Removal and Replacement
Maintenance
818
9. Reinstallation:
a. If you are replacing the menu flex circuit, perform the following sub
parts:
H Wipe the front of the chassis using isopropyl alcohol and a clean,
lint free cloth. Let it dry.
H Find the score line in the adhesive backing and peel the backing
off the menu flex circuit.
H Carefully align the three holes on the menu flex circuit to the
locator studs on the front of the main chassis. When the align
ment is correct, press the flex circuit against the chassis so it
adheres to the chassis.
H Clean the surface of the menu flex circuit using isopropyl alcohol
and a clean, lint free cloth.
b. Reconnect the main board and menu flex circuit cables to the back of
the front panel assembly.
c. Carefully reinsert the front panel assembly into the main chassis left
side first.
1. Have handy a screwdriver with a size T 15 TorxR tip (Items 1 and 2).
2. Remove the front trim ring as outlined on page 815.
3. Set the oscilloscope so its top side is down on the work surface and its
front is facing you.
4. Ifpresent, unplug the option board cables.
5. Unplug the power supply cable at the power supply.
6. Unplug the monitor cable at the monitor assembly and power supply;
carefully route the cable out through its access hole.
7. Unplug the front panel cable.
8. Using Figure 89 as a guide, remove the eight T 15 TorxR screws secur
ing the main board assembly to the chassis.
Main Board
Assembly
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