Chapter 3 169
Assembly Replacement
Procedure 3. A1A1 Keyboard/Front Panel Keys
Procedure 3. A1A1 Keyboard/Front Panel
Keys
Removal
1. Remove the front frame from the spectrum analyzer. Place the front
frame face down on the bench. For 8560EC instruments, follow the
instructions in "Procedure 2A. A1 Front Frame/A22 LCD (8560EC)."
For 8560E instruments, follow the instructions in "Procedure 2B. A1
Front Frame/A18 CRT (8560E)."
For 8560EC instruments, proceed to step 3. For 8560E instruments,
proceed to step 2.
2. Remove the front frame center support.
3. Disconnect A1W1 from A1A1J3 and the RPG cable from A1A1J2.
4. Remove the nine screws holding the A1A1 keyboard assembly to the
front frame and remove the assembly.
5. Remove the rubber keypad.
NOTE In 8560E instruments, the front panel softkey actuators are part of the
CRT bezel assembly and are not replaceable. Should the softkeys
become damaged, replace the bezel assembly.
Replacement
1. Install the rubber keypad, ensuring that the screw holes are visible
through the pad.
2. Place the A1A1 keyboard assembly over the rubber keypad. Secure
with nine panhead screws.
3. Connect the RPG cable to A1A1J2, and A1W1 to A1A1J3.
For 8560EC instruments, proceed to step 5. For 8560E instruments,
proceed to step 4.
4. Secure the center support to the front frame using two panhead
screws. The arrow stamped on the center support should point to the
top of the frame.
5. Install the front frame assembly. For 8560EC instruments, follow
the instructions in "Procedure 2A. A1 Front Frame/A22 LCD
(8560EC)." For 8560E instruments, follow the instructions in
"Procedure 2B. A1 Front Frame/A18 CRT (8560E)."
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