Removal Of The Display Driver Board, Inverter Board, And Lcd - HP 8560E Service Manual

Assembly Replacement
Procedure 2A. A1 Front Frame/A18 LCD (8560EC)
Removal of the Display Driver Board, Inverter Board,
and LCD
After the front panel has been removed, follow these steps to remove
the display driver and LCD:
1. Disconnect the following cables from the A17 display driver board.
These can be disconnected through openings in the display driver
shield. See Figure 3-2 on page
a. W60, a ribbon cable that connects J1 on the A17 display driver
board with J8 on the A2 controller board.
b. W61, which connect J7 on the A17 display driver board with J9 on
the A2 controller board.
2. Remove the four screws (0515-0665) that secure the display driver
shield to the LCD backplate. Use a T-10 TORX driver set to 6 in./lbs.
Remove the display driver shield.
3. Disconnect the following cables from the A17 display driver board:
a. W64, the VGA ribbon cable, which connects J4 on the A17 display
driver board to J1 on the rear panel.
b. W63, a ribbon cable that connect J5 on the A17 display driver
board with the LCD.
4. If you want to remove the A17A1 inverter board, proceed to step a. If
you intend to keep the A17A1 inverter board secured to the A17
display driver board, proceed to step 4.
a. Remove the two screws (0515-0430) which secure the A17A1
inverter board to standoffs on the A17 display driver board.
b. Disconnect W62 from J6 on the A17 display driver board (do not
disconnect W62 from the A17A1 inverter board, to which it is
attached).
5. Remove the two backlight cables from the inverter board.
6. Remove the four screws (0515-0372) which secure the display driver
board to the LCD backplate. Use a T-10 TORX driver. Remove the
display driver board.
7. Remove four black cushions (0400-0333) from the inner-most posts
on the LCD backplate.
8. Remove the two large screws (0515-0382) which secure the LCD
backplate to the left side of the front panel chassis. Use a T-15 TORX
driver.
9. Remove the four (0515-0430) screws which secure the LCD
backplate to the right side of the front panel chassis. Use a T-8
TORX driver.
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154.
Chapter 3