohm value
LI03C151 242
LI03C151 242
Pin 1
Pin 1
Pin 1*
Pin 1
Figure 2-3. Pin-1 Orientation on Resistor Networks
