Orban OPTIMOD 6200, Руководство по эксплуатации

Страница: 121 / 195

OPTIMOD MAINTENANCE
4-3
A) Disconnect the 6200 and remove it from the rack.
Be sure power is disconnected before removing the cover.
Warning: Hazardous voltage is exposed with the unit open and the power
ON.
B)
Set the unit upright on a padded surface with the front panel facing you.
C)
Remove all eighteen screws holding the top cover in place, and lift the top cover
off.
Use a #1 Phillips screwdriver.
2. Removing the Display Assembly. (Model 6200 OPTIMOD-DAB)
[Refer to step 3 to remove 6200S Display board.]
A)
Detach the four ribbon cables that connect the display board assembly to the main
board and power supply board.
a)
First, identify the four cables:
A larger white flat cable connecting to jumper J102 on the main board;
A gray ribbon cable connecting to a DIP header at jumper J103 on the main
board.
A smaller white flat cable connecting the display assembly to the power sup-
ply at jumper J202.
A two-wire cable connecting the display assembly to the power supply at
jumper J201.
b)
Gently lift each cable up from where it connects to its jumper, so that the
jumper pins unseat without bending or breaking.
If present, remove the white fastener that ties the two-wire cable next to the
large black cables of J4.
B)
Detach the front panel from the unit.
a)
Disconnect the three-wire cable at the back of the encoder.
b)
Detach the ground lug that connects the panel's ground wire to the chassis.
Use a 1/4-inch nut driver or needle-nose pliers.
c) Remove the front panel.
The front panel is held in place by four ball studs at each corner. It should
snap off, with a little force.
C)
Remove the ten gold-colored screws and washers that connect the display board to
the front of the chassis.
Use a screwdriver.
D) Remove the display board assembly by removing the tape from the top front edge
of the chassis, so that the white ribbon cables are no longer attached to the chassis
and the display panel is free.