Hafler DH-110 Instructions For Assembly And Operation Manual page 23

Your DH-110 Preamplifier has been carefully engineered
to provide many years of use without maintenance or ser-
vice. Factory assembled units undergo many physical and
electrical tests before shipment. The circuit board in kits is
similarly tested to meet all primary specifications before it
is packed. Nevertheless, shipping damage can occur, or
human error may intervene to make service necessary.
Because many of the components in this refined design
are not readily available, and because substitution of
apparently similar parts can easily compromise its perfor-
mance, we strongly recommend that you make use of our
complete factory service facilities, or order exact re-
placement parts from the factory.
It is the owner's responsibility to return the unit, freight
prepaid, to the factory service facility. Units shipped
freight collect will not be accepted. Shipment should be
made via United Parcel Service whenever possible. We
will not be responsible for damage caused by parcel post
shipment; repairs in this case will be made solely at the
owner's expense. Be sure you insure for the full value of an
assembled unit.
Use the original carton and packing materials, and en-
close all of the following:
1. Complete shipping address (Post Office Box numbers
are not acceptable for UPS return)
2 . Serial number (if not on the unit).
3 . Copy of dated bill of sale (for service under warranty)
4. Description of malfunction. If it is intermittent, please
indicate this.
5 . You may also wish to attach your address directly to the
unit, or to the line cord.
All service work is guaranteed for 90 days.
Warranties apply only to the original purchaser, and are
void if the Preamplifier has been modified without factory
authorization, or if parts have been substituted which, in
the factory's opinion, are not suitable, or if the Pre-
amplifier has been physically or electrically abused or
used for some purpose for which it was not designed or in-
tended.
SERVICE POLICY AND LIMITED WARRANTY
Technical assistance to help you locate the source of a
problem may be obtained by calling the Hafler Company
Technical Service Department at 609-662-6084 between 8
am and 4:30 pm, eastern time. It will be helpful to know the
serial number, and the results of any tests you have per-
formed. However we do not recommend that you attempt
your own servicing unless you are knowledgeable in this
regard. If you return a properly functioning Preamplifier
for service or a checkout, a charge will be made for the
checkout time required, as well as for packing and ship-
ping.
WARRANTY FOR FACTORY ASSEMBLED UNITS
The assembled DH-110 is warranted for three years from
the purchase date, including parts, labor and normal return
shipping costs from the factory to the owner within the
continental United States. The owner is responsible for
shipment to the factory and must submit a copy of the
dated bill of sale.
WARRANTY FOR KIT-BUILT
The parts in a DH-110 kit are warranted for a full year
from the purchase date. If a defective component is found
on a circuit board or in the kit, simply return the individual
part to the factory prepaid, together with the serial number
and the date of purchase. It will be replaced at no charge.
If you cannot locate the cause of a problem in your DH-
110, return it to the factory along with a copy of the dated
bill of sale, and a check for $30. If the difficulty is solely a
defective part, the unit will be returned to you prepaid, and
your $30 less shipping and packing charges will be re-
turned to you. If the problem is found to be an error in your
assembly of the kit, the unit will be put in proper working
order and returned to you prepaid.
This warranty is void if the kit has not been completely
assembled, or if other than rosin core solder has been
used. Units assembled with acid core or silver solder, or
paste flux, will be returned unserviced.
This warranty gives you certain rights. You may also
have other rights which vary from state to state.
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