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Model 423A/847.QA
d.
Let resistor cool and then check resistance
from male BNC pin through resistor; resistance meas-
sured should be ±10% that indicated by the color
coding.
e.
Replace lockwasher and male BNC con¬
nector.
51. Replacing Female BNC Connector
a.
Remove female BNC connector. To re¬
move or install BNC connector, use a BNC wrench
or use a male BNC connector as a wrench to pre¬
vent damage to the connector.
b.
Unsolder contact spring.
c.
Prepare replacement female BNC
connector:
(1)
Cut center conductor lead to approx¬
imately 0.79 mm (1/32 in.)
(2)
With flat file, smooth end of lead;
remove burr with tweezers or simi¬
lar metal instrument.
d.
Slip contact spring over center conductor
lead, and solder.
Use solder sparingly or it will creep back
on spring. Solder on spring destroys its
usefulness and is difficult to remove.
e. Let contact spring cool and then screw
connector into mount.
52. Replacement of APC-7 Connector Center
Contact
The disassembly and assembly instructions for the
APC-7 connecotr is covered in Figure 6.
53. The replacement procedure for the APC-7
connector center contact is covered in Figure 5.
55. The critical dimensions for the type N connec¬
tor are covered in Figure 7.
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