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8-10A LCD BACKLIGHT
LAMP
This paragraph provides instructions for the removal and replacement
of the LCD Backlight Lamp, which is recommended at approximately
10,000 hours of operation, or if the display becomes dim.
NOTE
The front panel assembly does not have to be removed.
Preliminary:
q
Switch 373XXA power off. Remove the power cord.
q
Remove all covers (paragraph 8-3).
Remove/Replace Procedure:
Step 1. Remove the LCD assembly (paragraph 8-10).
Step 2. Remove the Backlight Lamp cover as follows:
On Sharp LQ9D169 LCD displays, remove the three Phil-
lips screws on the side opposite the PCB, then lift off the
cover.
On Sharp LQ9D340 LCD displays, on the side opposite the
PCB, remove the tape covering the center catch. Starting at
one end, very carefully push each catch clear of its tab
while gently lifting the cover. Release all five catches and
remove the cover.
Step 3. Carefull replace the Backlight Lamp, while being careful
not to apply pressure to the area where the glass tube and
the end caps of the Backlight Lamp meet.
Step 4. Reinstall the Backlight Lamp cover.
Step 5. Reinstall the LCD Assembly and reconnect electrical con
-
nectors.
Step 6. Reinstall the top cover.
Step 7. Turn the instrument on. Adjust the Brightness Potentiome
-
ter at the rear panel for maximum display brightness.
8-11 FLOPPY DISK DRIVE This paragraph provides instructions for removing and replacing the
Floppy Disk Drive assembly.
NOTE
It is not necessary to remove the front panel assembly to
perform this procedure.
REMOVE AND REPLACE FLOPPY DISK DRIVE
373XXA MM 8-17