To Remove And Replace The Lcd Display - HP 1660E Series Service Manual

WARNING
Replacing Assemblies
To remove and replace the LCD display
To remove and replace the LCD display
1 Using previous procedures, remove the following assemblies:
• Handle
• Rear Feet
• Cover
• Disk Drive Assembly
• Power Supply
• CPU Board
• Rear Panel
• Acquisition Board (mounting plate only)
Hazardous vltages exist on the LCD Inverter. To avoid electrical shock, disconnect power
from the instrument before performing the following procedure. After disconnecting the
power, wait at least three minutes for the capacitors
in
the power supply
to
discharge before
servicing the instrument.
2 Remove the LCD display
a. Disconnect the LCD data cable from the connector on back of the LCD display.
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b. Disconnect two cables on the LCD display from the LCD Inverter.
c. Remove four screws, one at each comer of the LCD display, that secure the
display to the bezel.
d. Remove the LCD display from the bezel.
When connecting the LCD data sable to the LCD display, ensure the blue side of the
cable faces toward the LCD display.
3 Remove the Inverter Board
a. Disconnect the CPU Inverter Cable from the Inverter Board.
b. Remove two screw that secure the LCD Inverter to the bezel.
c. Remove the interter from the bezel.
The LCD display and inverter are replaced as one unit.
4 If needed, remove four screws that secure the bezel to the chassis. Remove the bezel
from the chassis.
The lense is attached to the bezel with foam gasket. If the lense must be replaced,
remove the lense from the bezel.
Reverse this procedure to install the LCD display.
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