Harman Kardon PM635I - Troubleshooting Checklist

TROUBLESHOOTING CHECKLIST
checklist. Also check other related components such as the
tuner, turntable, speakers and other electrical equipment you
use with this amplifier.
Most of the problems consumers have with their high fidelity
system are due to incorrect operation. If this unit does not
operate as you intended, first check the items in the following
Problem |
The POWER indicator does not
light up when the POWER
switch is pressed.
Cause Remedy
The power cord is not plugged in.
The POWER indicator lights up,
but no sound is heard.
The TAPE MONITOR selector is in the “tape
1” or “tape 2” position.
The FUNCTION selection was not made
properly.
The SPEAKERS selector is in the “off” po-
sition.
The speaker wires are disconnected or
broken.
Sound is not heard from the
speaker system on one side.
The connection of speaker wires is incorrect
or incomplete.
The connection wires to other equipment
are disconnected.
The BALANCE control knob is turned to
either the extreme right or left position.
When playing a turntable, a
low-pitched noise (“hum” or
level while playing a turntable,
an undesirable prolonged sound
(howling) is heard.
equipment are reversed.
The ground wire of the turntable is dis-
connected.
turntable.
Too much low frequency sound is present.
Plug in the power cord securely.
Set the TAPE MONITOR selector to the
“source” position.
Set the FUNCTION selector to the proper
position for the desired program source.
Set the SPEAKERS selector to the position
of your desired speaker system(s).
Check the speaker wires and connect them
correctly.
Check the speaker wires for disconnection
or breaking and reconnect them correctly.
Check the wires for disconnection and
connect them correctly.
Set the mark on the BALANCE control knob
to the center position.
When listening to stereo sound, | @ Theleftandright speaker wires are reversed. | @ Check the speaker wires and connect them
the left and right sounds are correctly.
reversed. © The left and right wires connected to other | @ Check the wires to other equipment and
connect them correctly.
Make the ground wire connection correctly.
“buzz”) is heard. e The connections of the turntable wires are | @ Insert the turntable wires into the PHONO
incorrect or incomplete. jacks of this unit securely.
When increasing the volume e “Howling” is created by the speakers and è Place the speakers further away from the
turntable.
Place the turntable on a more solid surface.
Decrease the setting of the BASS control
knob.
Turn off the LOUDNESS switch.
Sound quality is poor.
Input components have not been set up
correctly.
Tone control is not proper.
Check the antenna of the tuner, cartridge
of the turntable, or head of the tape deck,
etc. and make corrections as needed.
Adjust the BASS and/or TREBLE control
knobs to obtain the desired tone.