Troubleshooting Guide - Onkyo TX-902 Instruction Manual

Trouble shooting guide
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NOTE (TX-902 only):
lf a problem occurs, first operate the unit using the front panel
controls to confirm that it is not due to a malfunction (or worn
out batteries) of the remote control transmitter.
No power. @ Power cord is disconnected. @ Connect power cord.
@ AC fuse blown. ® Contact Onkyo Service Center.
Power but no sound. @ Tape monitor switch on. ® Switch to off.
® Audio muting switch on.(TX-902 only) | @ Switch to off by remote control transmitter.
@ Bad connections. @® Check input leads, speaker leads, pin plugs, etc.
® Amplifier protection circuitry has been | @ Contact Onkyo Service Center.
activated.
Hum, low frequency noise. ® Poor or no input ground. @ Check outer conductor of input plugs.
@ Poor or no phono motor ground. @ Check for proper ground connection.
Howling when the volume is turned up. | © Turntable and speakers are too close ® Move them farther apart.
together.
Rough or scratchy sound. High range is | @ Stylus of pick-up is worn. ® Replace.
not clear. @ Stylus tip is dirty. , ®@ Clean.
® Treble control too high. ® Turn treble control down.
AM stations cannot be received. @ AM ioop antenna is not attached. @ Connect the included AM loop antenna to the
| AM antenna terminals.
Buzzing noise on AM (particularly con- | @ Noise from electrical apparatus such @ Move AM loop antenna to different position.
spicuous at night or with weak stations). as fluorescent lamp. @ Set up outdoor AM antenna.
High pitched noise or buzzing noise on
AM.
@ Noise from TV. ®@ Place the AM loop antenna as far as possible from
the TV.
@ Move unit away from TV set.
Crackling noise on AM and FM.
® Noise caused by turning fluorescent
lamp on and off.
@ Noise from automobile ignition.
@ Move antenna as far as possible from the flu-
orescent lamp.
® install and FM outdoor antenna as far as possible
from the road.
® Change the position or direction of the outdoor
antenna.
FM tuned and stereo indicators light but
sound is distorted and stereo separation
is bad.
FM tuned and stereo indicators flicker
on and off and hiss is heard on FM.
® Station is too strong.
@ Multiple reflection of the radio waves
because of tall buildings or mountains.
® Station is too weak.
® Stereophonic FM broadcasts cover only
about half the distance of an ordinary
broadcasts.
@ Change to T-shaped antenna.
@ Use antenna which has better directivity and se-
lect a point where the distortion is least.
@ install an outdoor FM antenna.
@ Change the position or direction of the outdoor
antenna.
No station is recalled when a preset sta-
tion number is input.
® The power switch has not been turned
on for a long time or the power cord
has been unplugged for a long time.
® The memory contents are lost if the power switch
is not turned on a few times each month. Store
all stations again and remember to turn the power
on a few times each month.
® Insert batteries.
@® Replace batteries.
@ No batteries in remote contro! trans-
mitter.
® Batteries have worn out.
Front panel controls function but remote
control transmitter does not. (TX-902
only)
The tuning steps by which the tuned frequency changes on each band have been set at the factory to the proper value for the country where
each unit is to be sold. If you use the unit in a country where a different tuning step is required or if the broadcast frequencies tn your country
change so that you can not tune in radio stations precisely, contact your authorized Onkyo Service Center.
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