THORENS TD 550 - Manual (Page 40)

Trouble shooting
Failure: the platter does not rotate although the unit has
been switched on.
Possible cause:
• The record player/power supply is not connected to the
mains.
• No mains voltage available.
• The belt is not correctly looped around platter and pulley,
or it may have dropped off.
• There is too much slack in the belt.
• Motor or motor control circuitry are defective
Failure: there is wow and flutter audible.
Possible cause:
• The bearing is defective
• The motor control circuitry is defective
Failure: no signal in one or both channels.
Possible cause:
• The connection between record player and amplifier is
interrupted.
• The input selector of the amplifier is in the wrong posi-
tion, respectively has no contact
• The amplifier has not been switched on.
• The amplifier or the speakers may be defective.
• There is no contact at the cartridge pins or the connec-
tors respectively jacks at amplifier or speakers have no
contact.
If a failure could not be remedied in spite of having thor-
oughly examined the possible causes, please contact your
Thorens dealer or distribution partner.
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