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7
. Carefully loosen the video board from the standoffs.
front panel and remove the video board from the standoffs.
assembly back approximately 1", just enough to expose the jumper block.
under "CONFIGURING THE JUMPER BLOCK" on page 9.
Lift and pivot board and front
panel......
Ribbon from LED
board to digital board
Be careful not to scratch the bottom
of the circuit board on standoff
threads.
Set video board and front panel assembly back far enough to clear jumper block.
CONFIGURING THE JUMPER BLOCK
With the jumper block exposed, apply a jumper across the appropriate pins to disable the desired mode(s) according to the
chart below.
Pin Designation
Mode
KCMD
Command Mode*
BRDC
Broadcast Mode
SCAN
Scan Mode
*Note: Putting a jumper across pins KCMD to
disable Command Mode will also disable
Broadcast and Scan Modes.
Once the desired jumpers are in place, reverse the disassembly process to re-assemble the KEEMUX-Sx
(or KEEMUX-Sx-O). Be particularly careful about connecting the ribbons back to the headers they were removed from and to
fully insert the ribbons to the headers. Note: The text on the video ribbons (non-OSD version) should face the right-hand side of
the case after insertion.
Do not turn the power ON until all connections have been completely and properly made and the unit
has been properly re-assembled.
With it loosened, grasp firmly the video board and
Once clear of the standoffs, pivot the
Jumper block
Standoffs
JUMPER BLOCK
DEFAULT JUMPERS
JUMPER
Drawing shows jumper across SCAN pins, disabling Scan Mode.
Broadcast Mode is still enabled.
9
Now follow the instructions
....and set back enough
to clear jumper block.
If the unit has an LCD
this jumper will be here.
L
S
B
K
DIP SWITCHES
C
C
R
C
A
D
M
D
N
C
D
E
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