ponent can then be correctly soldered in its place, Observe
soldering precautions and techniques as described in Solder-
ing Techniques later in this section.
The interconnecting wires to the boards are sufficiently
long that the boards may be loosened and re-positioned
for troubleshooting without disconnecting the pin connectors.
The procedure for removing these circuit board assemblies
is as follows:
1. Remove the mounting screws holding the board in posi-
tion.
2. Slip the cable out of the delrin cable clamps if the
IF board is to be removed.
3. Disconnect the necessary pin connectors to allow the
board to be lifted and turned as required for maintenance.
4. If complete removal is desired, remove all the pin con-
nectors and soldered leads.
5. To replace the board, reverse the removal procedure.
Correct wire and pin connections for each circuit board
assembly are shown in Figs. 4-3 through 4-9.
Make certain the pin connectors are perpendicular with
the pins when connecting to prevent bending or spreading
the pin connectors. If the connectors are grasped near the
wire end by a pair of needle nose pliers, their removal
or installation is relatively easy.
Removal of the High Voltage Compartment
Components in the high voltage compartment can be
removed far maintenance or replacement as follows:
1. Remove the two mounting screws and high voltage
shield over the compartment.
2. Slide the high voltage components out of the plastic
compartment and replace as necessary.
3. Reverse the procedure for replacing the high voltage
assembly.
Removing the Honeycomb Assembly
1. Remove the six (6) nuts and washers that hold the IF
ATTENUATOR dB switches at the front panel assembly.
2. Remove the chassis mounting screw and grounding
lug located at the outside rear end and loosen the inside
rear mounting screw. See Fig. 4-10.
Fig. 4-3. Vertical Amplifier circuit board with wiring color code to pin connectors.
4-4
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