Installation Note N5247-90116 27
Description of the Upgrade
Installation Procedure for the Upgrade
Step 14. Install the New Test Set Cables
for this step of the
procedure. Although only Option 423 is shown in the illustrations, Option 425
is similar in appearance. To see an image showing the location of these cables,
click the appropriate Chapter 6 bookmark (Ex: “4-Port Configuration, Options
423/029”) in the PDF Service Guide
1
.
1.
Connect the following wire harness and ribbon cables:
Connect the following, by referring to
—
①
—(N5247-20144) A59 noise downconverter to A9 noise board.
—
➁
—(N5247-20145) A59 noise downconverter to A9 noise board.
Connect the following by referring to
.):
—
①
—(N5245-60020) Verify A59 noise downconverter assembly J3 to
A9 noise board J1 "IF IN".
—
➁
—(N5245-60019) Verify A59 noise downconverter assembly J2 to
A9 noise board J5 "DET IN".
Connect the following by referring to
.):
—
①
—(N5245-60018) A59 noise receiver to the A23 test set
motherboard J550.
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
Use a 5/16-in torque wrench set to 10 in-lbs on all cable connections
except the front and rear panel bulkhead connectors. On these, use a 9
mm nutsetter or open end torque wrench set to 21 in-lb.
1. See
“Downloading the Online PNA Service Guide” on page 8
The reference designators in this step correspond to the figures
through
. But, some of the previous steps
are provided for your reference.