Heathkit Q MULTIPLIER Assembly And Operation Manual page 15

BROAD PEAK: This position allows a higher gain than the SHARP PEAK whena wider bandpass
is desired. It also allows the Q multiplier to be used as a BFO by «dvancing the peak adjust
control to just past the oscillation point.
IN CASE OF DIFFICULTY .
Mistakes in wiring or poorly soldered connections are the most common cause of difficulty.
Consequently, the first step is to recheck all wiring against the pictorial andschematic diagram.
Often having a friend check the wiring will locate an error consistently overlooked.
With miniature sockets, there is a possibility of shorts between adjacent socket terminals due
to the close spacing. This should be checked and if any doubt exists, the terminals should be
pried apart until obvious spacing can be seen between them.
There is alsothe possibility of the coils being open, caused by damage tothe wire at the termin-
als. This may be checked with an ohmmeter WITH ALL VOLTAG#¢S JFF. Resistors may have
been damaged due to excess heat. These also may be checked with an ohmmeter.
Check the tuning capacitor to see that the plates do not short in any position.
Typical tube socket voltage readings taken with a vacuum tube voltmeter and using a 250 volt
supply with one side of the filament grounded.
REPLACEMENTS
Material supplied with Heathkits has been carefully selected to meet design requirements and
ordinarily will fulfill its function without difficulty. Occasionally improper instrument opera-
tion can be traced to a faulty tube or component. Should inspection reveal the necessity for re-
placement, write to the Heath Company and supply all of the following information:
A. Thoroughly identify the part in question by using the part number and description found in
the manual parts list.
B. Identify the type and model number of kit in which it is used.
C. Mention the order number and date of purchase.
D. Describe the nature of defect or reason for requesting replaceme it.
The Heath Company will promptly supply the necessary replacement. Please do not return the
original component until specifically requested to do so. Do not dismantle the component in
question as this will void the guarantee. If tubes are to be returned, pack them carefully to
prevent breakage in shipment as broken tubes are not eligible for replacement. This replace-
ment policy does not cover the free replacement of parts that may have been broken or damaged
through carelessness on the part of the kit builder.
SERVICE
In event continued operational difficulties of the completed instrument are experienced, the fa-
cilities of the Heath Company Service Department are at your disposal. Your instrument may
be returned for inspection and repair fora service charge of $3.00 plus the cost of any additional
material that may be required. THIS SERVICE POLICY APPLIES ONLY TO COMPLETED
INSTRUMENTS CONSTRUCTED IN ACCORDANCE WITH THE INSTRUCTIONS AS STATED
IN THE MANUAL. Instruments that are not entirely completedor instruments that are modified
in design will not be accepted for repair. Instruments showing evidence of acid core solder or
paste fluxes will be returned not repaired.
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