Installation Instructions
XL1000Pro
Retrofit Instructions
8. Inspect Tube and Cavity apparatus to ensure there are no wires or cables attached to it. This
includes all coax cables. Carefully unbolt the housing from the braces. When all the bolts are removed,
carefully lift the tube and cavity off the braces. Lower the tube and cavity 2-3 inches, then tip the top of the
Tube and Cavity apparatus toward the back of the transmitter. When the top of the Tube and Cavity has
passed through the opening in the back of the transmitter then pull the Tube and Cavity apparatus out of the
transmitter. Set it aside out of workspace area. Unbolt and remove brace bars the Tube and Cavity
apparatus rested on.
9.
CAUTION: THE HIGH VOLTAGE POWER SUPPLY ASSEMBLY IS VERY HEAVY
AND SHOULD BE REMOVED WITH ASSISTANCE.
The High Voltage Power Supply is hard wired
to the junction box, so make sure you unfasten the wires from the junction box prior to removing.
Disconnect the High Voltage Power Supply power cord from the junction box located in the rear of the
transmitter. Make sure all wires and cables have been disconnected from the High Voltage Power Supply.
From the front of the transmitter unscrew the anchor screws that hold the High Voltage Power Supply
drawer. Pull the High Voltage Power Supply Drawer out as far as it will go. When the High Voltage
Power Supply has reached the safety clips at the end of the rail press the safety clips, (located on the
outside of each rail) in with a screwdriver disengaging the safety catch. After the safety clips are
disengaged, continue to pull the High Voltage Power Supply Drawer out of the transmitter making sure it is
free of all obstructions until it is completely free of the transmitter. Set it aside out of the way of your
workspace.
10. Making sure all cables are disconnected from the modulator, from the front of the transmitter
remove anchor screws holding the modulator in place. Carefully remove the modulator from the
transmitter. Set it aside out of the way of your workspace.
11. From the rear of the transmitter locate the Driver Output Isolator, Driver Output Directional
Coupler, and Input Bandpass Filter. Make sure all cables are disconnected from Isolator, Filter and
Directional Coupler. Disconnect the Isolator from the Input Filter. From the side of the transmitter remove
the screws that hold the Directional Coupler to the mounting plate. Carefully remove the Directional
Coupler. Set it aside out of the way of your workspace. Carefully remove the Bandpass filter. Set it aside
out of the way of your workspace. Carefully Remove the Input Isolator. Set aside out of the way of your
workspace. Each of these will be used later during the re-assembly process.
12. Locate and remove the Filament Bypass Resistor. Set it aside out of the way of your workspace.
13. From the rear of the transmitter check to see the wires and cables have been removed from the
Output Combiner and Splitter and LED Panel PC Board on the front panel. From the front of the
transmitter unscrew the front panel anchor screw and remove the front panel from the transmitter. Set
aside out of the way of your workspace.
14. From the front of the transmitter unscrew the anchor screws that hold the Bias/Fil/Screen
Assembly to the front of the rack. Pull the Bias/Fil/Screen Assembly out as far as it will go. When the
Bias/Fil/Screen Assembly has reached the safety clips at the end of the rail, press the safety clips, (located
on the outside of each rail), in with a screwdriver disengaging the safety catch. After the safety clips are
disengaged, continue to pull the Bias/Fil/Screen Assembly out of the transmitter making sure it is free of all
obstructions until it is completely free of the transmitter. Put Bias/Fil/Screen Assembly in a place you are
comfortable working on it. Unfasten fasten the top of the Bias/Fil/Screen Assembly and place it aside. Cut
the red wire in the twist lock and seal it with a wire nut, so no future contact can be made. Find and cut the
black wire running from the power terminal strip to the Transformer marked T202 and seal it with a wire
nut. Replace the top cover and fasten it down. Set this assembly aside out of the way of your workspace.
15. At this time the only original part remaining of the XL1000 should be the output metering panel
and all wires and cables should have been unhooked and removed from the panel. If there are any cables or
wires connected to the metering panel at this time mark them and remove and set them aside for later use.