Troubleshooting Chart; 8. Subwoofer Pre-Output Socket - Sharp XL-UH220H Operation Manual

Subwoofer connection
When a commercially available subwoofer with a built-in amplifier is
connected to this unit, you can enjoy sound with emphasised bass.
Connect an RCA lead from a commercially available speaker with a
built-in amplifier to the SUBWOOFER PRE-OUT socket.
ANTENNA
FM GND AM
75 OHMS
VIDEO/AUX IN
RIGHT LEFT
SPEAKERS
RATED SPEAKER IMPEDANCE:
6 OHMS MIN.
AC INPUT
RIGHT LEFT
Subwoofer with a
built-in amplifier

Troubleshooting chart

Many potential problems can be resolved by the owner without
calling a service technician.
If something is wrong with this product, check the following before
calling your authorised SHARP dealer or service centre.
General
Symptom
The clock is not set to the Did a power failure occur? Reset
correct time. the clock.
When a button is pressed, Set the unit to the power stand-
the unit does not respond. by mode and then turn it back on.
If the unit still malfunctions, reset
it.
No sound is heard. Is the volume level set to "0"?
Are the headphones connected?
Are the speaker wires discon-
nected?
CD player
Symptom
Playback does not start. Is the disc loaded upside down?
Playback stops in the Does the disc satisfy the
middle or is not performed standards?
properly.
Is the disc distorted or
scratched?
Playback sounds are Is the unit located near excessive
skipped, or stopped in the vibrations?
middle of a track.
Is the disc very dirty?
Has condensation formed inside
the unit?
XL-UH220H
Possible cause
Possible cause
37