Contact Ing The Factory - Henry Radio 3K Classic Mark II Operating And Maintenance Manual

SECTION 6.10
CONTACT ING THE FACTORY
If you have any questions concerning the service of the amplifier, you
should call or write the amplifier service department at Henry Radio.
If
it ever becomes necessary to return the amplifier to the factory for repair
you should first decide if you need to send the complete amplifier or just
the RF chassis.
Next pack the equipment in proper packing material to pre-
vent shipping damage,
include a short letter describing the exact problem,
insure the package for the replacement value of the merchandise, and ship
to
our amplifier service department.
Ceramic power tubes can be shipped
installed in the RF chassis.
SECTION 7.
DISASSEMBLING YOUR AMPLIFIER
The description
of this procedure uses screw numbers which are shown on
Figure 3.
Refer to that drawing as necessary. CAUTION: Unplug the amp-
lifier from the AC line before starting this procedure.
REMOVE THE TOP PANEL - Remove screws 2, 3, 6, and 7 and pull the top per-
forated painted panel off of the amplifier.
REMOVE THE BACK PANEL OF THE POWER SUPPLY - Remove screws 13, 14, 15, 16,
17, and 18 and pull the back panel away from the power supply section.
REMOVE CABLES - Disconnect all of the cables between the RF section and the
power supply section.
REMOVE THE RF DECK - First remove the BAND, TUNE, and LOAD knobs from the
front panel. Then remove 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.
They are not shown on the diagram. Remove two screws from
the area overhanging the front - screws 19 and 20.
The RF deck should now
slide out of the back of the wraparound. If you should need to send the RF
section back, for repair,
you should send just the RF chassis, not the com-
plete 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 top or bottom, and the power supply from the bark.
REMOVE
THE RF WRAPAROUND - Should you find it necessary to remove the top
wraparound,
remove the seven screws spaced around the inside bottom lip of
the wraparound. They are reached through the top of the amplifier.
Next
disconnect the meter wiring harness and disconnect the wiring to the blower
(below the RF wraparound).
The cabinet will then lift off the power supply
cabinet.
REMOVE
THE POWER SUPPLY WRAPAROUND - The RF wraparound must be removed be-
fore
you can remove the power supply wraparound. Carefully tip the power
supply over to remove the four screws holding the painted wraparound to the
bottom plate of the power supply.
Tip the assembly back upright and then
VERY CAREFULLY spread the back edges of the wraparound and slide it off the
front of the frame.
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