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Removal and Replacement Procedures
AM700 Audio Measurement Set Service Manual
6–83
15. Recheck all the cable connectors for a tight connection.
NOTE. You may want to run the instrument at this point to make certain the
installation went well, before you put on the cover.
16. Replace the cabinet of the AM700. Refer to Cabinet Removal and Replace-
ment on page 6–55 for more information.
1. Remove the LCD assembly from the instrument and dissasemble the
assembly to gain access to the LCD backlights and backlight inverter board.
Refer to the LCD Flat Panel Display Assembly Remove and Replace
procedure on page 6–76 for directions.
NOTE. The next two steps are not needed for the newer version of LCD flat panel
display assembly. The LCD backlight cables can be easily disconnected from the
invertor boards. If you have the newer assembly with two inverter boards, go to
step 4.
2. Slide the LCD assembly to the side enough to gain access to the screws
holding down the backlight inverter board on the rear metal shield.
3. Remove the two screws holding the backlight inverter board to the LCD
assembly rear shield. Note orientation of the board on the shield for
reinstallation.
4. Disconnect the backlight connectors from the inverter board(s).
5. Turn the LCD flat panel over to gain access to the backlights.
6. Remove the small screw holding the backlight assembly to the LCD flat
panel (see Figure 6–42 for the location).
CAUTION. The backlights are easily broken if they are twisted or warped.
7. Gently push up on both ends of the plastic backlight assembly and rotate it
as shown in Figure 6–42 to unsnap the backlight from the LCD flat panel.
8. Repeat for the other backlight.
9. Place the retainers on the bottom edge of the new backlight assembly in the
holes in the LCD flat panel and press gently on both ends of the top edge of
the plastic backlight assembly to snap it into place.
LCD Backlight and
Backlight Inverter
Removal/Replacement