Heathkit IG-18 - Page 67

DIFFICUL TY
Meter inoperative.
Sine wave output ok.
Sine wave distorted.
FACTORY REPAIR SERVICE
You can return your completed kit to the Heath
Company
Service Department to have it repaired
for a minimum service fee. (Kits that have been
modified will not be accepted for repair.) If you
wish, you
can deliver your kit to a nearby Heath
Authorized
Service Center. These centers are
listed in your Heathkit catalog.
To be eligible
for replacement parts under the
terms of the warranty, equipment returned for
factory repair service, or delivered to a Heath
Authorized
Service Center, must be accompanied
by the invoice
or the sales slip, or a copy of
either. If you send the original invoice or sales
slip, it will be returned to you.
If it is not convenient to deliver your kit to a
Heath Authorized
Service Center, please ship it
to the factory at Benton Harbor, Michigan and
follow
the following shipping instructions:
Prepare a letter in duplicate, containing the
following information:
• Your name and return address.
• Date of purchase •
•
A brief description of the difficulty.
• The invoice or sales slip, or a copy of
either.
Page 59
POSSIBLE CAUSE AND SUGGESTED CURE
1. Check diodes D3 and D4.
2. Check control R21.
3.
Meter pointer stuck.
4. Meter coil open.
WARNING: When
testing the meter for
continuity, use only the highest resistance
range of the ohmmeter.
1. Feedback control set too high.
2.
Bias control not set correctly.
3. Check Q10.
4. Check Q5, Q4, Q1, Q2, and Q3.
5.
Improper ground connections between Gen-
erator and associated equipment.
6. Low
line voltage.
• Your authorization to ship the repaired
unit back to you C.O.D. for the service
and shipping charges, plus the cost of
parts not covered by the warranty.
Attach the envelope containing one copy of
this letter directly to the unit before· pack-
aging, so that we do not overlook this impor-
tant information. Send the second copy of the
letter by separate mail to Heath Company,
Attention:
Service Department, Benton Harbor,
Michigan.
Check the equipment to see that all parts and
screws are in place. (Do not include wooden
cabinets when shipping receivers, tuners, am-
plifiers, or TV sets, as these are easily
damaged in shipment.) Then, wrap the equip-
ment in heavy paper. Place the equipment in
a strong carton, and put at least THREE
INCHES of
resilient packing material (shredded
paper, excelsior, etc.) on all Sides, between
the equipment and the carton. Seal the carton
with gummed paper tape, and tie it with a
strong cord. Ship it by prepaid express, United
Parcel Service, or insured parcel post to:
Heath Company
Service Department
Benton Harbor, Michigan 49022