4-4
MAINTENANCE Orban Model 8400
9. Removing the DSP Board.
A) If you have not done so yet, remove the top cover (step 6 on page 4-3).
B) Be sure that power is off.
C) Disconnect the ribbon cable from J504.
D) Remove the five Phillips screws holding the DSP board to the bottom of the chas-
sis.
E) Pull the board toward the front of the chassis to unplug it from the motherboard.
10. Removing the front and rear PC Card boards.
A) If you have not done so yet, remove the top cover (step 6 on page 4-3).
B) If you have not done so yet, remove the power supply (step 7 on page 4-3).
C) Remove the rear board.
a) Remove the two screws that hold the rear board to the vertical shield plate.
b) Lift the board up to remove it from its socket.
Gently rocking the board from side to side can aid in disengaging the multi-pin connec-
tor.
D) Remove the front board.
a) Remove the screw and nut holding the front board to the angle bracket that is
part of the display shield assembly.
b) Lift the board up to remove it from its socket.
Gently rocking the board from side to side can aid in disengaging the multi-
pin connector.
11. Removing the Front Panel
To service the headphone amplifier, the color LCD display, the pushbuttons, or the rotary
encoder, it is first necessary to remove the front panel assembly.
A) Remove the six Phillips head screws that hold the front panel to the main chassis.
These are located in two groups of three on the sides of the main chassis,
close to the front panel.
B)
Imagine a hinge on the bottom of the front panel, and tilt it toward you.
Do not stress the cables connecting the front panel to the main chassis.
There is an RFI-prevention contact spring between the front panel and the
main chassis. Set this aside for later reinstallation.
To Next Page
Loading...
