1.
Unplug the ribbon cables of the step attenuator to be removed. (Remove the regulator board (7) to
access the ribbon cable sockets if necessary.)
2.
Remove the attenuator mounting bracket screws.
3.
Remove the attenuator and mounting bracket from the test set.
4.
Remove the mounting bracket from the attenuator before sending the attenuator to HP for repair.
1.
Set the test set upright and pull the metal and plastic cover off the capacitors.
2. Turn the test set upside-down and remove the bottom cover.
NOTE: It is important to plug in the test set before performing step 3.
3.
Discharge each capacitor terminal (large pozidrive screw on the bottom side of the test set) through
a high wattage resistor and clip lead to earth ground. Each capacitor has two (2) terminals.
Discharge every capacitor terminal for 30 seconds.
4. To remove a capacitor, remove the corresponding pair of screws and pull the capacitor out of the
test set.
Refer to Figure 5-9 and the following text to repair 3.5 mm connectors.
LOCK
CONNECTOR
WRENCH
FLAT
Figure
5-7.
Exploded Diagram of 3.5 mm Connector
NOSE
CONNECTOR
5-12
Test Set Troubleshooting
HP
Test