A22 Front Panel Keyboard Removal; Tools Required; Procedure - Agilent Technologies E4991A Service Manual

Replacement Procedure

A22 Front Panel Keyboard Removal

A22 Front Panel Keyboard Removal

Tools Required

• Pozidriv screwdriver, pt size #1 (small) and #2 (medium)
• Soldering Iron

Procedure

Step 1. Remove the front panel as described in"Front Panel Removal".
Step 2. Remove the six screws fastening the LCD cover to the front panel.
Step 3. Disconnect the flat cable (item 8 in Figure 6-2 on page 236) from the A22 Front Panel
Keyboard.
Step 4. Remove the eight screws fastening the A22 to the front panel.
Step 5. Remove the front panel knob to remove the A22.
Step 6. Remove two screws fastening the LED board to the front panel. The LED board is
connected to the A22 using the four wire cables.
Step 7. Remove the two wire cables from the power switch assembly (item 13 in Figure 6-2) using
a soldering iron.
Step 8. Remove the A22.
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