Troubleshooting Guide; Specifications - Technics SH-DX1200 Operating Instructions Manual

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.
If 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 are shown as black circled numbers
Symptom
No power.
No sound even when power
is supplied.
Left and right sound is re-
versed.
Low hum or buzz is heard
during play.
Fader (slide volume control)
fails to move smoothly.

Specifications

Input sensitivity/input impedance
PHONO
LINE
AUX/EFFECTOR
MIC
Rated output voltage
LINE
MONITOR
PHONES
REC
Maximum output voltage
(10 k load excluding headphones)
LINE
MONITOR
PHONES
REC
Applicable load impedance
LINE
MONITOR
PHONES
REC
Residual hum and noise
Matsushita Electric Industrial Co., Ltd.
Osaka 542-8588, Japan
.
Checkpoint
Has the power plug been disconnected?
Has the input selector control been set to another
source?
Have any of the units been wrongly connected?
Is the master level control or another volume level
control at the [MIN] position?
Have any of the units been connected with the left
and right channels reversed?
Is there a fluorescent light or other electrical
appliance or its AC mains lead near any of the
connecting cords?
Has the turntable's grounding wire been
disconnected?
Is one of the faders worn?
1.5 to 15 mV/47 k
100 to 1000 mV/more than 10 k
150 mV/47 k
0.7 mV/1 k
1 V/600
2 V/2.2 k
1.5 V/100 (100 load)
1 V/2.2 k
8 V
8 V (headphones open)
1.5 V (100 load)
8 V
More than 600
More than 10 k
More than 47
More than 10 k
Less than 0.2 mV
Remedial action
Connect the power plug securely.
Check the source and set the control to the proper
position.
Connect the units properly.
Adjust the volume level controls correctly.
Connect the channels correctly.
Place the fluorescent light, other appliances or their
AC mains leads as far away from the audio mixer as
possible.
Connect the grounding wire securely.
Replace with a new fader. (Refer to the additional in-
structions provided separately.)
Frequency response
PHONO
LINE
AUX/EFFECTOR
MIC
Tone control characteristics
LOW
HIGH
General
Power supply
Power consumption
Dimensions(WxHxD)
Mass
Specifications are subject to change without notice.
Mass and dimensions are approximate.
30 Hz to 15 kHz (RIAA 1 dB)
10 Hz to 70 kHz(–3 dB)
10 Hz to 100 kHz(–3 dB)
100 Hz to 15 kHz(–3 dB)
12 dB/oct
+12 dB, –24 dB(63 Hz)
+12 dB, –24 dB(10 kHz)
AC 230 – 240 V, 50 / 60 Hz
16 W
260 x 102 x 305 mm
3.5 k
En
RQT5375-B
M0300TK0