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Assembly and Disassembly Guidelines
Agilent E4418B/E4419B Service Guide 5-15
Removing the A3 Front Panel Assembly
1. Disconnect the following cables from the A2 processor assembly:
n power reference semi-rigid (When replacing use the torques detailed on
page 5-18.)
n front panel keypad
n front panel LCD
Note Care should be taken when disconnecting the front panel keyboard and LCD.
Move the A2 plastic support bracket to its forward position using the two
side levers, unclip the flexi-cable retaining bar on the front panel keypad and
front panel LCD cable connectors and disconnect the cable.
2. Disconnect the flex circuit from the measurement assembly.
Note Care should be taken when disconnecting the flex circuit from the
measurement assembly.
The flex circuit assembly is released by pushing the connector tab forward
and lifting.
To replace the flex circuit, loop it as shown on page 5-17, and connect the
flex circuit as shown in the figures on page 5-12.
3. Remove the center screw from the right hand side of the front panel.
4. Remove the front panel by pressing in the metal tab on the front panel as
shown and push down on the side of the chassis until the standoffs are
cleared from the holes.
Note After replacing a front panel assembly, the display brightness and contrast
must be adjusted. Refer to Chapter 3 “Adjustments”.
tab
screw