Orban OPTIMOD 6300 Operating Manual page 235

OPTIMOD 6300 DIGITAL
B) Using a 3/16-inch hex nut driver, remove the four hex nuts holding the DB-25
and DB-9 connectors to the rear panel of the chassis.
C) If you have not done so yet, remove the cables that connect the display as-
sembly to the control board (step 2 on page 4-2).
D) Disconnect the ribbon cable connecting the control board to the I/O+DSP
board.
E) Using a #1 Philips screwdriver, remove the four corner screws holding the con-
trol board to the chassis standoffs.
F) The control board is now free and can be removed from the chassis.
4. Removing the I/O+DSP (Input/Output+DSP) Board:
A) If you have not done so yet, remove the top cover (step 1, above).
B) Unlock all XLR connectors, using a jeweler's screwdriver: engage the locking
mechanism (in the center of the triangle formed by the three contact pins)
and turn counterclockwise until the XLR connector is no longer attached.
C) Using a deep hex nut driver (preferred), a small crescent wrench, or a pair of
slip-joint pliers (in an emergency), remove the nut and lockwasher fastening
the BNC connector to the chassis.
D) Remove the ribbon cable that connects the I/O+DSP board to the control
board.
E) Remove the short two-conductor cable that connects the I/O+DSP board to
the control board.
F) Disconnect the cable connecting the power supply to the control board. There
are two connectors; unplug both. Note the lead dress so you can reassemble
the unit correctly.
G) Remove the twelve #1 Phillips screws (and their washers) that connect the
I/O+DSP board to the chassis.
H) Carefully pull the I/O+DSP board toward the front panel to clear the XLRs
from their housings. Then lift the board out of the chassis.
5. Removing the Power Supply:
IMPORTANT: The power supply has no user serviceable components because re-
placing components with other than exact replacements could cause the supply
to become unsafe and/or to generate unacceptable EMI. If the power supply
fails, please contact Orban Customer Service (custserv@orban.com) to obtain an
exact replacement.
A) Verify that the 6300 is disconnected from the AC line.
B) If you have not done so yet, remove the top cover (step 1, above).
C) Remove the screw holding the power supply's insulating cover and remove
the cover. For safety, this cover must always be in place when the 6300 is con-
nected to the AC line.
4-3
MAINTENANCE