Henry Radio 3K -Classic Operating And Maintenance Manual page 9

SECTION 7. DISASSEMBLING YOUR AMPLIFIER
The description of this procedure uses screw numbers
which are shown on Figure 4. Therefore refer to that
diagram as necessary.
REMOVE THE TOP PANEL - Remove screws 2, 3, 6,
and 7 and pull the top perforated painted panel off of
the amplifier.
REMOVE THE POWER SUPPLY BACK PANEL - Re-
move screws 13, 14, 15, 16, 17 and 18 and pull the back
panel away from the power supply section. You must
unplug the power cord from the amplifier.
REMOVE CABLES - Disconnect all of the cables be
tween the RF section and the power supply section.
REMOVE THE RF DECK - First remove the BAND,
TUNE and LOAD knobs from the front panel. A
spline wrench is provided with the accessory kit to
remove the knobs. Then remove tha two screws from
the bottom of the back of the top wraparound. These
are accessed by reaching up from the back of the power
supply section and they are not shown on the diagram.
Remove two screws from the the bottom of the front
of the RF wraparound, on the bottom of the overhang.
These are shown as screws 19 and 20 on the diagram.
The RF section should now slide out of the back of
the wraparound. If you should need to send the RF
section back to the factory for repair you should just
send the RF chassis, not the entire painted wraparound.
Most service of the amplifier can be accomplished with-
out any further disassembly. The front panel can now
be accessed from the rear, the blower from the top and
bottom, and the power supply from the back.
REMOVING THE RF WRAPAROUND - Should you
find it necessary to romove the top wraparound, remove
the seven screws spaced around the inside bottom lip of
the wraparound. The are accessed through the top of
the amplifier. Next, disconnect the metering harness
and the wiring to the blower (below the wraparound).
The cabinet will then lift off of the power supply .
REMOVING THE POWER SUPPLY WRAPAROUND -
Tip the power supply over carefully and remove the four
screws (21, 22, 23 and 24) holding the painted power
supply wraparound on to the bottom plate of the power
supply. Tip the power supply back upright and VERY
CAREFULLY spread the back edges of the wraparound
and slide' it off the front of the frame. The wiring to
the circuit breaker, SSB/CW switch, and fuses is attached
to the wraparound so be very careful. The 2 level power
supply frame is welded and does not come apart.