Technics SE-A1010 - Main PCB Inspection Procedures; Major Component Replacement

Troubleshooting guide
Before requesting service for this unit, check the chart below for a
possible cause of the problem you are experiencing. Some simple
checks or a minor adjustment on your part may eliminate the
problem and restore proper operation.
lf you are in doubt about some of the check points, or if the
remedies indicated in the chart do not solve the problem, refer to
the directory of Authorized Service Centers (enclosed with this unit)
to locate a convenient service center, or consult your dealer for
instructions.
Reference pages indicated in black circles, (For example: @)
For detailed instructions, contact an authorized servicenter in
the U.S.A. and Panasonic Canada inc. Customer Care Centre in
Canada.
in the U.S.A. 1-800-211-7262 or web site
(http://www.panasonic.com)
in Canada 905-624-5505 or web site
(www.panasonic.ca)
Probable cause(s) Suggested remedy
Common problems
No sound is heard when the | The power cord plug is not completely inserted. e Confirm that the power cord plug is fully inserted.
power is switched ON.
Connections are incomplete or incorrect to the è Check to be sure that all connection wires are
speaker systems, etc. correctly connected. © O O
The speaker indicator(s) is (are) turned OFF. e Turn ON the speaker indicator(s). ©
When listening to stereo
sound, the sound lacks
depth (i.e. thin bass, tinny
sound).
[(+) — 0, ©) — 1.
When listening to stereo
sound, the left and right
sounds are reversed.
One of the speakers is connected out of phase
The left and right speaker connections, or control
amplifier connections are reversed.
Reconnect the speakers maintaining proper polarity
li-e., (+) — (4,0) + 0186
e Check all connections and correct them if
necessary. O O
A low-pitched noise (“hum” | The power cord or a fluorescent light, etc., is near | e Try separating the power supply cord from the
or “buzz”) is heard. the connection wires. connection wires.
Sound is not heard from The speaker wires are disconnected. ə Check and correct the connections of the speaker
one of the speakers. wires.
Sound stops during a
performance, or no sound
is heard when the power is
switched ON.
The protection circuitry has functioned because
the positive and negative speaker connection
wires are “shorted”, speakers with an impedance
less than the indicated rated impedance of the
e Switch OFF the power, and, after determining and
correcting the cause, switch ON the power once
again.
e Use speakers of the proper impedance rating. @
amplifier are used, or DC voltage appears in the
output, causing the protection circuitry to function.
Listening caution
Selecting fine audio equipment such as the unit you've just
purchased is only the start of your musical enjoyment. Now it’s time
to consider how you can maximize the fun and excitement your
equipment offers. This manufacturer and the Electronic Industries
Association’s Consumer Electronics Group want you to get the most
out of your equipment by playing it at a safe level. One that lets the
sound come through loud and clear without annoying blaring or
distortion-and, most importantly, without affecting your sensitive
hearing.
We recommend you to avoid prolonged exposure to excessive
noise.
Sound can be deceiving. Over time your hearing “comfort level”
adapts to higher volumes of sound. So what sounds “normal” can
actually be loud and harmful to your hearing.
Guard against this by setting your equipment at a safe level
BEFORE your hearing adapts.
To establish a safe level:
e Start your volume control at a low setting.
e Slowly increase the sound until you can hear it comfortably and
clearly, and without distortion.
Once you have established a comfortable sound level:
e Set the dial and leave it there.
Taking a minute to do this now will help to prevent hearing damage
or loss in the future. After all, we want you listening for a lifetime.
Reference E
RQT5006