Orban OPTIMOD 6300 Operating Manual page 236

4-4
MAINTENANCE
D) Remove the plug that connects the power supply to the AC line socket.
E) Unplug the cable connecting the output of the power supply to the I/O+DSP
board.
F) Using a hex nutdriver, remove the threaded standoff that supports the power
supply's insulating cover.
G) Remove the three Phillips screws holding the power supply to the main chas-
sis.
H) Carefully lift the power supply up to remove it.
6. Reattaching the Power Supply:
A) Set power supply into main chassis, so that it aligns with its associated stand-
offs.
B) Thread, but do not tighten, the three Phillips screws that hold the power sup-
ply board to the main chassis.
C) Thread the long threaded standoff in the remaining mounting hole. Tighten
it firmly.
D) Tighten the three Phillips screws that hold the power supply board to the
main chassis.
E) Reattach the plug that connects the power supply to the AC line socket.
F) Reattach the cable that connects the power supply board to the I/O+DSP
board.
G) Secure the insulating cover to the long standoff. This cover must be replaced
for safety.
7. Replacing the Control board and I/O Board+DSP board:
Referring to steps 3 and 4, follow the instructions in reverse.
8. Replacing the Front Panel Assembly:
A) Set the front panel, face down, on a soft cloth to prevent scratches.
B) Lightly reattach the bottom and top circuit boards by mating the four plugs
and jacks. Use care to align the pins with the jacks so that all pins are correctly
aligned and no pins are bent. Do not push the pins all the way into the jacks
yet; leave room between the upper and lower boards for spacers.
C) Reattach the board assembly to the front panel using the eight #1 Philips-
head screws and spacers removed in step (2.E) on page 4-2:
a) Thread each screw through a spacer placed between the upper and lower
circuit boards.
b) Push down the top board until it rests on the spacers.
c) Align the screws with the threaded standoffs on the front panel.
ORBAN MODEL 6300