HP 70908A, Service Manual

Page: 270 / 335

Front P anel
Front P anel
CA UTION
This module contains components that can be damaged or destroyed by
electrostatic discharge . It should be serviced at a static-safe workstation.
(Refer to \Preparing a Static-Safe W ork Station " in Chapter 4.)
T o Remove the Front P anel
1. Remove the module cover . (Refer to the \Module Cover" procedure .)
2. Remove the three screws (1) holding the A10 power supply/driver in place and fold it down.
3. Disconnect W3 (2) from the front panel. Do not bend the cable or damage its center
connector .
4. Disconnect W1 (3) from A12J7.
5. Remove the two hex-screws (4) that hold the front panel to the base of the module . Use a
3.0 mm hex wrench (HP part number 8710-1392).
6. Pull the front panel (5) forward.
T o Replace the Front P anel
1. P osition the front panel against the module base .
2. Line up the front panel RF INPUT connector (6) and W3 (2), and loosely reconnect them. Do
not bend the cable when moving the module .
3. Use a 3.0 mm hex-wrench to replace the two hex-screws (4) that hold the front panel to the
base of the module and torque them to 20 inch-pounds .
4. T orque W3 (2) to 10 inch-pounds .
5. Reconnect W1 (3) to A12J7.
6. F old up the A10 power supply/driver and replace the three screws (1) that hold it in place .
T orque the screws to 20 inch-pounds .
7. Replace the module cover . (Refer to the \Module Cover" procedure .)
Replacing Major Assemblies 9-3