HP 8481A - Disassembly and Reassembly; Power Sensor Disassembly

08481-90049
HP 8481A/82A/83A
Disassembly
Procedure
Disassemble the Power Sensor by performing the following steps:
Disassembly must be performed in sequence described below, otherwise
damage may be caused to the two gold wires between the bulkhead
assembly and the input amplifier assembly. If these
wires are damaged,
the A1 Bulkhead Assembly must be repaired or returned to the factory
for repair.
Caution
<4
Every Power Sensor has an individually prepared graph
on the housing.
If more than one power sensor is disassembled at a time, be sure to
mate the correct Power Sensor and housing when reassembling.
Note
Insert the blade of a large screwdriver between the two-piece plastic
shell at the rear of the Power Sensor. Gently pry the
sections apart.
(See fi gure 9.)
Proceed to the other side of the connector and again pry the cover
sections apart. Remove the shells and magnetic shields.
Position the Power Sensor as shown in fi gure 8 (top). The small hole
5 should be on the left side of the RF input connector. Remove the
alien cap screws 1, 2, 10, and 13. Loosen 11 and 12. Remove the
upper chassis from the Power Sensor.
Remove the spring clamp cap screw 7 to free the gold leads which
come from the Bulkhead Assembly.
Remove cap screws 3, 4, and 5.
Slide the Bulkhead Assembly straight out from the chassis.
Remove cap screws 8, 9, 11, 12, 14, and 15.
Lift the A2 Input Amplifier and J1 connector out of the chassis.
1.
2.
3.
4.
5.
6.
7.
8.
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