1
Plug a key into the KEY jack on the rear panel. A
wmpound pods onto the mounting plate. Use your
positive keying voltage
is
present at this jack, so the
finger to distribute a thick coating over the plate.
leads of any grid block keyer must be reversed.
Keep the compound off the circuit board.
(
1
Turn the LEVEL control fully counterclockwire.
(
I
WASH YOUR HANDS.
(\I
Turn the SIDE TONE level control fully
11
/
(
,)
Graw the &es of the P.A. circuit board,
tilt
lt~p
counterclockwise (rear panel view).
edge toward the front panel, and push the six circuit
board connectors down onto connector H
so
the four
power transistor studs fit into the four holes in the
('
)
Depress the PWR, VOX, CW, and ON buttons. All
heat sink. Then push the P.A. assembly back against
other buttons should be
released.
the heat sink. Secure the assemblv with four 6-32
x
',
1
Tune to approximately
7000
kHz.
112"
screws at GR, GS, GT, and GU.
(
\
Push the phono plug on the P.A. cable into the PA
(
)
Close the key. The meter should read between 112 and
OUTPUT rocket on the circuit board.
1 as the LEVEL control is advanced.
(
\)
Close the key and turn the SIDE TONE control
CAUTION: Check to make wre that all five cables in the
clockwise (rear panel view) for a comfortable volume
P.A. compartment are properly connected. If you make an
level.
error at this point, you may have to replace the four power
vansistors.
(
7
Release the ON button.
(
1
Set front panel controls as follows. The position of
other controls is immaterial:
LEVEL:
Fully counterclockwise
BAND:
7.0
VOX DELAY: Fully counterclockwise
POSSIBLE CAUSE
CHART
1
No CW output or no side tone output.
A.
Refer to the transmitter
audiolregulator circuit
board in the "Maintenance" section.
r
(
)
Connect the
100
watt dummy load to the ANT
P.A.
(Power
Amplifier) CIRCUIT
BOARD
socket.
CAUTION:
The thermal compound in the following steps can
be
injurious to both your eyes and your clothes.
It
should be
handled with utmost care.
KEEP THE COMPOUND AWAY FROM YOUR EYES.
Wash
your hands immediately after using the compound.
Should you get any in your eyes, wash them out with water
at
once and get to a doctor as scan as possible.
KEEP THE COMPOUND OFF YOUR CLOTHES.
If
you get
the
wmpound on your clothes
it
may leave a permanent
white stain.
Y
Refer to Pictorial 12-39 (fold-out from this page) for the
following steps.
(
1
Connect the cable from the power supply.
APPLV THERMAL
COMPOUWD
om
(
,)
Refer to Detail 12-39A and position the P.A. circuit
Detail
12-39A
board (#851422) with the aluminum mounting plate
up. Then squeeze the contents of two thermal
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